• Journal of dental hygiene science
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• v.18 no.6
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• pp.380-388
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• 2018

This research team extracted keywords from 953 papers published in the Journal of Dental Hygiene Science from 2001 to 2018 for keyword and centrality analyses using the Keyword Network Analysis method. Data were analyzed using Excel 2016 and NetMiner Version 4.4.1. By conducting a deeper analysis between keywords by overall keyword and time frame, we arrived at the following conclusions. For the 17 years considered for this study, the most frequently used words in a dental science paper were "Health," "Oral," "Hygiene," and "Hygienist." The words that form the center by connecting major words in the Journal of Dental Hygiene through the upper-degree centrality words were "Health," "Dental," "Oral," "Hygiene," and "Hygienist." The upper betweenness centrality words were "Dental," "Health," "Oral," "Hygiene," and "Student." Analysis results of the degree centrality words per period revealed "Health" (0.227), "Dental" (0.136), and "Hygiene" (0.136) for period 1; "Health" (0.242), "Dental" (0.177), and "Hygiene" (0.113) for period 2; "Health" (0.200), "Dental" (0.176), and "Oral" (0.082) for period 3; and "Dental" (0.235), "Health" (0.206), and "Oral" (0.147) for period 4. Analysis results of the betweenness centrality words per period revealed "Oral" (0.281) and "Health" (0.199) for period 1; "Dental" (0.205) and "Health" (0.169) for period 2, with the weight then dispersing to "Hygiene" (0.112), "Hygienist" (0.054), and "Oral" (0.053); "Health" (0.258) and "Dental" (0.246) for period 3; and "Oral" (0.364), "Health" (0.353), and "Dental" (0.333) for period 4. Based on the above results, we hope that further studies will be conducted in the future with diverse study subjects.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2008.10a
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• pp.81-84
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• 2008

3D 인터렉티브 텍스쳐 페인팅은 3차원 공간상에서 3D 모델 데이터의 표면에 직접 브러쉬를 이용하여 페인팅하는 것을 말한다. 3D 인터렉티브 텍스쳐 페인팅을 구현하기 위해서는 매개변수화와 브러쉬 드로잉이 중요하다. 본 논문에서는 3D 공간상에서 평균값좌표를 이용하여 3D 모델의 표면 메쉬상에 텍스쳐 페인팅을 수행하는 효과적인 방법을 제안한다. 기존 연구가 가지고 있는 문제점은 반복적인 매개변수화의 과정과 그로 인한 해상도의 큰 변화이다. 이러한 반복적인 매개변수화 과정을 피하기 위하여 주어진 메쉬에 한 번의 전역적 매개변수화를 적용시키고, 3차원상의 메쉬에 직접적으로 페인팅 할 수 있는 인터페이스를 제공하였다. 결과적으로 2차원으로의 텍스쳐 수정 과정 및 랜더링 과정을 반복적으로 적용할 필요가 얼게 되어 3차원 모델러에게는 매우 효율적인 방법을 제공할 수 있다.

• The Journal of the Korea Contents Association
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• v.12 no.2
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• pp.398-410
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• 2012

This study aims to investigate the effect of perceived supervisor support(PSS) on employees' in-role and extra-role performance by examining the mediating role of job-based psychological ownership(JBPO). Data were collected from 269 employees from a variety of companies. Both regression analysis and structural equation modeling were used. Previous research has found a positive relationship between PSS and job performance. However, empirical analysis has not yet demonstrated PSS-performance relationships mediated through JBPO. Thus, this study investigated this mediation in predicting in-role and extra-role performance. In the current study, JBPO was found to fully mediate the relationship between PSS and in-role performance and to partially mediate the relationship between PSS and extra-role performance. Future discussions and practical implications are discussed.

• Journal of the Korean Society of Child Welfare
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• no.59
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• pp.59-86
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• 2017

The purpose of this study was to investigate the effects of childhood obesity on school adjustment and whether the effects were mediated by withdrawal. Using the 2015 Korea Welfare Panel Study data, this study conducted a hierarchical regression analysis to examine the mediating effects of withdrawal on the relationship between childhood obesity and school adjustment. In addition, a Sobel test was used to consider the statistical significance of the mediating effects. Findings were as follows: First, childhood obesity had a negative influence on school adjustment. Second, childhood obesity affected withdrawal positively. Third. withdrawal had a negative impact on school adjustment. Fourth, withdrawal was found to partially mediate the relationship between childhood obesity and school adjustment. Based on the results, implications were discussed to intervene in preventing childhood obesity and to reduce the negative effects of childhood obesity.

• Journal of Korean Society of Forest Science
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• v.110 no.1
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• pp.22-34
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• 2021

The implementation of the sunset provision of unexecuted urban parks in Seoul has been postponed; however, the mentioned parks still remain vulnerable since they can be subject to development under certain circumstances. Local governments may purchase the parks to prevent their loss but are constrained due to limited resources. The purpose of this study is to prioritize the purchase of unexecuted urban parks in Seoul based on landscape connectivity, which represents the important role of allowing the movement of wildlife and providing biodiversity in urban environments. In this study, we used four potential scenarios (PB100, PB1, PA100, PA1), which reflects the degree of land cover change resulting from the implementation of the sunset provision, and the role of Han River as a conduit or barrier for wildlife movement. Landscape connectivity was evaluated by calculating current flow betweenness centrality (CFBC). This was used to rank the importance of the unexecuted urban parks in Seoul. The results demonstrated that the implementation of the sunset provision will greatly decrease the connectivity of all parks in Seoul and particularly more so for parks in the southern part of the city. In addition, the results suggested that the low connectivity of Han river will diminish the connectivity around Bukhansan Mountain in the northern part of Seoul. Our study can be used for the prioritization of purchase, since it has the ability to evaluate the anticipated vulnerability of each park's connectivity after the sunset provision.

• Korean Journal of Environment and Ecology
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• v.25 no.3
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• pp.412-420
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• 2011

This study was conducted to quantitatively analyze the temporal change of green space network at multi-scales from 1975 to 2006 with the application of graph theory in Seoul, Korea. Remarkable change of connectivity was detected in green space networks at the scale ranging from 1,000 ~ 1,600 m during 30 years. Green spaces and their networks have been restoring after 1990 since forest areas had been fragmented in 1975. In 2006, we identified the important core habitat areas that can sustain diverse wildlife species and stepping stones composed of small patches that can link these core habitat areas. Green spaces showed high correlation with the relative importance value of green space connectivity. So, this study could graphically represent green space networks of Seoul City. Green spaces of core areas distributed at the northern and southern boundary, and those of stepping stones possessing the high value of betweenness centrality consisted at the middle, eastern and western boundary. These results indicate that green space network can be graphically and quantitatively explained by degree centrality, betweenness centrality and relative importance value of connectivity with the application of graph theory.

• Korean journal of communication and information
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• v.52
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• pp.154-176
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• 2010

Rooted in the work of Pierre Bourdieu, the cultural intermediaries have recently developed as a focus of attention for the Anglo-saxon sociology of culture and cultural studies. This paper tries to critically examine the debate around the definition and role of cultural intermediaries. It also explores the applicability of the notion ‘cultural intermediaries’ to a changing digital mediascape. In the first part of the paper, I clarify the critical problematics inherent in the Bourdieusian conception which focuses on the function of cultural intermediaries for the ‘production of the belief’ in cultural goods. Consequently, I draw attention to the mediation and transformation process of ‘legitimate culture’ by critics in mass media as ‘new cultural intermediaries’. In the second part, I attempt to constitute a typology of cultural intermediaries, proposing the notion of ‘on-line cultural mediation’ and ‘on-line cultural intermediaries’. I also outline the characteristics of three different types (‘traditional’, ‘new' and 'on-line') of cultural intermediaries. I argue this new conception of cultural intermediaries can help to understand the complex power relations and their transmutation in various cultural fields under digital environment.

• The Journal of Society for e-Business Studies
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• v.20 no.1
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• pp.23-43
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• 2015

Information and communications technology facilitates collaboration among individuals by functioning as an open platform for open collaboration projects. In this regard, this study aims to understand the network characteristics of participants who contribute greatly to open collaboration by investigating the mutual cooperation network in an open source project, which represents a form of open collaboration based on social network theory. To achieve this objective, this study analyzes the network centrality of developers with a high number of commits, particularly 8,101 developers in 782 repositories in GitHub, a representative open source platform. This study also determines how the relationship between network centrality and number of commits depends on the size of a repository network and the presence of a hub. Consequently, the number of commits by developers with high degree, betweenness, and closeness centrality is increasing. Among which, betweenness centrality has the highest explanatory power. Furthermore, when a hub is present and as network size increases, the relationship between the betweenness centrality of a developer and his/her number of commits continues to grow. This study is expected to provide suggestions for the successful performance of open collaboration projects in the future.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.5
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• pp.230-239
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• 2020

The purpose of this study was to examine how a leader's organizational citizenship behavior (OCB) affects subordinates' interpersonal citizenship behavior (ICB) and job stress levels. A leader's OCB involves taking-charge behavior, loyal boosterism, and the industry. We hypothesized that leader-member exchange (LMX) would mediate the relationship between leader's OCB and subordinates' ICB and job stress level. We tested the model using a sample of 293 employees from different organizations from September 2019 until November 2019. We conducted confirmatory factor analyses of the variables and analyzed the data by using structural equation modeling. We also conducted a CFA to assess the fit of a three-factor model for the leader's OCB items. Empirical findings show that LMX fully mediated the effect of leader's OCB on employees' ICB and job stress level. Leader's OCB had a positive effect on LMX. Moreover, LMX had a positive effect on employees' ICB but had a negative effect on job stress. We found support for our hypotheses that leader's OCB is positively related to ICB but negatively related to job stress, and this relationship is mediated by LMX. We discuss limitations, implications for practice, and future research.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.18 no.1
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• pp.55-65
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• 2017

This study was conducted to investigate the mediating effects of coping on the impact of life stress on depression, subjective well-being and psychological well-being in nursing students. Self-report questionnaires were used to collect data from 147 nursing students. Data were analyzed using descriptive statistics, Pearson's correlation coefficient and hierarchical multiple regression. Nursing students who had a higher level of depression had a higher level of life stress, as well as a higher frequency of avoidance coping. Conversely, those who had a higher level of subjective well-being and psychological well-being had a lower level of life stress, as well as a lower frequency of avoidance coping. There were also significant positive correlations between psychological well-being and problem solving coping. The results showed that avoidance coping partially mediated the effects of life stress on depression, subjective well-being and psychological well-being. The results suggest that it is necessary to offer stress management programs to reduce avoidance coping, with additional consideration of life stress and coping strategies, to prevent depression and improve well-being among nursing students.