• Korean Journal of Child Studies
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• v.29 no.5
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• pp.79-96
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• 2008

This study analyzed differences of role behaviors of participants in bullying according to bystanders' characteristics. Participants were 112 $5^{th}$, $6^{th}$ and $7^{th}$ grade students. Bystanders' characteristics of empathy, negative attitudes about bullying, psychological burden, distorting of consequences, and attribution of blame were classified by K-Means Cluster Analysis into three groups with similar characteristics : lack of empathy/cognitive distorting, anti-bullying, and perception of cost groups. Major findings were that : the lack of empathy/cognitive distorting group had higher levels of bullying behavior than the anti-bullying group and higher levels of victimization than the perception of cost group. The anti-bullying group showed higher levels of defense behavior than the lack of empathy/cognitive distorting group. Implications for future research were discussed.

• Journal of the Korean Chemical Society
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• v.49 no.1
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• pp.96-104
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• 2005

• Korean Journal of Child Studies
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• v.31 no.6
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• pp.125-134
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• 2010

The aim of this paper is to examine the effects of children's ego-resilience and social support on exam anxiety and school adjustment. The subjects of this study were 534, $5^{th}$ and $6^{th}$ grade students (275 boys and 259 girls) from the Pusan area. The results of this study revealed that the levels of Ego-resilience and social support correlated negatively with exam anxiety, and positively with school adjustment. Therefore the more ego-resilience and social support children felt that they had, the lower the levels of exam anxiety they experience, and the higher their levels of school adjustment. The influence of ego-resilience on exam anxiety was higher than that of social support and the influence of ego-resilience on school adjustment was similar to that of social support. The implications of the present study were also discussed.

• The Korean Journal of Community Living Science
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• v.19 no.4
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• pp.547-558
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• 2008

The purpose of this study was to identify a couple's parental efficacy combination and, then, analyze parental role-sharing and parenting stress according to this combination type. The subjects were 307 couples who have a child in 1st or 2nd grade. The main results were as follows: First, fathers and mothers, as a group, did not differ in terms of parental efficacy. Secondly, some demographic variables related to parental efficacy. Thirdly, there are more couples who have similar levels of parental efficacy than those who have different levels of parental efficacy. Fourth, no significant difference in parental role-sharing was found among the 4 types of couple's parental efficacy. Fifth, mothers had low parental stress when both of the couple had high levels of parental efficacy while fathers perceived low parental stress if only he, himself, had a high level of parental efficacy.

• Asian Pacific Journal of Cancer Prevention
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• v.15 no.5
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• pp.2319-2321
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• 2014

Our aim was to determine GSTT1 expression levels in left colon tumors and paired normal tissue in order to identify specific alterations in GSTT1 mRNA levels. Alterations in GSTT1 expression in twenty-four left-sided colon tumors and paired cancer free tissue were determined by qRT-PCR. Significant fold changes were determined with t-test. When compared with cancer free tissue, left colon cancers showed a significant decrease in GSTT1 expression. However, GSTT1 mRNA levels among different grades increased gradually in correlation with tumor grade. Our results suggest that downregulation of GSTT1 in left-sided colon cancers is an early event and is reversed with cancer progression, probably due to cellular defense mechanisms as a response to changes in the microenvironment.

• Asian Pacific Journal of Cancer Prevention
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• v.15 no.14
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• pp.5653-5657
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• 2014

Background: To evaluate factors which effect treatment interruption during concurrent chemoradiotherapy (CCRT) and overall survival in patients with uterine cervical cancer stage IB2-IVA in Srinagarind Hospital. Materials and Methods: Between January 2006 and December 2007, 107 patients with stage IB2-IVA as FIGO staging, 2000, were treated with CCRT in Srinagarind Hospital. Factors which caused treatment interruptions and impacted on overall survival were reviewed and analyzed. Results: Twenty of 107 patients had treatment interruption during CCRT in patients with uterine cervical cancer stage IB2-IVA in Srinagarind Hospital. The causes of treatment interruption were as follows: hematologic toxicity was found in 16 of 20 cases, 12 cases with grade 2 and 4 cases with grade 3; three of 20 cases had gastrointestinal toxicities, 1 case with grade 2 and 2 cases with grade 3; one case had grade 3 skin toxicity. The mean total treatment time of the uninterrupted and interrupted groups were significantly different (78.98 days vs 161.80 days, p <0.001). The patients who could tolerate ${\geq}5$ cycles of cisplatin administration had significantly higher mean white blood counts (WBC) ($9,769cells/mm^3$ vs $7,141cells/mm^3$, p=0.02). The mean initial hemoglobin (Hb) in the uninterrupted group was significantly higher than the interrupted group (11.5 mg% vs 10.3 mg%, p=0.03). Other factors including age, KPS, initial platelets, initial serum creatinine levels showed no statistical significance. The 3-year overall survival of the uninterrupted group was better than in the interrupted group (78.6% vs 55.0%, p=0.03). Conclusions: The initial Hb and WBC levels were significantly correlated with treatment interruption during CCRT in patients with uterine cervical cancer. The 3-year overall survival of the uninterrupted group was significantly better than interrupted group. These factors may then be used indirectly to predict the outcomes of treatment.

• Agricultural and Biosystems Engineering
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• v.4 no.1
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• pp.8-15
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• 2003

In Korea, quality evaluation of dried oak mushrooms are done first by classifying them into more than 10 different categories based on the state of opening of the cap, surface pattern, and colors. And mushrooms of each category are further classified into 3 or 4 groups based on its shape and size, resulting into total 30 to 40 different grades. Quality evaluation and sorting based on the external visual features are usually done manually. Since visual features of mushroom affecting quality grades are distributed over the entire surface of the mushroom, both front (cap) and back (stem and gill) surfaces should be inspected thoroughly. In fact, it is almost impossible for human to inspect every mushroom, especially when they are fed continuously via conveyor. In this paper, considering real time on-line system implementation, image processing algorithms utilizing artificial neural network have been developed for the quality grading of a mushroom. The neural network based image processing utilized the raw gray value image of fed mushrooms captured by the camera without any complex image processing such as feature enhancement and extraction to identify the feeding state and to grade the quality of a mushroom. Developed algorithms were implemented to the prototype on-line grading and sorting system. The prototype was developed to simplify the system requirement and the overall mechanism. The system was composed of automatic devices for mushroom feeding and handling, a set of computer vision system with lighting chamber, one chip microprocessor based controller, and pneumatic actuators. The proposed grading scheme was tested using the prototype. Network training for the feeding state recognition and grading was done using static images. 200 samples (20 grade levels and 10 per each grade) were used for training. 300 samples (20 grade levels and 15 per each grade) were used to validate the trained network. By changing orientation of each sample, 600 data sets were made for the test and the trained network showed around 91 % of the grading accuracy. Though image processing itself required approximately less than 0.3 second depending on a mushroom, because of the actuating device and control response, average 0.6 to 0.7 second was required for grading and sorting of a mushroom resulting into the processing capability of 5,000/hr to 6,000/hr.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.16 no.4
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• pp.2674-2683
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• 2015

This study was performed to determine the levels of depression(CES-D) and its related factors among the elderly people affiliated with long-term care insurance services in urban areas. The interviews were performed, during the period from March 1st, to May 31th, 2012, to 388 elderlies. As a result, the levels of depression among all subjects were 21.6% of normal group, and 78.4% of depression group. The distribution of depression according to the grade of long-term care insurance were 83.6% in Grade I, 82.1% in Grade II and 67.0% in Grade III, and the level of distribution were significantly higher according to the higher grade of long-term care insurance. For the results of multiple logistic regression analysis, the odds ratio was increased in older age group, in the poor health status group, and in the group of seldom in activity of hobbies than their counterparts, but it was decreased in the higher monthly income group than lower group. Above results suggested that the depression was significantly related with the variables such as sociodemographic characteristics, economic status, health related factors and health status.

• Communications of Mathematical Education
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• v.31 no.2
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• pp.187-201
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• 2017

The study in this paper, which is part of a bigger study investigating non-cognitive characteristics of Korean students at the 4-12 grade levels, aims to identify the influential characteristics that explain students' decision to give up on mathematics learning. We consider seven non-cognitive student characteristics: value, interest, attitudes, external motivation, internal motivation, learning conation and efficacy. Data were collected from 21,485 Korean students, and were analyzed with a logistic regression method using SPSS. The findings show that efficacy was the most significant indicator of students' decision to give up on mathematics learning in all three grade level bands: elementary (4th-6th), middle (7th-9th) and high (10th-12th). In particular, the causal model analysis shows that students who highly value mathematics tend to have stronger internal and external motivation, which bring about stronger interest and learning conation, which in turn lead to positive attitudes and strong efficacy regarding the learning of mathematics. It was further found that while external motivation was a significant indicator of upper grade level students' decision to give up on mathematics learning, it was only a moderate indicator for lower grade level students. The findings of this study provide useful information about which non-cognitive areas need to be focused on, in what grade levels, to help students stay on track and not fall behind in learning mathematics.

• Asian-Australasian Journal of Animal Sciences
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• v.32 no.3
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• pp.437-441
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• 2019

Objective: Paraoxonase 1 (PON1), a calcium-dependent serum enzyme, has been shown to be involved in lipid metabolism. In this study, we examined the putative correlation of the serum PON1 level of Hanwoo, Korean native cattle, with gender and meat quality grade. Methods: PON1 levels were estimated by determining the arylesterase and paraoxonase activities (AE and PO, respectively) in serum samples from Hanwoo individuals (n = 56). Serum PON1 levels were analyzed in different gender groups (female [n = 21], castrated male [n = 17], and male [n = 18]), and meat quality grades (${\geq}1$ [n = 23], 2 [n = 21], and 3 [n = 12]). Results: Serum PON1 levels were similar in female ($AE=120{\pm}55U/mL$, $PO=84{\pm}43mU/mL$) and castrated male ($123{\pm}44U/mL$, $PO=89{\pm}30mU/mL$), while male showed a significantly lower level ($AE=65{\pm}43U/mL$, $PO=44{\pm}34mU/mL$). Furthermore, analysis of serum PON1 levels in three different grades of meat quality showed similar levels in the grades ${\geq}1$ ($AE=118{\pm}49U/mL$, $PO=84{\pm}37mU/mL$) and 2 ($AE=116{\pm}54U/mL$, $PO=82{\pm}43mU/mL$), while the level was significantly lower in the grade 3 ($AE=58{\pm}35U/mL$, $PO=39{\pm}27mU/mL$) of lower meat quality. Conclusion: We discovered the gender-dependent differences in serum PON1 levels of Hanwoo and a positive association of the serum PON1 level with meat quality. Results in this study suggest that PON1 would be a useful serum marker for preliminary screening of Hanwoo individuals with high-quality meat and applicable for genetic improvement.