• Proceedings of the IEEK Conference
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• 2001.10a
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• pp.117-121
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• 2001

The present study has been conflicted to verify the applicability of tire powder and food waste compost as biofilter materials to degrade volatile organic compounds. Batch and column tests were performed to determine the optimum ratio of tire powder to compost and the appropriate mixing type of two materials for removal of the selected VOCs, i.e., benzene, ethylbenzene, PCE, and TCE. According to batch tests, tire powder and compost mixture had faster removal rate than the compost. The biofilter column filled with tire powder and compost showed better VOC removal efficiency than that filled with only tire powder. In this study, the best removal rate was observed in the sandwich type column test of which the tire : compost weight ratio was 1:2

• Proceedings of the KSRS Conference
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• 2003.11a
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• pp.732-734
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• 2003

In the middle -resolution remote sensing, the Ground Sampled Distance(GSD) sensed and sampled by the detector is generally larger than the size of objects(or materials) of interest, in which case several objects are embedded in a single pixel and cannot be detected spatially. This study is intended to solve this problem of a hyperspectral data with high spectral resolution. We examined the detection algorithm, Linear Spectral Mixing Model, and also made a test on the Hyperion data. To find class Endmembers, we applied two methods, Spectral Library and Geometric Model, and compared them with each other.

• Journal of Nutrition and Health
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• v.21 no.6
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• pp.392-409
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• 1988

A nutrition survey of elementary school children in urban areas was undertaken in December of 1986, to investigate nutritional status in relation to school lunch programs. A total of 284 children in the grades from the 4th to the 6th of Myongsudai elementary school, consisting of three groups ; 1) children taking school lunch every day, 2) children taking school lunch intermittently, 3) children not taking at all, were studied. The group of children taking school lunch every day showed higher values of dietary intake, anthropometric measurements and biochemical findings, compared to those of the other groups, in general. These data underscore the necessity of nation wide school lunch programs for whole school children of Korea.

• Journal of the Korean Society of Food Culture
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• v.14 no.3
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• pp.233-239
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• 1999

This study was to investigate the factors which influence foodservice dietitians' job satisfaction and dissatisfaction by the elementary school foodservice type using questionnaires. The results of the study are as followings : 1) Foodservice types of the subjects were urban 49(23.2%), country 141(66.8%) and island 21(10.0%). 79.6% of the urban type were operated by the conventional, independent management system, where 38.3% of the country and 52.4% of the island type were operated by conventional, joint management system. 2) Urban type dietitians showed significantly lower satisfaction on their salary & promotion(1.5) compare to country & island types(p<0.05). Island type dietitians showed significantly lower satisfaction on the student's health improving(2.4) compare to country &urban types(p<0.05). 3) Dietitians of urban type were dissatisfied more 'personnel management(3.2)' than dietitians of other two types. Dietitians of country type and island type were dissatisfied more 'extra work load(2.6)' than dietitians of urban type. 4) Work load was lots orderly island, country and urban types. Working attitudes were the most positive at dietitians of urban type and the most negative at dietitians of island type. 5) Job satisfaction and dissatisfaction of dietitians were correlated with number of meals, number of school transfer, cook license, additional job and school foodservice location type.

• Korean Journal of Health Education and Promotion
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• v.35 no.5
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• pp.1-16
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• 2018

Objectives: This study aimed to examine systems behavior of urban walking by analyzing a dynamic structure in Seoul, South Korea. Methods: As a systems thinking approach to urban walking and health promotion, we developed a Casual Loop Diagram based on literature review and expert consultation. The reviewed literature included: 1) qualitative studies that explores the experiences of urban walkers in Seoul; 2) a systematic review study on the built environmental factors related to walking; 3) policy research reports related to urban walking in Seoul. Results: The feedback structure for urban walking was related to the three urban environments (safety & walking environment, socioeconomic environment, and public transportation environment), and was characterized by a trade-off consisting of eight reinforcing loops and four balancing loops. Conclusions: The policies for a walkable city require multi-sectoral cooperation in order to change the causal loop structure related to the decline of walking. Therefore, it is necessary to establish legal and institutional conditions so that multi-sectoral and multidisciplinary approaches are possible.

• Proceedings of the Korea Water Resources Association Conference
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• 2005.09a
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• pp.520-521
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• 2005

• Proceedings of the Korea Water Resources Association Conference
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• 2005.09b
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• pp.1184-1184
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• 2005

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2010.04a
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• pp.189-191
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• 2010

• Proceedings of the Korea Society of Environmental Toocicology Conference
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• 2004.11a
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• pp.38-39
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• 2004

• Proceedings of the Korean Institute of Landscape Architecture Conference
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• 2021.10a
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• pp.20-22
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• 2021