• Journal of Families and Better Life
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• v.31 no.6
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• pp.83-96
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• 2013

The aim of this study was to identify the differences in cellular phone dependency and its use levels of usage purposes according to children's gender, and also to analyze the differences in individual and interpersonal relations development due to cellular phone dependency in children based on gender. Using the first year data of the Korean Child and Youth Panel Survey(KCYPS) 2010, this study analyzed 1,604 fourth graders who have their own cellular phones. For statistical analysis, descriptive statistics were calculated and mean difference analyses were conducted. The results showed that there was no difference between boys and girls in cellular phone dependency. The girls' total phone use level was higher than that of boys and meaningful gender differences in the phone use levels were found in the five phone usage purposes. In both boys and girls, the higher phone dependency groups demonstrated higher levels of phone use in more than eight usage purposes, lower self-resilience and self-regulating learning ability, and less positive peer and teacher relations. These findings show the importance of being concerned about and educating children in the fourth grade about the proper uses of cellular phones.

• Journal of the Korean Home Economics Association
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• v.49 no.2
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• pp.97-109
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• 2011

The purpose of this study was to investigate the reading habits, reading patterns and reading motivation of 362 college students from the capital area majoring in child development or early childhood education. The main findings of this study were as follows. Firstly, 70 percent of students spent less than three hours a week on reading academic or school-related material, and 75 percent spent less than three hours a week on independent or recreational reading. Students most preferred reading the "cultural" genre and least preferred reading the "human life(spiritual)" genre. The "cultural" and the "human life(spiritual)" genres also represented the most and least frequently read genres, respectively. Secondly, students presented high-level reading patterns, in that they previewed the reading material before reading, understood the meaning of it during reading, and shared their reading experience with others after reading. Thirdly, the average reading motivation levels scored near the midpoint on a five-point scale. Fourthly, students with higher reading motivation levels displayed higher reading frequencies and preference levels for each genre, with the exception of the "fiction and humor" genre. Moreover, students with higher levels of reading motivation received higher ratings for their reading patterns.

• Korean Journal of Pharmacognosy
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• v.46 no.1
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• pp.78-83
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• 2015

This study was conducted to verify the potential of Allium hookeri to control glucose metabolism in a diabetes model. We fed the experimental diets (AL, AR, Dex) supplemented with the powder of leaf, root, or dextrin as a positive control, respectively at 3% of diet to the diabetic mice (C57BLKS/J, db/db) for 8 weeks. Control mice were fed with the diet supplemented with cornstarch (Cont) at 3% level of diet. At 8th week of feeding the diets, we measured body weight, blood glucose, HbA1c, and plasma insulin levels and conducted an oral glucose tolerance test (OGTT) and staining insulin immunoreactive cells in islets of pancreas. AL group treated with the leaf of A. hookeri showed significantly lower blood glucose and HbA1c levels, higher plasma insulin levels, and increased density of insulin immunoreactive cells compared with the Cont group. During the OGTT, AL group showed lower blood glucose levels than the Cont group for 120 min. Based on these results, leaf of A. hookeri is considered to be effective in improving glucose tolerance by partially affecting insulin secretion and it may be used to prevent and treat diabetic disease.

• Journal of Korean Academy of Nursing
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• v.38 no.3
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• pp.483-491
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• 2008

Purpose: The purpose of this research was to examine the relationship between sexual knowledge, frequency, satisfaction, marital intimacy, and depression levels in stroke survivors and their spouses. Methods: This study was a convenience sample of Korean men who had experienced a stroke and their spouses. The subjects were discharged from the hospital and received physical therapy. Data such as sexual knowledge, frequency, satisfaction, marital intimacy, and depression levels were collected from November 2005 to April 2006. Results: In a comparison of stroke survivors and their spouses, the survivors showed higher mean levels of sexual knowledge and marital intimacy. The levels of knowledge, frequency, satisfaction and marital intimacy were low and depression was mild in the subjects. There were significant correlations between sexual frequency, sexual satisfaction and marital intimacy. Also, subjects with lower levels of sexual satisfaction were more depressed. The spouses who possessed greater levels of sexual knowledge reported a higher frequency of sex and greater marital intimacy. In addition, spouses who reported feeling greater levels of marital intimacy experienced fewer depressive symptoms. Conclusion: These findings demonstrate a need for the development of sexual adaptation programs which could be effective in improving sexual knowledge, frequency, satisfaction, marital intimacy, and depression reported by stroke patients and their spouses. Ideally, these corrective programs should be administered before patients are discharged from the hospital.

• Journal of Haehwa Medicine
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• v.13 no.2
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• pp.97-107
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• 2004

As a long-term goal for the development of new prescriptions for hyperlipidemia, SGHHT was examined in the present study using a rat model in which the hyperlipidemia was induced. The major parameters related to lipid metabolism were investigated and the key findings are summarized below. 1. The body weight of hyperlipidemia-induced rats began to show lower body weight beginning one week after SGHHT treatment compared to non-treated control group animals. 2. Cholesterol levels showed a significant decrease beginning three weeks after SGHHT treatment, compared to hyperlipidemia-induced control group. 3. Total cholesterol levels in SGHHT-treated animal group were significantly decreased compared to the hyperlipidemia-induced control group. 4. Glucose levels in SGHHT-treated animal group were significantly decreased compared to the hyperlipidemia-induced control group. 5. Triglyceride levels in SGHHT-treated animal group were significantly decreased compared to the hyperlipidemia-induced control group.6. SGOT levels in SGHHT-treated animal group were significantly decreased compared to the hyperlipidemia-induced control group whereas there was no significant change in SGPT levels. 7. HDL-cholesterol levels were significantly increased in SGHHT- treated animal group compared to the hyperlipidemia-induced control group. 8. LDL-cholesterol levels were significantly decreased in SGHHT-treated animal group compared to the hyperlidemia-induced control group.

• Journal of Haehwa Medicine
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• v.14 no.2
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• pp.71-85
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• 2005

As a long-term goal for the development of new prescriptions for hyperlipidemia, IJWRT was examined in the present study using a rat model in which the hyperlipidemia was induced. The major parameters related to lipid metabolism were investigated and the key findings are summarized below. IJWRT didn't show the cytotoxicity on Human Fibroblast Cells(hFCs). The body weight of hyperlipidemia-induced rats began to show lower body weight beginning one week after IJWRT treatment compared to non-treated control group animals. Cholesterol levels showed a significant decrease beginning three weeks after IJWRT treatment, compared to hyperlipidemia-induced control group. Total cholesterol levels in IJWRT treated animal group were significantly decreased compared to the hyperlipidemia-induced control group. Glucose levels in IJWRT treated animal group were significantly decreased compared to the hyperlipidemia-induced control group. Triglyceride levels in IJWRT treated animal group were significantly decreased compared to the hyperlipidemia-induced control group. SGOT levels in IJWRT treated animal group were insignificantly decreased compared to the hyperlipidemia-induced control group whereas there was significant change in SGPT levels. HDL-cholesterol levels were significantly increased in IJWRT treated animal group compared to the hyperlipidemia-induced control group. LDL-cholesterol levels were significantly decreased in IJWRT treated animal group compared to the hyperlipidemia-induced control group.

• Korean Journal of Child Studies
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• v.25 no.2
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• pp.93-108
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• 2004

This study investigated personality and environmental variables influencing peer bullying by sex and by differences between bullies, victims, bully-victims, and normal children. Findings were that the proportion of the total sample involved in peer bullying was 47.88%. Of the bullying children, 38.15% were bully-victims, followed by victims and bullies. The bullying of both boys and girls was influenced by exposure to violence, delinquent friends, and peer support. Bullies had higher levels of aggression and exposure to violence than normal children and higher levels of peer support than victims. Victims had higher levels of delinquent friends and exposure to violence than normal children. Bully-victims showed higher levels of aggression, immaturity, delinquent friends, exposure to violence and lower levels of peer support than normal children.

• KDI Journal of Economic Policy
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• v.44 no.4
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• pp.1-24
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• 2022

We investigate how reforestation contributed to stabilization of riverine water levels in South Korea. For the purpose, we estimate an equation capturing dynamic relationships among rainfall, upstream-area tree stock, and downstream water levels in three river systems of Hongcheon, Mangyeong, and Hyeongsan, using daily observations of precipitation and water levels for the period from 1985 to 2005. Simulation based on estimation results shows that increase in the tree stock in a river basin leads to a significantly suppressed peaking in riverine water levels in response to an abrupt and concentrated rain in the upstream area. For instance, an hour-long concentration of 100mm rain results in 0.7m rise in water level if the volume of growing stock is 1 million m³, whereas the rise in water level stays below 0.27m with 5 million m³ in the growing-stock volume.

• Asian-Australasian Journal of Animal Sciences
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• v.26 no.4
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• pp.529-536
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• 2013

The objective of this study was to investigate the effect of levels of cottonseed meal with various carbohydrate sources in concentrate on feed intake, nutrient digestibility, rumen fermentation and microbial protein synthesis in dairy bulls. Four, 6 months old dairy bulls were randomly assigned to receive four dietary treatments according to a $2{\times}2$ factorial arrangement in a $4{\times}4$ Latin square design. Factor A was carbohydrate source; cassava chip (CC) and cassava chip+rice bran in the ratio of 3:1 (CR3:1), and factor B was cotton seed meal levels in the concentrate; 109 g CP/kg (LCM) and 328 g CP/kg (HCM) at similar overall CP levels (490 g CP/kg). Bulls received urea-lime treated rice straw ad libitum and were supplemented with 10 g of concentrate/kg BW. It was found that carbohydrate source and level of cotton seed meal did not have significant effects on ruminal pH, ammonia nitrogen concentration, microbial protein synthesis or feed intake. Animals which received CC showed significantly higher BUN concentration, ruminal propionic acid and butyric acid proportions, while dry matter, organic matter digestibility, populations of total viable bacteria and proteolytic bacteria were lower than those in the CR3:1 treatment. The concentration of total volatile fatty acids was higher in HCM than LCM treatments, while the concentration of butyric acid was higher in LCM than HCM treatments. The population of proteolytic bacteria with the LCM treatments was higher than the HCM treatments; however other bacteria groups were similar among the different levels of cotton seed meal. Bulls which received LCM had higher protein digestibility than those receiving HCM. Therefore, using high levels of cassava chip and cotton seed meal might positively impact on energy and nitrogen balance for the microbial population in the rumen of the young dairy bull.

• Proceedings of the Korean Society of Embryo Transfer Conference
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• 2002.11a
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• pp.115-115
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• 2002

To evaluate the correlations between the expression of cyclin B1 mRNA and protein after stimulation and oocyte activation and development of nuclear transferred mouse embryos, this study was performed. The oocyte activation was induced by 7% ethanol or 10$\mu\textrm{g}$/$m\ell$ Ca-ionophore without (single) or with (combined) 10$\mu\textrm{g}$/$m\ell$ cycloheximide (CH). Cyclin B1 mRNA and protein in mouse oocytes was evaluated by PCR and western blot. The activation and blastocyst development in both single (P<0.05) and combined (P<0.01) stimulation was higher than in non-activated group. The cyclin B1 mRNA and protein levels were significantly reduced in both single and combined stimulation groups (P<0.05), respectively. Cyclin B1 mRNA expression showed a negative correlation between activation and blastocyst development in both single and combined stimulation groups. And also the expression of cyclin B1 protein showed a negative correlation with between oocyte activation and blastocysts development in both single and combined stimulation groups. In conclusion, it may suggest that single and combined stimulation increases the oocyte activation and blastocyst development of nuclear transferred embryos, because it induces the degradation of cyclin B1 mRNA and protein after activation in enucleated mouse oocytes.