• Journal of the Korean Home Economics Association
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• v.39 no.4
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• pp.61-78
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• 2001

The purpose of this study was not only to identify adolescents' leisure culture, but most importantly, reseal variables that world improve the degree of leisure satisfaction. A total of 1125 questionnaires were used as for the final data analysis. The study revealed the following results. 1. Adolescents spent leisure expenses, from ten thousand won to thirty thousand won a month on the average, and they mostly preferred computer-related leisure activities. Also, they were found to obtain leisure information from their friends and recognize social obstacles to prohibit leisure activities. Adolescents degree of leisure satisfaction was relatively not very high. 2. Significant differences were partly found in adolescents' leisure cloture according to variables related to individual, school and family. Also, Adolescents showed significant differences according to gender, study load and communication with their mother 3. Adolescents had greater leisure satisfaction when they had much money to spend on leisure, enjoyed sports activities, and recognized leisure obstacles lowly.

• Journal of the Korean Home Economics Association
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• v.38 no.8
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• pp.125-140
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• 2000

The purpose of this study is to find out the high school student's need for the program. The data was collected from 1125 high school students and their parents. The results of this study are like the following. 1 High school students and their parents all showed more than 3 points on the need for the program. 2. They revealed the highest need for programs on school as well as peer-related tasks and self-related tasks, respectively. On the other hand, parents were found to have the need for programs than student do. 3. Significant differences were found among students in their major, class type, and also among parents in gender of their children, class type, residential area, education status, and monthly average income. 4. Highschool-students and their parents all showed the highest points and displayed interest in selecting academic course suitable for their aptitude.

• Proceedings of the Korean Society of Fisheries Technology Conference
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• 2000.05a
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• pp.202-203
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• 2000

광양만은 여천산업단지, 광양제철소, 광양콘테이너부두, 하동화력 등 국가기간 시설이 밀집되어있고, 여러 도시로 둘러 쌓여 있는 반폐쇄적 내만으로 해양생태학적 관심이 집중되고 있는 지역중의 한곳이다. 광양만은 1982년 10월 연안오염특별관리해역으로 지정된 이후 많은 조사가 수행되었고, 앞으로 대단위 연안 매립사업이 예정되어 있어 체계적이고 장기적인 연안환경 관리가 필요한 시점에 있다(박 등, 1984; 윤과 박, 1992; 여수대학교, 1997; 환경부, 1998; 수산진흥원, 1999), 본 연구는 광양만 수질 및 해양퇴적물의 이·화학적 특성을 조사하여 광양만권역 종합오염도 평가 및 해양생태계 관리에 필요한 기초자료를 확보할 목적으로 조사되었다. (중략)

• Journal of the Korean Home Economics Association
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• v.38 no.12
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• pp.15-28
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• 2000

The purpose of this study is to analyze Adolescents spending habits and examine it. The data was collected from 1125 high school students and their parents nationwide. The resets are as follows. 1. About seventy eight percent of the responded students own relatively high-priced goods such as brand-name jeans (59.1%), a mobile phone (31.9%), perfume with a price of 50,000 won or more (26.5%), CD Player (24.4%) or electronic pocket diary (17.1%). The percentage varies according to region. 2. The Adolescents tendency for conspicuous consumption is reflected by 2.92 points out of a total 5 points, while their mothers'marks 2.18 points. By region, conspicuous consumption behavior is more common in Seoul than in other small and medium-sized cities and towns. Also, the more mother attribute children's behavior internally, the lower the childeren's competence is.

• Journal of the Korean Home Economics Association
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• v.38 no.12
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• pp.207-223
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• 2000

This study was the explorable research on the actual condition comparatively analyzing values targeting the 1125 pairs of high school students and their parents. This study revelled the following results. First, significant differences were found in high school students'values according to their gender, class type, and residential area. Thus, values are shown differently by personal backgrounds or characters among peer group. Second, high school students and their parents revealed significant differences in values of life, home, society and nation.

• Korean Journal of Environmental Biology
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• v.40 no.4
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• pp.525-549
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• 2022

The process of biological invasion is led by the dynamics of a population as a demographic and evolutionary unit. Spatial structure can affect the population dynamics, and it is worth being considered in research on biological invasion which is always accompanied by dispersal. Metapopulation theory is a representative approach to spatially structured populations, which is chiefly applied in the field of ecology and evolutionary biology despite the controversy about its definition. In this study, metapopulation was considered as a spatially structured population that includes at least one subpopulation with significant extinction probability. The early phase of the invasion is suitable to be analyzed in aspects of the metapopulation concept because the introduced population usually has a high extinction probability, and their ecological·genetic traits determining the invasiveness can be affected by the metapopulation structure. Although it is important in the explanation of the prediction of the invasion probability, the metapopulation concept is rarely used in ecological research about biological invasion in Korea. It is expected that applying the metapopulation theory can supply a more detailed investigation of the invasion process at the population level, which is relatively inadequate in Korea. In this study, a framework dividing the invasive metapopulation into long- and middle-distance scales by the relative distance of movement to the natural dispersal range of species is proposed to easily analyze the effect of a metapopulation in real cases. Increased understanding of the mechanisms underlying invasions and improved prediction of future invasion risk are expected with the metapopulation concept and this framework.

• Ecology and Resilient Infrastructure
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• v.2 no.2
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• pp.108-117
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• 2015

This study was carried out to assess problems related to legislative regulations and guidelines concerning some biological assessment systems applied to stream corridor in Korea. We comparatively reviewed the law of stream corridors and the guidelines for master plan concerned, and the law of water quality and health assessment criteria for the aquatic ecosystem concerned. Stream environments were not managed effectively due to the absence of detail regulations and the criteria for stream assessment. A biological assessment system was not equivalently integrated within the management of water resources in process implementation of projects resulting from the dualistic management system for stream corridors in Korea. The current biological assessment system was reflected to mainly physical habitats or only oriented to some aquatic species correlated with water quality. This system was also recognized as part of environment impact assessment based on an intensive survey method of most biological taxa. Conclusively rapid and quantitative assessment techniques based on advanced organisms, such as vegetation, fish and birds, etc. should be urgently provided for considering as representative indicators of stream conditions in Korea.

• Journal of Korean Society of Forest Science
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• v.109 no.2
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• pp.124-135
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• 2020

Alder (Alnus japonica) forests are representative of the wetland in East Asia, including Korea. In the past, alder forests were relatively common in various habitats such as mountains, riversides, back marshes, and alluvial plains. However, this plant community has recently become rare due to increasingly arid habitats and the influence of various land uses. In this study, we identify the synecological characteristics of alder (A. japonica) forests distributed naturally in the mountainous wetlands of Korea and provide basic data for their systematic conservation and management in the future. Based on vegetation survey data collected from 66 alder forests, community types were classified using the methods of the Zürich-Montpellier School of Phytosociology and two-way indicator species analysis. There were eight community types: Styrax obassia, Weigela subsessilis-Fraxinus mandschurica, Spiraea fritschiana, Viola verecunda, Impatiens textori-Spiraea salicifolia, Glyceria leptolepis, Molinia japonica, and Lindera obtusiloba-Quercus acutissima. These community types constituted a vegetation unit hierarchy of two communities, four subcommunities, and eight variants. In addition, the ecological characteristics of each community type were compared (including total coverage per 100 square meter, importance value index, constancy class, life-form composition, diversity indices, community similarity coefficient, and indicator species).

• Journal of the Korean Home Economics Association
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• v.48 no.2
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• pp.51-62
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• 2010

The primary purpose of this study was to employ an ecological model to analyze relative magnitudes of significant predictors affecting school life satisfaction in Korea Science Academy. The instruments used for this study were school life satisfaction Scale, Self-Efficacy Scale, Relationship Skill Scale, Internal Control Scale, Emotional Intelligence Scale, and FACE IV Scale. Data were collected by purposive sampling of 180 students of the Korea Science Academy in Busan, Korea. The data were analyzed by frequency, percentile, mean, standard deviation, Cronbach' ${\alpha}$, Pearson's productive correlation, hierarchical regression and stepwise regression, using SPSS 15.0+WIN program package. The results were as follows: 1. The level of school life satisfaction in Korea Science Academy was found to be high(Mean = 4.24, SD = 0.57). 2. Model IV was the most powerful. It explained 49.7% of the school life satisfaction. 3. Relationship with friends(${\beta}$ = .443), with teachers(${\beta}$ = .273), and self-efficacy(${\beta}$ = .201) were significant factors in explaining the school life satisfaction. The three variables explained 49.9% of school life satisfaction.

• Proceedings of the Korea Water Resources Association Conference
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• 2019.05a
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• pp.396-396
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• 2019

습지는 가장 생산적인 생태계 중 하나이며, 인류에게 수문학적, 경제적, 문화적 가치로도 매우 귀중한 역할을 하고 있다. 하지만 기후변화와 인간의 영향으로 수위저하와 건조, 수문체계에 변화를 주어 습지의 건조화 현상이 나타나고 이로 인해 생태계에도 영향을 미치고 있다. 특히 산지습지는 인위적 간섭에 매우 취약하고 환경변화에 민감하여 불규칙한 강수패턴 및 무분별한 개발은 습지수문환경에 영향을 미쳐 습지의 건조화를 심화시키는 원인이 되고 있다. 그 결과 자연적으로 습지의 면적이 감소하고 식생의 패턴 변화로 다양한 생물들과 보호가 필요한 종들이 사라질 것이므로 변화에 대응하기 위해서 건조화를 방지할 필요가 있다. 따라서 본 연구에서는 습지 내 지하수위 저하 또는 유입 유출량의 변화로 습지 토양의 수분이 감소하여 말라가는 현상을 습지 가뭄이라 정의하고 가뭄지수를 활용하여 이를 지수화 하였다. 현재 산지습지를 대상으로 가뭄을 지수화 시킨 선행연구가 거의 없기 때문에 향후 산지 습지의 가치를 보존하고 생태계 관리의 목적으로 후속 연구의 방향을 제시하는데 도움을 줄 것으로 예상된다.