• Journal of Korean Academy of Nursing
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• v.34 no.5
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• pp.781-790
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• 2004

Purpose: The purpose of this study was to develop a model of an elderly health promotion center after witnessing the effect of a social support program on dependent variables in older adults at a local community health center. Method: The subjects were 60 female adults over 65 years dwelling in a rural area, and they were divided into experimental and control groups each with 30 people. A social support program was implemented 6 hours a day, 3 times a week, for 4 months in the experimental group. Included was health assessment, health education, counseling, consultation, exercise, physical & occupational therapy, primary care, recreation, lunch & transfer service. Data was collected from May 1stto September 14th, 2002 by questionnaires, and analyzed by $x^2$-test, t-test, Pearson's correlation coefficient and stepwise multiple regression using SAS. Result: The social support program in the elderly was very effective on all dependent variables of physical health (t=4.68, p=.001), health knowledge (t=3.60, p=.001), life satisfaction (t=8.65, p=.001), and health promoting behaviors (t=5.23, p=.001). Conclusion: The Social Support Program at a Community Health Center was effective on health promoting behaviors in the elderly.

• Journal of Families and Better Life
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• v.17 no.1
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• pp.45-56
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• 1999

The purpose of this study was to look into correlations between subjective evaluation on the work and self-esteem of the elderly so as to provide information for finding out ways of developing their self-esteem. The subjects of this study were 318 elderly persons in Chonnam and Kwangju city. The statistics used for data analysis were frequency percentage mean standard deviation reliability stepwise and multiple regression analysis through the SAS package program. the major findings of this study can be summarized as follows; 1) The self-esteem of elderly persons was 25,9 which was above the median 24. 2) According to the results related to subjective evaluations on the work among the elderly the positive correlation was by education level family situation economic state social activity level and health state while the negative correlation was by sex, age, and spouse. 3) According to the results related to subjective evaluations on the work among the elderly the positive correl tion was by worker identity job satisfaction quality of work time. 4) In model 1. variable affecting their self-esteem were health sate education level economic state health state age social activity level and sex. In Model 2, variables affecting their self-esteem were worker identity education level economic state age health state social activity level job satisfaction and sex. Especially self-estee of elderly was highly correlated with subjective evaluations on the work among the elderly persons.

• Journal of Biosystems Engineering
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• v.29 no.1
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• pp.59-64
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• 2004

This study was performed to determine drying equations of sarcodon aspratus. Drying tests for sarcodon aspratus were conducted in an experimental dryer equiped with an air conditioning unit. The drying tests were performed at three air temperatures of 30$^{\circ}C$, 40$^{\circ}C$ and 50$^{\circ}C$, and two relative humidities of 30% and 50%. Measured moisture ratio data were fitted with the selected four drying models(Page, Thompson, Lewis and simplified diffusion models) using stepwise multiple regression analysis. When the coefficients of determination and root mean square errors of moisture ratio were evaluated for four drying models, the Page model was found to fit adequately to all the drying test data with coefficient of determination of 0.9996 and RMSE of 0.00523.

• Journal of Korean Academy of Fundamentals of Nursing
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• v.25 no.3
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• pp.155-164
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• 2018

Purpose: The purpose of this study was to identify the influences of health beliefs on fall prevention behavior among adult patients who had abdominal surgery. Methods: Data were collected from 136 patients who had undergone an abdominal surgery within the past 5 days. The data collection period was from September 21 to October 25, 2017. The health belief measurement tool, modified and reviewed by experts, and the fall prevention guideline developed by the Korean Nurses Association and revised by Park were used. Data were analyzed using descriptive statistics, t-test, ANOVA, Pearson correlation and stepwise multiple regression analysis. Results: The Health Belief Model explained 45.7% of the variance in fall prevention behavior among adult patients who had abdominal surgery. Perceived susceptibility and perceived benefits had significant influence on fall-prevention behavior. Conclusion: Tailored educational programs which put emphasis on the perceived susceptibility and perceived benefits of fall prevention need to be developed.

• Journal of Korean Biological Nursing Science
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• v.21 no.2
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• pp.108-113
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• 2019

Purpose: The purpose of this study was to investigate the difference in serum ferritin and leukocyte regarding overweight and obese South Korean adults. Methods: This study was conducted on 5,281 subjects older than 19, according to data from the Fifth Korea National Health and Nutrition Examination Survey (KNHANES V-3), 2015. Data were analyzed using descriptive statistics, t-test, ANOVA, Scheffe's test, Pearson's correlation coefficient, and stepwise multiple regression analysis (SPSS 24.0). Results: First, serum ferritin and leukocyte were higher regardubg obesity, followed by being overweight and within normal weight. Second, body mass index (BMI) was positively correlated with serum ferritin and leukocyte. Third, factors affecting serum ferritin were gender, and being obese and overweight. Explanatory power of the model was 26.2%. Factors affecting leukocyte were gender, obesity, being overweight, and weight change over the past year (weight gain). Explanatory power of the model was 10.2%. Conclusion: Obesity and being overweight were factors affecting serum ferritin and leukocyte, and obesity was more affected than being overweight in Koreans older than 19. In conclusion, serum ferritin was a marker of inflammation, rather than iron status, in overweight and obese Korean adults.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.47 no.5
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• pp.390-394
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• 2002

Spikelet number per unit area(SPN) is a major determinant of rice yield. Nitrogen nutrition status and biomass during reproductive stage determine the SPN. To formulate a model for estimating SPN, the 93 field experiment data collected from widely different regions with different japonica varieties in Korea and Japan were analyzed for the upper boundary lines of SPN responses to nitrogen nutrition index(NNI), shoot dry weight and shoot nitrogen content at panicle initiation and heading stage. The boundary lines of SPN showed asymptotic responses to all the above parameters(X) and were well fitted to the exponential function of $f(X)=alphacdot{1-etacdotexp(gamma;cdot;X)}$. Excluding the constant, from the boundary line equation, the values of the equation range from 0 to 1 and represent the indices of parameters expressing the degree of influence on SPN. In addition to those indices, the index of shoot dry weight increase during reproductive stage was calculated by directly dividing the shoot dry weight increase by the maximum value ($800 extrm{g/m}^{-2}$) of dry weight increase as it showed linear relationship with SPN. Four indices selected by forward stepwise regression at the stay level of 0.05 were those for NNI ($I_{NNI}_P$) at panicle initiation, NNI($I_{NNI}_h$) and shoot dry weight($I_{DW}_h$) at heading stage, and dry weight increase($I_{DW}$) between those two stages. The following model was obtained: SPN=48683ㆍ $I_{DWH}$$^{0.482}$ㆍ $I_{NNIp}$$^{0.387}$ㆍ $I_{NNIH}$$^{0.318}$ㆍ $I_{DW}$ $^{0.35}$). This model accounted for about 89% of the variation of spikelet number. In conclusion this model could be used for estimating the spikelet number of japonica rice with some confidence in widely different regions and thus, integrated into a rice growth model as a component model for spikelet number estimation.n.n.

• Asian-Australasian Journal of Animal Sciences
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• v.25 no.12
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• pp.1674-1680
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• 2012

The purpose of this study was to detect significant SNPs for blood components that were related to immunity using high single nucleotide polymorphism (SNP) density panels in a Korean native pig (KNP)${\times}$Yorkshire (YK) cross population. A reciprocal design of KNP${\times}$YK produced 249 $F_2$ individuals that were genotyped for a total of 46,865 available SNPs in the Illumina porcine 60K beadchip. To perform whole genome association analysis (WGA), phenotypes were regressed on each SNP under a simple linear regression model after adjustment for sex and slaughter age. To set up a significance threshold, 0.1% point-wise p value from F distribution was used for each SNP test. Among the significant SNPs for a trait, the best set of SNP markers were determined using a stepwise regression procedure with the rates of inclusion and exclusion of each SNP out of the model at 0.001 level. A total of 54 SNPs were detected; 10, 6, 4, 4, 5, 4, 5, 10, and 6 SNPs for neutrophil, lymphocyte, monocyte, eosinophil, basophil, atypical lymph, immuno-globulin, insulin, and insulin-like growth factor-I, respectively. Each set of significant SNPs per trait explained 24 to 42% of phenotypic variance. Several pleiotropic SNPs were detected on SSCs 4, 13, 14 and 15.

• Proceedings of the Korean Society of Near Infrared Spectroscopy Conference
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• 2001.06a
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• pp.1614-1614
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• 2001

The sweetness (。Bix) of fruit is the main quality factor contributing to the fruit taste. The brix of the apple fruit can be measured non-destructively by near infrared (NIR) spectroscopy, allowing the sweetness grading of individual apple fruit. However, the fruit quality is influenced by various factors such as growing location, producing year, variety and harvest time etc., accordingly the robust NIR calibration is required. In this experimental results are presented the influence of two variations such as growing location and producing year of apple fruit in establishing of calibrations for sweetness, and developed a stable and highly accurate calibration. Apple fruit (Fuji) was collected every year from 1995 to 1997 in 3 different growing locations (Andong, Youngchun and Chungsong) of Kyungpook in Korea. NIR reflectance spectra of apple fruit were scanned in wavelength range of 1100∼2500nm using an InfraAlyzer 500C (Bran+Luebbe) with halogen lamp and PbS detector. The multiple linear regression and stepwise was carried out between the NIR raw spectra and the brix measured by refractometer to select the best regression equations. The calibration models by each growing district were well predicted to dependent sample set, but poorly predicted to independent sample set. Combined calibration model using data of three growing districts predicted reasonable well to a population set drawn from all growing districts(SEP = 0.69%, Bias=-0.075). The calibration models by each harvest year were not transferable across harvest year, however a combined calibration model using data of three harvest years was sufficiently robust to predict each sample sets(SEP = 0.53%, Bias = 0.004).

• The Journal of Korean Physical Therapy
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• v.25 no.5
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• pp.330-336
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• 2013

Purpose: Respiratory is an essential vital component for conservation of life in human, which is controlled by respiratory muscles and its related neuromuscular regulation. The purpose of this study is to assess lung capacity and respiratory pressure in healthy children, and to investigate relationship and predictability between respiratory pressure and other related respiratory functions. Methods: A total of 31 healthy children were recruited for this study. Demographic information and respiratory related factors were assessed in terms of body surface area (BSA), chest mobility, lung capacity, and respiratory pressure. Correlation between respiratory pressure and the rested variables was analyzed, and multiple regression using the stepwise method was performed for prediction of respiratory muscle strength, in terms of respiratory pressure as the dependent variable, and demographic and other respiratory variables as the independent variable. Results: According to the results of correlation analysis, respiratory pressure showed significant correlation with age (r=0.62, p<0.01), BSA (r=0.80, p<0.01), FVC (r=0.80, p<0.01), and FEV1 (r=0.70, p<0.01). In results of multiple regression analysis using the backward elimination method, BSA and FVC were included as significant factors of the predictable statistical model. The statistical model showed a significant explanation power of 71.8%. Conclusion: These findings suggest that respiratory pressure could be a valuable measurement tool for evaluation of respiratory function, because of significant relationship with physical characteristics and lung capacity, and that BSA and FVC could be possible predictable factors to explain the degree of respiratory pressure. These findings will provide useful information for clinical assessment and treatment in healthy children as well as those with pulmonary disease.

• The Korean Journal of Health Service Management
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• v.13 no.3
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• pp.163-172
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• 2019

Objectives: With the rapidly increasing incidence of cancer worldwide, it has become important for health care professionals to both provide care for cancer patients and to address the challenges faced by family caregivers of cancer patients. This study aims to identify the factors affecting depression among cancer patients' family caregivers. The results of this study suggest the need to propose programs for family caregivers as well as cancer patients. Methods: Participants were 219 caregivers who were informed of the study purpose and agreed to participate. Data were analyzed using t-tests, one-way ANOVA, Scheffe's test, Pearson correlation coefficients, and multiple stepwise regression with the SPSS/WIN 25.0 program. Results: The mean score for depression among cancer patients' family caregivers was $1.57{\pm}.40$ (range: 0-3). Depression was significantly different based on age, relationship with the patient, education, occupation, cancer recurrence, care days per week, financial burden, site of cancer, and health status. Analysis using multiple regression showed that model 1 showed 16% of the factors predicting depression among cancer patients' family caregivers (F=6.16, p<.001) including occupation, recurrence, and health status of the caregiver. Model 3, which included additional burnout, showed 37% of the factors predicting depression (F=12.36, p<.001). Conclusions: These results suggest that it is necessary to develop programs for prevention and management of depression among cancer patients' family caregivers.