• Journal of the East Asian Society of Dietary Life
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• v.9 no.2
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• pp.135-148
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• 1999

This is a descriptive study of consumption Patterns of how to take meals in everyday life. The data used was collected from a probability sample by multi-stage cluster sampling, drawn from those who were living in the Ulsan Metropolitan Area. Face-to-face interviews were conducted by trained interviewers with a household member who was between the ages of 15 and 60 in 1989 and had the earliest birthday, resulting in a sample of 1,232 respondents. Univariate and bivariate analyses were made to describe behavioral patterns of taking meals. Meal-taking behaviors under this study include frequency of taking meals per day, regularity of taking meals, which meal to skip, number of frequency of taking a meal by oneself. reasons of skipping and irregular meals, and eatting out. Half of the respondents reported to take meals three times a day, while those who skipped at least a meal reported as one most frequently skipped. Of reasons not to take a meal on a regular basis, "too busy to eat" was most frequently mentioned. Only 32.8% of the respondents reported dining-out once a week.ce a week.

• Journal of the Korean housing association
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• v.7 no.1
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• pp.75-84
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• 1996

This study examines the furniture usage behavior of the apartment dwellers in tile city of furniture usage by resident’s characteristics, such as floor space size, household income, the stage of family life cycle and housewife’s age. To this end, interviews were conducted with 304 individuals, either household heads or their spouses living in three residential areas in Seoul. The sample was selected among people living in apartment units with the 30s and 40s pyong of floor space size.The major findings of this study are as fllows ; The furniture and furnishings selected for the study are grouped into four clusters such as conversation-space components, ordinary decoration, high-quality decoration and miscellaneous components. Families in the stage of primary school life cycle were likely to possess fewer furniture and decorations than those in the stage of high school life cycle and in the launching stage. Younger housewives are less likely to possess ordinary and high-quality decorations than the older. Those living in the larger apartment units are likely to decorate their living room in an ornamental rather than functional way, and to possess more ordinary and high-quality decorations than those in the smaller. In this study, the size of floor space appers a variable most powerful to explain the pattern of furniture usage.

• The Journal of Korea Institute of Information, Electronics, and Communication Technology
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• v.8 no.2
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• pp.79-85
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• 2015

Home automation technology combines various devices in home organically with each other to ensure the convenience and improved safety of the home life refers to a technique for improving the human living. Because of the technology needed to make this house before you can act as awareness of your thoughts. In this paper, we implement the system model, such as data collection using a sensor network, and take advantage of the idea that the data itself to the home, and an introduction to the method.

• Journal of Marine Life Science
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• v.9 no.1
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• pp.41-46
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• 2024

This study aimed to reconfirm the sex change scale and pattern of Tegillarca granosa. Although the sex ratio (female : male, female proportion) of T. granosa was 1:2.32 (30.2%) at the initial stage (2011) of the study, it was 1:0.94 (51.5%) after one year (2012) in the same population. The increase of the female proportion was greater in the 2+ year class (23.0%) when compared to the 1+ year class (19.2%). Overall, sex change ratio of 37.6% was observed in this population of T. granosa. The sex change ratio of the 2+ year class (39.3%) was higher than that of the 1+ year class (35.3%). And sex change ratio in the males (42.2%) was higher than that in the females (26.9%). The female proportion was the opposite of the result from 2006~2007, and one of the causes was presumed to be the difference in cumulative water temperature during the gonadal inactive stage (winter).

• Journal of the Korean Home Economics Association
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• v.35 no.6
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• pp.275-288
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• 1997

This paper has two purposes. the one was to find empirical patterns of rural and urban elderly's leisure activities, and the other was to test the effects of elderly's leisure activities on life satisfaction. the data were collected for 319 respondents aged over 50s who resided in Jeonbuk rural and urban areas. Through exploratory factor analysis, we found ten patterns of leisure activities. In addition, we conducted multiple regression analysis to test net effects of those leisure activities on life satisfaction. the results indicate that even no one pattern of leisure activities significantly influences the elderly's life satisfaction, controlling for social correlates (consisted of social structural, family relationship, personality, and socio-economic demographic variables). Rather, the respondent's level of health, level of economic status, and positive relationship with adult children have significant net effects on respondent's life satisfaction. This result suggests that the positive relationship between leisure activities and life satisfaction in the existing empirical studies might be spurious. We recommend that the further studies should conduct survey and analyze the data for affluent elderly residing in more urbanized areas.

• Journal of the Korean Society for Precision Engineering
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• v.15 no.11
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• pp.189-198
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• 1998

Recently, monitoring of tool life is a matter of common interesting because tool life affects precision, productivity and cost in machining process. Especially flank wear has a direct effect on cutting mechanism, so the various pattern of cutting force is obtained experimentally according to variation of wear condition. By investigating cutting force signal, AR(Autoregressive) modeling and correlation dimension analysis is conducted in turning operation. In this modeling and analysis, we extract features through 6th AR model, correlation integral and normalized correlation integral. After the back-propagation model of the neural network is utilized to monitor tool life according to flank wear. As a result. a very reliable classification of tool life was obtained.

• Journal of the Korean Society of Food Culture
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• v.33 no.4
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• pp.299-306
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• 2018

Pork is a popular meat consumed in Korea. However, the consumption pattern has typically focused on preferred parts, like pork belly, which is usually broiled. This consumption pattern has increased both stocks of low fat parts and medical costs, and has thereby disturbed pork industry growth and the national health welfare. Changing the consumption patterns of preferred parts and encouraging consumption of low fat parts will improve consumers' quality of life and also increase their benefits. Thus, this study estimated WTP (Willingness To Pay) for health funds among consumers who eat pork meat, considering the health benefits gained by consuming low fat parts and changes in preferred part consumption. The results of this study show that WTP is higher when consumers have a smaller family and a higher income; these consumers plan to increase intake of pork meat in the future and think that the promotion of low fat pork meat consumption is more important. The WTP for health funds is estimated to be 49won to 287won through Logit Model. The health benefits of low fat consumption were estimated to be 92 billion won to 539 billion won per year. Therefore, reforming low fat pork consumption not only changes the traditional consumption pattern focused on preferred parts but also leads to a variety of benefits for consumers, including health benefits.

• Korea journal of population studies
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• v.35 no.1
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• pp.151-179
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• 2012

This study investigates birth cohort and educational differences in the marital and fertility life course using the Hernes model. First, lifetime marriage rates remain high across birth cohorts but men in the youngest birth cohort(1965-74) experience a somewhat significant reduction in ever-marriage rates. Second, this study also finds educational differences in lifetime marriage rates across birth cohorts. The likelihood of being never married is particularly high for poorly educated men in the youngest birth cohort but women show the opposite pattern. Third, quantum changes in the fertility transition are more likely to be the changes in higher-order births, while the changes in first and second births are mainly tempo changes. Fourth, the negative association between education and fertility is significantly larger for higher-order births. Finally, marriage and fertility show the opposite pattern in their association with education. Overall, educational differences in lifetime marriage rates become stronger across birth cohorts but the association between education and higher-order births shows the opposite pattern.

• The Journal of Korean Academic Society of Nursing Education
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• v.18 no.3
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• pp.413-423
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• 2012

Purpose: This study was aimed to evaluate the changes of health behaviors and concepts via self-reflection after health education with 6 videotapes for undergraduate students. Method: After the first semester in 2011, we collected the data for evaluating their own health-related life-style. Using qualitative content method, the data were analyzed. Result: Thirty-nine students participated in this study. Average age was 22.7 years, and 27 were male. Thirty-seven students replied unhealthy diet pattern; irregular meal time and binge. Four themes and 11 subjects emerged. The four themes were new perception for health and illness, evaluation of own health state, checking for health-related lifestyle, and trying to change for a healthy life pattern. The eleven subjects were chance to change their health habits, new perception about illness experience with family, uncertainty about upcoming health, worry about disease occurring, grasp the facts of unhealthy diet pattern, less exercise, growing stress, high-pressure drinking culture in the university, increasing concern for a healthy life, trying to change lifestyle, and difficulty in changing lifestyle. Conclusion: From the results of this study, we concluded that self-reflection on the health behaviors after health education with videotapes could reinforce to change health behaviors and concepts for undergraduate students.

• Journal of the Korea Society of Computer and Information
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• v.16 no.8
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• pp.85-93
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• 2011

In this paper, we analyzed the function elements of the Integrated meter reading system based on PLC which is working in Mok-dong, Seoul and studied how to improve the vulnerability. Also we propose an efficient method for the estimation of abnormal life status through frequency domain processing of utility meter readings. We found out that even after removing the high-frequency components from the raw meter data, the shape of the graph still maintains the original graph characteristics. The graph of the inverse transformed data has simpler and smoother curve than the original graph pattern. The original graph is not good to be used in deciding whether the residence's life pattern is normal or not. We could find out that the graph which is processed frequency signal has simple and intuitive graph pattern.