• Journal of Home Health Care Nursing
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• v.19 no.2
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• pp.150-161
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• 2012

Purpose: This study was performed to investigate the influencing factors of cognitive function and depression in elderly. Method: From 3 provinces, 282 elders who resided in community and facilities completed structured questionnaires, including cognitive functions, depression, self-esteem, ADL, and IADL. Data were analyzed by applying ${\chi}^2$-test, ANOVA, partial correlation coefficient, and stepwise multiple regression analysis with SAS 8.12. Results: Community dwelling aged people showed higher scores in MMSE-K, self-esteem, ADL and IADL, and showed lower scores in depression than facility elders. MMSE-K was positively correlated in self-esteem, ADL, and personal cognition of health, except depression. Major factors that affect cognitive function of elderly were residual type, age, and IADL. In addition, major factors that affect depression of elderly were self-esteem, personal cognition of health, and marital status. Conclusions: Based on the results above, it is necessary to identify the status of cognition and depression in the elderly, and to develop nursing intervention programs, which improve cognitive function and reduce depression for aged, especially for the facility admitted aged.

• Korean Journal of Adult Nursing
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• v.21 no.1
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• pp.23-33
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• 2009

Purpose: The purpose of this study was to examine lifestyle, BMI, BP, and lipids profiles in male subjects and to explore the relationships among variables. Methods: A total of 148 male subjects were recruited from one life insurance company from December 1, 2005 to February 28, 2006. Data collection methods were structured questionnaire, anthropometry and serum analysis. The relationships among lifestyle, BMI, BP, and serum lipid profiles were assessed by descriptive analysis, t-test, ANOVA, and partial Pearson's correlation coefficient of variables after controlling for age, educational level, and economic status. Results: The mean BMI of the participants was relatively high as 25.38(range: 18.38 - 32.83). The differences of serum lipid profiles according to age, educational level, and economic status were significant. 'Use of caffeine and drugs'(r = -.187, p < .05) and 'consciousness of safety'( r= -.200, p < .05) was negatively related to BMI. Higher score of 'type of personality' domain was correlated with lower systolic BP(r = -.221, p < .01) and lower diastolic BP(r = -.195, p < .05) and was positively correlated with HDL(r = .191, p < .05). Conclusion: 'Use of caffeine and drugs', 'consciousness of safety' and 'type of personality' of lifestyle as well as 'dietary habit' and 'exercise' played a key role in circulatory disease.

• Journal of The Korean Society of Grassland and Forage Science
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• v.34 no.3
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• pp.214-218
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• 2014

This study was conducted to assess the feasibility of near-infrared reflectance spectroscopy (NIRS) as a rapid and reliable method for the estimation of crude protein (CP) fractions in forage legume mixtures (sudangrass and pea mixture, and kidney bean and potato mixture). A total of 178 samples were collected and their spectral reflectance obtained in the range of 400~2,500 nm. Of these, 50 samples were selected for calibration and validation, and 35 samples were used for calibration of the data set, and the modified partial least square regression (MPLSR) analysis was performed. The correlation coefficient ($r^2$) and the standard error of cross-validation (SECV) of the calibration models in the CP fractions, A, B1, B2, B3, and C, were 0.94 (1.05), 0.92 (0.74), 0.96 (0.95), 0.91 (0.42), and 0.83 (0.38), respectively. Fifteen samples were used for equation validation, and the $r^2$ and the standard error of prediction (SEP) were 0.87 (1.45), 0.91 (0.49), 0.94 (1.13), 0.36 (0.96), and 0.74 (0.67), respectively. This study showed that NIRS could be an effective tool for the rapid and precise estimation of CP fractions in forage legume mixtures.

• Korean Journal of Remote Sensing
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• v.34 no.4
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• pp.681-692
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• 2018

This study was performed to select the significant wavelengths for predicting the chlorophyll content of grafted cucumber seedlings using hyperspectral images. The visible and near-infrared (VNIR) images and the short-wave infrared images of cucumber cotyledon samples were measured by two hyperspectral cameras. A correlation coefficient spectrum (CCS), a stepwise multiple linear regression (SMLR), and partial least squares (PLS) regression were used to determine significant wavelengths. Some wavelengths at 501, 505, 510, 543, 548, 619, 718, 723, and 727 nm were selected by CCS, SMLR, and PLS as significant wavelengths for estimating chlorophyll content. The results from the calibration models built by SMLR and PLS showed fair relationship between measured and predicted chlorophyll concentration. It was concluded that the hyperspectral imaging technique in the VNIR region is suggested effective for estimating the chlorophyll content of grafted cucumber leaves, non-destructively.

• Journal of Korean Academy of Nursing Administration
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• v.17 no.1
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• pp.22-32
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• 2011

Purpose: The purpose of this study was to identify the effects of intellectual capital in the relationship between social capital and organizational performance in hospital organizations. Methods: A cross-sectional design was used, with a convenience sample of 390 nurses from 3 general hospitals in Gwangju and Chonnam province. Data were collected through a questionnaire survey done from May 1 to 15, 2009. Data was analyzed with descriptive statistics, Pearson correlation coefficient and hierarchial multiple regression using the SPSS WIN 17.0 program. Results: There was a significantly positive relationship between social capital, intellectual capital and organizational performance. Intellectual capital showed partial mediating effects between social capital and organizational performance. However, intellectual capital did not show moderating effects. Conclusion: Accumulated social capital increased intellectual capital and the increased intellectual capital increased organizational performance. This finding suggests that as a contribution to the improvement of organizational performance in hospitals, creation and accumulation of social capital and intellectual capital are very critical.

• Journal of Biosystems Engineering
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• v.43 no.4
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• pp.369-378
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• 2018

Purpose: The aim of this study was to construct a saponin content-predicting model using shortwave infrared imaging spectroscopy. Methods: The experiment used a shortwave imaging spectrometer and ENVI spectral acquisition software sampling a spectrum of 910 nm-2500 nm. The corresponding preprocessing and mathematical modeling analysis was performed by Unscrambler 9.7 software to establish a ginsenoside nondestructive spectral testing prediction model. Results: The optimal preprocessing method was determined to be a standard normal variable transformation combined with the second-order differential method. The coefficient of determination, $R^2$, of the mathematical model established by the partial least squares method was found to be 0.9999, while the root mean squared error of prediction, RMSEP, was found to be 0.0043, and root mean squared error of calibration, RMSEC, was 0.0041. The residuals of the majority of the samples used for the prediction were between ${\pm}1$. Conclusion: The experiment showed that the predicted model featured a high correlation with real values and a good prediction result, such that this technique can be appropriately applied for the nondestructive testing of ginseng quality.

• Journal of The Korean Society of Integrative Medicine
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• v.6 no.4
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• pp.47-61
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• 2018

Purpose : The aim of this study was to test the mediating effect of resilience, self-esteem, and social support on the relationship between the mental health and well-being of high school students. Methods : This structured questionnaire survey was conducted with 409 high school students in G province. The collected data were analyzed using SPSS 20.0 program with descriptive statistics, t-test, ANOVA, Pearson's correlation coefficient, regression analysis and sobel test. Results : As a result, there were significant correlations among mental health, resilience, self-esteem, social support, and well-being. Resilience and social support showed partial mediating effects on the relationship between the mental health and well-being of high school students. Self-esteem showed a fully mediating effect. Conclusion : Therefore, to reduce mental health problems among high school students and to enhance their well-being, it is necessary for schools to develop mental health education programs and to apply effective mental health improvement strategies using resilience, self-esteem, and social support as mediators.

• Journal of East-West Nursing Research
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• v.27 no.1
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• pp.87-93
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• 2021

Purpose: The purposes of this study were to investigate the relationship between stress, spirituality and quality of life and verify the effect of mediating spirituality in the relationship between stress and quality of life among nursing students. Methods: A total of 173 fourth-year nursing students who have experienced clinical practice participated in this study. Data were collected using structured questionnaires to measure the stress, spirituality and quality of life in nursing students from November 9 to December 9 in 2020. Data analysis was conducted using independent t-test, ANOVA, Pearson's correlation coefficient, and mediated regression analysis of Baron and Kenny. Results: The results show that stress were negatively correlated with quality of life (r=-.49, p<.001) and spirituality (r=-.40, p<.001). In addition, spirituality was positively correlated with quality of life (r=.56, p<.001) and had a partial mediation effect on the relationship between stress and quality of life. Conclusion: The results of this study indicate that in order to reduce stress and improve the quality of life of nursing students, it is necessary to actively apply a spirituality promotion program recognizing and developing nursing student's spirituality.

• Korean Journal of Childcare and Education
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• v.17 no.1
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• pp.65-84
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• 2021

Objective: The objective of this study was to investigate the mediating effect of children's emotional intelligence on teacher-child intimacy perceived by children and peer acceptance. Methods: The participants were 134 five-year-old children(71 boys, 63 girls) attending daycare centers and kindergarten in Seoul and Gyeong-nam province. Children were interviewed to measure teacher-child intimacy and peer acceptance. Teachers completed rating scales to measure children's emotional intelligence. Data were analyzed using descriptive statistics, Pearson's correlation coefficient, three step mediated regression analysis and a Sobel test. Results: The main results are as follows. first, there were significant positive correlations of teacher-child intimacy, emotional intelligence, and children's peer acceptance. Second, children's emotional intelligence had a partial mediating effect on teacher-child intimacy and peer acceptance. Conclusion/Implications: The results of this study demonstrates links between early teacher-child relationships and children's emotional and social development. In order to promote children's peer acceptance, it is necessary to build an intimate teacher-child relationship and to improve children's emotional intelligence based on that relationship.

• The Journal of Korean Academic Society of Nursing Education
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• v.27 no.1
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• pp.80-90
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• 2021

Purpose: This study aimed to investigate nursing students' learning agility and confirm the mediating effect of self-leadership in the relationship between achievement motivation and learning agility. Methods: The study design was a descriptive survey design. The subjects were third- and fourth-year nursing students attending three universities in one region. Data were collected from November 28, 2019, to May 25, 2020, and a total of 202 data were collected using the scale of achievement motivation, self-leadership, and learning agility. Data analysis included frequency analysis, descriptive statistics, and Pearson's correlation coefficient using SPSS 25.0 statistics 25.0 software. The mediating effect of self-leadership was analyzed through regression analysis and bootstrapping using process macro ver. 3.4.1. Results: Self-leadership's partial mediating effect was confirmed in achievement motivation and learning agility. Achievement motivation was found to affect directly learning agility, with an indirect effect through self-leadership. Conclusion: The study results showed that nursing students could increase their learning agility through self-leadership improvement. Future research should focus on identifying the factors influencing nursing students' learning agility and develop and apply programs to improve learning agility.