• 대한가정학회지
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• 제32권3호
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• pp.185-196
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• 1994

The prevalence of obesity by measuring the amount of body fat and its related factors were investigated in 315 high school girls living in Seoul. Average body fat amount and body fat percentage measured by the body impedance analysis were 14.2$\pm$5.2kg and 25.9$\pm$7.0% respectively. Mean body mass index(BMI) was 2.1$\pm$2.7kg/m2 and 6.7% of the subjects showed over 25kg/m2 Correlative analysis reveal that the body fat percentage was significantly correlated to both relative body weight and BMI(r=0.66, P<0.01, r=0.68, P<0.01) Relative body weight of the subjects showed positive correlation to those of their mother and father. It was shown that many students skipped breakfast often and did not have a pleasant meal with enough time. There was no relationship between adiposity and dietary nutrient or energy intake. When subgroups of the subjects attending a non-vocational high school and those attending a vocational or technical school were compared obesity was more prevalent in the former. Therefore the burden caused by preparing the university entrance examination seems to play an important role in fat deposition.

• 대한기계학회:학술대회논문집
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• 대한기계학회 2008년도 추계학술대회B
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• pp.2454-2459
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• 2008

The objective of this paper is to find out the most effective injection angle for the purpose of deicing through SC/Tetra, a commonly used CFD software. Nowadays, vehicles are developed giving priority to an improved interior which emphasizes a pleasant environment and thermal comfort without decreasing the basic performance. Clear visibility is one of the most important phenomenon. The primary factors which affect the efficiency of deicing are 3D geometry of Defrost Nozzle, the inlet velocity and temperature of the flow and the injection angle. However in this paper, all these parameters are optimized by changing the injection angle. A wide range of injection angle from 5 degree to 50 degree have been considered for analysis. A very good defrosting performance has been achieved with 45 degree injection angle which can satisfy the condition of NHTSA.

• IEIE Transactions on Smart Processing and Computing
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• 제2권3호
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• pp.130-139
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• 2013

This paper proposes a new approach for enhancing digital images based on red channel information, which has the most analogous characteristics to invisible infrared rays. Specifically, a red channel in RGB space is used to analyze the image contents and improve the visual quality of the input images but it can cause unexpected problems, such as the over-enhancement of reddish input images. To resolve this problem, inter-channel correlations between the color channels were derived, and the weighting parameters for visually pleasant image fusion were estimated. Applying the parameters resulted in significant brightness as well as improvement in the dark and bright regions. Furthermore, simple contrast and color corrections were used to maintain the original contrast level and color tone. The main advantages of the proposed algorithm are 1) it can improve a given image considerably with a simple inter-channel correlation, 2) it can obtain a similar effect of using an extra infrared image, and 3) it is faster than other algorithms compared without artifacts including halo effects. The experimental results showed that the proposed approach could produce better natural images than the existing enhancement algorithms. Therefore, the proposed scheme can be a useful tool for improving the image quality in consumer imaging devices, such as compact cameras.

• 한국환경교육학회지:환경교육
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• 제17권2호
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• pp.38-49
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• 2004

In recent years there has been a growing recognition that presenting principally environmental issues in environmental textbooks is a form of local, national, regional, and global issues. The environmental textbook in the 7th environmental curriculum is to be composed of contents that could encourage the inquiry of value and change of attitude to take part in environmental preservation on the foundation of the comprehension about ecosystem. Therefore, the present study analyzed the difference of the contents of the environmental issues between the 7th national curriculum and textbooks in the middle school environmental education. The analytical results of this study are as follows: Firstly, there are total 4 sections related to environmental issues in environmental curriculum of middle schools. The content areas that are included ‘Environmental Preservation and Development’, ‘Getting the Hot Earth’, ‘Decreasing Forest and Increasing Desert’, and ‘Pleasant Surrounding and Quality of Life’. Secondly, an environmental textbooks that are used in school education edited for direction that coincide in motive that is ‘real life-centered education’ that is presenting in the 7th environmental curriculum. Specially, introduction to local environmental issues coincides the intent of the curriculum revisions that are ‘environmental education within everyday life’ and ‘contents of local-centered environmental education’. These findings have implications for teaching about environmental issue in school environmental education.

• 인간식물환경학회지
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• 제22권2호
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• pp.199-207
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• 2019

The purpose of this study was to investigate the mood states and concentration of students when they see the natural scenery indoors throughout the Free Semester Program (FSP) of middle school. The subjects were total 180 students comprised of 60 students in the group viewing natural scenery, 60 students in the group viewing urban scenery and 60 students in the control group from the first year of middle school located in Daejeon, and the experiment was carried out from September 3 to October 30, in 2018. The results showed that tension, depression, anger, fatigue and confusion were decreased and vigor was increased significantly in group viewing natural scenery compared to group viewing urban scenery and the control group. Ratings of 'pleasant,' 'natural,' and 'calm' were increased and concentration was also improved significantly in the group viewing natural scenery compared to the group viewing urban scenery and the control group. This indicates that positive effects can be anticipated on the improvement of mood states and concentration by developing indoor program viewing natural scenery for people who have difficulties in outdoor activities.

• 한국응급구조학회지
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• 제25권2호
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• pp.129-143
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• 2021

Purpose: This study aimed to identify the current status of school safety education and the differences in knowledge and practice of middle school students. Methods: A structured questionnaire was distributed to 418 middle school students in J province. The questionnaires consisted of 35 questions on the status of school safety education as well as the four school safety education domains of first aid, disaster safety, traffic safety, and daily life. Data were analyzed using frequency analysis, cross-tabulation analysis, a t-test, analysis of variance, and Pearson's correlations. Results: Awareness regarding the top seven standards for school safety and interest in school safety education were both relatively low. Among all the different kinds of safety accidents, those related to school violence(33.8%) and life safety(24.9%) were experienced the most in school. A more pleasant school life and better peer relationships led to interest in school safety(p=.000)(p=.000), awareness regarding the top seven standards for school safety(p=.022)(p=.009), adoption of coping measures(p=.000)(p=.000), and practice(p=.000)(p=.000) in case of safety accidents(p=.000)(p=.000). Conclusion: To increase awareness regarding the seven standards for school safety education and raise interest in safety education, it is necessary to cultivate experts and actively utilize them and to prepare systematic and continuous school safety education programs.

• 한국학교보건학회지
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• 제35권3호
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• pp.143-151
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• 2022

Purpose: The purpose of this study was to examine the effects of being aware of the physical and psychosocial environment of the school on subjective feeling of happiness in Korean middle and high school students. Methods: The data of "Health and lifestyle Survey (2019)" conducted by the National Youth Policy Institute were analyzed after receiving approval though the website. A total of 5,311 middle and high school students were included in the analysis. Descriptive statistics, t-test, one-way ANOVA, pearson correlation, and multiple regression analysis were executed using SAS 9.4. Results: The mean score of subjective feeling of happiness was 6.92±0.56 out of 10. From the univariate analysis, the more positive the perception of the physical school environment was, such as classrooms, restrooms, exercise facilities, catering facilities, health facilities, other school facilities and school uniform, the higher the subjective feeling of happiness was (p for all <.001). In addition, the psychosocial environment of the school was significantly related to the happiness of adolescents (p<.001). After controlling for gender, school level, school grade, socio-economic status, and stress, positive perception of classrooms (B=0.04, p<.001), catering facilities (B=0.01, p=.021), health facilities (B=0.08, p<.001), and the psychosocial environment of the school (B=0.18, p<.001) was significantly associated with happiness of the students. Conclusion: Positive perception of the school environment was found to increase happiness in adolescents. Therefore, efforts should be made to make classrooms, catering facilities, and health facilities a pleasant space as well as to create a school atmosphere that values health.

• 한국치위생학회지
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• 제12권4호
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• pp.665-674
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• 2012

Objectives : This study purposed to identify factors related to dental service quality perceived by dental clinic patients, and for this purpose. Methods : The data conducted a questionnaire survey of 362 patients who had visited a dental clinic in Daejeon twice or more in August 2010 and aged over 20 during the period from the 1st to 31st of August 2010 and obtained results as follows. Results : The patients' general characteristics, perceived dental service quality was higher in older ones, married ones, high school or lower school graduates, civil servants, self-employed ones, and housewives, and the differences were statistically significant. according to the patients' dental clinic use characteristics, perceived dental service quality was higher when the stay in dental clinic was short, and the difference was statistically significant. Conclusions : Perceived dental service quality was related to the patients' general characteristics and dental clinic use characteristics. therefore, dentists and dental hygienists should make efforts to be more patient-oriented and to create pleasant dental care environment.

• 한국실내디자인학회논문집
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• 제19권3호
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• pp.214-223
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• 2010

Information & Communication Technology(ICT), called ubiquitous computing, changes our environment in many ways. It also acts on educational environment in concert with new pedagogy. Korean Government gives an efforts to set up the u-School as the educational environment supported by ICT. This study aims to find efficient uses of ICT to cope with the changing education environment and emerging needs of users. The survey research follows the pilot study on the model of future school. The students and teachers in six schools located in Busan answered the questionnaire and 752 individuals were analyzed by the statistical method including frequencies, crosstabs, ANOVA, and factor analysis. The conclusions are as follows: (1) Highly demanded were the u-School facilities to provide pleasant environment as the teachers and students have to spend most of time in classroom, or school premises. In addition, the infrastructures were so desperately required that students are able to control their textbooks and belongings, and efficiently utilize a variety of data. (2) The classroom volume should be planned a bit smaller than the current number of students so that teachers are relieved from the burden of too many student. The needs of students to interact with more students can be bolstered by utilization of ICT. (3) The respondents feel the high needs of computer for student, electronic blackboard, electronic lecture desk, microphone and computer for teacher as the teaching and learning facilities. This showed high needs for teaching and learning facilities enabling the active and individual learning through the use of ICT at education environment. In conclusion, the study proposes the fundamental data to combine u-School elements proper to the current learning and school environment, from the analysis on the use of school facilities, with the subjects, the users of education environment.

• 대한설비공학회:학술대회논문집
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• 대한설비공학회 2008년도 하계학술발표대회 논문집
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• pp.873-876
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• 2008

The purpose of this study was to investigate Green Roof System's thermal performance using dynamic heat load simulation programs related to architectural environment. In results, it is found out that the thermal performance of Green Roof System is stabler than that of roof slab system which means that it is possible to create pleasant indoor environment and save the heating and cooling load.