• Journal of the Microelectronics and Packaging Society
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• v.22 no.2
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• pp.21-26
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• 2015

Mesoporous ceramic materials were applied in various fields such as adsorbent and gas sensor because of low thermal conductivity and high specific surface area properties. This structure could be divided into open-pore structure and closed-pore structure. Although closed-pore structure mesoporous ceramic materials have higher mechanical property than open-pore structure, it has a restriction on the application because the increase of specific surface area is limited. So, in this work, specific surface area of closed-pore structure $TiO_2$ was increased by anneal time. As increased annealing time, crystallization and grain growth of $TiO_2$ skeleton structured material in mesoporous structure induced a collapse and agglomeration of pores. Through this pore structural change, pore connectivity and specific surface area could be enhanced. After anneal for 24 hrs, porosity was decreased from 36.3% to 34.1%, but specific surface area was increased from $48m^2/g$ to $156m^2/g$. CO gas sensitivity was also increased by about 7.4 times due to an increase of specific surface area.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.17 no.4
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• pp.63-75
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• 2018

A Service Area plays an important role in preventing accidents in advance by creating a space for long distance drivers or drowsy drivers to rest. Therefore, proper positioning of the expressway service area is essential, and it is important to analyze accurate demand forecasting and user travel behavior. Thus, this study analysis travel behavior and developed odel of the probability of using the service area by using the DSRC data collected by the RSE on the highway. According to the analysis, the usage behavior of highway service areas was most frequently when travel time was 90 minutes or more on weekdays and 70 minutes or more on weekends. The utilization rate of the service area estimated from the probability model of use of the rest area in this study was 1 % to 2 % error. The results of this study are meaningful in analyzing the behavior of the use of rest areas using the structured data and can be used as a differentiated strategy for selecting the location of rest areas and enhancing the service level of users.

• Journal of Digital Contents Society
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• v.16 no.2
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• pp.207-218
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• 2015

This study is to design and implement Smartphone application by applying the principles and processes of narrative therapy for the participants. The application is able for participants to fight out of the difficulty in question centered on the issue, and to be able to find a positive new stories to be evolving the story of their lives as well. Therefore, using the application will help them to live a healthier life out of the problems. As a way of currying the wounded heart of the youth, narrative therapy techniques were applied to Smartphone appliances accustomed to the youth. The youths' wounded minds will not only be easily cured but also can be a important factor in determining the direction of life. In this study, narrative flow was structured into four stages; relationships, externalization, creating new stories and strengthening the new story bsed on Doll & Doll' theory. Based on them, the Smartphone application for curing the wounded heart was designed and developed by utilizing narrative therapy techniques. The application was tested by 30 University students in Jeonbuk province in Korea and the results showed that they were satisfied with the application with relation to improving their heart health.

• Journal of dental hygiene science
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• v.16 no.3
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• pp.210-216
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• 2016

The purpose of this study was to examine the relationship between anger expression and self-esteem of female college students of dental hygiene. Participants were 598 female students who majored in dental hygiene from randomly selected colleges, located in Daejeon and Chungcheongbuk-do. Data were gathered from May 20 to June 5, 2014, using structured questionnaires. The major findings of the study were as follows: the correlation between anger expression and self-esteem was analyzed, and self-esteem was found to have a weak significant negative correlation with anger expression. On analyzing data to explore which variables affected self-esteem, it was found that self-esteem was influenced by grade, school record, harassment, language psychological violence, and bullying. The above-mentioned findings suggest that anger expression is related to self-esteem. After graduation from college, dental hygiene students, encounter a variety of interpersonal relationships in their work. Therefore self-esteem programs need to be developed and implemented at an individual, departmental, and collegiate level to help students learn to respect themselves and others, and to provide appropriate care.

• Journal of dental hygiene science
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• v.14 no.2
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• pp.256-263
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• 2014

The purpose of this study was to examine the relationship among burnout, compassion fatigue, compassion satisfaction and social support of clinical dental hygienists. The subjects in the study were 313 dental hygienist who were randomly selected in dental clinic and hospital, which were located in Daejeon, South and North Chungcheong province. Data were gathered using structured questionnaires from June 17 to July 31, 2013. The major findings of the study were as follows: 1. As for burnout by general characteristics, there were statistically significant difference according to age, marital status, clinical career, agency work type and job position. 2. The relationship of burnout and other variables was analyzed, and compassion fatigue had a significant positive effect on burnout, and compassion satisfaction and social support had negative effects on burnout. 3. As a result of analyzing which variables affected burnout, it's found that burnout were under the influence of agency work type, compassion fatigue, compassion satisfaction and social support. These variables made a 56.9% prediction of burnout. These findings provide strong empirical evidence for the importance of compassion fatigue, compassion satisfaction and social support in explaining burnout of clinical dental hygienists. Therefore, the effective human resource management programs should be developed to consideration with the dental hygienist work environment and the quality of service.

• Korea Journal of Hospital Management
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• v.6 no.3
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• pp.5-24
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• 2001

The purpose of this study was to serve as a basis for providing quality medical service and mapping out consumer-centered marketing strategies to successfully cope with the rapidly changing medical environment and meet consumer needs, by examining what affected the satisfaction and revisit of health Promotion center Client. The subjects in this study were 186 of visitor to health Promotion center in a university hospital in the city of Busan. A survey was conducted with structured questionnaire from March 2 to 30, 2001. The collected data were analyzed with SPSS for Windows (ver10.0). For more statistical analysis, frequency analysis, component analysis, t-test, ANOVA and correlation analysis procedures were utilized. Results of the study can be summarized as follows: 1. Regarding demographic characteristics, 51.6% of the Client investigated were male, and 48.4% were female. The greatest number of them were in their 40s(38.9%). 86.5% were married, and 34.2% were self-employed. 44% were a high-school graduate, and the monthly mean income of 59.4% was one to three million Won. And, the residential area of 46.8%, the largest percentage, was a half-an-hour distance from health Promotion center. 2. The most common motivation of their selection of the health Promotion center was a recommendation by Staff and neighborhood(59.7%), followed by excellent facilities and services(17.2%), the tradition and reputation of the hospital(7.5%), and its publicity pamphlets(7.5%). 3. 45.9%, the largest percentage, acquired health-related information from their friends or acquaintances. 43.8%, the greatest percentage, visited there because they felt there's something wrong with their body. 53.4% worried about the possibility of being attacked by cancer, and 57.5% wanted to take a precise cancer examination. For health maintenance, 50.1% got regular exercise. Regular exercise was considered most crucial for health maintenance or promotion. 4. The largest reason they used that examination center again was the kindness of employees(52.7%), followed by the tradition and reputation of the hospital(21%) and excellent examination setting and equipment(10.8%). 5. By demographic factor, there was no significant difference between the man and women in satisfaction level with examination and expenses. The women expressed more satisfaction at facilities, and the high-school graduate group were more contented with expenses. 6. As a result of investigating their satisfaction level according to the motivation of selecting that examination center, the group that chose the center due to excellent facilities and services were more satisfied with examination and expenses. 7. As for the relationship of total examination satisfaction to revisit. intention, there was a higher correlational relationship between total health examination satisfaction and expense satisfaction. Especially, the more they were satisfied with examination, the more they were willing to revisit there for another examination.

• Korean Journal of Health Education and Promotion
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• v.24 no.3
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• pp.61-71
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• 2007

Objectives: The research was conducted to evaluate the socio-demographic, life style and work related factors of stress and fatigue, and correlation between them in the white collar workers. Methods: This study was targeted on white collar workers of medium-sized company in Kimhae city including 249 people; 167 of males, 82 of females. The data was collected by structured questionnaires and analyzed using t-test, ANOVA, Pearson correlation and stepwise multiple regression with SPSS 12.0. Result: Both stress and fatigue levels were higher for female of gender, 20s of age, single of marital status in socio-demographic factors. The stress level was higher for current smokers and lower frequency of regular exercise per week, and both stress and fatigue levels were higher for unsatisfied sleeping in lifestyle factors. The stress level was lower for 5-day workweek system and experience of downsizing, and both stress and fatigue levels were higher far lower period of employment in work related factors. The correlation coefficient(r) between stress and fatigue level was 0.578, which was highly statistically significant. According to stepwise multiple regression analysis, factors affecting stress were unsatisfied sleeping, female and lower frequency of regular exercise per week, and those affecting fatigue were younger age and unsatisfied sleeping. Conclusion: This study provided strong support for associations between stress and fatigue, and we suggest that modifiable factors such as regular exercise and satisfied sleeping would be important for white collar workers to reduce their stress and fatigue.

• Journal of Korean Elementary Science Education
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• v.25 no.3
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• pp.296-306
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• 2006

The purpose of this study is to examine the effectiveness of the summer enrichment programs on Korean gifted students' science learning and creativity development. This program is organized by Purdue University Gilled Education Resource Institute (GERI) in U.S.A. Researchers conducted semi-structured interview with 6 Korean students and observed 12 Korean students and GERI teachers for teacher-student interaction and teaching strategies during science-related classes. From the results, GERI program developed from Purdue 3 stage enrichment model that emphasizes creative teaching strategies, group discussions, and individual research were effective to foster creative thinking of Korean gilled students. Despite their language barriers, Korean gilled students found GERI program experience fun, creative, easy, relaxing, and thereby satisfying for their psychological and academic needs. They expected the level of stimulation in GERI program to be higher and the class to be organized more systematically; however, they reported that the broad range of topics and diverse content of GERI classes helped them develop creativity more than Korean classes. These findings will make contribution to the improvement of the quality of gifted education curriculum and programming in Korea.

• Journal of the Korean earth science society
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• v.41 no.3
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• pp.273-290
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• 2020

This study aims to investigate tenth graders' understanding of the nature of scientific inquiry (NOSI). A total of 100 public school students participated. A questionnaire of Views about Scientific Inquiry was used to assess their understanding of the NOSI, and data were collected using qualitative research methods such as open-ended questionnaires and, when necessary, semi-structured interviews. By employing a constant comparison method to analyze their responses, five students were consistently categorized as the group with informed views regarding all the eight aspects of the NOSI. The rest of the students showed different levels of understanding regarding each aspect. A large portion of the students represented a group with mixed views about four aspects and informed views about three aspects, whereas naive views about one aspect prevailed among them. The results showed that many students comparatively lacked understanding of the aspect related to the scientists' process of constructing explanations and formulating theories. This study discusses the relationship between its results and the current science curriculum and presents implications for the overall enhancement of students' understanding of the NOSI. Finally, it encourages the acquisition of scientific inquiry ability and makes suggestions to promote further studies.

• Journal of The Korean Association For Science Education
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• v.32 no.5
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• pp.841-854
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• 2012

The purpose of this study is to investigate the teaching methods of prediction, inference, and hypothesis. The major data source was gathered by in-depth interview of science teachers (about 50-80 minutes for each interview). The interviews were conducted using semi-structured interview protocol, which consisted of three major parts: (1) Teacher's definition of prediction, inferences, hypothesis, (2) Teaching methods of prediction, inferences, and hypothesis and (3)Reasons of teacher's inaccurate perceptions of prediction, inference, and hypothesis. All the interviews were audio-taped and transcribed. Topics in the questions were categorized. The results were as follows: Teachers recognized the importance of prediction, inferences, and hypothesis. But they didn't have an accurate conception and they have great difficulty in classifying and explaining the prediction, inferences, and hypothesis. To find out the teaching methods, researcher investigated the inquiry activities, teaching times, usage of terms, teachers' questions, and teaching difficulties. Reasons for having difficulty were lack of teaching competency, difficulties from the students, and problems in the present curriculum. Finally, we discovered that the reasons for teacher's inaccurate perceptions of prediction, inference, and hypothesis were two factors. One is internal factors, which include the lack of scientific inquiry process skills, burdens of science subject and lack of science education knowledge. The other is external factors, which include education system for evaluations and lack of teacher education. In conclusion, this study suggested establishing more elementary teacher education programs that include strengthened concepts of inquiry process skills and teaching methods.