• Journal of Animal Reproduction and Biotechnology
• /
• v.34 no.3
• /
• pp.253-258
• /
• 2019

A female English bulldog was gave birth two neonates by cesarean section on the sixty one days after mating, but both neonates were died soon after birth. The bodies of neonates were diagnosed using radiography, ultrasonography, computed tomography and necropsy immediately after death. Both neonates had caudal regression syndrome, butterfly vertebra, hydrocephalus, umbilical hernia, cleft palate and bow-legged hind-limb. At necropsy, neonates had mild fetal anasarca, cleft lip and the skull was remained non-union. At thoracic cavity, only three ribs and thoracic spines were existed and patent ductus arteriosus was found. At abnormal cavity, the renal ectopia was found with abnormal morphology. In the present case, those English bulldog neonates with multiple congenital malformation syndromes seriously suffered vertebral column anomalies and that may induced by neural tube defects in during embryonic period. To prevent congenital malformation occurring in English bulldog, further in depth studies are needed for the breed specific genetic diversity and for the reason of behind genetic abnormality in these breed.

• KSII Transactions on Internet and Information Systems (TIIS)
• /
• v.13 no.6
• /
• pp.2838-2858
• /
• 2019

Traditional channel models for vehicle-to-vehicle (V2V) communication usually assume fixed velocity in static scattering environment. In the realistic scenarios, however, time-variant velocity for V2V results in non-stationary statistical properties of wireless channels. Dynamic scatterers with random velocities and directions have been always utilized to depict the non-stationary statistical properties of the channel. In this paper, a non-stationary geometry-based cooperative scattering channel model is proposed for multiple-input multiple-output (MIMO) V2V communication systems, where a birth-death process is used to capture the appearance and disappearance dynamic properties of moving scatterers that reflect the time-variant time correlation and Doppler spectrum characteristics. Moreover, our model has more straight and concise to study the impact of the vehicular traffic density on channel characteristics and thus avoid complicated procedure in deriving the analytical expressions of the channel parameters and functions. The numerical results validate our analysis and demonstrate that setting important parameters of our model can appropriately build up more purposeful measurement campaigns in the future.

• Korean Journal of Community Nutrition
• /
• v.7 no.5
• /
• pp.686-695
• /
• 2002

The purpose of this study is to assess the maternal iron status during pregnancy and to evaluate the relationships bet-ween the iron indices of maternal, umbilical cord serum, placenta and pregnancy outcomes. Venous bloods samples were drawn from 54 pregnant women just before delivery and cord bloods of their newborn babies were collected immediately after birth. And also, placental tissues were extracted. We investigated the difference of the iron status indices of maternal, umbilical cord serum and placental tissue between two gestational age group (PT group, NT group : preform delivery and normal term delivery at 34.9wk and 39.0wk of mean gestational length, respectively) and also assessed correlations of iron status indices of maternal, umbilical cord serum and placenta tissue. And lastly, we related between birth weight and iron status indices of maternal, umbilical cord serum and placental tissue. The concentrations of maternal serum ferritin and of placental iron were significantly higher in NT group (32.1 $\pm$ 21.1 ng/ml, 68.5 $\pm$ 16.7 $\mu$g/g), than those of NT group (20.8 $\pm$ 11.6 ng/ml, 53.2 $\pm$ 17.4 $\mu$/g) respectively (p<0.001). However the serum ferritin of umbilical cord were significantly higher in NT group (PT : 109.4 $\pm$ 65.7 ng/ml, NT : 147.0 $\pm$ 56.8 ng/ml) than those of PT group (p<0.05). Our results showed that a negative association between birth weight (r=-0.361) and maternal serum ferritin and that a positive association between birth weight and umbilical cord serum ferritin (r=0.261). Despite not a significant difference, there was tendency that highest concentration of maternal serum ferritin was associated with the lowest birth weight. These findings indicate that birth weight of newborn is dependent of multiple factors such as maternal iron status during pre-pregnancy, body size, general nutritional status. Although for women who enter pregnancy with low iron stores, enough intakes of iron during pregnancy could produce undesirable pregnancy outcome. Therefore we suggest for successful pregnancy outcome and delivery differential iron supplementation program will be carried out individual pregnant women on the basis of pre-pregnancy nutritional status.

• International Journal of Reliability and Applications
• /
• v.16 no.1
• /
• pp.35-53
• /
• 2015

This investigation deals with reliability and sensitivity analysis of a repairable embedded system with standby wherein repairman takes multiple vacations. The hardware system consists of 'M' operating and 'S' standby components. The repairman can leave for multiple vacations of random length during its idle time. Whenever any operating unit fails, it is immediately replaced by a standby unit if available. Moreover, governing equations of an embedded system are constructed using appropriate birth-death rates. The vacation and repair time of repairman are exponentially distributed. The matrix method is used to find the steady-state probabilities of the number of failed components in the embedded system as well as other performance measures. Reliability indexes are presented. Further, numerical experiments are carried out for various system characteristics to examine the effects of different parameter. Using a special class of neuro-fuzzy systems i.e. Adaptive Network-based Fuzzy Interference Systems (ANFIS), we also approximate various performance measures. Finally, the conclusions and future research directions are provided.

• Journal of Nutrition and Health
• /
• v.37 no.2
• /
• pp.123-131
• /
• 2004

This study was carried out to identify dietary risk factors for childhood obesity. The study subjects were male children, aged 2-6years, who were enrolled in nursery schools and kindergartens. We obtained anthropometric measurements from 949 boys and dietary questionnaires from 253 boys. The subjects were classified into two groups using the BMI criteria, normal (n=200) group with the BMI below 85th percentile and the obese group with the BMI at 85th percentile and above (n=53). The logistic regression analysis showed that the odds ratios (OR) for obesity were, birth weight greater than 4.0㎏ (3.27) , increased meal speed (4.98) , the frequency of overeating more than twice a week (2.63), the consumption of cooked rice more than one bowl per meal (2.77), the consumption of milk and dairy products less than 5 times a week (2.81), and increased maternal meal speed (1.98). Stepwise multiple logistic regression analyses showed that the variables which contribute to obesity significantly were birth weight greater than 4.0 ㎏ (OR 5.19), the frequency of overeating more than twice a week (OR 2.51) , the consumption of cooked rice more than one bowl per meal (OR 2.74), and the consumption of milk and dairy products less than 5 times a week (OR 4.43) (p＜0.0001) . The results of this study indicate that dietary habits of both children and of their mothers as well as child's birth weight are important variables that contribute to childhood obesity. (Korean J Nutrition 37(2): 123-131, 2004)

• Journal of Korean Physical Therapy Science
• /
• v.5 no.3
• /
• pp.651-658
• /
• 1998

Cerebral palsy is a neurodevelopmental impairment caused by a nonprogressive defect or lesion in single or multiple locations in the immature brain. The defect or lesion can occur in utero or during or shortly after birth and produces sensory-motor impairment that are usually evident in early infancy. The causes of cerebral palsy are not completely understood, certain prenatal, perinatal, and postnatal factors have been associated with cerebral palsy. This study was analysed the clinical features of 50 children with cerebral palsy (29 males and 21 females) in National Rehabilitation Hospital from March 17 to June 27, 1998. The time of initial visit was over than 12 months in 74%, and their cheif complains were delayed developments (78%). The preterm infants were 40% and the infants with low birth weight were 36%. The maternal age at childbirth was over than 30 years old in 52%. The most common type of cerebral palsy was spastic (54%), mixed (22%), athetosis and hypotonia (10% each), ataxia (4%). The cerebral palsy with preterm infants and low birth weight were more likely to have spastic type (P=0.002, P=0.023 each). The most preterm infants were born between 30 and 35 years old of maternal age, and there were statistical significance in difference (P=0.031).

• Korean Journal of Human Ecology
• /
• v.17 no.5
• /
• pp.835-845
• /
• 2008

The purpose of this study was to identify the effects of maternal depression, adolescent's self-esteem and adolescent's sex, grade, birth order on the adolescent's social anxiety. for this purpose, data from 334 middle school students and their mothers were collected. frequency, percentage, Cronbach's a, MANOVA and multiple regression analysis were used for data analysis. The main results were as follows. First, there were not significant differences of adolescent's social anxiety according to adolescent's sex, grade and birth order. Second, there were not significant effects of adolescent's sex, grade, birth order and maternal depression on three subordinate factors of adolescent's social anxiety, but adolescent's self-esteem had significant effects on fear of negative evaluation, social avoidance and distress(new), and social avoidance and distress(general) as subordinate factors of adolescent's social anxiety.

• Perspectives in Nursing Science
• /
• v.10 no.2
• /
• pp.97-110
• /
• 2013

Purpose: This study sought to identify how initiating breastfeeding soon after birth affected breastfeeding practice. Methods: The subjects were mothers and newborns in Seoul's S. University Hospital maternity unit who elected to breastfeed. They were divided into an experimental group, which practiced an "early latching-on program" (latching-on within 30 minutes after birth), and a control group, which did not. Both groups' daily frequencies of breastfeeding and supplementary-glucose or bottle feeding were recorded. Results: The correlation between socio-demographic and medical characteristics and the breastfeeding rate was examined; 3 variables showed statistical significance: neonatal health anomaly, Apgar score after 1 minute, and Apgar score after 5 minutes. The difference in breastfeeding rates between the two groups was clear: the experimental group's rate was 1.93, while the control group's was 3.76 (t-statistic difference: 14.865), with the experimental group's rate during hospitalization being twice that of the control group (73.3% and 32.6%, respectively). Multiple regression analysis assessing the influence of the latching-on program yielded a t-statistic of -4.735 and a p-value of .000, indicating statistical significance. Conclusion: An early latching-on program's positive effect on the breastfeeding practice of mother's of newborns was demonstrated. Therefore, an early latching-on program could be a practical and effective nursing intervention for after mothers give birth.

• Journal of Yeungnam Medical Science
• /
• v.6 no.2
• /
• pp.173-181
• /
• 1989

The effect of interpregnancy interval on birthweight of the subsequent child was investigated for the 1,347 womens of 25 to 40 years old age who visited OBGY and Pediatric department of the general hospital in Taegu city. Questions in designed questionnaire were asked by student interviewers who were trained in nursing school. Mean birth weight by interpregnancy intervals were compared by the intervals of 6 months. Mean birth weight increased from 3,250 grams for intervals of 6 months to 3,357 grams for intervals of 25-30 months, hut the difference was not statistically significant(=0.47). Correlations between the continuous variables which were suspected as con founders and interpregnancy interval and birth weight were investigated. The coefficient of correlation between maternal age and interpregnancy interval was 0.39, between gestational period and birth weight 0.30 and between prepregnant weight and birth weight 0.16 and between birth weight of first baby and birth weight(of second baby) 0.44. But maternal age, gestational period and prepregnant weight were not considered as confounder, because they were not correlated simultaneously with birth interval and birth weight. Associations between the discrete variables which were suspected as confounders, and interpregnancy interval were investigated by Chi-square test. Associations between interpregnancy interval and educational level of mothers, types of husband's occupation, types of medical security, sex were not significant(P-values were 0.59, 0.75, 0.75, 0.82 respectively), so we did not considered these variables as confounding variables. In multiple regression analysis of birth weight, significant variables were birth weight of first baby, gestational period, sex of neonate and prepregnancy body weight of mother. Of the 1,347 births, the rate of low birth weight was 2% (27 birth). The rate for interpregnancy interval 7-12 months was highest as 3.6% and that for 13-18 months was lowest as 0.6%, but there was no regular tendency related with interpregnancy interval.

• Journal of the Korean Home Economics Association
• /
• v.42 no.12 s.202
• /
• pp.1-14
• /
• 2004

The purpose of this study was to identify how characteristics of young children (sex, age, birth order, temperament), parents (education level, employed or unemployed mother, mother's parenting behavior), and family (income) relate to young children's stress levels and to examine the relative effects of these variables on young children's stress. The subjects for this study were 287 young children, aged from 3 to 5 years old, selected from kindergartens and day-care centers in Busan. Data were analyzed with t-test, ANOVA, correlation, and multiple regression. The results were as follows. (1) Young children's stress was correlated with young children's sex, age, birth order and temperament. (2) Young children's stress was correlated with parenting behaviors. (3) Young children's stress was not correlated with income. (4) Children's emotionality and maternal overprotective behavior were the most significant variables affecting the stress experienced by boys and girls, respectively. (5) Maternal overprotective behavior variable affected both sibling and only children's stress.