• Journal of Korean society of Dental Hygiene
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• v.18 no.5
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• pp.831-842
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• 2018

Objectives: This study was conducted to reveal the biological basis of dental plaque and preschool children's dental health status through repetitive and continuous toothbrushing instruction to preschool children, using quantitative criteria, and to emphasize the importance of the role of an oral health manager for the prevention of dental caries. Methods: After IRB approval, toothbrushing instruction and oral microbial specimen collection were conducted with children of preschool age at the Daycare Center attached to D. University, Busan. Specimens from 27 children were characterized by analysis with real-time multi-chain enzymatic polymerization reaction technique at an agency specializing in genetic analysis. Results: In a survey of the children's dental health behaviors, 48.1% responded that the toothbrushing time is 91 to 150 seconds; 66.7% responded that the frequency of toothbrushing is more than three times per day; 81.5% stated that they performed tongue brushing; and 81.5% brushed their teeth. Regarding levels of dental cariogenic bacteria, after children received continuous toothbrushing instruction, there were reductions in both Streptococcus mutans and Streptococcus sobrinus. Regarding toothbrushing time, the time increased in relation to the presence of instruction. Regarding Quigley Hein Index, the index decreased in the early and middle periods upon addition of instruction, then increased in the middle and later periods. Conclusions: Through persistent and repetitive toothbrushing instruction, healthy behavior can be positively established in children of preschool age; it is necessary to prepare institutional measures so opportunities for dental health education can be consistently provided and maintained. In the future, it will be necessary to conduct a follow-up study to verify the factors affecting toothbrushing time and volume of oral pathogens.

• Journal of Elementary Mathematics Education in Korea
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• v.16 no.3
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• pp.403-426
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• 2012

This paper analyzed 20 teaching practices of elementary mathematics lessons which were recognized as effective instruction by the local educational offices throughout Korea, using an analytic framework with 4 main domains (i.e., curriculum and content, teaching and learning, classroom environment and atmosphere, and assessment) and a total of 44 sub-elements. The results of this study showed that the lessons focused on the key mathematics concepts according to the national mathematics curriculum and learning objectives, managed students in terms of shared rules within each classroom, and evaluated students' understanding of the concepts at the end of the lesson. However, the lessons did not foster students' calculation skills and only partly used either technology or game. Building on the related studies, this paper included implications of implementing high-quality mathematics instruction.

• Journal of Korean society of Dental Hygiene
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• v.14 no.3
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• pp.417-424
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• 2014

Objectives : The purpose of the study is to develop and to evaluate the oral health education program using computer assisted instruction(CAI) for the elementary school students. This study was carried out from November, 2012 to February, 2013. Methods : The subjects were 188 elementary school students of the first, second, and third grades in Buk-gu, Busan. The education was provided as computer assisted instruction and conventional classroom education. Three trained dental hygienists recorded three times of knowledge of oral health, oral health attitude, oral health behaviors and the plaque control index(O'Leary index). Results : CAI group showed high score of oral health knowledge of 6.74 points, 8.62 points and 8.38 points(p<0.01). In oral health attitude, the scores were 7.40 points, 8.01 points, and 7.99 points(p<0.05). In oral health behavior, the scores were 5.47 points, 6.14 points, and 5.61 points(p<0.05). The plaque control index was 22.59 points, 19.69 points, and 21.44 points(p<0.01). Conclusions : CAI education program of this study showed the effective education for the elementary school students. So the CAI education program can be useful and disseminated to the community project.

• Journal of Korean Library and Information Science Society
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• v.42 no.4
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• pp.31-50
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• 2011

In education, evaluation is an important element because instructor can judge the growth and development of students, it has been to bring about quality improvement in education. Performance assessment has emerged to overcome traditional evaluation such as paper test, multiple choice test. Performance assessment is an approach to measuring a student's status based on the way the student completes a specified task. Information literacy instruction is aimed at cultivating information literacy. Performance assessment suitable for measurement to status of Information literacy. In order to performance assessment, task should have the first. However, instructor is difficult to develop a good performance task to meet the assessment needs. Therefore, this research aims at suggesting the developmental tool of performance task applicable to Information literacy instruction. The proposed tool is a template type, consists of 4 steps, educational goals and learning objectives, knowledge and capabilities, task types, measurement and scoring criteria.

• Journal of the Korean Society for information Management
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• v.25 no.4
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• pp.347-361
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• 2008

This study is to present cooperative instructional concept framework for the library-based instruction of teacher-librarians, based on 'Information and the Library' curriculum and instructional design procedure. The development of cooperative instructional units has been initiated in the school libraries, but the research based on instructional theories, including instructional design, is lacking. In this aspect, instructional theories and methodologies for the cooperative instruction of teacher-librarians are important. The cooperative instructional units for teacher-librarians should be developed by 'Information and the Library' curriculum and instructional design procedures. The objectives of the curriculum emphasize information use process based on information task. This study is to present cooperative instructional concept framework, and to help teacher-librarians develop specific cooperative instructional units based on the framework.

• The Journal of Korean Society for School & Community Health Education
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• v.11 no.2
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• pp.129-140
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• 2010

Objectives: The purpose of this study is to be conducive to selecting effective educational method for AED(Automated External Defibrillator) education through comparing educational effects between VSI(Video Self-Instruction) and lecturer-centered learning on AED(Automated External Defibrillator) in undergraduates. Method: This study targeted totally 76 undergraduates (39 people for experimental group, 37 people for control group) at J university where is located in J province, from June 8, 2009 to June 12. The analytical method was performed by using SPSS WIN 12.0 Version program. Results: In difference before and after education of the skill performance accuracy in AED between groups, the experimental group(2.89) was higher compared to the control group(2.75). In difference before and after education of knowledge in AED between groups, the experimental group(2.03) was higher compared to the control group(1.82). In difference before and after education of attitude toward AED between groups, the control group(2.14) was higher compared to the experimental group(1.85). In difference before and after education of self-confidence in AED between groups, the experimental group(1.88) was higher compared to the control group(1.76).

• Journal of Korean society of Dental Hygiene
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• v.12 no.1
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• pp.189-200
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• 2012

Objectives : The purpose of this study was to examine what teaching behavior would have a good effect on learners in lecture-style instruction in the department of dental hygiene. Methods : The subjects in this study were 650 students who were in the three-year department of dental hygiene at four colleges in Gyeonggi Province and Chungcheong Province. After a survey was conducted, frequency analysis and ANOVA were utilized to analyze the collected data. The findings of the study were as follows. Results : The students put the highest value on knowledge among the factors of teaching behavior irrespective of their academic year, academic standing and learning style, followed by skills and attitude. Out of every subfactor, they set the highest value on a sense of humor regardless of their academic year, academic standing and learning style, and put the lowest value on the attitude factor such as enthusiasm. There were differences among the students in evaluation of the factors of teaching behavior according to academic year, and the students whose academic year was higher set a higher value on the factors of teaching behavior. There were no differences according to their academic standing and learning style. Conclusions : The dental hygiene students viewed the knowledge factor as the effective factor of teaching behavior, and regarded a sense of humor as the best subfactor. Although the attitude factor like enthusiasm is important, it seemed that the students hoped for the kind of instruction that would be delightful, intriguing and clearly convey what to learn.

• Journal of the Korean Society for Library and Information Science
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• v.41 no.2
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• pp.387-412
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• 2007

Recently, countries have recognized the significant to instruct the information literacy to library users so that they can positively and actively use the information. However, among the courses of library and information science in the colleges of South Korea which educate the potential librarians, few courses have the objectives to make the students obtain the abilities to teach the information literacy in the future. Since this lack of appropriate educations is reflected on the fields of library, the librarians have many difficulties in preparing for and performing user instructions. As an alternative solution for this problem, this study suggests opening a course, information user instructions, in the curriculum of library and information science of the colleges in South Korea and concretely demonstrated the curricular model. Also the course syllabus displays when this course would open.

• Restorative Dentistry and Endodontics
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• v.38 no.2
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• pp.73-78
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• 2013

Objectives: This study evaluated the effect of three different air-drying times on microleakage of three self-etch adhesive systems. Materials and Methods: Class I cavities were prepared for 108 extracted sound human premolars. The teeth were divided into three main groups based on three different adhesives: Opti Bond All in One (OBAO), Clearfil $S^3$ Bond (CSB), Bond Force (BF). Each main group divided into three subgroups regarding the air-drying time: without application of air stream, following the manufacturer's instruction, for 10 sec more than manufacturer's instruction. After completion of restorations, specimens were thermocycled and then connected to a fluid filtration system to evaluate microleakage. The data were statistically analyzed using two-way ANOVA and Tukey-test (${\alpha}$ = 0.05). Results: The microleakage of all adhesives decreased when the air-drying time increased from 0 sec to manufacturer's instruction (p < 0.001). The microleakage of BF reached its lowest values after increasing the drying time to 10 sec more than the manufacturer's instruction (p < 0.001). Microleakage of OBAO and CSB was significantly lower compared to BF in all three drying time (p < 0.001). Conclusions: Increasing in air-drying time of adhesive layer in one-step selfetch adhesives caused reduction of microleakage, but the amount of this reduction may be dependent on the adhesive components of self-etch adhesives.

• Korean Journal of Health Education and Promotion
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• v.26 no.2
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• pp.25-33
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• 2009

Objectives: Smoking is related to periodontal disease and periodontal therapy. So the aim of this study was to investigate the effects of professional tooth cleaning and plaque control instruction (PT & PCI) for smoking behavior. Methods: A total of 151 adults were investigated using the O'Leary Plaque Index (PI), $L\ddot{o}e$ & Silness gingival index (GI) and the number of sextants possessing periodontal pocket (SPP). And adults were given a through dental scaling and Watanabe method for dental plaque control. Follow up examination were conducted after 3 months and compared the pre and post- status. The collected data were analyzed with t-test, paired t-test and one-way analysis of variance. Results: Regardless of smoking behavior, improving effects were identified after PT & PCI on PI, GI and SPP in the whole population. However, the effects of GI improvement were significant in the smoking group alone; those of PI improvement were most significant in the non-smoking group; and those of SPP improvement were more significant in non-smoking and pre-smoking groups than in the smoking group. The shorter period of smoking and the smaller amount of smoking, the greater effects of PT & PCI by smoking-related characteristics. Conclusion: Smoking cessation instruction should necessarily be included in oral health education in that smoking is an important factor to consider in prevention of periodontal diseases and periodontal therapies.