• Journal of the Korean Home Economics Association
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• v.33 no.1
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• pp.19-32
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• 1995

The purpose of this study is to investigate the consumer safety problems appeared in the Korean mass media-the newspaper(the Kong-A Ilbo and the Chosun Ilbo) and the consumer magazines(the Sobija-Sidae and the Sobija) from 1991 to 1993. I use the content analysis of the articles related with consumer safety through the above mass media. The results are (1) the goods-services areas that are severe in the consumer safety problem are food, environment, medicine, electric appliances, services(restaurant, medical service), and etc. (2) the most important problem areas are Toxic ingredients(remaining agricultural chemicals and heavy metal), Food additionals, Sanitary problem, Hygiene products hazard, Safety accident, Environmental pollution, etc. (3) the goods-service area and the consumer safety problem are different according to the publication year and the mass media type.

• Journal of the Korean Mathematical Society
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• v.57 no.5
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• pp.1079-1101
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• 2020

This work is concerned with a geometric inverse problem in fluid mechanics. The aim is to reconstruct an unknown obstacle immersed in a Newtonian and incompressible fluid flow from internal data. We assume that the fluid motion is governed by the Stokes-Brinkmann equations in the two dimensional case. We propose a simple and efficient reconstruction method based on the topological sensitivity concept. The geometric inverse problem is reformulated as a topology optimization one minimizing a least-square functional. The existence and stability of the optimization problem solution are discussed. A topological sensitivity analysis is derived with the help of a straightforward approach based on a penalization technique without using the classical truncation method. The theoretical results are exploited for building a non-iterative reconstruction algorithm. The unknown obstacle is reconstructed using a levelset curve of the topological gradient. The accuracy and the robustness of the proposed method are justified by some numerical examples.

• Phonetics and Speech Sciences
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• v.5 no.4
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• pp.211-216
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• 2013

The IVA(Independent Vector Analysis) is a well-known FD-ICA method used to solve the frequency permutation problem. It generally works quite well for blind source separation problems, but still needs some improvements in the frequency bin permutation problem. This paper proposes a post-processing method which can improve the source separation performance with the IVA by fixing the remaining frequency permutation problem. The proposed method makes use of the correlation coefficient of power ratio between frequency bins for separated signals with the IVA-based 2-channel source separation. Experimental results verified that the proposed method could fix the remaining frequency permutation problem in the IVA and improve the speech quality of the separated signals.

• Korean Journal of Human Ecology
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• v.21 no.6
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• pp.1083-1094
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• 2012

The purpose of this study was to investigate the gender difference in adolescent's problem behavior and depression, and to analyze the effects of marital conflict, parenting behavior, parent's monitoring on adolescents' problem behavior and depression. Data obtained from 453 students in middle school was used for final analysis. This study found that female adolescents showed higher level of depression than male adolescents. Male adolescents reported higher level of marital conflict than female adolescents. On the other hand, female adolescents showed more mother's monitoring than male adolescents. Path analysis revealed that parenting behavior and parent's monitoring were negatively influenced by marital conflict. Adolescents' depression was negatively influenced by parenting behavior, but problem behavior was not influenced by parenting behavior. Father's monitoring had an impact on problem behavior of male and female adolescents. Depression was influenced directly by marital conflict, but problem behaviors were not directly influenced by marital conflict.

• Journal of Korean Academy of Nursing
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• v.7 no.1
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• pp.1-9
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• 1977

Primary function of health record is that as tool of communication between the health processionals with the mutual goal, the promotion of health care standard. Studies have been carried out world over oil tile subject, among those, Weed's Problem-Oriented Health Record is considered a paramount achievement. This study was designed to assess tile possibility of implementing tile problem-oriented health record system through ail experiment in order to provide data for nurse administrators infiltrating reformation of recording system and format. Record of 29 patients admitted at Korea University Hospital, Seoul, from March through June, 1976 for 4 to 14 days were sampled. Nursing notes were recorded by research assistants; senior nursing student trailed extensively by the researcher oil Problem-Oriented Records, oil Problem Oriented Nursing Record format (experimental group) and analysis were carried out comparative, with that of traditional nursing records noted by other nursing personnel (control group) on the same patient. Attitude towards Problem Oriented Nursing Record system and format were attained through questionaries responded by the 51 research assistants. Results are as fellows: Comparative analysis revealed that: 1. Assessment of patients' health problems recorded significantly more in traditional records. 2. Focus of health Problem differed; traditional records slowed significantly higher frequency in medical and procedure as focus while problem oriented records on nursing focus problems. 3. Problem- Oriented records were better organized, Mean value scores of attitude towards Problem- Oriented Records revealed that: Positive value scores on all 4 categories: 1) Assessment of nursing needs, 2) Nursing care planning 3) Patient progress assessment and 4) Tool of teaching and learning revealed that the Problem-Oriented Nursing Record is positively accepted by tile respondents. Recommendation Further experiments on implementation of Problem- Oriented Health Record are recommended: experiment involving all health professionals, in larger scope and longitudinal.

• Journal of the Korean School Mathematics Society
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• v.15 no.3
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• pp.411-428
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• 2012

There is no single definition of mathematical creativity. But creativity is a key competency to adapt and live in the future. So, there are so many attentions to develop students' mathematical creativity in school mathematics. In special, mathematical problem posing activity is a good method in enhancing mathematical creativity. The purpose of this paper is to analyse on the students' mathematical creativity using problems which are made by students in problem posing activities. 16 children who consist of three groups(high, middle, low) are participated in this study. They are trained to make the problem by Brown & Walter's 'What if not' strategy. The results are as follows: Total creativity is proportional to general achievement levels. There is a difference total creativity between items contents. The number of problems differs little according to the general achievement levels. According to the qualitative analysis, students make the problems using the change of terms. And there is no problem to generalize. Based on this paper, I suggest comparing the creativity between problem posing activity and other creative fields. And we need the deeper qualitative analysis on the students' creative output.

• Journal of Convergence for Information Technology
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• v.9 no.2
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• pp.49-54
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• 2019

University education emphasizes the development of convergent as well as computational thinking, many universities provide software education to improve their problem-solving ability. In this study, we use Python programming based on problem-solving learning, and analyze the correlation between problem-solving learning satisfaction and academic achievement. A questionnaire survey was conducted among 143 students, we tried to analyze the relationship of problem-solving learning with actual academic performance using correlation and multiple regression analysis. The results indicate a relationship between satisfaction and academic achievement, and that it affects students' academic achievement. The ability to identify various problem situations and solve problems using computational thinking will become increasingly important, it is desirable that the universities provide software education based on problem-solving learning.

• Journal of the Korean Society for Aviation and Aeronautics
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• v.30 no.4
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• pp.169-183
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• 2022

This study aimed to analyze the class effect of subjects to which Problem-Based Learning is applied to college students majoring in aviation service at university in Chungcheong. And we derive implications for continuously operating Problem-Based Learning classes. For the study, <Service Manners and Practice>, <Theory of Air Reservation Operation & Practice>, and <Introduction to In-flight Food & Beverage> were selected among the courses opened in the first semester of 2022. This study analyzes changes in communication competence, interpersonal skills, self-directed learning skills, higher-order thinking skills, information technology application skills, and problem-solving skills reflecting the core competencies of the universities to which the study students belonged. First, we analyzed the changes in communication competence, interpersonal skills, self-directed learning skills, higher-order thinking skills, information technology application skills, and problem-solving skills before and after classes by reflecting on the core competencies of the universities to which the study students belonged. As a result, all item except for interpersonal skills were improved. In addition, a qualitative analysis was conducted on the degree of learning improvement based on the contents of the reflection journal written during learning precess. As a result of the analysis, it was confirmed that it is effective for learning abilities such as communication, interpersonal relationships, self-directed learning skills, utilization of information, and problem-solving.

• Journal of Korean Academy of Nursing
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• v.48 no.1
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• pp.109-121
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• 2018

Purpose: This study was conducted to examine the longitudinal effects of parenting stress and parental control attitudes on problem behaviors in preschool children, using a latent growth model. Methods: Participants were 1,724 pairs of parents and 1,724 preschool children who had completed the panel survey on Korean children ($5^{th}{\sim}7^{th}$ survey panels). Results: An analysis of the multivariate latent growth model of parenting stress, parental control attitudes, and children's problem behaviors suggested that the parents' intercepts for parenting stress influenced their intercepts for parental control attitudes (father: ${\beta}=.21$, p<.001; mother: ${\beta}=.55$, p<.001). In addition, the slopes for fathers' parenting stress was the only aspect that affected the slopes for mothers' parental control attitudes (${\beta}=.77$, p<.001). Moreover, both the intercepts and slopes of parenting stress and parental control attitudes significantly affected the children's problem behaviors. Conclusion: This study is significant as it provides longitudinal evidence of the impact of parenting stress and parental control attitudes on children's problem behaviors. The findings suggest that accurately assessing changes in parenting stress and parental control attitudes and developing intervention programs to reduce them will be effective in reducing problem behaviors in children.

• Journal of the Korean Home Economics Association
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• v.44 no.12
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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.