• Journal of the Korean Home Economics Association
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• v.42 no.12 s.202
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• pp.205-218
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• 2004

We analyzed the dynamics of the family system and the economic well-being by utilizing the socio-demographic, objective economic, and subjective economic factors of urban unemployed housewives. The survey was conducted in Seoul and three other major cities. The subjects included housewives in these areas who were currently cohabiting with their spouses and had at least one child. The preliminary and main survey questionnaires were distributed between November 12, 2001 and February 27, 2002. Three hundred five survey questionnaires were collected and analyzed. We applied the frequency, average, percentage, Pearson's correlation coefficient, Cronbach's, simple regression and multiple regression analysis by using SPSS/PC WIN. The findings were as follows. First, the mean score of the availability of life information was 3.21. Second, when the availability of life information increased, the dynamics of family system improved. Third, when the dynamics of family system worked well, the housewives experienced economic well-being.

• Journal of the Korean Institute of Landscape Architecture
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• v.36 no.1
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• pp.12-27
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• 2008

The purpose of this plan was to introduce the imaginary environment concept to modem environment design which was drawn by comparison of historic and cultural landscape. An area of $19,056m^2$ in I1-ja mountain water reservoir, located in 94 Dun-Chon-Dong, Gangdong-Gu, Seoul was selected for this planning. The concepts of Barrier-Free Design and Universal Design were introduced in order to accept the demands of various social classes. Based on the results of natural and cultural environment, Animism, Heaven, Earth and Man Theory and Yin-Yang and the Five Elements Theory these concepts were introduced for the philosophical background. Concept planning, topic selection, space planning and axis establishment were conducted during the framework step of the plan. Circulation planning, planting planning, facility and pavement planning, and light planning were conducted during the initial planning step. Lastly, detailed designing was performed for the major spaces. In addition, the imaginary environment concept was applied, ranging from the structural aspect of the space to designing factors of the facility in order to achieve placeness and practicality. In conclusion, this may be the first case design applying the imaginary environment concept to the environmental design with natural environment factors such as animals, plants, terrains and climate, and cultural such as cities, places, time, thoughts and symbols which are all factors to be considered in the existing environment design.

• Food Science and Biotechnology
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• v.16 no.4
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• pp.621-625
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• 2007

Staphylococcus aureus in Korean kimbab rolls was monitored seasonally in 4 major cities of Korea to investigate the risk of S. aureus in a pre-prepared meal. Thirty-five (28.6%) of 105 kimbab rolls purchased in winter were contaminated with S. aureus with an average level of 2.6 log CFU/g. Thirty-six (33.0%) of 109 kimbab rolls purchased in summer and autumn were contained S. aureus with an average level of 2.9 log CFU/g. Kimbab purchased in snack bars showed higher S. aureus contamination rates with the maximum level of 4.7 log CFU/g than that purchased in convenience stores. Of the raw materials in kimbab, uncooked perilla leaf had the highest contamination rate of S. aureus. Less than 50% of S. aureus isolated from kimbab produced enterotoxin and most of the staphylococcal enterotoxin produced by S. aureus in kimbab was type A.

• Journal of Korean Society of Rural Planning
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• v.26 no.4
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• pp.107-116
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• 2020

The purpose of this study is to analyze the characteristics of the 11 southeastern states in the United States by using regional characteristics variables and to classify the regions. First, 19 variables from four categories of population, society, industry-economy and urban service were selected and factor analysis were conducted, and the result showed five major factors of population, economic condition, job and commuting. Based on the following factor scores, a cluster analysis was conducted, and eight types of big city, medium-sized city, bed town, small town, urban hinterland, retirement town, and rural village were derived. These types of spatial distribution characteristics showed big cities were by different types of regions and they formed metropolitan areas. Each types of classified regions were located along the road network with hierarchy. The study focused on cases in the southeastern regions of the United States and can be used as a comparison with Korean cases. If the same research method is applied to Korea in the future, or if the time series of changes is tracked by analyzing different time points, it will greatly help identify the characteristics of urban and rural mixed areas.

• Journal of Environmental Science International
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• v.30 no.10
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• pp.821-831
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• 2021

The relationship between night cooling rate and meteorological elements was investigated over the past five years (2016-2020), using weather data from the new (Daegu(143)) and old (Shinam(860)) Daegu Regional Meteorological Agency located in the suburban and urban regions, respectively. There was a correlation between the total daily amount of solar radiation (S_tot) and the night cooling rate in the both regions. However, a higher correlation was observed at the new Daegu Regional Meteorological Agency station (Daegu(143)). In particular, data from the new Daegu Regional Meteorological Administration's observatory, which experiences a low thermal storage effect caused by artificial structures, showed a higher correlation between nighttime cooling and weather factors. The reason for this is that the lesser the heat storage effect caused by the artificial structures, the better the effect of surface radiation cooling on temperature reduction. These findings confirm that the correlation between night cooling and weather factors can be used to assess the impact of artificial structures in cities.

• Journal of the Korean Geographical Society
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• v.33 no.3
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• pp.395-409
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• 1998

The purpose of this paper is to determine the atmospheric conditions in whih urban areas affect the precipitation processes and to evaluate whether certain weather types show more apparent urban effect on precipitation modification over five cities in the southem United States. Each heavy rainstorm is classified into one of three synoptic weather types (frontal storm, airmass storm or tropical disturbance storm). Heavy rainstorm day is defined as day producing rainfall totals that equal o exceed 2 inches (50.08 mm). Houston, Dallass and San Antonio show possible urban effects on rainfall totals and frequencies of heavy rainstorms by airmass storm type while New Orleans and Memphis do not reveal any distinct precipitation enhancements through the synoptic analysis. The results of TSA (Trend Surface Analysis) show that frontal and tropical disturbance storm types have stronger climatic gradients than airmass types and the patterns of rainfall totals have stronger trends than those of rainfall frequencies for the five cities. The results suggest that airmass type events may well reveal possible precipitation enhancements due to urban effects since they are less influenced by a strong climate gradient and they provide favorable conditions for development of urban heat islands. Residual analysis confirms that rainfall totals and frequencies of heavy rainstorms by airmass storm type have positive residuals over the city or the major effect area.

• The Journal of Korean Academy of Orthopedic Manual Physical Therapy
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• v.19 no.1
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• pp.21-31
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• 2013

Background: The purpose of this survey is to determine the job and task satisfaction of physiotherapists. These are important factors because they are directly connected to both morale and work efficiency. Methods: Data was collected from March 9th, 2013 to April 15th, 2013 using self-administered questionnaires. First, Cronbach Alpha coefficient was used to evaluate date reliability. Further data analysis used mean and standard deviation to determine frequency and satisfaction for each characteristic. To determine the significance of job and task satisfaction, T-test and an analysis of variance were performed. Also, regression analysis was used to find out a relation between job satisfaction of physiotherapist and task satisfaction of orthopaedic physical therapy. Result: This survey includes results from 197 physiotherapists who engage in orthopaedic physical therapy from major, medium and small cities. The general characteristics of survey respondents include: 112 males (56.9%), 85 females (43.1%); 123 in their twenties (62.4%), 56 in their thirties (28.4%), and 18 over forty (9.1%); 156 had less than five years work experience in orthopaedics, 25 had six to ten years, and 16 had more than eleven years work experience. In the physiotherapist's job satisfaction survey (out of 5), males averaged 3.71 and females averaged 3.43. Individuals with less than five years in the career averaged 3.5, 3.69 for between 6 to 10 years in career, 3.87 for over 11 years in career; this showed a significant difference. Results of the sub-factors of job satisfaction were 3.81 for self-esteem and 3.21 for prospect of occupation. Results of task satisfaction in orthopaedic therapy showed a significant difference between 4.03 for males and 3.66 for females. For sub-factors of task satisfaction scores were 3.81 for vision, 4.29 for task adoption, and 3.57 for task recognition. Conclusion: Physiotherapists will be satisfied when their motivation to work and morale are increased by concerns such as improving the education environment, expert physiotherapist adoption issue, and medical law revision.

• The Journal of the Korea Contents Association
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• v.10 no.1
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• pp.381-390
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• 2010

The study aims to figure the effect quality of perceived education service on service value of student' satisfaction major in physical education students' of college. The subjects of the study are students enrolled in Junior colleges located in Seoul and five major cities (Busan, Daejeon, Incheon, Ulsan and Gwangju) as of May 2008. It adopted purposeful sampling method to sample 443 students, and 409 effective samples were used in the study. SPSS 12.0 was used to conduct factor, reliability, frequent analysis, correlation and regression analyses, and the study reached the following conclusions. First, the tangibles and responsiveness of the quality of education service had positive effected on the value of service. Second, the tangibles, reliability, responsiveness and irritability had positive effected on students' satisfaction. Third, the value of service had positive effected on students' satisfaction.

• Korean Journal of Optics and Photonics
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• v.33 no.3
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• pp.113-121
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• 2022

We analyze the link availability of satellite-to-ground free-space optical (FSO) communication systems in South Korea. Using ten-year meteorological data for five major cities (Seoul, Busan, Daegu, Daejeon, and Gwangju), we theoretically predict the link availability from the power losses induced by absorption, scattering, aerosols, and scintillation in the atmospheric channel. For accurate but conservative estimation of the link availability determined by cloud cover, we propose a loss model based on the maximum value of cloud droplet concentration. The results show that the link availability ranges from 45% to 70% when a single ground station is placed in a major city in South Korea and a 20-dB link budget is allocated for atmospheric loss. However, the availabilities improve to 90% and 97% when 3- and 5-site diversities are employed, respectively.

• Journal of the Korean Association of Geographic Information Studies
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• v.20 no.2
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• pp.1-16
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• 2017

This study was conducted to analyze the urban heat island(UHI) intensity of South Korea by using Moderate Resolution Imaging Spectroradiometer(MODIS) satellite imagery. For this purpose, the metropolitan area was spatially divided according to land cover classification into urban and non-urban land. From the analysis of land surface temperature(LST) in South Korea in the summer of 2009 which was calculated from MODIS satellite imagery it was determined that the highest temperature recorded nationwide was $36.0^{\circ}C$, lowest $16.2^{\circ}C$, and that the mean was $24.3^{\circ}C$, with a standard deviation of $2.4^{\circ}C$. In order to analyze UHI by cities and counties, UHI intensity was defined as the difference in average temperature between urban and non-urban land, and was calculated through RST1 and RST2. The RST1 calculation showed scattered distribution in areas of high UHI intensity, whereas the RST2 calculation showed that areas of high UHI intensity were concentrated around major cities. In order to find an effective method for analyzing UHI by cities and counties, analysis was conducted of the correlation between the urbanization ratio, number of tropical heat nights, and number of heat-wave days. Although UHI intensity derived through RST1 showed barely any correlation, that derived through RST2 showed significant correlation. The RST2 method is deemed as a more suitable analytical method for measuring the UHI of urban land in cities and counties across the country. In cities and counties with an urbanization ratio of < 20%, the rate of increase for UHI intensity in proportion to increases in urbanization ratio, was very high; whereas this rate gradually declined when the urbanization ratio was > 20%. With an increase of $1^{\circ}C$ in RST2 UHI intensity, the number of tropical heat nights and heat wave days was predicted to increase by approximately five and 0.5, respectively. These results can be used for reference when predicting the effects of increased urbanization on UHI intensity.