• Journal of Korean Society of Coastal and Ocean Engineers
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• v.13 no.4
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• pp.296-308
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• 2001

A fully nonlinear Boussinesq equation of Wei et al. is finite differenced by Adams predictor-corrector method. A spatially distributed source function and sponge layers are used to reduce the reflected waves in the domain and wale breaking mechanism is included in the equation. The generated waves are found to be good and the corresponding wale heights are very close to the target values. The shoaling of solitary wave and transformation of regular wave over submerged shelf were simulated successfully. The characteristics of breaking mechanism was identified through the numerical experiment and the results of two dimensional wave propagation test over the spherical shoal showed the importance of nonlinear wave model.

• Journal of Korean Academy of Nursing
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• v.12 no.2
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• pp.31-44
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• 1982

The purpose of this study was to analyze the relationship between maternal attachment and discharge against advice in high risk infants and determine the factors which affect discharge against advice. Data of this study were collected by means of reviewing the medical records of 127 in-patients who were diagnosed as high risk infants in admission and interviewing of the mothers of these patients was done by telephone. The high risk categories were neonatal hyperbilirubinemia, congenital anomaly, congenital heart disease, blood disorder, neonatal infection and birth injury. Maternal attachment was measured by deviding the subjects into 2 groups, the one the continuing treatment group and the other the discharge against advice group. Maternal attachment is determined by an interplay of maternal attitude and specific infant behaviors. Maternal attachment developes through continuous physical and psychological contact between mother and infants. Later it developes into maternal love. The results were as follows: 1. There was a significant association between maternal attachment and discharge against advice, that is, the attachment score was higher in the continuing treatment group. 2. Inspite of controlling medical insurance, severity of disease and the length of stay, it was found that there continued to be either a partially significant or fully significant relationship between maternal attachment and discharge against advice. Stepwise multiple regression revealed that maternal attachment was second in importance as a predictor of discharge against advice, which indicates that maternal attachment was a significant predictor of discharge against advice. 3. Stepwise multiple regression revealed that in 32.3％ of these cases the significant predictors of discharge against advice were length of stay, maternal attachment, delivery type, feeding type and income.

• Korean Journal of Agricultural and Forest Meteorology
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• v.21 no.2
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• pp.75-84
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• 2019

In this study, the random forest approach was used to predict the national mean rice yield of South Korea by using mean climatic factors at a national scale. A random forest model that used monthly climate variable and year as an important predictor in predicting crop yield. Annual yield change would be affected by technical improvement for crop management as well as climate. Year as prediction factor represent technical improvement. Thus, it is likely that the variables of importance identified for the random forest model could result in a large error in prediction of rice yield in practice. It was also found that elimination of the trend of yield data resulted in reasonable accuracy in prediction of yield using the random forest model. For example, yield prediction using the training set (data obtained from 1991 to 2005) had a relatively high degree of agreement statistics. Although the degree of agreement statistics for yield prediction for the test set (2006-2015) was not as good as those for the training set, the value of relative root mean square error (RRMSE) was less than 5%. In the variable importance plot, significant difference was noted in the importance of climate factors between the training and test sets. This difference could be attributed to the shifting of the transplanting date, which might have affected the growing season. This suggested that acceptable yield prediction could be achieved using random forest, when the data set included consistent planting or transplanting dates in the predicted area.

• Journal of Families and Better Life
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• v.22 no.2
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• pp.13-21
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• 2004

This study examined the role of maternal attribution in parenting behaviors of mothers who have a child with developmental disabilities. Using an attributional model, it assessed whether maternal attributions about the child's knowledge, capacity, expectation, and responsibility for behavior problems have effects on maternal behaviors of affect, authoritarian control, and overprotect. The sample consisted of 161 mothers of elementary children with developmental disabilities. Multivariate regression analysis revealed that maternal attribution about the child's capacity for misbehavior had positive influence on maternal affect and negative influence on authoritarian control behaviors, and that maternal attribution of responsibility for misbehavior positively influenced maternal authoritarian control and overprotect behaviors. Also, maternal attribution about the child's knowledge for misbehavior had negative influence on maternal overprotect behaviors. In addition, such background factors as number of disability, maternal education, and job of mother were significant predictors for maternal attribution, while maternal self-esteem was a strong significant predictor for mothering behaviors. The findings suggest the importance of maternal attributions in parenting.

• Korean Management Science Review
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• v.11 no.2
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• pp.133-146
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• 1994

This study compares the performance of neural networks and ordinary least squares regression with quality-control processes. We examine the applicability of neural networks because they do not require any assumptions regarding either the functional from of the underlying process or the distribution of errors. The coefficient of determination($R^2$), mean absolute deviation(MAD), and the mean squared error(MSE) metrics indicate that neural networks are a viable and can be a superior technique. We also demonstrate that an assessment of the magnitude of the neural notwork input layer cumulative weights can be used to determine the relative importance of predictor variables.

• Journal of Korean Academy of Nursing Administration
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• v.15 no.4
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• pp.515-526
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• 2009

Purpose: The purpose of this study was to investigate the role of Self-efficacy and Social Support in the emotional labor among hospital nurses. Method: Data was collected from 389 nurses in 3 general hospitals by means of structured questionnaires. Data was analyzed with descriptive statistics, Pearson's correlation coefficient and hierarchial multiple regression using the SPSS 14.0 program. Result: (a) self-efficacy of hospital nurses had no significant moderating and mediating effects between emotional labor and burn out, turn over intention. (b) Social support of hospital nurses had significant mediating effects between emotional labor and burn out, turn over intention. However, social support did not show moderating effects. Conclusion: Social support was a more important predictor of emotional labor than self-efficacy of hospital nurses. This finding suggests the importance of social support to increase hospital nurses psychological well-being and development of organization.

• Journal of the Korean Home Economics Association
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• v.27 no.2
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• pp.149-162
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• 1989

Based on attachment theory and family system theory, this study was attempted to construct a path model in which showed how adult son-mother relationship and mother's marital relationship influence son's marital satifaction. Predictor variables examined were the attachment between mother and married son, mother's dependency, mother's marital relationship, son's filial obligation, son's marriage years. Data were analyzed from survey and structured interviews conducted with 111 families including married son, his wife and his mother. Results indicated that the attachment between mother and married son influenced directly to son's marital satisfaction while the other variables had an indirect influence via the attachment between mother and son. The importance of the relationship between mother and married son to son's marital satisfaction received string support.

• Asian-Australasian Journal of Animal Sciences
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• v.24 no.3
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• pp.429-438
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• 2011

Mastitis is characterized by physical, chemical and bacteriological changes in the milk and pathological changes in the glandular tissue of the udder and affects the quality and quantity of milk. The bacterial contamination of milk from the affected cows render it unfit for human consumption and provides a mechanism of spread of diseases like tuberculosis, sore-throat, Q-fever, brucellosis, leptospirosis etc. and has zoonotic importance. Somatic cell count (SCC) is a useful predictor of intramammary infection (IMI) that includes leucocytes (75%) i.e. neutrophils, macrophages, lymphocytes, erythrocytes and epithelial cells (25%). Leucocytes increase in response to bacterial infection, tissue injury and stress. Somatic cells are protective for the animal body and fight infectious organisms. An elevated SCC in milk has a negative influence on the quality of raw milk. Subclinical mastitis is always related to low milk production, changes to milk consistency (density), reduced possibility of adequate milk processing, low protein and high risk for milk hygiene since it may even contain pathogenic organisms. This review collects and collates relevant publications on the subject.

• Survey Research
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• v.12 no.2
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• pp.159-173
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• 2011

The goal of this study is to identify and compare predictors of smoking initiation, persistence and smoking status among Hispanics and Whites. The sample includes 1,410 Hispanic and non-Hispanic White adults living in El Paso, TX, USA and Do$\tilde{n}$a Ana and Otero counties, NM, USA from the Paso del Norte 2002 BRFSS. Whites reported higher rates of cigarette smoking and became regular smokers earlier than Hispanics. Males were twice more likely to initiate cigarette smoking and progress to regular smoking than females among Hispanics, but this gender difference among Whites was not significant. Childhood exposure to drinkers or alcoholics was an important predictor of smoking initiation and becoming a regular smoker, but only among Hispanics. Few identified ethnic differences in predictors of smoking were found. The findings underscore the importance of Hispanic norms on smoking behaviors. Prevention efforts need to address the culture as one of the important components relevant to smoking.

• International Journal of Human Ecology
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• v.10 no.2
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• pp.13-24
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• 2009

The effects of grandparenting involvement and emotional attachments on emotional and behavioral development among adolescents were explored through the use of a UK cross-sectional national data of 1,566 adolescents aged eleven to sixteen years old receiving some form of grandparenting. A correlation and logistic regression analyses yielded results that supported the positive effects of grandparenting on the emotional and behavioral disorder symptoms of adolescents. The results indicate that most selected socio-demographic, grandparenting involvement, and the emotional attachment variables of grandchildren influenced the likelihood of increasing or decreasing emotional disorder symptoms among adolescents. However, no support was found for perceiving emotional attachments with grandparents as a predictor of behavioral disorder symptoms among youth, whereas socio-demographic and grandparenting involvement variables showed significant impacts on behavioral disorder symptoms. The findings highlight the importance of a systematic approach about the socio-demographic characteristics, levels of grandparenting, and emotional attachment levels with grandparents to understand youth cared for by grandparents that experience emotional and/or behavioral disorder symptoms, when intervention or prevention programs are considered.