• 한국초등과학교육학회지:초등과학교육
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• 제25권spc5호
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• pp.532-547
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• 2007

The purposes of this study were to investigate the creative science problem solving (CSPS) process amongst scientifically-gifted students and average students through the qualitative think-aloud research method, and to compare the differences in their CSP, scientific knowledge, scientific process skills, creative thinking, and finally, the affective domain used in their CSPS. For the purposes of this study, two scientifically-gifted 6th grade students and one average student were selected. The results show that one gifted student with good creative thinking skills exhibited better performance in CSPS than the other gifted student, who had the highest level of scientific knowledge. In the case of the average student, in spite of her high level of factual knowledge, she had difficulty in proceeding in CSPS due to her shallow scientific knowledge along with her low level of understanding of the given problem. This study highlights the importance of considering the factors which influence successful CSPS and which can play an important role in the education of scientifically-gifted children. These factors were identified as scientific knowledge, understanding of the scientific process, creative thinking, the affective domain, and science problem solving skills.

• 보건교육건강증진학회지
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• 제30권1호
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• pp.83-93
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• 2013

Objectives: The objective of this study was to assess the gender differences in the relationship between alcohol use behaviors and the risk of metabolic syndrome among Korean adult population. Methods: Data from the Korean National Health and Nutrition Examination Survey (5th, 2010) was analyzed. Using the Alcohol Use Disorders Identification Test, subjects were classified into 4 groups including non-drinking, low-risk drinking, medium-level alcohol problem, and high-level alcohol problem group. Metabolic syndrome and its components were compared among the alcohol behavior groups by gender. Results: The odds ratio vs. non-drinking group for metabolic syndrome was significantly higher in male medium and high-level alcohol problem group. In female, high-level alcohol problem group showed significantly higher odds ratio for metabolic syndrome. Blood pressure and HDL-cholesterol were likely to be higher with the excessive drinking behaviors in both men and woman. Triglyceride level in men was significantly higher in the medium and high-level alcohol problem group than non-drinking group. Although fasting glucose level did not show differences among drinking groups, the odd ratios vs. non-drinking group for the hyperglycemia (${\geq}$ 100mg/dl) were significantly higher in female drinking groups. Conclusions: Problematic alcohol drinking is likely to increase the risk of metabolic syndrome in Korean adults.

• Asian-Australasian Journal of Animal Sciences
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• 제20권3호
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• pp.440-452
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• 2007

The low feed intake immediately after weaning is responsible for villous atrophy and reduced growth rate in newly-weaned pigs. Overcoming this drawback will produce beneficial results for swine producers, and this warrants an understanding of the factors affecting the feed intake in newly-weaned pigs. In fact, a plethora of factors exert influences on feed intake in newly-weaned pigs, and these factors encompass health status, creep feeding, weaning age, mixing of litters, environment, dietary nutrient level and balance, palatability of ingredients, forms of diet presentation, water supply and quality, and stockmanship. Due to the complexity of the factors that affect the feed intake of weaned pigs, a comprehensive approach should be adopted to overcome the low feed intake problem right after weaning. It warrants mention that it is almost impossible to completely restore the feed intake just after weaning to pre-weaning level in terms of energy intake through dietary means which are available for being practiced economically and/or technically in current swine production. However, a refined dietary regime will certainly alleviate the low feed intake problem in the immediate postweaning period.

• 대한수학회보
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• 제55권4호
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• pp.1161-1178
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• 2018

In this paper, we consider the Cauchy problem for a class of nonlinear sixth-order wave equation. The global existence and the finite time blow-up for the problem are proved by the potential well method at both low and critical initial energy levels. Furthermore, we present some sufficient conditions on initial data such that the weak solution exists globally at supercritical initial energy level by introducing a new stable set.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2000년도 제15차 학술회의논문집
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• pp.359-359
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• 2000

Generally, level control in the steam generator of a nuclear power plant is difficulty process control, because the low power operating can lead nonminimum phase characteristics(swell and shrink phenomenon) and flow measurement are unreliable and nonlinear characteristics. This paper presents a framework for solving this problem based on the constrained linear model predictive control and introduces the design of method for the level of the controller in the entire operating power of the steam generator, and compares with conventional PI controller.

• 가정과삶의질연구
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• 제14권4호
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• pp.219-232
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• 1996

This study was investigated the perceived level of stress and the coping method which the adolescent were confronting. The subject of this investigation was high school students who resided in the City of Pusan. Life Event Scale and Coping Methods Scale were used as the methods for examination. The data were analyzed using M, SD, t-test one-way ANOVA scheffe-test and Pearson's correlation related with this study problem were tested. The results of this study are as follows: 1. The perceived level of teenager's stress was little low with M=1.65 When dividing sphere of perceived level the stress by school problem was the highest and the circumstance problem personal one family one and a companion one are followed in regular sequence. 2. It was found that degree of stress made a difference according to the sex course grade school year religion parents's presence or absence SES the satisfactory degree of school life the satisfactory degree of school life the satisfactory degree of home life and the rearing attitude of parents. 3. As the coping score of teenager's stress was M=2.54. The short-term coping method was higher compared with the long-term one regarding coping methods. 4. It was found that the coping method of stress differed from each other according to variables of sex school year the satisfactory degree of school life and the satisfactory degree of home life. 5. It was found that the perceived level of stress had negative correlation with the coping method and especially long-term coping method had higher negative correlation.

• 대한가정학회지
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• 제44권12호
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• pp.79-91
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• 2006

The purpose of this study was to investigate the perception of problem of internet usage and the willingness to receive internet education among adolescents on Jeju Island, who are core internet users, and the related variables. The survey was administered to 566 students from elementary and middle schools on Jeju. The data were analyzed by T-test, ANOVA analysis, DMR test and logistic regression analysis. The major results of this study were as follows. First, the adolescents perceived the conflict with family due to the problem of internet usage. Taken as a whole, the perception of a problem due to internet usage was low. Second, the internet-related variables were very important to the perception level of the problem in that there was a significant difference in all sub-spheres according to the internet usage time. Also, the personal-related variables such as gender, age, and personal expenses had a meaningful difference on the perception level of problem. Third, adolescents' willingness to receive internet education was considerably high. The personal-related variables such as gender and school record had a meaningful influence on the willingness of the internet education.

• 조명전기설비학회논문지
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• 제21권3호
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• pp.69-74
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• 2007

유도전동기 고정자자속 기준제어의 최대효율제어에서 경부하시 자속은 작은 값이 된다. 이러한 상태에서 갑자기 부하가 증가하였을 경우 전동기는 부하토크에 대응하는 토크를 발생시켜야 하지만, 낮은 자속 때문에 토크제한조건에 의한 토크성분전류는 작은 값으로 제한되며, 부하토크에 대응하는 토크를 발생시키지 못해서 속도제어가 안 되는 문제가 발생한다. 본 논문에서는 이러한 문제를 해결하기 위한 방법을 제안한다.

• 가정의학회지
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• 제39권6호
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• pp.360-363
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• 2018

Background: Acute alcoholic intoxication patients (AAIP) are a common public health problem. The aim of this study was to perform a comprehensive laboratory analysis for these patients to investigate the co-morbid medical problem. Methods: We retrospectively reviewed laboratory findings of AAIP who were transferred to the emergency department (ED) from January 2017 to June 2017. Results: A total of 160 male patients were enrolled. Sixteen patients (16/160, 10.0%) and three patients (3/160, 1.9%) had macrocytic anemia and microcytic anemia, respectively. A total of 33 patients (33/160, 20.6%) showed thrombocytopenia ($<150{\times}10^9/L$). Twelve patients (12/159, 7.5%) showed low serum albumin level (<3.5 g/dL). Three patients (3/160, 1.9%) had chronic kidney disease stages 3-4 based on estimated glomerular filtration rate. Six patients (6/27, 22.2%) had high hemoglobin A1c (HbA1c) level (>7.0%). Positive rates of hepatitis B surface antigen and antiHBs antibody (anti-HBs Ab) were 3.5% (5/141) and 49.0% (68/141), respectively. Conclusion: Patients with AAIP who were transferred to ED had various laboratory abnormalities (anemia, thrombocytopenia, high HbA1c). They had low positive rate of anti-HBs Ab. This might be a public health problem, suggesting the need of hepatitis B virus vaccination program for AAIP. Our data suggest the need of further nationwide studies.

• 공학교육연구
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• 제24권3호
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• pp.58-69
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• 2021

It is very necessary to have a creative problem-solving capacities to learn various majors and liberal arts based on the major, and to solve the bottleneck techniques led by students. In this study, the existing creative problem-solving curriculums, 'Methodology of Inventive Problem Solving' based on TRIZ, were improved and applied, and industrial bottleneck techniques were provided to students to solve these techniques. To improve the curriculum, 1) improvement of instructional objectives and learning contents, 2) improvement of evaluation methods and contents (reflecting the evaluation of instructor and students), and 3) learning satisfaction survey were conducted in the following order. As a result of the application of the improved curriculum, the level of activities for each team was improved, and when the core process was well understood, the evaluation of team activities was also excellent, but there was a tendency to focus on methods that are relatively easy to apply in the problem solving process. In the final exam (learning contents evaluation), teams with difficult understanding of the TRIZ theory or low team activities showed a relatively high trend, but the difference in level between divisions was slightly reduced.