• Journal of the Society of Naval Architects of Korea
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• v.32 no.4
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• pp.136-141
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• 1995

Determination and optimization of proper welding condition are very important tasks to be directly related to weld quality and productivity. On this research the relationship between welding parameters and results is investigated systematically. Theoretical method, statistical analysis of experimental data and analysis of empirical knowledge are applied for this work. These results are represented by empirical equations, fuzzy rules and artificial intelligent knowledge forms in the knowledge base. The approximate reasoning of fuzzy expert system and the information in the knowledge base are used for recommendation of suitable welding condition, and optimization of welding parameter which is based on the evaluation of welding results by user.

• Culinary science and hospitality research
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• v.16 no.2
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• pp.330-341
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• 2010

This study aims to identify the nutrition knowledge, attitude on dietary life and eating habits of 281 high school students in Bucheon area and investigate difference and correlation among the factors: details of nutrition knowledge, attitude on dietary life, dietary habit, meal manager and the Body mass index(BMI). Data were analyzed by descriptive analysis, $\chi^2$-test, t-test, Pearson's correlation coefficients and ANOVA test using SPSS window program. The results show that parents were the most influential group in dietary habits and the group of friends were followed. The nutrition knowledge score of female students was higher than the score of male students. There was a significant difference between nutrition knowledge and attitude on dietary life by meal manager. Especially, nutrition knowledge showed the highest difference when they answered that the meal manager was a mother, and the subject 'eating regular meals' was significant when the meal manager was his/her mother. According to the result of the difference by meal manager, respondents preferred eating snacks the most when father was in charge of meal preparing. This group also preferred eating out than the other groups. Moreover, there was a significant correlation between nutrition knowledge and attitude on dietary life.

• Culinary science and hospitality research
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• v.11 no.4 s.27
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• pp.77-91
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• 2005

The aim of this study was to determine what kinds of an effect on dietary behaviors of elementary school students in seoul by gender. So this survey is classified into nutrition knowledge, food habit dietary behaviors. Nutrition knowledge is different from gender, male is scoring 6.90 out of 10 and female is scoring 7.03 out of 10. Food habit is also different from gender, male is scoring 4.17 out of 10 and female is scoring 4.79 out of 10. Dietary behaviors also female is better than male. This result shows that food service should be more highly satisfied with the food service quality than the food service quantity.

• Journal of Korean Home Economics Education Association
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• v.20 no.4
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• pp.91-105
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• 2008

The purpose of this study was to conduct a questionnaire survey for total 503 high school female students in Wonju area, Kangwon province, and thereby determine any potential effectiveness of their trials to reduce weight in their satisfaction with their own figure, daily living practices related to weight control, nutrition knowledge and dietary behaviors. Out of all respondents, it was found that 284 girl students(58.4%) ever tried to reduce weight, and both trial group(trying to reduce weight) and no-trial group were much interested in weight control(94.7% vs. 60.7%). But 85.2% of trial group and 50.3% of no-trial group were dissatisfied at their figure. It was found that the percentage of trial group practicing regular exercise was higher than that of no-trial group doing so(21.8% vs. 5.5%). Subjects scored 14.3 out of 20 on a nutrition knowledge scale, but trial group scored significantly higher points(14.5) than no-trial group(13.9)(p<0.01). In particular, it was notable that trial group showed higher rate of correct answer in certain items such as balanced diet and knowledge about weight control. It was found that our all respondents showed moderate dietary behaviors, which is demonstrated by their mean score of 31.3 in dietary behaviors(possible score: $15{\sim}45$). Notably, it was found that there were problems exposed in their dietary velocity, intake of various diets and intake frequency for each food group(dairy products, marine plants and vegetative oil and fat). And it was found that the percentage of trial group taking diet with vegetative oil was higher than that of no-trial group.

• Journal of the Korean Society of Food Science and Nutrition
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• v.44 no.2
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• pp.226-233
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• 2015

The purpose of this study was to evaluate salt-related dietary attitudes, behaviors, and nutrition knowledge according to urinary salt signal of university students. Based on urinary salt signal, we classified subjects into an "adequate Na intake (ANI)" group (n=52) (salt ${\leq}6g$) and "excess Na intake (ENI)" group (n=66) (salt >6 g). Subjects were asked about general characteristics, lifestyle, salt-related dietary attitudes, behaviors, and nutritional knowledge using questionnaire. The ENI group had more subjects who were drinkers (P<0.05) compared to the ANI group. The ENI group (33.45) showed a significantly lower score in terms of salt-related dietary attitudes compared to the ANI group (35.50) (P<0.05). There was no significant difference in the total score of salt-related dietary behavior between the groups. The score of nutrition knowledge was significantly higher in the ANI (9.77) group than in the ENI (8.82) group (P<0.05). The correlation analysis indicated that the urinary salt signal had a negative correlation with the salt-related dietary attitude score after adjustments for age, sex, and body mass index (r=-0.2100, P<0.05). These results support the validity of using the urinary salt signal to simplify estimation of sodium intake.

• Journal of Korean Biological Nursing Science
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• v.19 no.2
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• pp.51-59
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• 2017

Purpose: The purpose of this study was to identify the retention effects of an individualized dietary education program for hemodialysis patients on diet knowledge, diet self-care compliance, and physiological indices, thus to find the most effective time period for re-education. Method: This study utilized one-group repeated pretest-posttest design. The participants were 52 hemodialysis patients in C hospital, Gyeonggi-Do. Data were collected at 4 and 12 weeks after the education from January through April 2016. Results: There was significant increases in diet knowledge even 12 weeks after the education (p= .007). Diet self-care compliance showed a significant increase at 4 weeks (p= .001), but a decrease at 12 weeks after the education. The level of blood natrium was significantly decreased between 4 and 12 weeks after the education (p= .006). The weight was significantly decreased at 12 weeks after the education. Conclusion: It has been identified that re-education for hemodialysis patients should be implemented between 4 and 12 weeks after education in order to maintain patients' diet self-care compliance, an ultimate aim of diet education. By helping them with their self-care compliance, the patients would maintain their physical and psychological function optimally, thus contributing to a better quality of life among hemodialysis patients.

• Journal of the Korean Society of Food Science and Nutrition
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• v.44 no.7
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• pp.1007-1015
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• 2015

This study investigated the correlation between smartphone addiction and eating behaviors of 288 elementary school students (fifth and sixth grades) in the Ansan area. Addiction and normal groups consisted of 29 (10.1%) and 259 students (89.9%). Average usage time of the smartphone addiction group was higher than that of the normal group (P<0.001). Percentages of using a smartphone when eating meals as well as skipping meals due to using a smartphone were also higher in the addiction group than the normal group (P<0.01). Degree of reduction of physical activity and sleep disorders due to using a smartphone were higher in the addiction group than the normal group (P<0.001). However, nutritional knowledge related to protein and dietary life scored lower in the addiction group than the normal group (P<0.05). Correlation between smartphone usage time and eating behaviors was as follows: smartphone usage time on weekdays increased with elevated usage time on weekends in the addiction group (+0.742) (P<0.001) and the normal group (+0.762) (P<0.001). Frequency of snack intake in the addiction group increased with elevated usage time on weekdays (+0.460) (P<0.05). Sleeping time of the normal group decreased with elevated usage time on weekdays (-0.150) (P<0.05), and good eating behaviors decreased with elevated usage time the on weekend (-0.143) (P<0.05). Consequently, smartphone addiction in elementary school students showed negative eating behaviors. Therefore, effective nutritional education programs and national support policy are required to solve problems of unhealthy eating behaviors from smartphone usage in elementary school students.

• Proceedings of the Korea Society of Information Technology Applications Conference
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• 2001.05a
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• pp.31-36
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• 2001

KMS에서 지식전달 및 지식공유를 위한 커뮤니케이션 도구는 필수적인 요소지만 현재 국내 KMS에서 채택하고 있는 비실시간, 혹은 문자 중심의 커뮤니케이션 도구로는 지식전달 및 공유를 위한 조직원간의 커뮤니케이션 활성화가 불가능하다. 본 연구에서는 KMS의 커뮤니케이션 활성화를 위한 실시간 멀티미디어 인스턴트 메신저의 역할을 제시하였다. 제시된 KMS용 실시간 멀티미디어 시스템은 화상/음성통신, 문자/그래픽통신, 화이트보드통신, 화면공유, 그리고 에스코티드 브라우징과 같은 다양한 커뮤니케이션 방법을 제공하기 때문에 조직원간의 지식공유/전달, 공동작업, 그리고 사용자 편리성 및 접근성을 제공할 수 있을 것이다. KMS에서 지식전달 및 지식공유를 위한 커뮤니케이션 도구는 필수적인 요소지만 현재 국내 KMS에서 채택하고 있는 비실시간, 혹은 문자 중심의 커뮤니케이션 도구로는 지식전달 및 공유를 위한 조직원간의 커뮤니케이션 활성화가 불가능하다. 본 연구에서는 KMS의 커뮤니케이션 활성화를 위한 실시간 멀티미디어 인스턴트 메신저의 역할을 제시하였다. 제시된 KMS용 실시간 멀티미디어 시스템은 화상/음성통신, 문자/그래픽통신, 화이트보드통신, 화면공유, 그리고 에스코티드 브라우징과 같은 다양한 커뮤니케이션 방법을 제공하기 때문에 조직원간의 지식공유/전달, 공동작업, 그리고 사용자 편리성 및 접근성을 제공할 수 있을 것이다.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• autumn
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• pp.333-336
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• 2001

The future industry, intangible assets, like expertise, customer satisfaction, and employee's volition and capability, create more company value than any other components. The company's outcome mostly depends on managing these intangible knowledge assets. Construction industry is trying to adapt knowledge management system to manage their knowledge assets, but Hey do not build up knowledge assets definition and knowledge assets classification as much as other industries do. Most researches related knowledge assets classification are not concentrated on construction industry so it is need to define knowledge assets and establish knowledge assets classification of construction based on construction characteristics and informations. With this research result, construction knowledge assets classification can be the basis of knowledge asscts evaluation and knowledge map for knowledge management system.

• Journal of Educational Research in Mathematics
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• v.22 no.4
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• pp.517-534
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• 2012

As observing the learning of middle school mathematics students for three years, I examined the relationship between students' procedural knowledge and their conceptual knowledge as they develop those knowledges in the rational number domain. In particular, I explored the implications of an unbalanced development in a student's conceptual knowledge and procedural knowledge by considering two conditions: (a) the case of a student who has relatively strong conceptual knowledge and weak procedural knowledge, and (b) the case of a student who has relatively weak conceptual knowledge and strong procedural knowledge. Results suggest that conceptual knowledge and procedural knowledge are most productive when they develop in a balanced fashion (i.e., closely iterative or simultaneously), which calls into question the assumption that one has primacy over the other.