• The Bulletin of The Korean Astronomical Society
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• v.42 no.1
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• pp.53.2-53.2
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• 2017

The origin of the well-known correlation between Hubble residual of Type Ia Supernova (SN Ia) and mass of their host galaxies is yet to be fully understood. In our first paper of our YOnsei Evolutionary Supernovae Evolutionary Investigation (YONSEI) project, we found a significant (${\sim}3.9{\sigma}$) correlation between host galaxy mass (velocity dispersion) and population age from high S/N host spectra observed using LCO 2.5 m telescope. Since there is no correlation with metallicity, our result suggests that stellar population age is mainly responsible for the relation between host mass and HR. In order to explore this more directly, we have subsequently observed more sample of nearby early-type host galaxies using MMT 6.5 m telescope. In this poster presentation, we will report our progress in this project and show the preliminary results from our MMT observations.

• Korean Journal of Clinical Laboratory Science
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• v.44 no.4
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• pp.205-209
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• 2012

Obstructive sleep apnea (OSA) is the most common type of sleep apnea and is caused by obstruction of the upper airway. It is characterized by repetitive pauses in breathing during sleep despite the effort to breathe. Apnea is closely related to clinical findings and respiratory disturbance index (RDI). The total subjects were 42 (male 26, female 16) and examined by polysomography (PSG) in terms of RDI above 5 and below 5 at Mok-Dong Hospital in Ewha Womans University from January to June, 2012. The study revealed the followings: The comparison of clinical findings and RDI above 5 showed significant increase in age, BMI, and snoring sound although lowest $SpO_2$ level decreased. The correlation coefficient analysis between clinical findings and RDI showed statistically significant correlation in age, BMI, lowest $SpO_2$ although snoring sound and average $SpO_2$ showed statistically insignificant correlation.

• The Bulletin of The Korean Astronomical Society
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• v.39 no.1
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• pp.36.1-36.1
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• 2014

The correlation between mass of Type Ia Supernova (SN Ia) host galaxies and Hubble residual is now well-established. The origin of this relation, however, is yet to be understood. We have used low-resolution spectra of early-type hosts from YONSEI (YOnsei Nearby Supernovae Evolution Investigation) project to measure central velocity dispersion and Lick/IDS absorption indices. By using the Evolutionary Population Synthesis (EPS) models, luminosity-weighted mean age and metallicity of host galaxies were determined from $H{\beta}$ and absorption lines. Here we will discuss the correlation between the velocity dispersion, which indicates the mass of galaxies, and mean age of stellar population in our sample of early-type host galaxies.

• Journal of Korean Academy of Nursing Administration
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• v.9 no.2
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• pp.171-181
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• 2003

Purpose : The purpose of this study investigated the relationship between nurses' organizational commitment and their demographic characteristics. Method : The sample for this study consisted 356 nurses from 6 hospital at Seoul and Kyung Gi province, in Korea The Organizational Commitment Questionnaire developed by Mowday was used. The Pearson correlation coefficient, Tukey's Studentized Range Test were used for the statistical analysis by SAS program. Result : The Study was found that 1) The mean of nurses' Organizational Commitment was 3.01. 2) The Organizational Commitment was positive correlation with age, career and position of the whole nurses, but it was different from each hospital. 3) There was significant positive correlations among nurses' age, career, position and organizational commitment of nurses. 4) But the correlations between nurses' organizational commitment and religion, marrital status, nurses' age, career, position were different from each hospital. Conclusion : Therefore before each hospital want to improve it's own nurses' organizational commitment, hospital managers have to find factors which influence to the nurses' organizational commitment directly, indirectly.

• Child Health Nursing Research
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• v.17 no.3
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• pp.174-180
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• 2011

Purpose: This study was conducted to describe the relationship of perception of parenting attitude, behavior problems and resilience of school age children. Methods: Participants were 131 children enrolled in the 4th to 6th grades. Data were collected from November 29 to December 6, 2010 using a self-report questionnaire. The questionnaire included the Parental Bonding Instrument, Korean version of Youth Self-Report, and Resilience. Data were analyzed using SPSS WIN 18.0 program. Results: There were significant differences in resilience according to gender, relationship with peers, academic achievement and school satisfaction. Resilience showed a positive correlation with parental bonding attitude and negative correlation with problem behavior in the children. Conclusion: This result suggests that interventions focusing on parenting attitude to enhance resilience should be developed to help school age children.

• Korean Journal of Child Studies
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• v.23 no.2
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• pp.121-135
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• 2002

This study compared preadolescent communication skills and quality of peer relationships by institutionalization, sex, and age and tested the correlation between communication skills and quality of peer relationships. The subjects were 98 institutionalized and 115 homereared preadolescents. Interviews measured the communication skills of persuasive, comforting, and listener-adapted abilities. The quality of peer relationships was investigated through questionnaires consisting of both positive and negative factors. The data were analyzed by SPSS. Differences were found between institutionalized and homereared subjects in quality of peer relationships and in communication skills by sex, and age. There was a positive correlation between communication skills and quality of peer relationships.

• Journal of Oral Medicine and Pain
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• v.6 no.1
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• pp.91-100
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• 1981

The author collected 146 men's stone models and 175 women;s stone models over the age of twenties, and studied area ratio of attrition of molars. Area ratio of attrition = (area of attrition / area of occlusal surface)*100(%) All data were analyzed by means of statistical method, and following results were obtained. 1. There was correlation between age and area ratio of attrition, that is, area ratio of attrition was increased with aging process. 2. Regression equtions and coefficients of correlation showed a significant meaning. 3. Generally, upper teeth showed higher tendency of area ratio of attrition, being compared with lowers. 4. Being compared with male and female, there was no uniform difference.

• Journal of the Korean Home Economics Association
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• v.40 no.5
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• pp.225-235
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• 2002

The purpose of this research is to delineate the effect of maternal variables of the verbal abuse. Such variables as the mother's age, her education level, and maternal parenting stress have been chosen for the analysis. The sample subject were 659 pairs of fifth/sixth grade of elementary school and firs/second grade of middle school, and their mothers. The major findings of the research are as follows: first, looking at the correlation between the mother's age/education level and the verbal abuse, the verbal abuse factor shows difference correlating to the mother's age/education level. Second, looking at the correlation between the material parenting stress level and the verbal abuse, the verbal abuse factor shows difference correlating to the maternal parenting stress level. Third, the result of multiple regression analysis on the effects of the maternal variables to the verbal abuse indicates that material parenting stress is the significant contributing factor. All in all, the maternal variables account for 9% of the verbal abuse score.

• Journal of the Korean Home Economics Association
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• v.24 no.3
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• pp.1-9
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• 1986

The purpose of this study was to measure the body cathexis and clothing satisfaction sccording to the level of age, job, and total monthly income and to investigate the relationship between body cathexis and clothing satisfaction of married women. 43 items of body parts and body functions were selected to measure body cathexis from Secord and jourard body Cathexis scale. A nd 56 items of Mclean's Clothing Satisfac tion scale were used for clothing satisfaction. The questionnaires were administered to 384 mothers in Jeonbug province. 3-way ANOVA and Newman-Keuls test were used for group difference. Pearson's Correlation Coefficients, Partial Correlation Coefficients, Standard Deviation, and Mean were calculated. RESULTS : 1. Body cathexis of married women showed asignificant difference according to age. 2. Clothing satisfaction of married women showed a significant difference to the interaction of age, job, and total monthly income. The elder and higher income group without job had the highest clothing satisfaction scores than any other group. 3. Positive correlations were found among body cathexis, clothing satisfaction, and 6 subscales of clothing satisfaction.

• Journal of the Korean Home Economics Association
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• v.39 no.8
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• pp.53-66
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• 2001

The primary objectives of this research is to identify the unmarried mother's (1) socio-demographic characteristics and (2) factors that correlates their stress and (3) factors that predicts their stress. This study uses the data based on interviews with 136 unmarried mothers selected purposive sampling from the 5 unmarried mothers protective institutions in Seoul, Pyungtak, Chunchon, Taegu, and Gwanju. The major findings were as follows. First of all, the age of the first sexual activity of the late-teens among the unmarried mothers are over the half. The portions over the one time abortion are 33.3%. Second, the social support part in the coping sub-category had positive correlation with the stress of unmarried mothers. And the age of the first sexual activity and my thought on the adolescent sex had negative correlation with the stress of unmarried mothers. Third, the age of the first sexual activity predicted the stress of unmarried mothers. Therefore, the comprehensive and systematic intervention programs should be required to ensure that they intervene the stress of unmarried mothers.