• Korean Journal of Childcare and Education
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• v.11 no.5
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• pp.311-332
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• 2015

The present study employed a pretest-posttest quasi-experimental design to evaluate the effectiveness of a teacher education program for child care teachers. Twenty-seven teachers were randomly assigned to intervention and control groups with 12 and 17 teachers in each group. Teachers in the intervention group participated in the program. After termination of the program, differences between pre- and post-tests were examined in regards to teachers' emotional regulation, efficacy, parent-teacher communication and job satisfaction. There were four major findings. First, self-reported teachers'emotional regulation, teachers'efficacy and job satisfaction were significantly improved in the intervention group, but not in the control group. Second, parent-teacher communication difficulty was significantly reduced in the intervention group, but not in the control group. These findings emphasize the importance of the teachers' positive characteristics in improving the outcome of preschoolers.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.14 no.6
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• pp.2667-2676
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• 2013

This study was to examine the relationship between suicidal ideation, depression, stress and their parent's socioeconomic status. Nation-wide representative data from the Korean National Health and Nutrition Examination Survey 2009 were used in this study. 904 adolescents with parent were analysed. Parent's socioeconomic status, especially mother's low educational level and the beneficiaries for national basic livelihood security were significant risk factor for adolescents' suicidal ideation. These associations remained significant in multiple logistic regression controlling for all covariates. The findings in the current study support the global literature on the importance of socioeconomic status in promoting adolescent's mental health. Future prevention intervention efforts to improve adolescent's suicide risk will need to take into consideration parent's and household's socioeconomic conditions. Future study is needed to explore the possible proximal risk factors and mediators between parent's socioeconomic status and mental health among adolescents.

• Korean Journal of Plant Taxonomy
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• v.34 no.2
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• pp.153-166
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• 2004

Genus Taraxacum propagated through diploid sexual reproduction and polyploid agamospermy. The cluster analysis of Korean(2 species, 4 population), Japanese (2 species 4 taxa 6 population) and Taiwanese (1 species, 3 population) Taraxacum species using 15 measured capitulum morphological characters was conducted to study the speciation of diploid Taraxacum in East Asia. We measured 15 capitulum morphological characters including length of capitulum, length and shape of outer-involucre, corniculate appandage. Within one population, these characters were very various and were overlapped. The result of cluster analysis using morphological character showed that all species were clustered into four groups (Korean species & T. japonicum group, T. platycarpum subspecies group, T. platycarpum subsp. hodense group, T. formosanum group). Korean species, T. hallaisanense (diploid) and T. ohiwanum (diploid, triploid) were clustered into T. japonicum that was occurred in Kansai provinces of Japan. Therefore, we could infer that Korean species was closely related to Japanese T. japonicum of Japanese species.

• Korean Journal of Plant Taxonomy
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• v.34 no.3
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• pp.189-203
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• 2004

Numerical analysis based on 33 morphological characters from 25 populations of 8 species of tribe Forsythieae in Korea was conducted to investigate the taxonomic delimitation and discuss the systematic relationships. In this study, Fontanesia phyllyreoides Labill was adopted as comparing outgroup to discuss the taxonomic status of Abeliophyllum distichum and elucidate the taxonomic relationships between tribe Forsythieae and tribe Fontanesiae. Based on the results of PCA, the sum of contributions for the total variance of three major principal components was 79.6% (PC1 54.2%, PC2 15.4% and PC3 10.0%, repectively). Two dimensional plotting from PCA results recognized three distinct generic clusters. Among the populations of Forsythia, two distinct groups were clustered as I. koreana-saxatilis-viridissima and II. ovata-nakaii. However, 15 populations of Abeliophyllum distichum were arranged randomly without any tendency, and the infraspecies of Abeliophyllum distichum could be recognized as individual variations. Fontanesia phyllyreoides Labill was clustered independently and intertribal limitation was clearly distinguished.

• 한국벤처창업학회:학술대회논문집
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• 2023.04a
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• pp.93-99
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• 2023

경기 침체와 더불어 고용 불안, 그에 따른 사회의 혼란 속에서 국가의 성장 동력의 대안 중 하나로 창업 활성화의 요구가 높아지고 있다. 우리나라를 비롯한 많은 국가에서 창업 활성화를 중장기 목표로 설정하고 다방면으로 노력하고 있다. 이에 따라 창업의도를 높일 수 있는 요인에 대한 연구가 진행되어 왔고, 특히 자기효능감과 창업기회인식 등의 개인적 역량 요소가 창업의도를 높인다는 연구 결과들이 지속적으로 제시되고 있다. 이러한 창업의도를 높일 수 있는 자기효능감, 창업기회인식을 고취시키기 위해 학계의 연구활동 뿐 아니라 정부의 정책적 접근 또한 활발하게 이루어지고 있다. 창업교육 활성화부터 사회적 환경 조성을 위한 창업 롤모델 활용, 미디어를 통한 창업 활동 홍보 등 긍정적인 창업 경험을 공유하도록 하기 위한 연구 역시 계속되고 있다. 그러나 개인적 역량 요소와 사회적 환경 조성 외에 문화적 특성이 창업의도에 영향을 미치는지에 대한 연구는 부족하였다. 본 연구는 문화적 특성이 창업의도를 높일 수 있는 요인으로 개인적 역량 요소와 사회적 환경 조성과 함께 의미가 있을 것이라는 물음에서 시작하였다. 가설 검증을 위하여 SPSS 26버전을 활용하여 로지스틱 회귀분석 하였고 GEM KOREA의 2017년 데이터를 분석하였으며, 자기효능감과 창업기회인식은 창업의도에 긍정적인 영향을 미친다는 기존 연구 동일한 결과가 나왔다. 본 연구의 특징은 문화적 특성을 집단주의와 관계주의로 구분하여 자기효능감, 창업기회인식과 창업의도에 영향을 미치는 과정에서의 조절효과를 검증하였다는 것이다. 문화적 특성 중 집단주의 특성은 유의하지 않았으나 관계주의 특성이 유의하여 조절효과를 가진다는 결과를 얻어냈다. 이는 국가에 새로운 성장 동력이 필요한 상황에서 창업의도가 없거나 낮은 개인들도 관계주의 특성을 활용하여 창업의도를 높일 수 있다는 연구 결론으로 이어진다. 지금까지 알려진 바와 달리 한국은 집단주의 보다 관계주의가 강하기 때문에 관계주의 문화 특성을 고려하여 선배 창업가 또는 로컬 창업가들과의 관계를 만들고 유지할 수 있도록 하는 등의 정책을 수립할 필요가 있다는 것을 시사한다. 하지만 이미 설계된 GEM 데이터를 활용하였다는 점, 문화적 특성이 각기 다른 국가들과의 비교연구가 필요하다는 점 등은 본 연구의 한계라고 할 수 있다.

• Journal of Korean Society of Forest Science
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• v.83 no.2
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• pp.191-204
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• 1994

Due to its topographic complexities and various climatical condition, Korea exhibits diverse forest types. Dominant tree species in this zone are Quercus spp., Betula spp., Zelkova spp., Fraxinus spp., Pinus densiflora, Pinus koraiensis, and Pinus thunbergii ete. Genetic conservation in forest species in Korea there are three ways ; one is in situ, other is ex situ and third is in-facility conservation. In situ conservation include that are the present status of conservation of rare and endangered flora and ecosystem, the reserved forest, the national and provincial park, and the gene pool of natural forests. Ex situ conservation means to be established the new forest from in situ forest stands, progeny and provenance test populations, seed orchard and clone banks, and gene conservation in-facility. As a tool for low temperature storage, several aspects on in vitro system were studied ; (1) establishment of in vitro cultures from juvenile and/or rejuvenated tissues, (2) induction of multiple shoots from the individual micropropagules, (3) elongation of the proliferated shoots. Studies on cold storage for short-and long-term maintenance of in vitro cultures under $4^{\circ}C$ in the refrigerator were conducted. For the cryopreservation at $-196^{\circ}C$, various factors affecting survivability of the plant materials are being examined. The necessity of gene conservation of forest trees is enlarged not only to increase the adaptability for various environments but also to gain the breeding materials in the future. For effective gene conservation of forest trees, I would like to suggest followings ; 1. Forest stands reserved for other than the gene conservation purposes such as national parks should be investigated by botanical and gene-ecological studies for selecting bio-diversity and gene conservation stands. 2. Reserved forest for gene pool should be extented both economically important tree spp. and non-economical species. 3. Reserved forest for progeny test and clone bank should be systematically investigated for the use of Ex situ forest gene conservation. 4. We have to find out a new methodology of genetic analysis determining the proper and effective size of subpopulation for in situ gene conservation. 5. We should develop a new tree breeding systems for successful gene conservation and utilization of the genetic resources. 6. New method of in-facility gene conservation using advanced genetic engineering should be developed to save time and economic resources. 7. For the conservation of species with short-life span of seed or shortage of knowledge of seed physiology, tissue culture techniques will be played a great role for gene conservation of those species. 8. It is are very useful conservation not only of genes but of genotypes which were selected already by breeding program. 9. Institutional and administrative arrangements including legistlation must be necessarily taken for gene conservation of forest trees. 10. It is national problems for conservation of forest resources which have been rapidly destroyed because of degenerating environmental condition and of inexperienced management system of bio-diversity and gene conservation. 11. In order to international cooperation for exchanging data of bio-diversity and gene conservation, we should connect to international net works as soon as possible.

• Journal of the HCI Society of Korea
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• v.12 no.4
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• pp.65-73
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• 2017

While electricity demand is generally increasing, stably controlling supply is becoming a serious challenge because renewable energies are becoming popular and often their productions are dependent on the weather. The 'demand response' programs can be used to complement the problems of renewable energies, and therefore their role is becoming increasingly important. This study provides an analysis of a demand response pilot that was conducted in Korea. The study first focused on questionnaire surveys and in-depth interviews, and the data was used to perform a Technology Acceptance Model (TAM) analysis. The goal of the pilot was to have the residential users reduce their power consumptions when an energy reduction mission is issued during peak load hours. The experimental subjects consisted of two groups with different characteristics. Subjects in group A obtained smart meters as an optional function of IoT platform service provided by a mobile service company, and received a charge deduction as their compensation. Subjects in group B either voluntarily purchased smart meters as individuals or received them by participating in an energy self-sufficient village program that was run by a local government, and were entitled to a donation as their compensation. With the analysis, group A was found to fit the extended technology acceptance model that includes perceived playfulness in addition to perceived ease of use and perceived usefulness. On the contrary, group B failed to fit the model well, but perceived usefulness was found to be relatively more important compared to group A. The results indicate that the residential energy groups' behavior changes are dependent on each group's characteristics, and group-specific DR design should be considered to improve the effectiveness of DR.

• Journal of Korean Society of Forest Science
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• v.96 no.6
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• pp.667-675
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• 2007

The genetic diversity and the spatial structure in two populations of Abelia tyaihyoni in Yeongwol region were studied by employing I-SSR markers. In spite of the limited distribution and small population sizes of Abelia tyaihyoni, the amount of genetic diversity estimated at the individual level was comparable to other shrub species (S.I.=0.336, h=0.217). Genetic diversity at the genet level was very similar to that at individual level. (S.l.=0.339, h=0.219). About 18.7 percent of total variation was allocated between two populations, which was slightly higher or similar level as compared with other shrub species. Genotypic diversity estimated by the ratio of the number of genets ($N_G$) over the total number of individuals (N) and a modified Simpson's index ($D_G$) were also higher than those of other shrubs. The maximum diameter of a genet did not exceed 5.5 m. The high level of gene and genotypic diversity, and the relatively limited maximum diameter of a genet suggested that the clonal propagation is not the most dominant factor in determining the population structure of Abelia tyaihyoni. Spatial autocorrelation analysis revealed significant spatial genetic structure within 12 m and 18 m distances in two populations A and B, respectively. Autocorrelations among individuals at the both individual and genet levels in each population didn't show any considerable differences. As a sampling strategy for ex-situ conservation of populations showing continuous distribution, a minimum distance of 18 m between individuals was recommended. For the populations with many segments, it was considered very crucial to sample materials from as many segments as possible.

• Journal of Science Education
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• v.41 no.1
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• pp.16-35
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• 2017

This study attempted to investigate the relationship among engineering students' creativity, engineering education accreditation, gender, and academic year. To be specific, fist, we examined the validity and reliability of the instrument for measuring engineering students' creativity by conducting Rasch analysis. Second, we compared level of creativity in terms of gender, academic year, and engineering education accreditation by using three-way ANOVA. Third, correlations among four constructs of creativity were examined. Fourth, latent classes with respect to creativity within the participants were identified using polytomous latent class analysis (poLCA). Data were collected from 2098 engineering students by using instrument for measuring four different constructs (creative cognition, creative tendency, collaboration, environment). By using Rasch analysis, validity and reliability of instrument for measuring creativity were confirmed. And the results of three-way ANOVA showed that there were significant difference in creativity in terms of gender. Female students showed the low level of creativity compared with male students. Also there were significant difference in creativity except creative cognition factor in terms of academic year. But there were no significant difference in creativity between students who participated engineering education accreditation program and the others. All constructs of creativity were significantly correlated with each others. Lastly, poLCA results showed that there were three distinct subgroups within engineering students in terms of the level of creativity. In the subgroup with low creativity, there were more female and first year students. Based on these findings, we discussed education for engineering students' creativity.

• The Journal of the Korea Contents Association
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• v.18 no.4
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• pp.380-387
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• 2018

The purpose of this study is to examine the effects of extracurricular activities such as creative experiential activities, life guidance, and counseling activities on school satisfaction of students and parents who are educational demanders, and to suggest practical and policy alternatives to improve school satisfaction. For this purpose, 1,242 elementary, middle and high school students in Seoul and 1,023 parents were tested through analysis of t-test, and regression. Three main results were derived. First, extracurricular activities had a statistically significant effect on school satisfaction. Second, in general, parents in Korea are expected to emphasize the entrance examination-oriented curriculum with a high degree of education, but the higher the extracurricular activities of students and parents, the higher the school satisfaction. Third, there was a difference in school satisfaction by education class, but the higher the education level, the lower the school satisfaction was. It can be seen that extracurricular activities are needed to increase the educational satisfaction of students and parents who are educational demanders. In addition, it is necessary to reinforce the extracurricular activities to the high school which is the upper grade school now.