• Clinical and Experimental Pediatrics
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• v.55 no.11
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• pp.414-419
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• 2012

Purpose: This study aimed to assess early development in very low birth weight (VLBW) infants with mild intraventricular hemorrhage (IVH) or those without IVH and to identify the perinatal morbidities affecting early neurodevelopmental outcome. Methods: Bayley Scales of Infant Development-II was used for assessing neurological development in 49 infants with a birth weight <1,500 g and with low grade IVH (${\leq}$grade II) or those without IVH at a corrected age of 12 months. Results: Among the 49 infants, 19 infants (38.8%) showed normal development and 14 (28.6%) showed abnormal mental and psychomotor development. Infants with abnormal mental development (n=14) were mostly male and had a longer hospitalization, a higher prevalence of patent ductus arteriosus (PDA) and bronchopulmonary dysplasia (BPD), and were under more frequent postnatal systemic steroid treatment compared with infants with normal mental development (n=35, P<0.05). Infants with abnormal psychomotor development (n=29) had a longer hospitalization and more associated PDA compared to infants with normal psychomotor development (n=20, P<0.05). Infants with abnormal mental and psychomotor development were mostly male and had a longer hospitalization and a higher prevalence of PDA and BPD compared to infants with normal mental and psychomotor development (n=19, P<0.05). Using multiple logistic regression analysis, a longer duration of hospitalization and male gender were found to be significant risk factors. Conclusion: Approximately 62% of VLBW infants with low grade IVH or those without IVH had impaired early development.

• The Journal of Korean Academic Society of Nursing Education
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• v.18 no.1
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• pp.95-101
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• 2012

Purpose: This study aimed to analyze the impact of advanced maternal and paternal age on perinatal outcome in Korea. Methods: We conducted a retrospective study involving 1,622 Korean women who delivered at M Woman Hospital from January to December 2010 and their spouses were included. We obtained obstetrics database which included demographic characteristics, medical and obstetrics history, course of the current pregnancy and advised perinatal outcome. Multivariable logistic regression was used to adjust for potential confounding variables. Results: Women giving birth age 35 or older were statistically significant in paternal age, gravidity, spontaneous abortion experience, method of conception, method of delivery, and multiple gestation compared to women aged <34 years. After adjusting for the confounding effects of maternal characteristics, women aged 35 or older were at increased risk for cesarean section delivery (adjusted OR 1.6, 95% CI 1.22-2.13) and preterm birth (adjusted OR 2.2, 95% CI 1.03-4.63). Conclusion: In this population of Korean women, advance maternal and paternal age is independently associated with specific adverse perinatal outcome, especially preterm birth and cesarean section delivery.

• Asian-Australasian Journal of Animal Sciences
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• v.10 no.6
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• pp.614-620
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• 1997

Pedigree data were used to predict the performance of 1,166 imported Americas Brahman breeder cattle, composed of 104 bulls and 1,062 heifers with an average age of 24.4 months (range of 17 to 40 months). A total of 13 full sib, 10 maternal half sib, and 228 paternal half sib groups were identified, each with average group size of 2.08, 2.00, and 4.49, respectively. Only 758 (64.9% of total) imported cattle were found to have at least one ancestor with expected progeny differences (EPDs) reported in the Spring 1995 Brahman Sire Summary. Moderate average accuracy values of .71, .69, .52, and .52 for birth weight, weaning weight, yearling weight, and maternal milk, respectively, were noted for EPDs of the ancestors. Prediction equations were derived by multiple regression analysis of available EPDs of sire, paternal grand sire, and maternal grand sire. Based on pedigree indexes that involve various combinations of available ancestral information, the average predicted EPDs (lbs) for imported cattle were $1.76{\pm}0.54$, $14.93{\pm}4.86$, $25.10{\pm}9.50$, and $5.86{\pm}2.08$ for birth weight, weaning weight, yearling weight, and maternal milk, respectively. Significant correlations (p < .05) were also found between sire and son EPDs (+.27) for yearling weight; and between sire and paternal grand sire EPDs for birth weight (+.34), weaning weight (+.51), yearling weight (+.49), and maternal milk (+.55).

• Child Health Nursing Research
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• v.26 no.2
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• pp.267-276
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• 2020

Purpose: Caring for a vulnerable premature baby is a challenging task, but some mothers experience growth through that process. The purpose of this study was to investigate the factors influencing post-traumatic growth in mothers with premature infants admitted to the neonatal intensive care unit. Methods: A correlational research design was used and 105 mothers of premature infants were recruited from an online community. Data were collected from January 15 to January 25, 2019. Post-traumatic growth was measured using the Korean version of the Posttraumatic Growth Inventory. Data were analyzed using descriptive statistics, the t-test, analysis of variance, the Scheffé test, Pearson correlation coefficients, and hierarchical multiple regression. Results: The final model developed in this study explained 45.5% of post-traumatic growth (F=13.66, p<.001). Resilience (β=.54, p<.001) was the strongest predictor of post-traumatic growth, followed by the age of the mother when giving birth (β=.17, p=.028) and current employment status (β=.17, p=.049). Conclusion: For mother with premature infants to grow psychologically after their experience, it may be needed to support them to develop and strengthen their resilience through either education or their own support network.

• Journal of Nutrition and Health
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• v.10 no.2
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• pp.5-11
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• 1977

The mature human braun contains over 10 billion nerve cells (neurons), whose functions are directly related to the acquisition, transfer, processing, analysis, and utilization of all the information. There are also billions of glial cells, which serve primarily to support and to maintain the integrity of the neuron network and to synthesize an essential fatty strucfure, myelin. In the human brain DNA content therefore cell number rises rapidly until birth and then more slowly until $5{\sim}6$ months of age, when it reaches a maximum. While glial cells may be replaced, the more important nerve cell neurons can never be replaced once they are formed. Humans are born with their full complement of neurons and every neuron is as old as each individual. Thus prenatal malnutrition can seriously affect a person's entire life by severely inhibiting the production of neurons before birth.It has been demonstrated that in humans severe malnutrition during the fetal period and in infancy is associated with intellectual impairment. Severely malnourished children have brains smaller than average size and have been found to have $15{\sim}20%$ fewer brain cells than wellnourished childen. There is growing body of literature pointing to malnutrition as a cause of abnormal behavior as evidence that suggests these abnormalities may produce chromosomal damage that may persist forever. Although cognitive development in children is affected by multiple environmental factors, nutrition certainly deaerves more attention than it has received.

• Research in Community and Public Health Nursing
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• v.17 no.2
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• pp.283-294
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• 2006

Purpose: The purpose of this study was to identify the factors influencing childhood immunization. Method: Data were collected by questionnaires from 251 Parents who have 6 months to 7 years old children at public health centers in Seoul and Kyunggi Province. The data were analyzed using descriptive statistics, t-test, ANOVA, and multiple regression. Result: According to general characteristics of the parents and children, there were statistically significant differences in education level of parents, child immunization card, gender, age, and birth order of children. The main factors that affected children's immunization were perceived barriers of action, perceived control, birth order of children, child immunization card, and education level of parents, and these factors explained 49.4%(explanatory power of this model was 49.4%). Conclusion: The results of this study showed strategies for compliance of children immunization. Therefore, when the program are developed for public immunization, these factors need to be considered.

• Journal of the Korean Home Economics Association
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• v.44 no.1 s.215
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• pp.115-129
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• 2006

The purpose of this study was to investigate factors related to the parental role in satisfaction and parenting behaviors. The subjects were 102 employed mothers and 110 unemployed mothers of 5-year-old children living in Seoul, Korea. The measures were questionnaire, the Parental Role Satisfaction Scale and the Parenting Behaviors Scale. The data were analyzed by Cronbach's ${\alpha}$, frequency, percentile, mean, correlation, multiple regression and Chow-test. Consistent with Belsky's model of the determinants of parenting, the parental role satisfaction and parenting behaviors of both employed and unemployed mothers were influenced by child characteristics, parent characteristics, and family factors. Results showed that the parental role satisfaction of both employed and unemployed mothers was correlated to child's birth order, temperament and health of child, mothers' and fathers' age, fathers' educational level, and family income. Parenting behaviors were also correlated to sex of child, child's birth order, temperament of child, parental educational level, and family income for employed mothers and to health of child, mothers' and fathers' age, mothers' educational level, and family income for unemployed mothers. Especially, father's age for employed mothers, and child's temperament for unemployed mothers, were the most strongly related variables for parental role satisfaction. On the other hand, family income for employed mothers, and fathers' age for unemployed mothers were the most strongly related variables for parenting behaviors.

• Clinical and Experimental Pediatrics
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• v.58 no.7
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• pp.270-273
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• 2015

Legg-Calve-Perthes (LCP) disease is characterized by idiopathic avascular osteonecrosis of the epiphysis of the femur head. The main factor that plays a role in the etiology of the disease is decreased blood flow to the epiphysis. Many predisposing factors have been suggested in the etiology of LCP disease, and most have varying degrees of effects. Here we present the case of a boy aged 4 years and 10 months with complaints of short stature and a diagnosis of multiple hypophyseal hormone deficiency, in whom LCP disease and difficult birth-related pituitary stalk interruption syndrome were identified by anamnesis. The present case revealed that LCP disease and hypophyseal hormone deficiency could be secondary to difficult birth and that LCP disease could be secondary to insulin-like growth factor 1 deficiency. Additionally, to the best of our knowledge there is no published case on the relation between LCP disease and insulin-like growth factor 1 deficiency. Therefore, we believe that this case is worthy of presentation.

• Journal of Families and Better Life
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• v.31 no.3
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• pp.141-151
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• 2013

The purpose of this study is to test the economic rationality hypothesis of the low fertility trap among 412 college students at 13 private universities located in Seoul. The respondents were requested to complete the self-administered questionnaire, and the hierarchical multiple regression analyses were performed for analyzing the data. The major findings of this study were as follows: First, the students' views on the prospects for their future employability were 54.6% for big business, 64.51% for medium-sized business, and 49.63% for public sector. In the most employable job, the mean desired monthly salary was 3,505,400 won, while the mean expected monthly salary 2,753,600 won. Second, hierarchical regression analyses revealed that the family income in parental home was positively related to youths' consumption aspirations. Finally, the gap between youths' consumption aspirations and their expected income was negatively related to their desired number of children, while not significantly related to their planned age of first child birth. Thus, the low fertility trap hypothesis was supported in terms of birth rate drop, but not supported in terms of childbearing postponement. The implications of the study results are discussed.

• The Transactions of The Korean Institute of Electrical Engineers
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• v.58 no.5
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• pp.891-897
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• 2009

This paper presents a novel load management technique that can lower the peak demand caused by package airconditioner loads in large apartment complex. An intelligent hierarchical load management system composed of a Central Intelligent Management System(CIMS) and multiple Local Intelligent Management Systems(LIMS) is proposed to implement the proposed technique. Once the required amount of the power reduction is set, CIMS issues tokens, which can be used by each LIMS as a right to turn on the airconditioner. CIMS creates and maintains a queue for fair and proper allocation of the tokens among the LIMS requesting tokens. By adjusting the number tokens and queue management policies, desired power reduction can be achieved smoothly. The Markov Birth and Death process and the Balance Equations utilizing the Diffusion Model are employed for evaluation of queue performances during transient periods until the static balances among the states are achieved. The proposed technique is tested using a summer load data of a large apartment complex and give promising results demonstrating the usability in load management while minimizing the customer inconveniences.