• Journal of the Korea Concrete Institute
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• v.23 no.1
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• pp.87-98
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• 2011

Crack formations are inevitable in reinforced concrete structures. To estimate crack widths, empirical formulae are used widely and indirect crack controling methods of limiting bar spacing and bar diameter are also used due to their simplicity. In EC2, the characteristic crack width is calculated by multiplying maximum crack spacing and average strain. In this study, limit values of maximum bar spacing and bar diameter are examined as the material characteristics are varied. Two models of tension stiffening effect and maximum crack spacing and their effects are evaluated. The obtained results are compared with the values obtained using KCI method. The results showed that a significant difference is found when two tension stiffening effect are employed, and an under-estimation is found when 2nd order tension stiffening effect and maximum crack spacing limit from Part II were implemented. Therefore, a rational indirect crack control method attained using the tension stiffening effect of 2nd order form is needed. Also, a consistency in serviceabiliy analysis in flexural members needs to be secured. In order to achieve these goals, two crack controling models are suggested.

• Korea journal of population studies
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• v.32 no.2
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• pp.115-140
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• 2009

이 연구는 외국인 노동자들의 한국문화에 대한 적응문제를 살펴 보기 위하여 그들이 한국인들에 대하여 가지고 있는 사회적 거리감(social distance)을 분석하고 있다. 사회적 거리감은 인종 간 상호 관계 연구에서 중요한 개념으로 다루어져 왔으며, 특히 사회적응 수준을 드러내는 효과적인 척도로 각광받아왔다. 이 연구는 한국내 외국인 노동자들의 한국인에 대한 사회적 거리감의 결정요인을 규명하려는 목적을 가지고 있다. 서울과 경기 지역에서 수집된 자료에 대한 다중회귀분석(OLS Regression)을 통하여, 이 연구는 서구 사회에서 다수 인종의 사회적 거리감을 효과적으로 설명하는 것으로 판명된 요인들이 한국의 소수 인종인 외국인노동자들에게도적용될수있는가를살펴본다. 구체적으로는 연령, 성, 교육, 종교, 인종과 같은 사회인구학적 변수들과 한국인과의 접촉정도 가사회적 거리감에 유의미한 효과가 있는지 분석된다. 둘째, 이 연구는 외국인 노동자들의 가장 중요한 삶의 공간인 작업장에서의 경험과 관련된 변수들이 사회적 거리감에 대하여 가지는 효과를 탐구한다. 셋째, 구조방정식 모형(Structural Equation Model)의 적용을 통하여, 이 연구는 다중회귀에서 분석된 여러 설명 변수들 간의 복잡한 인과구조를 규명하고, 이들이 사회적 거리감에 미치는 영향을 직접효과, 간접효과, 전체효과로 나누어 살펴본다. 다중회귀분석 결과는 집단 간 사회적 거리감은 사회인구학적 변수들, 한국인들과의 접촉, 작업장 내 경험등 다양한 요인들의 복합적인 결과물이라는 점을 확인해 준다. 특히 분석결과는 작업장에서의 경험과 느낌이 한국 내 외국인 노동자들의 한국인들에 대한사회적거리감형성에결정적이라는사실을보여주는반면, 기존연구에서 효과적인 것으로 판명된 전통적 요인들은 영향력이 미미하다는 점을 말해준다. 한편, 구조방정식 모형을 적용한 분석결과는 한국인 친구들과의 접촉과 이해하기 쉽고 구체적인 노동조건이 사회적 거리감에 직접적으로 영향을 주고 있다는 것을 보여 준다. 한편 추상적인 노동조건은 사회적 거리감에 간접적으로 영향을 미친다. 상사에 대한 평가와 직무만족은 노동조건에 의해 유의미한 영향을 받지만, 한국인 친구와의 접촉과는 관련이 없다. 간단히 말해, 상사에 대한 평가와 직무만족은 노동조건이 사회적거리감에 대하여 가지는 효과를 매개한다. 결론적으로, 구조방정식모형의 분석결과는 작업장 관련 변수들간에 복잡한 인과구조가 존재한다는 점과 작업장 내 경험이 한국인에 대한 사회적 거리감 형성에 가장 중요하다는점을 확인해 준다.

• Journal of Korean Society of Transportation
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• v.10 no.3
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• pp.123-140
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• 1992

지방도로의 포장 및 확장사업으로 인한 지역개발효과를 분석하였다. 효과발생시 시기적 특성을 기준으로 할 때, 도로개선사업의 지역개발효과는 직접효과, 유발효과 및 간접효과 등 세가지의 유형으로 구분될 수 있다. 이들 각 유형의 효과가 각각 어떻게 발생되는가를 파악하기 위하여 본연구에서는 교통부문, 농업부문, 공업부문, 공공 서비스 부문, 주거부문 및 인문사회부문 등 6개부문에 대한 도로개선 사업의 효과를 분석하였다. 분석은 ADB 5차사업으로서 1983년에 공사를 시작하여 1985년에 사업이 완료된 밀양 및 하동지구를 그 대상으로 하였다. 도로개선사업의 효과가 사업종료 후 어느 시점에서부터 발생되는가를 관찰하기 위하여 효과분석을 위한 자료수집의 시점을 사업전 (1983년), 사업완료 직후(1986년) 그리고 사업완료 5년후(1992) 등 크게 세가지로 구분하였다. 1983년 및 1986년의 자료로는 건설부에서 조사한 자료들을 이용하였으며, 1992년의 자료는 현장조사와 해당군의 통계에서 수집된 자료를 이용하였다. 도로사업으로 인한 순효과를 측정하기 위하여 본 연구에서는 각 대상지역을 사업지구(Project Area)와 대조지구(Control Area) 로 구분하고 이들 각 지구에 대한 시점별 분석들 실시하였다.

• Journal of Convergence for Information Technology
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• v.10 no.1
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• pp.93-98
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• 2020

The study aims to understand how indirect hallyu experiences in the Chinese market affect Korea's national brand image and willingness to purchase Korean goods from the perspective of "content consumption" and "recognition of Korea's." To that end, a total of 178 Chinese university students in the Beijing and Shanghai regions were analyzed. According to research and analysis, the perception of indirect hallyu experience has had a positive affection not only on the Korean national image but also on the willingness to purchase Korean products. Also, the halo effect came as Korea's national image had a positive effect on quite a lot of intentions to buy Korean merchandise. The recognition of South Korea can be enhanced by the spread of hallyu, which can be a decisive gauge of a favorable impression of the country in a short time.

• The Journal of Korean Society for School & Community Health Education
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• v.19 no.1
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• pp.127-144
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• 2018

배경 및 목적: 이 연구의 목적은 OECD "더 나은 삶의 지수 2015"에서 34개 국가 중 29위로 평가된 한국인의 주관적 건강(subjective well-being)과 치료적 지지(therapeutic support) 관계에서 장소애착(place attachment)의 매개 효과를 탐색하였다. 방법: 비확률 표본추출 방법을 사용하여 서울 시민들 중 헬스클럽 이용자를 대상으로 설문지 조사를 실시하였으며, 구조방정식 모형분석을 통해 가설을 검증하였다. 결과: 분석 결과 치료적 감독(therapeutic oversight )만이 주관적 건강에 직접적인 영향을 미치는 것으로 확인되었다(B = .281, p < .05). 장소애착의 매개효과를 통해서 검증한 결과 치료적 감독 뿐만 아니라 치료적 증언(therapeutic testimonial)에 대해서도 유의하게 검증되었다(치료적 감독 간접 효과 = .155, p < .05, 치료적 증언 간접 효과 = .175, p < .05). 결론: 연구결과 주관적 건강에 영향을 미치는 것으로 장소애착의 매개효과가 큰 것으로 나타났다. 따라서 서로를 돌보며 회원들 간의 업적을 축하 할 수 있는 장소를 기반으로 한 건강 프로그램을 실행한다면 사회 구성원들의 주관적 건강 향상에 도움이 될 것으로 사료된다.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.4
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• pp.229-238
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• 2018

The purpose of this study is to examine the difference in the mediating effects of relief from fatigue through sleep and perceived subjective health in the relationship between perceived stress and subjective happiness in middle school students who attempted suicide. The analysis was conducted using Path analysis, the Bootstrapping method, Phantom variable and Multiple group analysis by AMOSS using the IBM SPSS 23 and IBM SPSS AMOS 23 programs with 820 middle school students who attempted suicide in the past 12 months using the raw data of the Korea Risk Behavior Web-Based Survey (2016). In the relationship between perceived stress and perceived subjective health, the indirect effect of relief from fatigue through sleep and perceived subjective health (${\beta}=-.12$, p=.003) was statistically significant. The difference in the magnitude of the two indirect effects was found to be greater for the subjective health status than for relief from fatigue through sleep (difference = .02, p=.028) and the effects were greater for the males (${\beta}=.44$, p <.001) than for the females (${\beta}=.23$, p<.001). Based on the findings, it is necessary to develop and apply an educational program that includes the factors that contribute to improving the happiness of middle school students.

• Korean Journal of Social Welfare
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• v.56 no.4
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• pp.239-268
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• 2004

This study examined the role of self-construals in marital satisfaction among men and women, and explored how independent and interdependent self-construals contribute to or undermine marital satisfaction. Data were drawn from a self-administered questionnaire study in which 489 married people(aged 25-75) residing in Seoul participated. Path analyses were conducted using Structural Equation Modeling Program, and a goodness of fit of the proposed path model was evaluated. As expected, the positive impact of independent self-construal on marital satisfaction was mediated by self-esteem and clarity of communication, and that of interdependent self-construal on marital satisfaction was mediated by psychological stability and a sense of relational well-being. The direct effects of these two types of self-construal on marital satisfaction were opposite. As predicted, independent self-construal decreased marital satisfaction, whereas interdependent self-construal increased it. All of the direct and indirect effects of independent and interdependent self-construals on marital satisfaction were statistically significant, except the indirect effect of interdependent self-construal as mediated by psychological stability. The goodness of fit indexes of the path model indicated that the model was acceptable. However, the results of separate path analyses for men and women showed that some of the effects of self-construals on marital satisfaction differed by gender. Based on these results, implications for clinical social work practice were discussed.

• Journal of Technology Innovation
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• v.23 no.3
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• pp.255-286
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• 2015

This study focuses on the role of supplier's organizational learning capacity in creating the outcomes of technological innovation based on buyer-supplier collaboration. In doing so, the study is carried out through mediating effect analysis using 221 small and medium enterprises among Korean manufacturers. As a result of empirical tests, buyer's indirect supports(knowledge, know-how, value, information sharing) have significant and positive effects on the outcomes of technological innovation, whereas direct supports(technical staff support, machine tools and test equipments support, education for facility utilization) show no statistical significance. In addition, a further test for mediation effects reveals that a full mediation exists between supplier learning capacity and buyer's direct support, while there is a partial medication effect for buyer's indirect support. The findings suggest that buyer's indirect support can take on more important role to enhance the outcomes of supplier's technological innovation.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.16 no.8
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• pp.5160-5171
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• 2015

The purpose of this study is to find out the explanatory power of the mother psychological characteristics (self-efficacy, self-esteem, depression, parenting stress), infant temperament, parenting look at how the variables affect the infant development. Study is an infant born in 2008, 1802 mothers name. Child Policy Research Institute Korea Children's Panel 3rd year data were used for the study. Analysis of the data was analyzed using the SPSS 18.0 correlation evaluate the direct and indirect effects between the path and the effect of each variable on infant development through Amos 16.0. The results were as follows. First, the mother significant indirect effect of mothers had a positive impact due to the influence of positive parenting Infant Development Psychological variables were mother and mediating role of parenting behavior was completely mediated in the path to infant development. Second, infant temperament and parenting mothers showed a complete mediating effect on the path to the Infant Development were significant indirect effects mediated by parenting mothers on infant development. Third, the direct effects on the mother parenting infant development showed a statistically significant result.

• The Journal of the Korea Contents Association
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• v.18 no.1
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• pp.596-606
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• 2018

This study examined the mediating effects of self-reassuring and self-attacking in the relationship between mental health and psychological well-being among college students. The study subjects were 230 (98 males and 132 females), and the collected data were analyzed using the SPSS PROCESS Macro based on regression analysis. The results of the study were as follows. First, there were significant relationship among mental health, psychological well-being, self-reassuring and self-attacking. Second, depression, obsessive compulsive disorder, interpersonal sensitivity and psychosis had a significant negative effect on psychological well-being. Third, self-reassuring and self-attacking had a partial mediating effect on the relationship between mental health and psychological well-being. The indirect effect of mental health on psychological well-being through self-reassuring was significantly higher than the indirect effect of psychological well-being through self-attacking. Based on the results of this study, we discussed the role of self-reassuring in the relationship between mental health and psychological well-being.