• Journal of Korean Society for Geospatial Information Science
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• v.20 no.2
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• pp.101-107
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• 2012

With the foot-and-mouth disease problems emerging as a serious social issue, this study set out to analyze the problems with the current setting of preventive zones against epidemics and find ways to minimize damage through preventive measures. For those purposes, the study analyzed the outbreaks of the foot-and-mouth disease and assumed that the disease would be transmitted via vehicles along the roads based on the network map of national roads and boundaries among administrative districts to conduct network analysis. The analysis results were then used to estimate spread time, whose results were then categorized according to lineal road distance and actual road distance. Then lineal moving speed and actual moving speed on the road were obtained according to the national roads and administrative districts to analyze the problems with the current method of setting preventive zones against the foot-and-mouth disease. As for spread speed around the areas where the foot-and-mouth disease broke out, the average lineal spread speed was 53.9km/day, and the average spread speed on the road was 71.1km/day, which indicates there are problems with the current method of setting preventive zones against epidemics.

• Journal of the Korean Society of Propulsion Engineers
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• v.14 no.5
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• pp.24-31
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• 2010

Combustion-stability rating of impinging-jet injector is conducted numerically using hot-fire simulation in a subscale chamber with the five-element injector head. A sample F(fuel)-O(dxidizer)-O-F impinging-jet injector is adopted. In this work, instantaneous chemical reaction is adopted for hot-fire simulation based on the assumption that mixing process of fuel and oxidizer streams is controlling. The model chamber was designed based on the methodologies proposed in the previous work regarding geometrical dimensions and operating conditions. The present stability boundaries are in a good agreement with air-injection and hot-fire experimental data. The proposed numerical method can be applied cost-effectively to stability rating of jet injectors when mixing of fuel and oxidizer jets is the dominant process in instability triggering.

• Journal of the Korean Society of Hazard Mitigation
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• v.1 no.1 s.1
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• pp.157-163
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• 2001

The objective of the present study is to predict the characteristics of the fire and smoke propagations in a clean room. Numerical calculations have been performed by using the finite volume method to obtain temperature and velocity distributions in the clean room. In odor to account for the turbulent flow characteristics, the standard $k-{\varepsilon}$ model is used. From this study, it was found that the fire propagation could be fully developed only after 150 seconds when the ventilation system in the clean room was off. And the smoke mass fraction showed a similar distribution as the gas temperature. Since the simulated fire was proceeded up to $20{\sim}30%$ of the room within 60 seconds. it could be recommended that the occupants should be evacuated from the room within 30 seconds.

• Journal of Korean Home Economics Education Association
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• v.20 no.1
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• pp.45-62
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• 2008

The purpose of this study was to investigate middle school home economics(HE) teachers' perception and needs on self supervision related to HE subject matter, Using the methods of survey and interview, 177 samples were collected. For collected surveys, mean value, standard deviation, frequency, percentage analysis were performed by using an SPSS/Win (ver10.1) program. The results of this study were as follows. First, the middle school HE teachers recognized that self supervision related to HE subject matter was absolutely needed to expand the improvement of techniques for teaching instructions and the width of knowledge on the studies on textbook. Second, the middle school HE teachers recognized the necessary parts of self supervision related to HE subject matter as HE teaching-learning methods, the studies on textbook contents, and HE education philosophy in order. Third, the middle school HE teachers recognized that it would be helpful in improving their HE class and expertise in order of field survey, participation in various training programs, utilization of mass media, participation in societies for researches and meetings and information sharing with co-teachers among the types of self supervision. Fourth, the middle school HE teachers needed the reduction in miscellaneous duties, less pressure for time, restoration of teachers' desire, support of physical resources (improvement of various environments such as classrooms and special rooms), economic support and various support programs (expanding the opportunities to participate in training and society and establishment of a database for relevant materials, etc.) to facilitate self supervision. As such, the middle school HE teachers' overall recognition on HE-related self supervision became significantly higher. To enhance the HE-related expertise, however, it would be necessary to conduct concrete and active support for HE education, philosophical area and the studies on textbook contents as well as the teaching-learning methods for HE in which teachers' demand was high. In addition, the HE teachers wanted to have an easy and quick access to various HE-related data; therefore, it would be urgent to summarize scattered relevant data and support the HE teachers more systematically.

• 대한공업교육학회지
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• v.41 no.2
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• pp.134-150
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• 2016

This study has analyzed the subjects of transportation technology problem solving activities at Energy and Transportation Technology unit in the 12 kinds of middle school Technology Home Economics textbooks of the 2009 national revised curriculum. An analysis frame was developed with systems and environmental mediums which are common elements of transportation and the subjects were analyzed. As a result of this study, first, 8 kinds of subjects among 20 subjects in analysis frame were suggested in the textbooks. Second, according to the environmental, there are 13 terrestrial activities, 2 atmospheric activities, and 1 marine activity in the textbooks. However, there is no space related activity. Third, according to the system, there are 13 activities for the structure, 12 activities for the propulsion and suspension system, 5 activities related to the control system, and 1 activity regarding guidance system. Fourth, there are 4 kinds of problem solving activities depending on categorizing result of the analysis of the activities.

• Korean Journal of Food Science and Technology
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• v.32 no.2
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• pp.341-348
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• 2000

Effects of different types of sub-freezing methods on quality of raw pork loin, beef loin and tuna were studied. Storage tests were undertaken as follows; the three different types of sub-freezing methods, such as regular cold chamber at $-1^{\circ}C$, air-blast sub-freezing at $-5^{\circ}C$ and sharp-plate sub-freezing at $-5^{\circ}C$, were evaluated for extending freshness of samples. Pork loin packed with polyethylene-film showed no significant differences (P<0.05) in physico-chemical properties among the above sub-freezing methods. Air-blast sub-freezing methods revealed faster evaporation of moisture from samples. The same sub-freezing method also showed increased VBN values of pork loin and tuna samples. Regular cold chamber resulted in increased TBA values and K values of beef loin and tuna, respectively. It appeared that sharp-plate freezing system kept the food samples with the least loss of freshness among the above three sub-freezing methods. These results indicated that freshness of raw pork, beef and tuna could be significantly extended by the sharp-plate sub-freezing method.

• Journal of Korean Home Economics Education Association
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• v.12 no.2
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• pp.95-106
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• 2000

The purpose of this study was to analyse the relationship between the sex role types and the interests toward contents in practical arts of elementary school students. The questionnaire was composed of questions about the types of sex role and interests toward contents in practical arts. contents in practical arts subject were hoe economics agriculture technology computer. The respondents were 123 sixth grade boys and 122 girls from elementary schools in Seoul and Taegu. 245 questionnaires were used for data analysis. Frequency. percent x(sup)2-test. average, standard deviation, F-test. and Duncan’s multiple range test were followed. The results of this study were as follows: 1. Generally speaking androgynous and undifferentiated sex role type are more frequent than masculine and feminine type in elementary school children. 2. Androgynous sex role type students were higher than undifferentiated and masculine sex role types in scores of the interest toward home economics in practical arts subject. 3. Androgynous masculine and feminine sex role type students were higher than undifferentiated sex role types in scores of the interest toward agriculture in practical arts subject. 4. Masculine sex role type students were higher than androgynous types and undifferentiated and feminine sex role types were lower than androgynous in scores of the interest toward technology in practical arts subject. 5. Androgynous and masculine sex role type students were higher than feminine and undifferentiated sex role types in scores of the interest toward computer in practical arts subject.

• Journal of Korean Home Economics Education Association
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• v.26 no.4
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• pp.75-83
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• 2014

The purpose of this study was to examine the mediating effects of self-esteem on the relationship between parenting behaviors and peer relations among adolescents. The subjects of this study were middle school students who reside in Seoul. 425 self reported questionnaires were used for final analysis. Findings of this study from structural equation modeling analysis indicated that parenting behaviors affected self-esteem. Self-esteem of adolescents influenced peer relations. This study showed that self-esteem mediated the relationship between parenting behaviors and peer relations.

• Journal of the Korean Home Economics Association
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• v.39 no.9
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• pp.95-102
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• 2001

The Effects of Self-Esteem and Sociocultural Attitude toward Appearance on Clothing Behavior. The purpose of this study was to investigate to relation between self-esteem and sociocultural attitude toward appearance and clothing behavior i.e. individuality/self expression, body improvement, social approval, sex appeal. Measurements were included Rosenberg's self-esteem, Thompson's sociocultural attitude toward appearance questionnaire and clothing behavior. The data were collected from 498 female university students in Seoul and Kyongki Province. The collection works were undertaken between the 15th of June and 30th of June, 2001, The data were analyzed using factor analysis, reliability test, analysis of variance, and multiple regression analysis. The results of this study were as follows : 1) Three dimensions of sociocultural attitude toward appearance were identified: internalization, social awareness, and concrete awareness. 2) Self-esteem and internalization of sociocultural attitude toward appearance had an effect on clothing behavior i.e. individuality/self expression, body improvement, social approval and sex appeal. Social awareness of sociocultural attitude toward appearance had an effect on body improvement, social approval, and sex appeal.

• Journal of Korean Academy of Nursing Administration
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• v.20 no.5
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• pp.525-534
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• 2014

Purpose: The purpose of this study was to identify moderating and mediating effects of social support in the relationship between work-family conflict, job satisfaction and turnover intention among married women nurses. Methods: The sample for this study consisted of 225 married female nurses from two hospitals located in Seoul. Data were collected through structured questionnaires and analyzed using descriptive statistics, t-test, ANOVA, Pearson correlation coefficients and hierarchical multiple regression with the SPSS 21.0 program. Results: (a) Social support of married female nurses had significant moderating and mediating effects between work-family conflict and job satisfaction. (b) Social support of married female nurses had significant moderating and mediating effects between work-family conflict and turnover intention. Conclusion: The results of the study indicate that social support is an important factor in work-family conflict, job satisfaction and turnover intention among married female nurses. Supervisor support is important to married nurses as social support as it is controlled by the organization. Therefore, supportive relationships based on mutual respect between supervisors and nurses are necessary for a creative organizational atmosphere and system.