• The Journal of Korean Academy of Prosthodontics
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• v.56 no.4
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• pp.391-395
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• 2018

Increasing demands for zirconia material in clinics, assessment of biocompatibility of zirconia is essential. In this article, a review of in vitro studies of zirconia compatibility was performed. Zirconia showed great biocompatibility at in vitro studies with various cell lines such as fibroblasts, osteoblasts, and lymphocytes. Many studies reported that zirconia caused no cytotoxicity or mutation. Zirconia also showed less bacterial adhesion. There were no adverse effects except for small reduced strength with in vitro study mimicking long-term exposure of body fluid. According to the study with ostoblast-like cells, zirconia could regulate genes of immunity, molecular transport, and cell cycle. Such gene regulating was considered as one of the reasons of zirconia biocompatibility. With biocompatibility of zirconia powders, in vitro studies had controversial conclusions. It seems that zirconia powders might have cytotoxicity.

• Journal of the Korean Society of Environmental Restoration Technology
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• v.18 no.5
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• pp.13-26
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• 2015

Urban park and green space provide various functions. Among the functions, human benefit and increase of biodiversity are known to be important. Therefore, it is important to consider human and biotic aspect in the process of selecting suitable site for park and green space. However, there is insufficient research on both aspects. In this study, we used green network to analyze human and biotic aspect to select suitable site for park and green space in Seongnam City in Korea. To analyze the green network, we used accessibility for human aspect and used dispersal distance and habitat size for biotic aspect. We conducted least-cost path modelling using movement cost. In case of biotic aspect, GFS (generic focal species) is used to estimate habitat size and dispersal distance. To find out suitable site for park and green space, we used an overlay analysis method. As the result, old residential areas are shown have insufficient green network which needs park and green space. Furthermore, the green network for biotic aspect is insufficient in old residential areas comapred to green network for human aspect. The result of this study could contribute in planning of park and green space to maximize their functions.

• Journal of Korean Society of Rural Planning
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• v.21 no.4
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• pp.27-33
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• 2015

Forest ecosystem is considered as an important stepping stone to minimize the impact of climate change. However, the rapid urbanization has caused fragmentation of forest ecosystem. The fragmentation of forest patch results in edge effect which brings about adverse impacts on forest function and structure. Degradation of forest ecosystem decreases carbon sequestration because edge effect reduces productivity. Therefore, we analyzed the impact of forest edge effect on forest ecosystem carbon stock change in Seongnam-si, Gyeonggi-do. We used connectivity analysis to determine forest edge and core area. The field study sites were selected with considering forest age, density, class and soil type. Secondly, forest carbon stock was calculated with allometric equation. The soil carbon stock was derived from Walkely-Black method. Lastly, Mann-Whitney test was conducted to validate differences between carbon stock in edge and core area. As a result of study, the connectivity analysis was effective to determine forest edge and core. The core and edge of forest patch showed different composition of tree species and soil properties. Carbon stock per tree in the edge area was lower than that in the core area. However, the difference of soil organic carbon content between the edge and core were relatively small. This assessment can be applied for the conservation of forest patch as well as quantitative assessment on the forest carbon stock change caused by fragmentation.

• Journal of Conservation Science
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• v.29 no.3
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• pp.231-241
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• 2013

Analysis of the bronze bodhisattva from Pangyo-dong sites in Seongnam by computed tomography, ICP-AES, metallurgical microscope and SEM-EDS had to know manufacturing technique. And the origin of the raw material, was investigated using TIMS. Results with computed tomography, two bronze bodhisattva produced by lost-wax casting technique with hollow inside and could see the core of the inside. Result of component analysis and microstructure observation, material is alloy of copper-tin-lead and made by casting without artificial treatment. According to lead isotope ratio analysis result of bronze bodhisattva could be made into galena of the Gyeonggi massif in Korea South.

• Hwankyungkyoyuk
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• v.11 no.2
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• pp.224-237
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• 1998

The purpose of this study that was based on the theory review about the practical use necessity of school landscape was to survey on the awareness of elementary school teachers about the applications of school landscape for environmental education. This study was carried out through the review of literature, the questionnaire to 132 elementary school teachers in Seongnam City. The findings derived from this study were as follows : First, School landscape is an important field as environmental education resource for the improvement of school environmental education. Especially, for the improvement of environmental sensitivity through field-experience learning, the practical applications of elementary school landscape is very important and urgent in aspects of environmental education theory, accessibility, and convenience. Second, Most of responded teachers give an affirmative answer about the field-experience learning for school environmental education and the necessity of practical use of school landscape for field-experience learning. Several the improvement to use elementary school landscape for environmental education being suggested by teachers are the increase of financial support, the magnification of school area, and the school landscape planning and design in consideration of environmental education by landscape architect expert. Third, Above half of teachers don't agree to use the roof garden for environmental education because of the safety of students and the school building construction. Fourth, Teachers are more satisfied with the status of school landscape maintenance than the practical usability of school landscape in aspect of environmental education and the facilities in school landscape. Teachers think that the most important functions and roles of school landscape is psychological factor.

• Journal of Digital Convergence
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• v.14 no.11
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• pp.125-133
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• 2016

In recent years, various crimes such as "random killing' crime continue to rise. Despite the government's crime prevention efforts and crime related researches, crime increases and a different approach is needed. Therefore, this study proposes the alternative for crime prevention by analyzing big data. To achieve this objective, this study was to perform visualization utilizing the histogram, the bubble chart and the hit map and association analysis. To analyze the relationship between crime and some variables, this study analyzed data of Seongnam city, Korea National Police Agency and etc. The results of analysis showed that CCTV will be to reduce the crime rate and security light is not significantly relevant. And the result showed that other types of crime focused by time of the day and day of the week and showed that an increase of the foreigners and crime increase are associated. This study presents a scheme for reducing the crime rate on the basis of this analysis result.

• Journal of dental hygiene science
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• v.4 no.1
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• pp.27-32
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• 2004

This study intended to identify how our children are aware of dental health and motivate them to learn reasonable knowledge about dental health. Furthermore, it also aimed to induce them to change their awareness and behavioral style about dental health, so that they may keep good habits for dental health for their lifetime. Total 1,044 samples were collected from children who were all 12 years old and lived in Seongnam city. During six months (June to December 2002), they were asked to participate in questionnaire survey about consumer behavior, knowledge, attitude, activity and self-diagnosis for dental health. The results of questionnaire survey can be outlined as follows: (1) The results of investigating consumer behavior for dental health showed that 34.5% of total respondents ever visited dental clinics once or more within latest one year, 21.4% ever visited dental clinics for the sake of prevention, 70.6% were instructed in dental health program, 31.7% were treated with the fluorination, 36.9% were treated with dental sealant, and 17.1% were treated with scaling, respectively. (2) For 10 items asking reasonable knowledge about dental health, respondents answered to 5.06 items on average. (3) For 10 items asking reasonable attitude for dental health, respondents answered to 5.41 items on average. (4) For 10 items asking reasonable behavior, respondents answered to 4.53 items. (5) For 10 items asking reasonable self-diagnosis for dental health, respondents answered to 5.65 items.

• The Korean Journal of Food And Nutrition
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• v.21 no.2
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• pp.218-226
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• 2008

This study examined the preference and consumption of chungkukjang among elementary school children in Seongnam, Korea. The subjects included 583 students(male 300, female 283) who were asked to fill out a questionnaire. The collected data were analyzed using the SAS package. The results showed that 91.9% of the female students, 91.6% of children from nuclear families, and 90.7% of children with stay-at-home mothers, consumed chungkukjang. Among the children who had eaten chungkukjang previously, most had consumed it at home, and 65.5% of the students responded that chungkukjang was tasty. The data also revealed that female students, children from nuclear families, and those with stay-at-home mothers had greater preference for chungkukjang than male students, children from extended families, and those with working mothers. When asked why they dislike chungkukjang, both male and female students who had eaten it responded because 'it smells bad' and that 'it is not tasty'. However, among the students who had never eaten it, the male students replied because 'it is not tasty'(33.3%) and that 'it is not eaten at home'(27.8%), and the primary responses of the female students were 'it is not eaten at home'(65.2%) and 'it is not tasty'(21.7%). However, the subjects who had tried chungkukjang previously answered that in the future they would like to have it more frequently, as compared to the subjects who had never eaten chungkukjang. Therefore, to increase knowledge and improve perceptions of chungkukjang foods, families should give children many opportunities to try them, and in return, children will consume chungkukjang foods with pride. Furthermore, it is important that society as well as mass media, which have great influence on children, show concern and offer support in promoting chungkukjang.

• The Journal of Pediatrics of Korean Medicine
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• v.32 no.1
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• pp.75-82
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• 2018

Objectives It is important to maintain health for students. The School Health Law is enacted in Korea to carry out the school health project like Korean Medicine Doctor's student Health and Wellness program. The purpose of this study was to examine the student's satisfaction of the program. Methods The school project was conducted in 19 schools in Seongnam city from May 2016 to December 2016. This school program was consisted of health counseling, necessary treatment, health related lectures, and vocational education about Korean medicine. A satisfaction questionnaire was conducted to gather information about overall satisfaction of the program and the program details such as health counseling, treatment, and health lectures. Results A total of 1,713 students and faculty members participated and 164 of those students completed the satisfaction survey. The overall mean score for the teaching activities was $8.54{\pm}1.76$, satisfaction of health counseling was $8.57{\pm}1.74$, treatment satisfaction was $8.39{\pm}1.83$, satisfaction with the health lectures was $8.23{\pm}1.96$ (range 3~10), and the need for continuity of the program was $8.43{\pm}1.91$ (range 1~10). One of the main benefit from the program was that students were able to get necessary treatment as soon as possible (51.2%). Conclusions We found that Korean medicine is suitable for the program. However, the large-scale prospective study will be needed for validation of the findings.

• Journal of Korea Technology Innovation Society
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• v.20 no.4
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• pp.915-938
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• 2017

This study examines the case of living lab led by intermediary and explores the development possibility as living lab platform. The analyzed cases are 'The Seoul Innovation Park Living lab', 'Korea Senior Living lab' of Seongnam Senior Experience complex, and 'Disaster Safety Living lab'. As a result of the analysis, all three cases have formed a user panel to form a living lab platform, and provide living lab service to internal and external organizations. A common feature that combines a technology platform with a 4Ps-based governance platform is identified. However, the characteristics, the meaning, and the process are different from case to case. In the future, the living lab platform needs to share learning experiences that are going on individually, since domestic living lab platform is in the early stage. Through this, it is necessary to seek collaboration and cooperation with related similar projects, and to jointly promote institutional and physical infrastructures related to living labs.