• Research in Community and Public Health Nursing
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• v.22 no.3
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• pp.315-324
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• 2011

Purpose: The purpose of this study was to investigate the relationships between problem behavior, school stressor and family strength in high-school girls. Methods: Data were collected from 200 high school girls in 2008. Data were analyzed with SPSS/WIN 18.0. Results: There was a positive correlation between problem behavior and school stressor. There was a negative correlation between problem behavior and family strength. The predictors of problem behavior were school stressor, family strength, and monthly family income and these factors explained 43.0% of problem behavior. Conclusion: The findings of this study suggest the necessity of developing nursing intervention programs for enhancing high-school girls' skills in interpersonal relationship and communication to decrease school stressor and increase family strength.

• 한국경영정보학회:학술대회논문집
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• 2007.06a
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• pp.576-581
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• 2007

The purpose of this paper is to strengthen trust on the automated collaborative filtering system. Automated collaborative filtering system is quickly becoming a popular technique for recommendation system. This elaborative methodology contributes for reducing information overload and the result becomes index of users' preference. In addition, it can be applied to various industries in various fields. After it collaborative filtering system was developed, many researches are executed to enhance credibility and to apply in various fields. Among these diverse systems, collaborative filtering system which uses Pearson correlation coefficient is most common in many researches. In this paper, we proposed new process diagram of collaborative filtering algorithm and new factors which should improve the credibility of system. In addition, the effects and relationships are also tested.

• Journal of Nutrition and Health
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• v.26 no.3
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• pp.357-366
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• 1993

The purposes of this study were to investigate the operational affecting productivity in hospital foodservice, and to examine the relationships between operational factors affecting productivity. The 28 hospitals over 400 beds in Seoul were mailed questionnaires assessing the factors that affect productivity in hospital foodservice(23 hospitals responded). Data analyses included descriptive statistics. Pearson product moment correlation analysis, and stepwise multiple regression analysis. The result of Pearson product moment correlation analysis indicated that the percentage of patient meals was significantly correlated to the productivity (r=.5560, p<.01). Stepwise multiple regression analysis indicated that the percentage of patient meals and the average work hours of employees were significant predictors of the operational factors at productivity.

• Journal of the Korean Data and Information Science Society
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• v.17 no.4
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• pp.1219-1235
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• 2006

This study aimed to inquire the relationship among wellness, quality of life and socio-demographic variables in Korean middle school students. 'Korean Wellness Scale for Middle school students(K-WSM), Quality of Life Scale, and other socio-demographic data were surveyed to 1,200 students in national wide area. For the results, ANOVA, Pearson's Correlation, and Multiple regression were conducted. With demographic variables, sex, religion, & academic achievement of students, social economic status(SES) and living with both of parents were positively related to wellness and quality of life. But grade and physical disease of student didn't show significant relationships. The relationship between wellness and quality of life showed high correlation (r=.66, p < .05). Among the wellness subscales, spiritual and social wellness showed significant predictive power. In the end, the contributions and limitations of this study were discussed.

• Journal of Integrative Natural Science
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• v.4 no.3
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• pp.210-215
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• 2011

Holographic quantitative structure-activity relationships (HQSAR) is a useful tool to correlates structures with their biological activities. HQSAR is a two dimensional (2D) QSAR methodology, which generates QSAR equations through 2D fingerprint and correlates it with biological activity. Here, we report a 2D-QSAR model for a series of fifty-one 3,4-dihydroxychalcones derivatives utilizing HQSAR methodology. We developed HQSAR model with 6 optimum numbers of components (ONC), which resulted in cross-validated correlation coefficient ($q^2$) of 0.855 with 0.283 standard error of estimate (SEE). The non-cross-validated correlation coefficient (r2) with 0.966 indicates the model is predictive enough for analysis. Developed HQSAR model was binned in to a hologram length of 257. Atomic contribution map revealed the importance of dihydroxy substitution on phenyl ring.

• Journal of Ecology and Environment
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• v.30 no.1
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• pp.39-47
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• 2007

The relationships between the cover of herbaceous species and 15 soil chemical properties (organic carbon contents, total N, available P, exchangeable K, Na, Ca and Mg, HCl-extractable Cd, Cr, Cu, Fe, Mn, Ni, Pb and Zn) in nine poorly controlled waste landfill sites in Korea were examined by correlation analysis and multiple regression equations. Species showed different patterns of correlation between their cover values and soil chemical properties. The cover of Ambrosia artemisiifolia var. elatior, Aster subulatus var. sandwicensis and Erechtites hieracifolia were negatively correlated with the contents of Fe, Mn and Ni within landfill soils. Total cover of all species in quadrats was positively correlated with the contents of Cd and negatively correlated with the contents of Mn and Fe from stepwise regression analysis with 15 soil properties. Canonical correspondence analysis demonstrated that the distribution of native and exotic plants on poorly controlled landfills was significantly influenced by the contents of Na and Ca in soils, respectively.

• The Journal of Korean Academic Society of Nursing Education
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• v.24 no.1
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• pp.72-79
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• 2018

Purpose: The purpose of this study was to investigate the effects of positive thinking and self-esteem on school adaptation among freshmen in a nursing department. Methods: Data were collected by questionnaires from 172 nursing students in the month of December 2017. The collected data were analyzed using descriptive statistics, an independent t-test, ANOVA, Pearson's correlation coefficient, and stepwise multiple regression. Results: A positive correlation was found for school adaptation with positive thinking and self-esteem. Positive thinking, self-esteem, major satisfaction and interpersonal relationships were all significant predictors of school adaptation. The model explained 43.6% of the variables. Conclusion: The results of this study suggest that positive thinking should be considered when developing strategies to increase school adaptation among freshmen in nursing departments.

• Journal of the Korean Society of Costume
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• v.61 no.6
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• pp.101-112
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• 2011

The purpose of this study was to investigate the relationships among clothing image, make-up image, and hair image. The Data were collected from 306 women living in Gyeongnam province in June, 2009. Statistical analysis used in this study were frequency, F-test, t-test, Duncan test, factor analysis, Cronbach's ${\alpha}$, correlation coefficient, and multiple regression. The results of this study were as follows.: Three factors of clothing image were titled as elegance, youth, and visibility. Three factors of make-up image were titled as modern, romanticism, and mediocrity. Four factors of hair image were titled as attraction, individuality, gentleness, and cuteness. The clothing image, make-up image, and hair image according to the demographic characteristic of women showed significant difference. The clothing image resulted in correlation with the make-up image and hair image. The clothing image had a influence on the make-up image and hair image.

• Korean Journal of Child Studies
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• v.30 no.3
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• pp.37-53
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• 2009

This study researched aspects of gender and grade related to the after-school happiness of lower grade elementary students and the correlation between the children's happiness and their stress and playfulness. Results of surveys and interviews of 124 lower grade elementary students who attended 4 after-school programs in Seoul showed that : (1) there were no gender differences in happiness but first graders were the happiest, then 2nd graders and the 3rd graders who were the least happy. (2) Children's happiness correlated negatively with stress. (3) There was no relationship between children's overall happiness and playfulness, but there was a negative correlation between happiness and playfulness under the sub-category of cognitive spontaneity. Results were discussed in relation to the Korean socio-cultural environment.

• Asian Journal of Turfgrass Science
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• v.9 no.1
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• pp.53-74
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• 1995

This study was made on the relationships among production structures, biomass and Soil proper-ties of grassland types in Chejudo. The results of this investigation were obtained as foolows. The annual productions of the grasslands of Zoysio, Imperata, Themede, Miscanthus and Pteridium types were 40.36~144.00, 168.28~272.44, 58.24~138.44, 156.12 ~714. 12 and 157. 18~398.40g /m$^2$, respectively. The production structures of those grassland types were different from one another. The water contents, organic matter, total nitrogen and available phosphorus were different levels between grasslands had a simple correlation at 5% level and the organic matter contents were a higher significant at the partial correlation. Key words: Production Structure, Biomass, Soil properity, Chejudo.