• Title/Summary/Keyword: Community composition

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An Investigation of Intellectual Structure on Data Papers Published in Data Journals in Web of Science (Web of Science 데이터학술지 게재 데이터논문의 지적구조 규명)

  • Chung, EunKyung
    • Journal of the Korean Society for information Management
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    • v.37 no.1
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    • pp.153-177
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    • 2020
  • In the context of open science, data sharing and reuse are becoming important researchers' activities. Among the discussions about data sharing and reuse, data journals and data papers shows visible results. Data journals are published in many academic fields, and the number of papers is increasing. Unlike the data itself, data papers contain activities that cite and receive citations, thus creating their own intellectual structures. This study analyzed 14 data journals indexed by Web of Science, 6,086 data papers and 84,908 cited references to examine the intellectual structure of data journals and data papers in academic community. Along with the author's details, the co-citation analysis and bibliographic coupling analysis were visualized in network to identify the detailed subject areas. The results of the analysis show that the frequent authors, affiliated institutions, and countries are different from that of traditional journal papers. These results can be interpreted as mainly because the authors who can easily produce data publish data papers. In both co-citation and bibliographic analysis, analytical tools, databases, and genome composition were the main subtopic areas. The co-citation analysis resulted in nine clusters, with specific subject areas being water quality and climate. The bibliographic analysis consisted of a total of 27 components, and detailed subject areas such as ocean and atmosphere were identified in addition to water quality and climate. Notably, the subject areas of the social sciences have also emerged.

Synecological Study of the Forest Vegetation in Mt. Naeyeon, Pohang City, Korea - Focusing on the Southern Area - (내연산 산림식생에 대한 군락생태학적 연구 - 남쪽 지역을 중심으로 -)

  • Kim, Hak-Yun;Kim, Jun-Soo
    • Korean Journal of Environment and Ecology
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    • v.31 no.3
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    • pp.318-328
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    • 2017
  • In order to provide basic data for the ecological management of forest vegetation in Southern Naeyeon Mountains, A total of 149 sample plots were selected and vegetation survey was carried out by the phytosociological method of the ZM school to classify vegetation types and to grasp ecological characteristics. The forest vegetation was divided into 10 types in terms of species composition, and had a unit hierarchy of 2 community groups, 4 communities, 6 sub-communities and 6 variants. A total of 19 types of physiognomic vegetation were identified based on uppermost dominant species, of which 18 were natural vegetation and 1 was artificial vegetation. As a result of the analysis of the importance values of constituent species, Quercus mongolica, a potentially natural vegetation element, was found to be relatively more important in most stands than other species, and excluding the artificial interference, most of the areas except for some sites would be changed to Q. mongolica forest. In order to understand the spatial distribution of forest vegetation, 1/5,000 large-scale physiognomic vegetation map was created by the uppermost dominant species. As a result, natural vegetation accounted for 98.2%, the number of vegetation patches was 733 and the average area per patch 3.93ha.

Long-term Changes of Fish Ecological Characteristics on the Gwanpyeong Stream Development and the Necropsy-based Health Assessments (관평천 개발에 따른 장기간 어류 생태적 특성 변화 및 해부학적 건강도 평가)

  • Oh, Ja Yun;Lee, Sang-Jae;An, Kwang-Guk
    • Korean Journal of Environment and Ecology
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    • v.34 no.4
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    • pp.282-293
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    • 2020
  • This study investigated a long-term variation trend of water quality, fish compositions, and ecological health conditions in the Gwanpyeong stream located in the nearby Daejeon metropolitan city to understand the impact of urban development projects on the aquatic ecosystem. The sampling was made in four surveys (2009, 2010, 2016, 2019) before and after urbanization. The urban development was conducted in 2008, resulting in the stream's ecological disturbance, and the stream restoration was conducted in 2012. Thus, stream monitoring was conducted to analyze the ecological trends before and after the restoration. The multi-metric models for Fish Assessment Index(FAI) and necropsy-based Health Assessment Index(HAI) were applied in the fish community and organ-level, respectively, to assess the ecological health of the stream. Minimum turbidity and chlorophyll-a(Chl-a) occurred in the mid-stream(St. 2), and this was probably due to rapid current velocity in the riffle zone. We collected 18 fish species, and the dominant species was Zacco platypus (40.6%). In 2016 immediately after the stream restoration, the relative proportions of sensitive species and insectivore species were the highest along with highest values in the species diversity and species richness index, resulting in the best condition in the ecological health, based on FAI model values. However, the ecological health, based on the FAI, became worse in the latest survey conducted in 2019. The analysis of the HAI model based on the organ-level approach showed skin erosion in the fish of upper stream, kidney defects in downstream, and the liver and gill defects observed in all sites, indicating that the anatomical health was also affected.

Vegetation Characteristics of Geumnamhonam·Honam Ridge Areas Understood through Quantitative Vegetation Analysis (정량적 식생분석을 통한 금남호남·호남정맥 마루금 일대의 식생 특성)

  • Park, Seok-Gon;Kang, Hyun-Mi
    • Korean Journal of Environment and Ecology
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    • v.34 no.4
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    • pp.304-317
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    • 2020
  • This study conducted selected two sites in Geumnamhonam and four sites in Honam-Jeongmaek for vegetation survey with consideration to the location environment and anthropogenic impacts to investigate the vegetation structures of the Geumnamhonam-Jeongmaek·Honam-Jeongmaek ridge areas. Using TWINSPAN (two-way indicator species analysis), each of the two ridge areas were categorized into seven plant communities. The differential species in the TWINSPAN technique indirectly represent the environmental factors of plant communities, and the community types of the two ridge areas were divided based on environmental factors such as altitudes above sea level, soil moisture, and disturbance. These results were in harmony with the environmental factors of the DCA (detrended correspondence analysis) axis 1. In the low-lying areas of both ridge areas, afforestation tree species such as Pinus rigida and P. thunbergii were in competition with native tree species. As such, in the low-lying areas, artificial vegetation disturbance was severe due to afforestation and development projects. In relatively highland areas, such as upper slopes, and top areas, in the ridge, the vegetation type with the dominance of Quercus mongolica, Q. variabilis, and P. densiflora was preserved well. As for differences between the two ridge areas, communities dominated by Q. mongolica were distributed widely in Geumnamhonam-Jeongmaek because of the altitudes above sea level, and the latitude of this ridge area are higher than those of Honam-Jeongmaek. On the other hand, communities dominated by P. densiflora were distributed along with communities dominated by Q. mongolica, and communities dominated by Q. variabilis appeared in Honam-Jeongmaek because it is adjacent to the south coast. In quantitative vegetation analysis such as TWINSPAN and DCA, changes in species composition and the extracting environmental factors that cause the changes are important. To that end, the removal of accidental emergent species, the establishment of an investigation plan that assumes environmental factors, and the selection of the optimal analytical method suitable for the characteristics of the survey data are necessary.

An Explorative Study on Analysis of Social Welfare Regime based on Political Philosophical Interpretation of Marshall's Social Citizenship (마셜 사회권의 정치철학적 해석을 통한 사회복지 레짐 분석에 관한 탐색적 연구)

  • Na, Young-Hee;Kim, Gi-Duk
    • Korean Journal of Social Welfare
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    • v.61 no.4
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    • pp.265-285
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    • 2009
  • The purpose of this study aims to interpretate the dynamics of the Social Citizenship of Marshall, and thereby to search a tool to evaluate the characteristics of social citizenship working at different welfare states and its developmental level. The existing study on the Marshall's Citizenship including the social citizenship mainly used to focus on Citizenship's composition, its basis and justification of rights to social citizenship. This implies to relatively neglect the concretization of social citizenship into social policy and its application to reality. Against this background, this study focuses on the embryological dynamics of Marshall's Social Citizenship and is to justify that social citizenship is historical concept which has been emerged in the complex development of modern capitalism, so called, the hyphenated society composed of Democracy, Capitalism and Welfarism. The study is to provide that complexity and dynamics of Marshall's social citizenship could be classified into some typology along political philosophical issues surrounding relationship between state and market and individual and community, and such typology can match the welfare state regime suggested by Esping-Anderson. Finally, this study is to prove that such typology could be used an analysis tool for current welfare states in the light of the welfare state regime.

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Study on the Activation Plan Using Specific Cultural Cluster -Focus on religious cultural town composition in Andong City- (특정 문화시설 집적지의 활성화 방안 연구 -안동시 종교문화타운 조성을 사례로-)

  • Kwon, Ki-Chang;Yoon, Sungwook
    • The Journal of the Korea Contents Association
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    • v.14 no.10
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    • pp.776-787
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    • 2014
  • When a urban religious cluster is transformed into a religious cultural town, it will help restore the urban community spirit and boost the social, cultural competence of a city. It can be achieved through the desirable values associated with love, service, reconciliation, and communication of each religion combined together. Also, it can facilitate urban regeneration and local revitalization. This study has established measures to stimulate Mokseong-dong in Andong City, an area with lots of religious, cultural facilities, by transforming it into a religious cultural town. The purpose is to play a key role in leading the regional education and culture and stimulating the area. To establish an identity of the religious, cultural town with multiple religions, a development concept was created under the theme of reconciliation, communication, and service. Specifically, a measure to reorganize the area into a space for reconciliation, communication, and service was created with an operation and stimulation program, focusing on the religious facilities. In addition, in order to transform the religious town into a hub of urban regeneration, measures to achieve the following were created: growing together with the surrounding area; establishing a cooperation system involving local residents; establishing an administrative, financial support system. If the religious, cultural town is revitalized, it can boost the quality of local residents and stimulate the local economy.

Fauna Diversity at the Deukjin River, Hapcheon-gun, Korea (합천군 덕진천의 동물상에 대한 다양성)

  • Huh, Man Kyu
    • Journal of Life Science
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    • v.28 no.1
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    • pp.105-109
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    • 2018
  • Biodiversity (or biological diversity) is defined as the variability of living organisms, the "diversity of life on Earth," and the complex relationships that make up ecosystems. This study aimed to investigate the spatial and temporal patterns in animal species composition and diversity at the Deukjin River, located in Hapcheon Province, Korea. The fauna community at the Deukjin River during 2016 season was identified with a total of 55 taxa, representing the following six classes: Mammalia (mammals), Actinopterygii (bony fish), Chondrichthyes (cartilaginous fish), Aves (birds), Amphibia (amphibians), Reptilia (reptiles), and invertebrates. The Berger - Parker index (BPI) for mammals varied from 0.233 (Station A) to 0.333 (Station D). The Shannon - Weaver index (H') and two diversity indexes (N1 and N2) for mammals and birds in the upper region were higher than those in the lower region. The values of ${\beta}$-diversity for animals varied from 0.229 for fish to 0.339 for invertebrates. The richness indices for animal taxa also varied among the stations and seasons. Station A showed considerably high richness in mammals, birds, and reptiles/amphibians. Although the richness indices (R1 and R2) for six animal kingdoms during the seasons were different from each other, the difference was not significant (p<0.05). The evenness indices for five animal kingdoms were different from each other, but again, the difference was not significant (p<0.05).

Prevalence of Hyperhomocysteinemia and Related Factors in a Community-based Health Examination Survey: A Cross-sectional Study (경기도 일개 지역사회 대표집단에서 고호모시스테인혈증의 유병률 및 관련요인에 대한 단면조사연구)

  • Kim, Soo-Jeong;Lim, Kyung-Sook;Song, Mi-Sook;Kang, Yeon-Ji;Lee, Soon-Young
    • Journal of Preventive Medicine and Public Health
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    • v.42 no.5
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    • pp.337-342
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    • 2009
  • Background : Many previous studies have shown that elevated homocysteine in the serum is a well known risk factor for cardiovascular disease and this is associated with other risk factors for cardiovascular disease, but any Korean data on this is limited. Objectives : This study aimed to calculate the prevalence of hyperhomocysteinemia and to analyze the relation between elevated homocysteine and the lifestyle factors of Korean adults. Methods : We conducted a cross-sectional survey that included 650 men and 743 women (age range, 20 to 79 years) who were residents of Gwangju City in Gyeonggi-do. These subjects participated in the health interview and examination survey from November to December 2005. The total homocysteine, total cholesterol, HDL-cholesterol, LDL-cholesterol, and triglyceride in the serum were measured. All the participants had their body composition measured such as height and weight, and we obtained health-related behavioral information through the self-entry questionnaire. Results : Very right-handed skewed distributions of homocysteine were shown in men and women. The prevalence of hyperhomocysteinemia was 22.6% in men and 13.7% in women in Gwangju city. On the multiple logistic regression analysis, hyperhomocysteinemia was associated with age (OR=1.02, 95% CI=1.01-1.04), male gender (OR=1.60, 95% CI=1.02-2.52), severe general physical activity (OR=0.32, 95% CI=0.15-0.69) and nutrient consumption (OR=0.49, 95% CI=0.31-0.76). Conclusions : There is a great prevalence of hyperhomocysteinemia in adults of Gwangju City, Korea and it was associated with both genetic factors and lifestyle risk factors. This study can suggest that comprehensive lifestyle modification is needed in order to diminish the prevalence of hyperhomocysteinemia and to prevent CVD.

Molecular Monitoring of Eukaryotic Plankton Diversity at Mulgeum and Eulsukdo in the Lower Reaches of the Nakdong River (낙동강 하류 물금과 을숙도 수환경의 진핵 플랑크톤 종조성에 대한 분자모니터링)

  • Lee, Jee Eun;Lee, Sang-Rae;Youn, Seok-Hyun;Chung, Sang Ok;Lee, Jin Ae;Chung, Ik Kyo
    • The Sea:JOURNAL OF THE KOREAN SOCIETY OF OCEANOGRAPHY
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    • v.17 no.3
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    • pp.160-180
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    • 2012
  • We have studied the eukaryotic plankton species diversity to compare the community structure of fresh and brackish waters in the lower reaches of the Nakdong River using metagenomic methods. We constructed 18S rDNA clone libraries of total DNAs extracted from environmental water samples collected at Mulgeum (MG100929, fresh) and Eulsukdo bridge (ES, brackish). Through the steps of colony PCR, PCR-RFLP, sequencing and similarity analysis, we discovered the diverse species composition of eukaryotic plankton. Total 338 clones (170 at MG100929 and 168 at ES) were analyzed, and then we found 74 phylotypes (49 for MG100929 and 25 for ES). From the phylogenetic analysis, we confirmed various eukaryotic plankton of broad range of taxonomic groups, including Stramenopiles, Cryptophyta, Viridiplantae, Alveolata, Rhizaria, Metazoa, and Fungi. We also found several unreported species in Korea and candidates of new taxonomic entities at levels higher than genus. Especially, the cryptic species diversity including unreported phylotypes of Pirsonia (Stramenopiles) and Perkinsea (Alveolata) suggests that the molecular monitoring method can produce new informative biological data in monitoring the changes in the Nakdong River Mouth ecosystem.

The study of expressing Theme by symbolic images in film(Focusing on the Michelangelo Antonioni's film "Blow-up(1966)) (상징적 이미지를 통한 주제의제표현에 대한 연구 (미켈란젤로 안토니오니의 영화"확대(1966)"를 중심으로))

  • Lee, Tae-hoon
    • Journal of Digital Convergence
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    • v.15 no.8
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    • pp.401-407
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    • 2017
  • The movie content, which is more firmly established as the best popular art, is the main entertainment content that reflects the current trend based on the most common contents and consensus on the culture of the global community. However, since modern films are more sensitive to popular tastes that appeal to amusement and stimulating emotions, reduction of opportunities for intellectual pleasure through appreciation of artistic expressions is inevitable and unavoidable. In this paper, however, we try to analyze the symbolic meaning of the short in the film, to grasp the inner nature of the film projected in the film, and ultimately to express the theme message. Effective symbolism exposes emotions to create moods and moods, and to express deeply with the audience, expressing the inner psychological state and will of the person. By conveying the meaning behind the surface image to the audience unconsciously, it is possible to transmit the message intentionally more effectively and strongly. In addition, it can be expected to create effects such as an associative action or an increase in contrast energy on the screen through collision of irony and image in the expectant emotion composition of the audience.