• 한국보육지원학회지
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• 제12권3호
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• pp.177-195
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• 2016

The purpose of this study was to investigate the effect of early educator's psychological exhaustion and happiness on adapting ability of children in early education settings. Two hundred ten early educators and six hundred thirty children were selected as subjects of this study and were requested to participate in a survey. The results of this study were as follows: First, as a result of analyzing the relationship between early educator's psychological exhaustion and happiness as well as children's adaptability on education facility, higher psychological exhaustion and lower happiness were related to lower children's adaptability on education facility. Second, as a result of comparing comparative impact that psychological exhaustion and happiness has on children's adaptability on education facility, psychological exhaustion of the teacher impacts negatively on children's adaptability on education facility and happiness of the teacher did not significantly impact children's adaptability on education facility. This research is expected to be used as foundational data that helps to recognize the importance of psychological exhaustion and happiness of the teacher and could be used to develop various programs that support teachers to recover from burnout and to increase happiness.

• 융합경영연구
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• 제9권5호
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• pp.15-25
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• 2021

Purpose: In the Korean railway infrastructure process, contractors and operators are involved at a later stage, which results in significant inefficiency. This study examines the benefits of early stakeholder involvement in Korean railway infrastructure projects and provides practical guidelines. Design, data and methodology: Literatures and foreign cases are analyzed. Building on the new product development model, we derive propositions explaining the relationship between early stakeholder involvement and the performance of Korean railway infrastructure project. Results: Major propositions include that early involvement of contractor has a positive effect on the project performance by shortening the infrastructure construction period and that early involvement of railway operator has a positive effect on the project performance by improving the effectiveness of railway infrastructure. Four requirements for the success of early stakeholder involvement are addressed. Conclusions: This study suggests that early stakeholder involvement shortens the construction period and improves railway infrastructure effectiveness. Academic contribution is to present the framework on railway infrastructure projects as holistic interactions among stakeholders. Practical contribution is to provide railway policy makers and other business practitioners with policy guidelines to improve railway infrastructure project process and to recommend an open access to relevant data.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2001년도 봄 학술발표회 논문집
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• pp.991-996
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• 2001

The long-term durability characteristics of high-early-strength concrete were assessed. The effect of long-term durability characteristics of high-early-strength concrete were investigated. In experiment, two different types of fiber were adopted for improvement of durability. High-early-strength fiber reinforced concretes using regulated-set cements are compared with high-early-strength concrete without fiber. The durability performance of the laboratory-cured high-early-strength concrete specimens was determined by conducting an accelerated chloride permeability, abrasion resistance, freeze-thaw, surface deicer salt scaling and wet-dry repetition test. The results indicated that incorporation of fibers enhance durability performance.

• 한국보육지원학회지
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• 제12권2호
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• pp.183-200
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• 2016

This study examined the mediating effect of emotional labor in the relations between teachers' emotional intelligence and teacher-child interaction of novice early childhood teachers. The sample consisted of 248 novice early childhood teachers in Gyeonggi Province. The structural equation modeling was conducted using AMOS to test the fit of a hypothesized structural model. The mediating effect of emotional labor was verified by the bootstrapping approach. The results were as follows: First, teacher-child interaction was positively associated with teachers' emotional intelligence and deep acting in emotional labor was negatively associated with surface acting in emotional labor. Next, surface acting in emotional labor had a mediating effect on the relations between emotional intelligence and teacher-child interaction. Finally, deep acting of emotional labor had a partial mediating effect on the relationship between emotional intelligence and teacher-child interaction. Based on these findings, ways to enhance teachers' emotional intelligence in relation to the novice teachers' emotional characteristics, and to improve recognition on emotional labor were discussed.

• Clinical and Experimental Reproductive Medicine
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• 제41권2호
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• pp.47-61
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• 2014

Stored maternal factors in oocytes regulate oocyte differentiation into embryos during early embryonic development. Before zygotic gene activation (ZGA), these early embryos are mainly dependent on maternal factors for survival, such as macromolecules and subcellular organelles in oocytes. The genes encoding these essential maternal products are referred to as maternal effect genes (MEGs). MEGs accumulate maternal factors during oogenesis and enable ZGA, progression of early embryo development, and the initial establishment of embryonic cell lineages. Disruption of MEGs results in defective embryogenesis. Despite their important functions, only a few mammalian MEGs have been identified. In this review we summarize the roles of known MEGs in mouse fertility, with a particular emphasis on oocytes and early embryonic development. An increased knowledge of the working mechanism of MEGs could ultimately provide a means to regulate oocyte maturation and subsequent early embryonic development.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2006년도 춘계 학술발표회 논문집(II)
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• pp.657-660
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• 2006

Recently, very-early strength latex-modified concrete(below ; VES-LMC) has been developed for repairing and overlaying the old concrete bridge deck. Early-age defects in high-performance concrete due to thermal and autogenous deformation shorten the life cycle of concrete structures. Thus, it is necessary to examine the behavior of early-age concrete at the stages of design and construction. The purpose of this study was to evaluate the autogenous shrinkage of VES-LMC, having an experimental variables such as retarder and water-cement ratio. The greater the retarder content in VES-LMC, the greater the expansion at early-age. This recommend the small retarder content as possible. The effect of water-cement ratio on early-age behavior is very small, because of the wrapped specimen in order to prevent water evaporation.

• Advances in nano research
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• 제13권2호
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• pp.175-186
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• 2022

This study is a randomized pretest-posttest design that aims to investigate the effect of early entrepreneurship education on cognitive and non- early entrepreneurship education, non-cognitive skills, creativity, self-efficacy, Bizworld cognitive skills of male sixth-grade primary school students. A total of 45 students were selected by multi-stage random sampling method and were assigned randomly to experimental, active-control and control groups. The experimental group received entrepreneurship education based on the Bizworld entrepreneurship program. The results indicate that early entrepreneurship education had an effect on non-cognitive skills (such as risk taking propensity, creativity, self-efficacy, persistence and need for achievement. It seems that early entrepreneurship education is a proper strategy to develop children's non-cognitive skills in late years of primary school. These skills will affect children's individual, educational, social and occupational future and can have long term benefits for students, families and society.

• 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.

• Archives of Plastic Surgery
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• 제48권6호
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• pp.583-589
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• 2021

Background In prosthesis-based breast reconstruction patients, the drain tends to be kept in place longer than in patients who undergo only mastectomy. Postoperative arm exercise also increases the drainage volume. However, to preserve shoulder function, early exercise is recommended. In this study, we investigated the effect of early exercise on the total drainage volume and drain duration in these patients. Methods We designed a prospective randomized trial involving 56 patients who underwent immediate breast reconstruction following mastectomy using tissue expanders. In each group, the patients were randomized either to perform early arm exercises using specific shoulder movement guidelines 2 days after surgery or to restrict arm movement above the shoulder height until drain removal. The drain duration and the total amount of drainage were the primary endpoints. Results There were no significant differences in age, height, weight, body mass index, or mastectomy specimen weight between the two groups. The total amount of drainage was 1,497 mL in the early exercise group and 1,336 mL in the exercise restriction group. The duration until complete removal of the drains was 19.71 days in the early exercise group and 17.11 days in the exercise restriction group. Conclusions Exercise restriction after breast reconstruction did not lead to a significant difference in the drainage volume or the average time until drain removal. Thus, early exercise is recommended for improved shoulder mobility postoperatively. More long-term studies are needed to determine the effect of early exercise on shoulder mobility in prosthesis-based breast reconstruction patients.

• 한국보육학회지
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• 제19권3호
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• pp.115-128
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• 2019

본 연구는 어머니의 양육스트레스가 유아의 유아교육기관 적응에 미치는 영향을 알아보고, 어머니의 양육스트레스와 유아의 유아교육기관 적응 간의 관계에서 부부 간 의사소통의 매개효과를 검증하는데 그 목적이 있다. 본 연구의 대상은 전북 J시에 거주하는 유아 219명과 그들의 어머니이다. 본 연구에서 수집된 데이터는 spss 21.0, amos 21.0으로 분석하였으며, 구조방정식 모형을 통해 매개효과를 검증하였다. 본 연구결과는 첫째, 어머니의 양육스트레스와 부부 간 의사소통은 유아의 유아교육기관 적응에 직접적인 영향력을 갖는 것으로 나타났다. 둘째, 어머니의 양육 스트레스와 유아의 유아교육기관 적응 관계에서 부부 간 의사소통은 매개효과를 갖는 것으로 나타났다. 이러한 결과를 바탕으로 양육스트레스 감소와 긍정적인 부부 간 의사소통의 중요성에 대한 방안을 논의하였다.