• Journal of Technologic Dentistry
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• v.27 no.1
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• pp.131-153
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• 2005

The purpose of this study was to identify the accidents happened in the college dental laboratory technique classes and to realize the level of safety education for the dental laboratory technique major students. The research data were collected from a self-administered survey distributed to the conveniently selected college students whose majors were dental laboratory technology in Suwon, Daejeon, Daegu, Kimcheon, and Icsan. The study participants were 422 freshmen, sophomore and junior students in the selected cities. All collected survey responses were encoded and analyzed in SPSS 12.0. The findings were as follows. 1. The students who had any accidents in their laboratory classes were 36% and the other 64% answered 'no.' 2. Most injuries which the participants had were not significant. 3. The medical treatment periods of most injury cases were less than one week; however, approximately 20% of the self-reported injury cases reported that their treatment periods were longer than one week. 4. The body parts frequently injured from accidents were hands with 84.7% and arms, eyes, face, head, and legs in order. 5. Concerning the materials involved in the laboratory classes, most accidents happened when working with wax in 59.9%, with plaster in 52.3%, with wire in 39.8%, with alcohol in 34.6%, and casting iron in 22.2% in order. 6. The accident-prone laboratory methods were polishing with 53.5%, pickling or sanding with 17.4%, and casting or burning with 5.8% in order. 7. Most students wore their laboratory gowns well; however, few students wore mask before dust-involved jobs. Furthermore, only 57.1% students answered their laboratory fans worked during the polishing job. 8. Approximately 54% participant students answered that they took laboratory safety education when necessary only from the class instructors. 9. The 76.1% students responded that they needed laboratory safety education at least 1-2 times every semester. 10. The survey participants answered that the primary factors for injury prevention in their laboratory were taking safety education, wearing safety equipments, and providing safety-focused facilities. Concludingly, comprehensive evaluation and monitoring for potential risk factors from both the human side and the environment side should be continually provided to minimize the college laboratory accidents.

• Journal of Korea Game Society
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• v.18 no.3
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• pp.49-60
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• 2018

In many countries, recently computer programming eduction has become mandatory for K-12 students. Generally since programming is difficult for K-12 students to learn, a lot of previous works have been published in which the study motivation and class satisfaction increased when game programming was applied to programming classes. We investigated a research in which we used game programming in the programming classes for middle-school students, and analyzed educational effects. In this paper, we described the specification of the games and our class model that were applied in the research. Also, we analyzed changes made to computation thinking abilities, creative thinking abilities, and perceived support for programming after the programming classes. As a result, it was found that those abilities and the perceived support were increased. Additionally, we applied Havruta learning, a kind of paired learning, in the programming class, and have known that it increased the educational outcome with respect to the traditional method.

• Journal of Digital Convergence
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• v.19 no.12
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• pp.587-595
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• 2021

This study investigates the relationships among empathy, career decision-making self-efficacy and learning flow of nursing students in non-face-to-face classes caused by a Pandemics. The subjects were 165 nursing students, analyzed the collected data using SPSS WIN 21.0. According to the study, empathy, career decision-making self-efficacy, and learning flow were a significant static correlation. The variables that significantly affect learning flow are major satisfaction and career decision-making self-efficacy, and explanatory ability is 22.7%. Based on this results, it is proposed to prepare a plan to advance major satisfaction and career decision-making self-efficacy in a non-face-to-face classes.

• The Journal of the Korea Contents Association
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• v.19 no.8
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• pp.565-571
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• 2019

This study aims to suggest more efficient ways of teaching English more related to but distinct from major English, based on the needs and awareness of the students of English Education Department. For this, interviews and surveys have been carried out targeting some English Education majors. The results show that the satisfaction level of students is relatively low, marking around the score '3'. While the satisfaction level about classroom environment including the multi-media equipment, and professors' teaching ability, quality and methods is higher compared with other factors, the improvement of English skills and interest-causing levels are lower on average. Besides, this study also includes the surveys on the needs of students for various teaching programs, differentiated classes and qualified instructors. Based on the results, this study makes three suggestions as follows; (1) the opening of some specific English classes for English-education majors (2) the development of English-conversation classes related to English-education majors (3) the development of communication-centered English reading based on English literature.

• Journal of the East Asian Society of Dietary Life
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• v.17 no.1
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• pp.11-19
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• 2007

This study was designed to evaluate Saturday nutrition classes for obese elementary students in Chungnam Province. Obesity index, nutrient intake, nutrition knowledge, nutrition attitude, and self-satisfaction of 36 obese elementary students were compared before and after attending nutrition classes every other Saturday for 3 months. The average age, height, weight, body fat, % body fat, and obesity index were 11.9 years, 145.5 cm, 53.3 kg, 24.5 kg, 45.7%, and 32.4%, respectively. Most of the subjects(94.5%) viewed themselves as fat. Sixty-three percent of children were discontent with their body-image. All answered that they have experience with weight control. The major methods of weight control were exercise and reduction of snacks. The mean serum cholesterol, blood glucose, GOT/GPT, and hemoglobin were 177.4 mg/dL, 90.4 mg/dL, 25.8/25.5 IU/L, 14.5 g/dL, respectively. After attending nutrition classes, the daily intakes of energy, plant protein, plant fat, carbohydrate, crude fiber, and cholesterol increased significantly. The scores for nutrition knowledge, nutrition attitude, and self-satisfaction also increased after nutrition classes, but there were no significant differences. Percent body fat decreased significantly after nutrition classes. In conclusion, nutrition education for elementary students is effective for the prevention and control of obesity. Further research is needed to develop a systematic program of nutrition education for obese children.

• Journal of Korean Library and Information Science Society
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• v.37 no.1
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• pp.329-352
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• 2006

This study investigated the background of the first and revised editions of the Han-Un Decimal Classification(HUDC), and analyzed their relationships to and influences on other major related classification systems. HUDC was compiled in 1954 and revised in 1981. HUDC was influenced by NDC in most classes of main classes and mnemonic schedules, and influenced by KDCP in the classes Religion, Language and Literature.

• Journal of the Korean Operations Research and Management Science Society
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• v.24 no.1
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• pp.39-48
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• 1999

An economic procedure of selective assembly is proposed when a product is composed of two mating components. The major qualify characteristic of the product is the clearance between the two components. The components are divided into several classes prior to assembly. The component characteristics are assumed to be independently and normally distributed with equal variance. The procedure is designed so that the proportions of both components in their corresponding classes are the same. A cost model is developed based on a quadratic loss function and methods of obtaining the optimal class limits as well as the optimal number of classes are provided. Formulas for obtaining the proportion of rejection and the unavailability of mating components are also provided. The proposed model is compared with the equal width and the equal area partitioning methods using a numerical example.

• International Journal of Reliability and Applications
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• v.2 no.2
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• pp.81-97
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• 2001

Lifetesting problems have been the subject of investigations for over three decades. Most suggested approaches are markedly different from those used in the related but wider goodness of fit problems. In the current investigation, it is demonstrated that a goodness of fit approach is possible in many lifetesting problems and that It results in simpler procedures that are asymptotically equivalent or better than standard ones. They may also have superior finite sample behavior. Several perennial classes are addressed here. The class of increasing failure rate (IFR) and the class of new better than used (NBU) are addressed first. In addition, we provide testing for a newer and practical class of new better than used in convex ordering (NBUC) due to Cao and Wang (1991). Other classes can be developed similarly and this point is illustrated with the classes of new better than used in expectation (NBUE) and harmonic new better than used in expectation (HNBUE).

• International Journal of Contents
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• v.18 no.3
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• pp.58-65
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• 2022

This study proposed a soft skill integration activity for online EFL classrooms and investigated student responses. Toward this end, this study recruited 54 college students taking an English Presentation and Discussion class in South Korea. Participants were assigned into high and low-proficiency groups based on the Test of English for International Communication. This study employed questionnaire, class video recordings, and interview to obtain responses. Moreover, problem-based learning with challenge questions was applied to develop soft skills in online synchronous classes. Responses were examined in terms of whether a difference existed according to English proficiency. Major findings of this study were as follows. Regardless of proficiency levels, participants reported improvements in their IT and problem-solving skills and exhibited positive attitudes toward live online presentations via Zoom. However, this study observed significant differences in communication and teamwork skills, perceived learning, and confidence. Interviews with students with low English proficiency levels revealed that they were negatively affected by the lack of non-verbal cues, mechanical skills, and socialization time provided by online classes. Based on these results, pedagogical implications and directions for future studies are discussed.

• Korean Security Journal
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• no.41
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• pp.97-121
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• 2014

A survey on effects of the participation style of martial art classes in students majoring in guard on both their major satisfaction and adapt to school lie was performed for 285 male and female students. The survey was carried out using a questionnaire on the participation style of martial art classes, degree of major satisfaction, and adapt to school life. Based on the survey, a correlation analysis was implemented to investigate effects of the martial art class participation styles on both major satisfaction and adapt to school life. Then, a multiple regression analysis was also performed. As a result, the sub-elements of the martial art class participation styles, such as the cooperative and participation styles, significantly affect the general satisfaction, class satisfaction, relationship satisfaction, and cognitive satisfaction in the major satisfaction. In the martial art class participation styles, the sub-elements, such as the cooperative, competitive, and participation styles, significantly affect the class, sociality, and adapt to school environments in adapt to school life. The sub-element of the major satisfaction, such as the general satisfaction, significantly affects the adaptations in class, sociality, and school environments in adapt to school life.