• The Journal of the Korea Contents Association
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• v.21 no.11
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• pp.814-825
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• 2021

The purpose of this study is to analyze the effect of teaching presence on academic achievement and learning satisfaction in the university online tutoring learning environment, and to find teaching methods for students' adaption of college life and their reinforcement of learning capabilities. In the study, the relationship between teaching presence, academic achievement and learning satisfaction were analyzed for those who participants in the tutoring program of the Busan D School OO Research Center during the first semester of 2021. As a result of the study, the relationship between teaching presence, academic achievement and learning satisfaction was indicated high correlation in the order of learning management, participation management and content structure of learning activities; the effect of teaching presence on academic achievement and learning satisfaction was found a significant effect in learning management, which is a sub-area of the tutees' learning activities. These results therefore suggest the direction of the operation process and method reflecting teaching presence, and provide an in-depth discussion on the learning management method that can improve the quality of the learner's learning experience in the learning environment.

• 한국체육학회지인문사회과학편
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• v.54 no.4
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• pp.257-269
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• 2015

The purpose of this study was to conduct content analysis on expression activity section in the physical education textbooks of 2009 curriculum revision and provide a basis for future middle school physical education. in order to accomplish the purpose of this study, 5 different kinds of physical education textbook. The physical education textbooks were examined through the comparative analysis and previous studies conducted for selections of the analysis bases. The results were as follows. First, textbooks devoted the space from 14.1 to 17.3%. In deployment and configuration of the section, each textbooks were used variety of methods, photographs and illustrations for motivations and advanced learning. Second, the instructional objectives were presented 4-6 each text book including expression activity concepts, understanding expression methods, personal competence reinforcement through creative activity, and watching performances. Learning contents were to focus on the concepts of aesthetic component in the esthetical expression, to highlight creative component in the modern expression, to express characteristic dances through understanding of the culture in the traditional expression. lastly, the middle assessments hight the understanding of each contents but small assessments focus on attitudes of character education.

• The Journal of the Korea Contents Association
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• v.22 no.5
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• pp.81-96
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• 2022

Covid-19 calls for minimizing gatherings of people in spaces such as offices. Organizations are encouraging information-sharing activities among employees by using online platform technology. Recently, Organizations are supporting their work using the metaverse. This study confirms the effect of metaverse presence on the intention to share knowledge by forming the intrinsic motivation of the employees and the moderating effect of the individual's digital technological competence. We presented research hypotheses through previous studies such as virtual reality and tested the hypotheses using 309 samples obtained through surveys. As a result, the social, tele, and self presence of the metaverse increased organizational-related intrinsic motivation(organizational identification, value congruence) and had a positive effect on the intention to share knowledge. In addition, digital technological competence moderated the relationship between value congruence and intention to share knowledge. This study suggests the importance of strategies to enhance the presence of metaverse for organizations to increase work productivity by using metaverse and the need to support individual digital competence reinforcement.

• The Journal of the Korea Contents Association
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• v.22 no.5
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• pp.542-552
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• 2022

The importance of the child-care teacher's job has recently been greatly emphasized due to changes in the transitional social environment, but the performance conditions are poor, requiring management of various job factors. For the purpose of providing information for practical application and institutional support related to child-care teachers, this study selected Flourish, Care that Respects the Rights of Child, and Job Crafting to verify the functional impact relationship and effectiveness. Since there are no domestic studies on child-care teachers using these variables, hierarchical regression analysis was performed on 223 child-care teachers to obtain initial information. As a result of the analysis, only the average difference between groups was found in terms of Flourish according to age and Negative Job Demand Reduction according to working hours. And it was found that the Enhancement of Social Job Resources had a moderating effect. Therefore, it is necessary to prepare a new job management strategy based on the information provided by this study and to develop a highly effective reinforcement program for each factor.

• Corrosion Science and Technology
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• v.6 no.4
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• pp.186-192
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• 2007

Carbonation is one of the most important factors causing the corrosion of reinforcement concrete. Nevertheless, experimental studies on the concrete carbonation have not been carried out sufficiently because of the slow process of carbonation process. Therefore, this study adopts an experimental system exploiting a vacuum instrument that has been recently developed to accelerate carbonation instead of existing experimental system to conduct rapid carbonation tests on Portland cement and fly-ash cement concretes. Test results revealed that, compared to water-cement ratio of 40%, the carbonation depth increases from 103% to 138% for an increase of water-cement ratio from 45% to 60%. These results are larger than the carbonation depths obtained by mathematical model, and such difference is increasing with larger water-cement ratios. The results also indicated that larger fly-ash contents lead to sharp increase of the carbonation depth, which is in agreement with previous experimental researches. The adoption of the new accelerated carbonation test system enabled to shorten effectively the time required to produce experimental data compared to the existing carbonation test method. The experimental data obtained in this study together with ongoing acquisition of data using the new carbonation test method are expected to contribute in the understanding of the carbonation process of concrete structures in Korea.

• Korean Security Journal
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• no.6
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• pp.327-340
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• 2003

As a countermeasure under accidental occurrence situation, First, as application form of martial arts, A security guard foster ability that can protect a target person of guard and own body under accidental occurrence situation through incessant martial arts practice. To achieve this purpose, incessant training mental power and physical strength reinforcement should be kept on to prevent, therefore make a safety control function for such as weapon, small arms, explosive, vehicles terror etc. happened under accidental occurrence situation. Second, according to the contents of training based on the classification category of martial arts for security guard under accidental situation, a security guard must keep safety distance necessarily lest a target person of gurad should be attacked by attacker, therefore, intercept an attack opportunity if a safety distance between a target person of guard and attacker is not kept. Third, It is to practice confrontation techniques based on the type of attack. A security guard must develp situation disposal ability that can cope properly with the attack using empty hands, murderous weapon, small arms, explosive by case or individual or mass of threat that impose danger and injury in a target person's body of guard.

• Advances in concrete construction
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• v.10 no.1
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• pp.1-11
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• 2020

This study intends to produce an ultra-high performance fibre reinforced concrete (UHPFRC) made with hybrid fibres (i.e., steel and polypropylene). Compressive and tensile strength characteristics of the hybrid fibres UHPFRC are considered. A total of 14 fibre-reinforced composites (FRCs) with different fibre contents or types of fibres were prepared and tested in order to determine a suitable hybrid fibre combination. The compressive and tensile strengths of each concrete at 7 days were determined. The results showed that a hybrid mix of micro-polypropylene and steel fibres exhibited good compromising performances and is the ideal reinforcement mixture in a strong, cost-effective UHPFRC. In addition, maximum compressive strength of 167 MPa was achieved for UHPFRC using 1.5% steel fibres blended with 0.5% macro-polypropylene fibres.

• Journal of Korean Academy of Fundamentals of Nursing
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• v.16 no.4
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• pp.421-429
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• 2009

Purpose: The aim of this study was to identify knowledge and attitudes on antibiotic use held by adolescents (middle and high school students) in Korea. Methods: Data were collected from a convenience sample of 651 students residing in 5 major cities in Korea. The questionnaire was developed after an extensive literature review and professional advisory meetings. Descriptive statistics, t-test, chi square test, ANOVA, and Pearson correlation coefficients with the SPSS program were used to analyze the data. Results: Respondents correctly answered 6.23 antibiotic-related questions out of 15 questions. Two thirds of the respondents knew viruses caused most colds and coughs, but 80% did not know that antibiotics do not work against viruses. High school students' attitudes towards antibiotics were somewhat negative. More middle school students than high school students asked doctors for antibiotics for a cold. High school students did not check if antibiotics were included in their prescription for a cold. There was no significant correlation between knowledge and attitudes towards antibiotic use. Conclusion: Education programs on appropriate antibiotic use need to be developed for these students. Continual reinforcement and repetition of the contents are required to change attitudes.

• Journal of Energy Engineering
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• v.23 no.3
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• pp.58-65
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• 2014

The study examined the post-monitoring programs under the energy efficiency labeling program in developed countries. This study suggests a few solutions to improve the post-monitoring activities under the program. First, samples should be selected from each category for the post-monitoring activities, taking account of the consumer's continuous buying behavior. Second, it is necessary to check of detailed label contents and to perform the frequent monitoring the reinforcement of the measurement of items which have violated labeling more than once over the past few years. Last, this study suggests that the entire post-monitoring process should be disclosed and be posted on the websites on the internet in general.

• Journal of the Korean Ceramic Society
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• v.45 no.8
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• pp.443-452
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• 2008

Shrinkage crack is a major concern for cement materials, especially for flat structures such as Korean On-Dol floor system, flooring for garages, and wall. One of the methods to reduce the adverse effects of shrinkage cracking is to reinforce cement materials with shot randomly distributed fibers. The efficiency of inorganic fibrous material to arresting cracks in cementitious composites was studied. Cement materials reinforced with five different qualities of inorganic fibrous material were tested. Contents of inorganic fibrous material were 1.0 kg, 1.5 kg, 2.0 kg, 2.5 kg, 3.0 kg by weight of cement mortar and C : S types of cement mortar were 1:3 and 1:4. W/C were 60% and 80%. Cement mortar of inorganic fibrous material reinforcement showed an ability to reduce the crack width and crack length significantly as compared to unreinforced cement mortar. $40%{\sim}60%$ drop in shrinkage crack of 1:4 cement mortar with 1.5 kg over was observed.