• International Journal of Advanced Culture Technology
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• v.9 no.4
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• pp.226-236
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• 2021

The purpose of this study is to analyze the type of latent profile for general high school students' subject selection criteria and to identify the characteristics of the latent class. The survey data of 1072 general high school students (male; 648, female; 424) in G city, Jeollabuk-do and the scale composed of 8 sub-factors: 'SAT orientation', 'academic achievement', 'ability orientation', 'pursuit of interest', 'teacher orientation', 'career development', 'others' recommendation', and 'subject availability' were used for latent profile analysis and cross-analysis between potential layers. As a result of the analysis, high school students' perceptions of subject selection were classified into four latent profiles. The four groups were named 'High Perception Type', 'Low Perception Type', 'Self-Directed Type', and 'Stability-Oriented Type' according to their types. It was found that there was a difference between the latent classes in the importance and performance level of the subject selection criteria. These results can help identify the subject selection tendencies of latent groups in the operation of the 2015 revised curriculum and the 2025 high school credit system that emphasizes the student-centered course selection curriculum and they can also provide customized course selection guidance considering individual differences.

• East Asian mathematical journal
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• v.39 no.2
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• pp.93-117
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• 2023

The aim of this study is to explore the pre-service math teachers' characteristics of education to develop their AI literacy and SW competency, and to derive some implications. We conducted a 14-hours AI and SW education program for pre-service teachers with theory and practice, and an analysis on class observation data, video frames of classes and interview, Python programming assignments and papers. The results of this case study for 3 pre-service teachers are as follows. First, two students understood artificial neural network and deep learning system accurately, furthermore, all students conducted a couple of explorations related with performance improvement of deep learning system with interest. Second, coding and exploration activities using Python improved students' computational thinking as well as SW competency, which help them give convergence education in the future. Third, they responded positively to the necessity of AI literacy and SW competency development, and to applying coding to math class. Lastly, it's necessary to endeavor to give a coding education to the student's eye level according to his or her prerequisite and to ease the burden of student's studying AI technology.

• Proceedings of the Korean Society of Computer Information Conference
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• 2021.07a
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• pp.313-315
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• 2021

Timely and accurate diagnosis of lung diseases using Chest X-ray images has been gained much attention from the computer vision and medical imaging communities. Although previous studies have presented the capability of deep convolutional neural networks by achieving competitive binary classification results, their models were seemingly unreliable to effectively distinguish multiple disease groups using a large number of x-ray images. In this paper, we aim to build an advanced approach, so-called Ensemble Knowledge Distillation (EKD), to significantly boost the classification accuracies, compared to traditional KD methods by distilling knowledge from a cumbersome teacher model into an ensemble of lightweight student models with parallel branches trained with ground truth labels. Therefore, learning features at different branches of the student models could enable the network to learn diverse patterns and improve the qualify of final predictions through an ensemble learning solution. Although we observed that experiments on the well-established ChestX-ray14 dataset showed the classification improvements of traditional KD compared to the base transfer learning approach, the EKD performance would be expected to potentially enhance classification accuracy and model generalization, especially in situations of the imbalanced dataset and the interdependency of 14 weakly annotated thorax diseases.

• Journal of Elementary Mathematics Education in Korea
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• v.24 no.3
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• pp.279-297
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• 2020

The purpose of this study is to find ways to establish and operate Process-focused Assessment in the classroom as the 2015 revised curriculum has emerged. As a way of doing so, we proposed a Process-focused Assessment through self-assessment and looked at the impact of the applied classes on the mathematical academic performance and affective domain of fifth-grade elementary school students. After selecting two classes of fifth grade with proven homogeneity for research, the experimental group applied Process-focused Assessment through self-assessment and the teacher-led Process-focused Assessment to the comparative group. As a result, it was confirmed that the classes applying Process-focused Assessment through self-assessment significantly improved the math and academic performance of fifth-grade elementary school students. The affective domain of the experimental group did not change significantly, but the analysis of the students' comments and interview data showed that they had more interest and confidence in mathematics.

• Journal of Korean society of Dental Hygiene
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• v.10 no.3
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• pp.449-457
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• 2010

Objectives : This study was performed to investigate the recognition of the educators in preschool education institutions on children's oral health promotion. Methods : The subjects of this study included 918 preschool teachers who have been performing an oral health education program for children at preschool centers in Seoul. For this study, the survey was conducted from September 2008 to November 2008 through a questionnaire. Results : It has been found that 58.5% of the given preschool institutions have implemented an oral health promotion program and 99.1% of the respondents recognized the importance of the oral health. 53.9% of the respondents used sweets as a reward for good deeds. Regarding the behaviors of oral health promotion, the daily tooth-brushing and the implementation of a regular oral check-up accounted for 69.0% and 59.5% respectively. The subjects recognized that they have responsibility for the tooth-brushing instruction(91.6%) and provision of an oral inspection(78.3%). It has been also found that the case of performing the oral health program with older age and higher work experiences was significantly high(p<0.05). Conclusions : The recognition and performance of kindergarten teachers on children's oral health affects daily life and healthful living habits of children. Therefore oral health education program for the teachers has to be developed.

• The Journal of the Korea Contents Association
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• v.16 no.7
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• pp.190-206
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• 2016

This study explores the meaning of life insurance planner's job experiences achieving job security, high performance and high income. After 6 of life insurance planners working in the field were chosen as the study participants, we use narrative approach to studying the meaning of their job experiences. The study shows that perception about job competency of planners depends on the level of experience: candidates who had no experience at all feel that anyone can perform planner's job, new employees after introduction training program see planners can do with product knowledge and consulting competency, and experienced people admit they can perform successfully only when they have good attitude towards customers and do all their work in a conscientious manner. Also, the meaning of planner's job experiences is identified as awareness of work value and serving customers with their commitment. The anticipated factors that make planner's job performed successfully are playing a role as a teacher, doctor, and angel, being regarded as happiness preacher for economic stability of individuals and families, and displaying their performance as experts.

• The Journal of the Convergence on Culture Technology
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• v.6 no.4
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• pp.339-345
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• 2020

This study intended to analyze pre-service elementary teachers' perceptions of teacher knowledge based on the Technological, Pedagogical, and Content Knowledge (TPACK) framework. Seventy-four pre-service elementary teachers who were enrolled at an University of Education located in mid-continent of Korea participated in a survey. Results of the survey was analyzed using Importance-Performance Analysis (IPA) method. It was found that perception of importance was significantly higher than that of performance at all seven domains of the TPACK. IPA matrix extracted from the survey indicates that Technological Content Knowledge (TCK), Technological Pedagogical Knowledge (TPK), and TPACK which are related to technology especially need to develop. Results of this study also show the necessity to support pre-service teachers so that they can have opportunities to develop and use technology-related knowledge and skills. This study especially implies that technological knowledge needs to be integrated with content and pedagogical knowledge when implementing curriculum and educational programs for pre-servie elementary teachers.

• Journal of Korean Home Economics Education Association
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• v.27 no.2
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• pp.95-119
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• 2015

This study discussed the major notion of backward design placing emphasis on performance and evaluation, and clarified the concepts of 'understanding' and 'enduring understanding' based on the literature of Wiggins and McTighe and previous studies. This study also developed a sample curriculum module for a consumer unit for 7 class hours based on the 'Understanding by Design' template. This study concluded that backward design can contribute to achieving student's high performance from evaluation planning prior to actual instruction, to utilizing learning with higher order thinking and skills by analyzing key concepts, and to reconstructing curriculum contents considering a teacher's perspective, students' needs, and each school's situation and context.

• Journal of Elementary Mathematics Education in Korea
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• v.16 no.1
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• pp.63-95
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• 2012

Since performance assessment was implemented for 10 years, a survey has been carried out from 212 elementary school teachers in Seoul area in terms of their perception and status about descriptive assessment. As results, most of teachers agreed strongly that using constructed-response items is necessary for assessment, and they showed that purpose of using constructed-response items in their mathematics classrooms was to evaluate accurately student achievement in accordance with learning objectives in mathematics and they referred mainly to items which they modified from problems or items in the textbook when they generate constructed-response items. In addition, they considered level of difficulty in creating constructed-response items mostly. Moreover, they indicated that the effects of assessment through constructed-response items would be improvement of students' problem solving and reasoning skills.

• The Journal of Sustainable Design and Educational Environment Research
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• v.19 no.4
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• pp.50-59
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• 2020

Integrated operation schools were introduced to Korea in 1998 with an operation of eight schools, and their number has now increased to 106 and is still growing. Although various problems have been pointed out in research on integrated operation schools over the past two decades, these have not been reflected today. Therefore, the purpose of this study was to comprehensively summarize the concepts, backgrounds, recent status, types, etc. of the integrated operation school and to present its problems in terms of curriculum, teacher management, student management, operation and management of educational facilities, and law and policy through literature review and to propose measures for improvement. This allowed us to compare the concerns of the integrated operation school with the results of the actual research and organize improvement measures.