• 한국생활과학회지
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• 제20권3호
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• pp.611-623
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• 2011

The purpose of this study was to investigate young children's play preferences through observation at their classrooms and to examine the relationship between children's play preferences and their peer competence and peer acceptance. The subjects were 55 four-year-old children from a kindergarten in C city of Chungnam province. The data was analyzed by MANOVA, t-test, and Pearson's correlation. The results were as follows: first, boys and girls showed different play preferences except for language play and science play. Boys were better liked by same-sex peers while girls were better liked by other-sex peers. Second, there were significant correlations among certain play preferences. Block play preferences were negatively correlated with other play preferences. Third, some play preferences were significantly associated with some sub-dimensions of peer competence. Language play displayed a positive relationship to pro-social behavior, but art play showed a negative relationship to leadership. Finally, peer acceptance was positively correlated only with number/manipulation play preferences. Other-sex peer acceptance was positively correlated with number/manipulation play preferences and art play preferences but negatively with block play preferences.

• 약학회지
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• 제46권1호
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• pp.63-68
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• 2002

The purpose of this study was to estimate the population pharmacokinetics of clarithromycin in healthy adult Korean and to investigate the factors influencing the pharmacokinetics of clarithromycin. The population pharmacokinetic parameters of clarithromycin were calculated with the data from healthy adult Koreans. A total of 798 plasma concentrations obtained from 78 subjects after administration of a single oral dose of 250 mg or 500 mg were used for the modeling. The concentration-time data were fitted to a one-compartment open model assuming a first-order absorption and elimination with no lag time. The correlations between various factors [such as sex, age, height, weight, sect creatinine (Scr) and dose and pharmacokinetic parameters were estimated with stepwise linear recession analyses. The selected covariates were incorporated in the population model of NONMEM, and the importance of each covariate was investigated by means of backwards elimination. The apparent clearance (CL/F) was significantly correlated to Scr and sex, and the apparent volume of distribution (Vd/F) was significantly correlated to Scr and height in a nonlinear relationship. The population values of Ka was 1.8 h $r_{-1}$, CL/F was 37.71 L/hr, Vd/F was 200 L and t/ sub 1/2 / was 3.68 hrs for a male Korean with 170 m height and 1.0 mg/dL Scr.

• 아동학회지
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• 제33권5호
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• pp.139-161
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• 2012

The purpose of this study was to analyze the relationships of mothers' parenting stress and young children's adjustment to the child care centers they attend. The subjects for this study comprised 401 young children from 1 to 4 years of age from 11 child care centers in C-si, Chungnam, and their mothers. The results of this study were as follows : First, there were no significant differences in the parenting stress of mothers related to whether they were working or not, the age of the children nor their gender Second, there were no significant differences in the adjustment of young children to their child care center related to their mothers' work status nor age of the children themselves. However, there was a significant difference in relation to the gender of the young children in that girls were better in their adjustment to the child care center than boys. Third, a negative correlation appeared between mothers' parenting stress and their young children's adjustment to the child care center in that the higher maternal parenting stress was, the greater the difficulties for their young children in their adjustment to the child care center. There were significant negatively correlations between most sub-factors of maternal parenting stress and the adjustment of those children to the child care center.

• 아동학회지
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• 제35권6호
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• pp.47-64
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• 2014

This study was conducted with the aim of examining the acculturation process of children and parents from multicultural families, which can affect the self-esteem of the children concerned. The participants from each family consisted of the fathers, mothers, and school-age children of 179 households. The results of this study reveal the following: (1) First, the multicultural children scored higher than the average in self-esteem in most areas except school life. Furthermore, the children and parents had a comparatively positive attitude toward acculturation (2) Second, the children's level of self-esteem had significant correlations only with the acculturation of mothers as opposed to fathers. (3) Third, the impacts of acculturation of the children and their parents on the children's self-esteem followed different patterns according to the sub-areas of self-esteem. Specifically, the self-esteem for overall self-value and family relations rose when the multicultural acceptance attitude of mothers was high. However, area of peer relations was affected only by the acculturation of children. The area concerning school life was high when the mother-culture propagation attitude of mothers was low.

• 근관절건강학회지
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• 제26권3호
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• pp.251-260
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• 2019

Purpose: The purpose of this study was to investigate the relationships between resilience, job satisfaction, and job stress among nurses working at general hospitals. Methods: This study was a descriptive study using a questionnaire. The resilience scale, satisfaction scale and job stress scale were used. The data from 194 infection control nurses, who work for below 3 years at general hospitals, were collected from March 2 to September 30, 2017. Data were analyzed using SPSS 22.0 Win program. Results: In this study, job stress showed significant negative correlations with resilience (r=-.14, p=.043) and job satisfaction (r=-.50, p<.001). However, there was a significant positive correlation with infection control experience (r=.32, p<.001). Also, the level of job requirement stress and job autonomy stress scored higher than other sub-dimension of job stress. Job satisfaction was the most significant predictor (β=-.43, p<.001) in job stress. Conclusion: The findings of this study suggest that systematic training courses and education programs for new infection control nurses should be developed to decrease nurses' job stress and increase their resilience. Holding this program can help reduce nursing job stress and help to adapt individuals to existing changes.

• Nuclear Engineering and Technology
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• 제31권4호
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• pp.375-384
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• 1999

The credibility of CHECWORKS FAC model analysis was evaluated for plant application in a model plant chosen for demonstration. The operation condition at each pipe component was defined before the wear rate analysis by plant data base, water chemistry analysis, and network flow analysis. The predicted wear was compared with the measured wear for 57 sample components selected from 43 susceptible line groups analysed. The inspected 57 locations represent components of highest predicted wear in each line group. Both absolute value and relative ranking comparisons indicated reasonable correlations between the predicted and the measured values. Four components showed much higher measured wear rates than the predicted ones in the feed water train from main feed water pump discharge to steam generator, probably due to high hydrazine concentration operation the effect of which had not been incorporated into the CHECWORKS model. The measured wear was higher than the predicted one consistently for components with least susceptibility to FAC. It is believed that the conservatism maintained during UT data analysis dominated the measurement accuracy. A great deal of enhancement is anticipated over the current plant pipe management program when a comprehensive plant pipe management program is implemented based on the model analysis.

• Child Health Nursing Research
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• 제11권1호
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• pp.90-98
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• 2005

Purpose: To provide basic information for developing a nursing program by examining health risk behavior of students rewriting college entrance examinations. Method: Data were gathered using questionnaires from 804 examinees in Seoul and Gyeonggi Province and analyzed with the SAS program using t-test, ANOVA, Scheffe's test, and Pearson correlation coefficients. Results: The mean score for health risk behaviors was 17.70 and the highest score for sub-areas of health risk behavior was drinking alcohol while substance use ranked lowest. There were significantly different scores for health risk behavior according to the following general characteristics; frequency of rewriting college entrance examinations, parents' marital status, level of father's education, grades, satisfaction with rewriting of college entrance examinations, parents' health concerns, need for health education and health status. Each behavior had positive or negative correlation with more than one other behavior. A negative correlation was found between health risk behavior and family support and self-esteem, while positive correlations were found between health risk behavior and general stress, studying stress and anxiety. Conclusion: This study suggest that these results be used to developed a prevention program to decrease health risk behaviors by promoting family support and self esteem and decreasing stress and anxiety.

• Wind and Structures
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• 제11권3호
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• pp.221-240
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• 2008

The spanwise flow structure around a rigid smooth circular cylinder model in cross-flow has been investigated based on the experimental data obtained from a series of wind tunnel tests. Surface pressures were collected at five spanwise locations along the cylinder over a Reynolds number range of $1.14{\times}15^5$ to $5.85{\times}10^5$, which covered sub-critical, single-bubble and two-bubble regimes in the critical range. Separation angles were deduced from curve fitted to the surface pressure data. In addition, spanwise correlations and power spectra analyses were employed to study the spatial structure of flow. Results at different spanwise locations show that the transition into single-bubble and two-bubble regimes could occur at marginally different Reynolds numbers which expresses the presence of overlap regions in between the single-bubble regime and its former and later regimes. This indicates the existence of three-dimensional flow around the circular cylinder in cross-flow, which is also supported by the observed cell-like surface pressure patterns. Relatively strong spanwise correlation of the flow characteristics is observed before each transition within the critical regime, or formation of first and second separation-bubbles. It is also noted that these organized flow structures might lead to greater overall aerodynamic forces on a circular cylinder in cross-flow within the critical Reynolds number regime.

• 한국지역사회생활과학회지
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• 제23권1호
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• pp.5-16
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• 2012

The purpose of this study was to examine the impact of parenting stress on children's problematic behavior in multicultural families. The subjects were 143 mothers who are caring for their 3-6 year old children in multicultural families. Data was collected using a parenting stress index and a child behavior check list. The data were statistically analyzed using a t-test, a one-way ANOVA(Scheff'e test), a correlation analysis and multiple regression analysis. The study showed that there were no significant differences in parenting stress according to the socio-demographic variables. However, there were some significant differences in children's problematic behavior according to the mother's education. Correlation analysis indicated that the mother's parenting stress and children's problematic behavior in multicultural families had significant positive correlations in all sub-variables. It was also found that the mother's education, the mother's stress caused by a difficult child, the mother's stress caused by dysfuntional interactions between parents and children and educational distress, were all significant predictors of the preschool children's problematic behavior in multicultural families.

• 한국작물학회지
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• 제27권2호
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• pp.99-106
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• 1982

본 연구는 1978년 국제연락수도내랭성검정시험(IRCTN) 계획에 따라 237품종을 10개지역에 공시하여 한국의 춘천 내랭성검정포에서의 수도생육기간과 타지역에서의 생육기간과의 비교분석하여 수도품종의 출수성에 대한 지역감의 관계를 알기 위하여 실시하였다. 1. 춘천과 타지역간의 수도생육기간은 모두 높은 정의 상관관계를 보였는데 일장반응이 예민한 품종들은 예외적인 반응을 보였다. 2. 타지역에서 생육기간이 짧았던 품종이 춘천에서도 동일한 경향을 보일 수 있는 확율은 63-72%였는데 이는 춘천이 타지역보다 생육기간중의 일장이 길기 때문이었다. 3. 춘천에서 생육기간이 짧은 품종을 병발하여 위도가 낮은 지역에 보내면 일장반응에 의하여 생육기간이 짧았던 품종들이 제외되는 결과를 가져오며 내랭성을 동시에 검정할 수 있기 때문에 육종효과를 증대시킬 수 있을 것이다.