• Journal of Korean Society of Water and Wastewater
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• v.14 no.3
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• pp.281-290
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• 2000

This study investigates the prediction of daily water supply, which is a necessary for the efficient management of water distribution system. ANFIS, namely artificial intelligence, is a neural network into which fuzzy information is inputted and then processed. In this study, daily water supply was predicted through an application of network-based fuzzy inference system(ANFIS) for daily water supply prediction. This study was investigated methods for predicting water supply based on data about the amount of water which supplied in Kwangju city. For variables choice, four analyses of input data were conducted: correlation analysis, autocorrelation analysis, partial autocorrelation analysis, and cross-correlation analysis. Input variables were (a) the amount of water supply, (b) the mean temperature, and (c) the population of the area supplied with water. Variables were combined in an integrated model. Data of the amount of daily water supply only was modelled and its validity was verified in the case that the meteorological office of weather forecast is not always reliable. Proposed models include accidental cases such as a suspension of water supply. The maximum error rate between the estimation of the model and the actual measurement was 18.46% and the average error was lower than 2.36%. The model is expected to be a real-time estimation of the operational control of water works and water/drain pipes.

• Journal of the Korean Institute of Educational Facilities
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• v.3 no.2
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• pp.25-35
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• 1996

This study is to find countermeasures of facility space according to the development of new educational program and the opening of education market from the renewal of existing facilities. The renewal is consider as the worldwide trend for enhancing added value of the facilities in economic side of educational facilities as well as educational contents. This study selects six from 94 elementary schools in Kwangju-city to examine our educational conditions, understand using conditions and recognition of existing space and possibility of the recycle. The hypothesis that recognition of existing facility space in school may be varied according to physical conditions of children is made in four sides, six elements and two trends are extracted and then life pattern, size, sense of materials and cognition of three types of passage space are analyzed. Accordingly, this study obtains such results that passage space is life space having strong place concept and there is the possibility of renewal of existing school building facilities corresponding to multipurpose of school facilities.

• Journal of Korean Ophthalmic Optics Society
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• v.9 no.2
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• pp.447-453
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• 2004

The prevalence of Toxocara canis eggs in the public places in the city of Gwangju were studied through examination of 800 soil and 123 fecal specimens. Toxocara canis eggs were found in 15% of soil samples. In 25% parks and 17% residential quarters, these eggs were detected with higher contamination rate than other places. The soil contamination rate of playgrounds in spring and autumn was higher than that of summer and winter, and the variation range of the rate was high in parks and residential quarters. The contamination rate of eggs in 123 samples of dogs' feces was 31%, it was higher than that of soil samples(21%).

• Proceedings of the Korean Institute of Interior Design Conference
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• 2004.05a
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• pp.49-55
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• 2004

The purpose of this study was to explore typical behaviors of spatial usages such as patterns of spatial usages, perception on residential spaces, and furniture arrangement. A questionnaire survey and interview were adopted in this study, and 146 residents living in apartment with 3 bedrooms, stairway access, and 3-bay style in the City of Gwangju. The major findings of this study were that 1) dining-kitchen (DK) was conceived and used as a space not only for dining but also family gathering and guest reception. Dining table without refrigerator was frequently found in furniture arrangement of DK, and refrigerator has been relocated in utility room facing DK. The results imply the need for social interaction that has been growing. Anbang (master bedroom) has been perceived and used as couples' private area, aside from the traditional function of family interaction. A coordination of both bed and wardrobe out of different furniture arrangements was popular in anbang. Living room was used as a multi-purpose room carrying out various activities such as family gathering, guest reception, and housekeeping. Sofa and cabinet were the most common furniture arrangement in living room. The research results are a basis for residential open housing system.

• The Journal of the Acoustical Society of Korea
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• v.12 no.3
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• pp.43-48
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• 1993

This study was carried out to verificate the possibility of using the laboratory setting psycho-acoustic experiment compared with the field and to delineate the appropriate indices in evaluating the Noisiness of road traffic noise by means of psycho-acoustic method. Reviewing the typical patterns of traffic noises depending upon the shapes ad conditions of the road, the road traffic noises in several representative points in the major residential areas in Kwangju city were recorded and reproduced with the noise levels modified in various steps. With these 20 sound sources, psycho-acoustic experiments in the laboratory were performed on 11 volunteer subjects. And then, psycho-acoustic experiments in the real field were performed on 10 volunteer subjects to compare the results of the laboratory experiment, the results are summerized as follows : 1. The psycho-acoustic experiments in the laboratory elicited the data well matching with those obtained in the field, resulting in even higher corelation levels. This indicates that the field assessement of responses to the noise can be replaced by the evaluatioin in the laboratory settings which render many variables easily controlled and that the responses of the residents to the noise can be easily predicted in the laboratory by applying this method. 2. Also among the complex indices, such as Noise Pollution Level or Annoyance Index high correlations were detected. On the other hand, low corelations were noted among Traffic Noise Index. 3. Highly significant correlations were found among the direct indices such as Leq, L\sub 10\, On the other hand, low correlations were detected among L\sub 50\.

• Korean Journal of Adult Nursing
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• v.18 no.2
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• pp.231-239
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• 2006

Purpose: The purpose of this study was to identify the effect of web-based learning for ventilator practice on the knowledge and clinical competence of nursing students. Method: The research design was a non-equivalent control group pre-post non-synchronized design. Twenty five nursing students were collected for the experimental group from August 23 to November 26, 2004 and nineteen nursing students for the control group from August 22 to November 25, 2005. All subjects experienced clinical practices in an intensive care unit of a hospital in G city for 2 weeks. The web-based learning for ventilator practice was conducted in the experimental group only. The data were analyzed with t-test and ANCOVA using SPSS 10.1 program. Result: The 2 week web-based clinical practice learning significantly improved the knowledge scores for the experimental group, however, there was no significant differences in the score for the clinical competence between experimental and control group. Conclusion: These findings suggest that a self-directed web-based learning for ventilator practice of nursing students can facilitate the knowledge of care for a ventilated patient. Therefore, faculties should develop a variety of web-based multimedia content programs for clinical instruction based on clinical situation.

• Environmental Sciences Bulletin of The Korean Environmental Sciences Society
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• v.4 no.1
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• pp.1-9
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• 2000

This paper describes an analysis of various factors affecting traffic noise propagation, including the distance from the road, existence of a direct path of noise propagation, density and height of buildings, and procedure for predicting the attenuation of noise levels from roads. The analysis is based on a multiple number of regression models, utilizing the quantification theory of the first kind. This study incorporates a large amount of survey data concerning traffic noise propagation. The survey of the traffic noise propagation around main roads was carried out in several residential areas, mainly in Kwangju. The attenuation of noise levels measured provided 691 usable data samples. A multiple regression analysis demonstrated that the distance from the road makes the most significant contribution to the attenuation of the noise level. The second contributor was found to be the existence of a direct path of noise propagation. The building density and average height of the buildings also affected the attenuation of the noise level considerably. Other factors, such as the height of the building behind the receiver microphone and the number of traffic lanes on the noise-source roads, did not contribute as much to the attenuation of the noise level as the factors mentioned avove.

• Research in Community and Public Health Nursing
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• v.23 no.1
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• pp.63-70
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• 2012

Purpose: The purpose of this study was to identify factors influencing 6th graders' alcohol drinking. Methods: Data were collected by questionnaires from 524 6th-graders in G City. The data were analyzed using SAS 9.1.3 programme. Results: Of the children, 63.7% had no education about drinking, implying that drinking prevention education is not done properly in elementary schools. In addition, 70.6% of the children experienced drinking. Among those who had drinking experience, 24.9% experienced the first drinking before entrance into elementary school and this was the highest percentage. Logistic regression analysis showed that the predictors are religion, family type, mother's drinking frequency, and alcohol attitude. Conclusion: The results of this study suggest that complementing home environment and parenting education would be effective for reducing children's drinking. Also, it is recommended that drinking prevention programs for children should be developed in consideration of various factors affecting children's drinking including the factors identified in the present study, and the effectiveness of those programs should be assessed.

• Journal of the Korean Institute of Educational Facilities
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• v.9 no.2
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• pp.15-24
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• 2002

This study is performed to understand a trend of preference about classroom for special purposes related with elementary school relocation. It is anayzed based on the questionnaire of teachers at work in the two schools having similar educational environment. The results showed that it is desirable to locate rooms for science or practice in low story and music room in the lowermost or uppermost story. Rooms for art, linguistic education and computer had not limited any place. It is shown that the scale of each preparation room is significantly different with each grade and more large scale is needed in higher grade. These results reflect that the present arrangement of classrooms for special purposes is not adequate and require more reasonable arrangement with the grade in the architectural plans for relocation-needed elementary schools.

• Korean Journal of Health Education and Promotion
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• v.27 no.1
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• pp.35-48
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• 2010

Objectives: This study was to identify the food habits, dietary attitudes and exercise habits of senior elementary students and provide basic data for the development an obesity management program for these children. Methods: The survey participants were 626 fourth to sixth grade elementary students in G city. Data were analyzed by descriptive statistics, $\chi^2$-test, t-test, ANOVA and multiple logistic regression. Results: The prevalence of obesity was 9.1%. The score of food habits and dietary attitudes at normal-weight group was higher than that of obese group. The food habits of obese group were significantly different according to gender and consideration eating between meals too often as bad habits. The dietary attitudes were significantly different according to interest in obesity control and consideration eating fast and fat food preference as bad habits in obese group. The factors such as grade, intension in weight control and consideration eating fast, overeating, fat food preference and predilection for some food as bad habits were related to obesity. Conclusion: Food habits and dietary attitudes have relation with obesity of senior elementary students. Thus, to develop of obesity management program for senior elementary students, we considered the food habits and dietary attitudes of them.