• Journal of Korean Society for Atmospheric Environment
• /
• v.17 no.3
• /
• pp.251-258
• /
• 2001

Indoor and outdoor nitrogen dioxide(NO$_2$) concentrations of 122 houses were measured and compared with measurements of personal NO$_2$ exposure simultaneously . Time activity patterns were used to determine the impacts on NO$_2$ exposure assessment and time weighed average model to estimate the personal NO$_2$ exposure. Most people spent their times more than 80% of indoor and more than 50% in home, respectively. Personal NO$_2$ esposure was found to be significantly associated with both indoor NO$_2$ concentration(r=0.70) and outdoor NO$_2$ concentration (r=0.68). Using time weighted average model, personal NO$_2$ exposure was estimated with NO$_2$ measurements in indoor home, indoor workplace and outdoor home. The estimated NO$_2$ measurements were significantly correlated with measured personal exposures(r=0.69, N=122). For the difference between measured and estimated NO$_2$ exposures by multiple regression analysis showed that NO$_2$ concentrations in near workplace and other outdoors of no NO$_2$ measurements affected the personal NO$_2$ exposures(p=0.023).

• Korean Journal of Cognitive Science
• /
• v.14 no.4
• /
• pp.53-63
• /
• 2003

We analyzed the relationships between facial impressions and physical features, and investigated the effects of impressions on facial similarity judgments. Using 79 faces extracted from a face database, we collected the ratings of impressions along four dimensions -mild-fierce, bright-dull, feminine-manly and youthful-mature- and the measures of 41 physical features. Multiple Regression Analyses showed that the ratings of impressions and the measures of features are closely connected with each other. Our experiments using facial similarity judgments confirmed the possibility that facial impressions are used in processing of facial information. We found that people tend to perceive faces as similar when they have the same impressions rather than neutral ones, although all of them are alike physically. These results imply that facial impressions are used as a psychological structure representing facial appearance, and that facial processing includes impression information.

• Journal of Distribution Science
• /
• v.18 no.1
• /
• pp.27-34
• /
• 2020

Purpose : In the aviation industry, we will investigate the impact of users' acceptance of technology on their usage behavior and find out the factors that affect their acceptance of technology. We will expand the prior study to find out the impact of the self-service technology of Incheon Airport. Research design, data and methodology : Within the last six months, the survey was conducted on people using self-service technology at Incheon International Airport from July to August 2019. Part 307 of the valid questionnaires were used for this final analysis. The collected data were used to perform frequency, factor, reliability, and multiple regression analyses using the SPSS statistical package. Results : Individual aspects of external variables, service aspects and system aspects have been shown to affect usefulness and perceived ease of use. Also, perceived ease-of-use and usefulness have effects on users' intention to accept technology. Conclusions : The perceived easement and perceived usefulness of Incheon International Airport has been shown to affect self-service users. Increasing the user's self-efficiency and increasing the user's expectations for benefits, convenience, rapid processing, and minimal effort will have a positive meaningful effect on the intention of accepting the technology.

• Proceedings of the KSRS Conference
• /
• v.2
• /
• pp.868-871
• /
• 2006

Mortality of domestic people from cardiovascular disease ranked second, which followed that of from cancer last year. Therefore, it is very important and urgent to enhance the reliability of medical examination and treatment for cardiovascular disease. Heart Rate Variability (HRV) is the most commonly used noninvasive methods to evaluate autonomic regulation of heart rate and conditions of a human heart. In this paper, our aim is to extract a quantitative measure for HRV to enhance the reliability of medical examination for cardiovascular disease, and then develop a prediction method for extracting multi-parametric features by analyzing HRV from ECG. In this study, we propose a hybrid Bayesian classifier called FP-based Bayesian. The proposed classifier use frequent patterns for building Bayesian model. Since the volume of patterns produced can be large, we offer a rule cohesion measure that allows a strong push of pruning patterns in the pattern-generating process. We conduct an experiment for the FP-based Bayesian classifier, which utilizes multiple rules and pruning, and biased confidence (or cohesion measure) and dataset consisting of 670 participants distributed into two groups, namely normal and patients with coronary artery disease.

• Korean Journal of Human Ecology
• /
• v.17 no.2
• /
• pp.191-205
• /
• 2008

The study aims at exploring a general trend of psychological well-being (PWB) of elderly volunteers and analyzing the variables which give effects on their PWB. The subjects were two hundred men and women over 60 years old currently participating in voluntary service. The data collected from interviewing were analyzed by descriptive statistics, $x^2$ test, Pearson's correlation and hierarchical multiple regression. The main results are: First, PWB of the elderly is higher than the average score of PWB. Second, the elderly's generativity is positively related to PWB. Family support such as an emotional and instrumental support was also positively related to PWB. Third, the variables effecting on PWB of elderly volunteers were education level, participation frequency, generativity level, and an instrumental support of their family members on it. The lower their educational level was, the more frequently they participated in voluntary activity, the higher their generativity level was, and the more support given from their family, the higher PWB scores they showed.

• Journal of Agricultural Extension & Community Development
• /
• v.21 no.3
• /
• pp.91-119
• /
• 2014

This study explored feasibility of social cooperatives as a strategy of struggle to social exclusion in the social services area based on the relationships between people. Is social cooperatives on the Fundamental Act on Cooperatives a new type of social welfare service providers comparing the social welfare foundations and social enterprises? Would be expected as social inclusion processes effects arising from the properties of cooperative in social welfare sector? If social welfare institutions function as an intermediate medium between government and users, social cooperatives can be performed function in the community in a variety of cooperative relationships with Multiple stakeholders, e.g. various service providers, care-givers, social workers, and users, etc., conflicting the interests. In this perspective, looked the possibility of social cooperatives as community welfare practice model.

• Journal of Korean Academy of Fundamentals of Nursing
• /
• v.21 no.1
• /
• pp.18-28
• /
• 2014

Purpose: This study was done to apply Andersen's behavioral model to identify factors that determine oral health-related quality of life in elderly persons. Methods: Participants were 257 people ages 65 years or older. Data were analyzed using frequency, percentage, mean and hierarchical multiple regression. Results: The variables in the behavioral model, predisposing factors, enabling factors and need factors, explained 31% (F=12.7, p<.001) of variance in oral health-related quality of life. The predisposing factors, enabling factors, need factors and health behavior collectively explained 35% (F=9.22, p<.001) of variance in oral health-related quality of life. Factors influencing oral health-related quality of life in older adults were ADL and IADL, self-reported oral health status, xerostomia and dental care in last 12 months. Conclusions: The analysis results showed that the need factor had the highest level of relative importance of the three factors. The model used for this study can be used to predict oral health-related quality of life.

• Journal of Korean Academy of Fundamentals of Nursing
• /
• v.19 no.4
• /
• pp.483-492
• /
• 2012

Purpose: This study was done to identify the relationship of perceived health status, leisure satisfaction, loneliness and life satisfaction and to identify predictors of life satisfaction for elders. Method: The research design for this study was a descriptive survey design using a convenience sample. Data collection was done using self-report questionnaires with 297 elders from 6 community health practitioner posts. Data were analyzed using ANOVA, t-test, Pearson correlation coefficients and hierarchical multiple regression with the SPSS Win 18.0 Program. Results: Life satisfaction had significant negative correlations with age (r=-.31, p<.001) and loneliness (r=-.73, p<.001), and positive correlations with monthly spending money (r=.44, p<.001), health status (r=.63, p<.001), and leisure satisfaction (r=.62, p<.001). The explained variance for life satisfaction was 72%. Variables of monthly spending money, health status, leisure satisfaction, and loneliness significantly predicted the degree on life satisfaction of these elders. Conclusion: Findings of this study provide a comprehensive understanding of life satisfaction and related factors for elders in Korea. However, further studies with a larger random sample and more detailed research design are necessary.

• Korean Journal of Adult Nursing
• /
• v.19 no.4
• /
• pp.535-546
• /
• 2007

Purpose: This study was conducted to evaluate life satisfaction(LS) and to assess the factors that influence LS in senior center elderly people. Methods: The subjects were 253 elders who visited the Y city Senior Welfare Center between July 2006 and August 2006. Data were collected using structured questionnaires. The instruments were composed of Kang's Family Support Scale, Depression Scale by Sheikh & Yesavage, Laffery's Health Concept Scale, and LS scale by Choi. T-test, ANOVA, Duncan test, Pearson coefficients correlation and stepwise multiple regression were used to analyze the data using the SPSS Win 12.0 program. Results: The LS level showed a maximum score of 38 with a mean score of 23.23. The mean scores for depression, health perception and family support were 5.52(maximum score, 15), 77.46(maximum score, 112), 43.45(maximum score, 55) respectively. The LS were significantly correlated with health perception, depression and family support. Depression was the most powerful predictor of and it accounted for 42.0% of the total variance in LS. A combination of significance of eudaimonistic health perception and satisfaction with pocket money accounted for 47.2% in LS. Conclusion: Depression and health perception were identified as affecting variables for the LS. Based upon these results, nurses should help the aged to enhance their LS.

• Korean Journal of Health Education and Promotion
• /
• v.33 no.2
• /
• pp.39-45
• /
• 2016

Objectives: The purpose of this study is to parenting attitudes perceived by adolescents into different groups and to examine the impact of sub-factors of parenting attitudes on smart phone addiction. Methods: Data was collected by distributing questionnaires to high school students located in the nationwide regions and a total of 1,020 people were surveyed. Inconsistent parenting attitudes were divided into the consistent group and inconsistent group to carry out descriptive statistics, multiple regression, and path analysis. Results: In both the consistent and inconsistent parenting attitude groups, it was found that among the sub-factors, interest(p<.01) had the biggest impact on smart phone addiction. Inconsistent parenting attitude group was found that smart phone addiction levels in adolescents were more higher than consistent parenting attitude group. Conclusions: Through the above results, it was confirmed that smart phone addiction to directly impact parenting attitude. This implies that when raising their children, parents should display consistent attitudes in order to prevent addictive smart phone usage among adolescent.