• 보건의료생명과학 논문지
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• 제10권1호
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• pp.81-88
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• 2022

본 연구의 목적은 영유아교사의 대인관계 유능성, 주관적 안녕감, 정서표현성 간의 관계를 분석하고 대인관계 유능성 및 주관적 안녕감이 정서표현성에 미치는 영향에 대해 알아보고자 한다. 이를 위하여 I시와, G시에 소재하고 있는 유치원, 어린이집에 근무하고 있는 영유아교사 341명을 대상으로 설문조사를 하였다. 본 연구에 사용된 연구도구는 ICQ, ESS, PANA 및 SWLS 척도를 사용하였다. 첫째, 대인관계 유능성, 주관적 안녕감, 정서표현성 간의 상관 관계를 살펴 본 결과 주관적 안녕감 중 부정적 정서 외에 정적인 상관관계가 있는 것으로 나타났다. 둘째 영유아교사의 대인관계 유능성 및 주관적 안녕감이 정서표현성에 미치는 영향을 살펴 본 결과 부분적으로 통계적으로 유의한 영향을 미치는 것으로 나타났다.

• 수산경영론집
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• 제31권1호
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• pp.13-32
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• 2000

This study tries to give an insight for fisheries policy makers to prepare policy proposals for Early Voluntary Sectoral Liberalization(EVSL) in the fisheries sector of APEC. To do so, the paper assesses the impact of EVSL on the fisheries sector, especially, Korean Deep-See Fisheries in quantitative way using the partial equilibrium analysis of Feenstra(1995). For the use of simple analysis, the paper focuses on the impact on trade flows and welfare of the elimination of tariffs on Korean Deep-See Fisheries among several measures of EVSL. The results from the quantitative analysis of the impact of EVSL on the Korean Deep-Sea Fisheries indicate that the increase of export is moderately higher than that of import and the total welfare effect is positive, even though a certain Deep-Sea Fisheries confronts a reduction of domestic supply basis.

• Journal of Advanced Marine Engineering and Technology
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• 제32권7호
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• pp.1013-1018
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• 2008

For a sequential port fuel injection natural gas engine, its combustion and emission characteristics at low loads are crucial to meet light duty vehicle emission regulations. Fuel injection timing is an important parameter related to the mixture formation in the cylinder. Its effect on the combustion and emission characteristics of a natural gas engine were investigated at 0.2 MPa brake mean effective pressure (BMEP)/2000 rpm and 0.26 MPa BMEP/1500 rpm. The results show that early fuel injection timing is beneficial to the reduction of the coefficient of variation (COV) of indicated mean effective pressure (IMEP) under lean burn conditions and to extending the lean burn limits at the given loads. When relative air/fuel ratio is over 1.3, fuel injection timing has a relatively large effect on engine.out emissions. The levels of NOx emissions are more sensitive to the fuel injection timing at 0.26 MPa BMEP/1500 rpm. An early fuel injection timing under lean burn conditions can be used to control engine out NOx emissions.

• Journal of Microbiology and Biotechnology
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• 제18권2호
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• pp.369-376
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• 2008

In the present study, we investigated the radioprotective effect of cyclo(L-phenylalanyl-L-prolyl) on irradiated rat lungs to determine its potential as a radioprotective agent. We found that early lung damage induced by irradiation was reduced by treatment with 40mg/kg of cyclo(L-phenylalanyl-L-prolyl) in the latent and early pneumonitis phases. Expression of $TNF-{\alpha}\;and\;TGF-{\beta}1$ at 2 and TGF-${\beta}1$ at 8 weeks post-irradiation was decreased in animals that received both radiation and cyclo(L-phenylalanyl-L-prolyl) compared with animals that received radiation alone. Evidence indicated that the proinflammatory cytokine TNF-${\alpha}$ and the fibrogenic cytokine TGF-${\beta}1$ likely play a role in the radioprotective effect of cyclo(L-phenylalanyl-L-prolyl). However, besides TNF-${\alpha}$ and TGF-${\beta}1$ expressions, the precise mechanism by which cyclo(L-phenylalanyl-L-prolyl) ameliorates the induced radiation damage is not clear.

• 수산해양교육연구
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• 제19권3호
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• pp.429-440
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• 2007

The aim of this study is to search for the effect of journal writing on the reflective thinking of pre-service teachers for young children. The question for this study is as follows: Would the journal writing experiences improve reflective thinking experiences of pre-service teachers for young children? The subjects were 50 sophomores in junior college, J city, and they were divided into a experiment group, and a comparison group. The experiment group had journal writing experiences for 8 weeks. The data was analyzed using T-test. The results are as follows: Journal writing activity revealed positive effect on reflective thinking level improvement of pre-service early childhood teacher.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2003년도 봄 학술발표회 논문집
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• pp.95-100
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• 2003

The shrinkage of high strength/high performance concrete is very important property for the good working of a structure since it very often generates early age cracking due to thermal and autogenous shrinkage. Autogenous shrinkage occurs as a result of internal moisture depletion due to hydration and temperature-induced effects. The level of autogenous shrinkage occurring due to hydration also depends on temperature history at very early age. It is necessary that effect of temperature on autogenous shrinkage is investigated since the stress generated due to autogenous shrinkage is quantified. In this study, Effect of hydration heat evolution on autogenous shrinkage of high strength concretes with W/C=25-40% was investigated.

• 건축역사연구
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• 제6권3호
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• pp.155-166
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• 1997

This study aimes to understand the principles in Theo Van Doesburg's architectural concept. Generally, Theo Van Doesburg has been thought that he betrayed De Stijl by acting contrary to the Neo-Plasticism which was constituted in early De Stijl by Mondrian and himself and by suggesting opposite one, Elementarism. Therefore this study tried to understand the principles that make his architectural concept, confirming the background of Elementarism. After studing relation, which Theo Van Doesburg has used, between space and color, it is concluded that he has unchanged principles of architectural concept from early De Stijl to last, opposite to general appreciation. So, Theo Van Doesburg acted to maintain equilibrium that exists for balancing the two elemental forces which contrast each other in relation between space and color. The equilibrium which he looked for aims to constitute harmonized dynamic space by dynamic rythem of equilibrium instead of Neo-Plastic effect. And using color, which used to be producing dynamic effect, he intended to maintain static effect for making dynamic rythem of equllibrium by the principles he made.

• 한국대기환경학회지
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• 제23권1호
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• pp.29-38
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• 2007

Recently, the tropospheric ozone has gained a global attention for its adverse effect on vegetation as well as its contribution to the global warming. Although a number of studies have been carried out for the urban ozone, the effect of ozone on vegetation is still largely unknown in Korea. The present work aimed at performing the first evaluation of forest damage by ozone using the national air monitoring data from the year 2000 to the year 2005. Moreover, it also explored the relevance of adverse effect of ozone to the recent events on leaf chlorosis of black locust, Robinia pseudo-acacia, leading to early foliage widely observed in Korea since 2001. In the nineties, forest damages caused by ozone such as leaf chlorosis occurred in Europe and North America and led to invoke comprehensive field and laboratory studies. As a result, AOT40, implying the accumulated dose over a threshold 40 ppb, was developed to assess the forest damage by ozone. 19 air monitoring stations were selected across Korea to calculate AOT40 from the year 2000 to the year 2005. The calculated AOT40 generally increased during April and May and reached the maximum after May. The increase of AOT40 diminished substantially from the mid-June as the rainy season started. The calculated AOT40 in the nine rural sites from the year 2002 to th ε year 2005 ranged from 6.8 to 29.4 ppm-hr. And all the AOT40 at th ε year 2005 exceeded the critical value of 10 ppm-hr for forest damage. Morevoer the calculated AOT40 of Korea appeared higher than the AOT40 of Europe in the year 2004/2005 and comparable to the AOT40 of China in the year 2000. Despite the high levels of the calculated AOT40 since the year 2001 and the consistency of time of seasons between high AOT40 values and occurrence of chlorosis of black locust, further studies are required to conclude that the chlorosis of black locust occurred from the year 2001 to the year 2005 were resulted from a damage by ozone.

• 한국콘텐츠학회논문지
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• 제18권1호
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• pp.551-560
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• 2018

본 연구에서는 국내에서 유아를 위한 연극프로그램의 효과성을 보다 체계적이고 통합하여 제시하고 효과적인 유아대상 연극프로그램의 실행방안을 제시하기 위하여, 유아를 위한 연극프로그램의 효과성에 대한 국내연구들을 메타분석하였다. 자료 수집은 2017년 4월까지 국내에서 발표된 유아대상의 연극프로그램 논문을 대상으로 검색하였고 선정기준에 따라서 최종 39편의 논문을 분석하였다. 메타분석을 위하여 메타분석의 통계프로그램인 CMA(Comprehensive Meta-Analysis) software 2.0을 사용하였다. 주요 결과는 다음과 같다. 첫째, 유아를 위한 연극프로그램의 평균효과크기를 살펴보면, 언어표현력은 평균효과크기가 1.922로 가장 강한 효과크기를 나타냈고, 정서지능은 1.898, 창의성은 1.558, 사회성은 1.292로 모두 큰 효과크기를 나타내었다. 둘째, 유아를 위한 연극 프로그램의 효과가 조절변수에 따라 차이가 나는지 살펴본 결과, 언어표현력, 창의성, 사회성에 있어서 '연령', '언어표현력에 있어서 '총시행횟수'가 통계적으로 유의미한 차이를 나타내었다. 즉, 유아를 위한 연극프로그램은 연령이 만 4세보다는 만 5세인 경우에 언어표현력, 창의성, 사회성에서 가장 효과적인 것으로 나타났으며, 언어표현력은 최소한 10회 이상을 시행한 경우에 효과적인 것으로 나타났다. 본 연구결과를 바탕으로 유아를 대상으로 한 연극 프로그램 실행의 함의와 제한점을 제시하였다.

• 한국보육지원학회지
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• 제19권2호
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• pp.61-85
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• 2023

Objective: This study aims to investigate whether science teaching attitude of early childhood teachers mediates the relationship between the professional learning environment of institutions and their intention to accept artificial intelligence (AI) technology, and whether the experience of using smart and digital devices moderates the effect of science teaching attitude. Methods: An online survey was conducted targeting 118 teachers with more than 1 year of experience in kindergarten and day care center settings. Descriptive statistical analysis, correlation analysis, and The Process macro model 4, 14 were performed using SPSS 27.0 and The Process macro 3.5. Results: First, the science teaching attitude of early childhood teachers served as a mediator between the professional learning environment of institutions and teachers' intention to accept AI technology. Second, the experience of using smart and digital devices was found to moderate the effect of teachers' science teaching attitude on their intention to accept AI technology. Conclusion/Implications: This results showed that an institutional environment that supports teachers' professionalism development and provides rich experience is crucial for promoting teachers' active acceptance of AI technology. The findings highlight the importance of creating a supportive institutional envionment for teacher's professional growth, enhancing science teaching attitudes, and facilitating the use of various devices.