• 디지털산업정보학회논문지
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• 제17권4호
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• pp.197-207
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• 2021

The threat of COVID-19 pandemic put many universities in Korea to develop and implement various types of non-face-to-face on-line classes, such as on-line real time class and on-line recorded video class. Online education has been recognized as one of the effective educational methods because of its ubiquitous and flexible educational environments. Even though COVID-19 led to many problems such as faculty's burden and stress during the early stage of COVID-19, both students and faculties have gradually become familiar with on-line environment. As students have got accustomed to the online environment, on-line recorded lectures are shown to be more preferred rather than on-line real time class. Researches regarding the learner's satisfaction of on-line classes during the COVID-19 indicate that systematic and good quality contents and interaction by instructor are important factors. This study, therefore, investigate the learner's satisfaction of online classes in Liberal Arts course using recorded video contents in terms of contents and interaction. The results of empirical analysis reveal that systematic and good quality contents are likely to predict learner's satisfaction and interaction plays a great role in providing those contents. These findings provide insights that preparing systematic contents and interaction are key to enhancing learner's satisfaction of on-line classes in Liberal Arts course.

• International Journal of Computer Science & Network Security
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• 제22권3호
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• pp.29-36
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• 2022

In deep learning classification tasks, most models frequently assume that all labels are available for the training datasets. As such strategies to learn new concepts from unlabeled datasets are scarce. In fingerprint classification tasks, most of the fingerprint datasets are labelled using the subject/individual and fingerprint datasets labelled with finger type classes are scarce. In this paper, authors have developed approaches of classifying fingerprint images using the majorly known fingerprint classes. Our study provides a flexible method to learn new classes of fingerprints. Our classifier model combines both the clustering technique and use of deep learning to cluster and hence label the fingerprint images into appropriate classes. The K means clustering strategy explores the label uncertainty and high-density regions from unlabeled data to be clustered. Using similarity index, five clusters are created. Deep learning is then used to train a model using a publicly known fingerprint dataset with known finger class types. A prediction technique is then employed to predict the classes of the clusters from the trained model. Our proposed model is better and has less computational costs in learning new classes and hence significantly saving on labelling costs of fingerprint images.

• 대한치과기공학회지
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• 제44권4호
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• pp.132-143
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• 2022

Purpose: The study aims to analyze differences in the satisfaction level of dental technology students regarding in-person and online classes. It also aims to provide fundamental resources for the improvement of major subject class methods that will improve students' self-directed learning abilities, thereby affecting their class satisfaction. Methods: In this study, a self-administered questionnaire was conducted from November 8 to November 30, 2021, for 256 dental technology students. The collected data were analyzed using the IBM SPSS Statistics ver. 21.0 statistical program. Frequency and percentage, mean, standard deviation, t-test, ANOVA, post-hoc test, correlation analysis, and linear regression analysis were performed to analyze the data. Results: In the self-directed learning abilities, the attitude of the learners was shown to have the highest positive (+) correlation in both in-person and online classes, with a statistically significant effect (p<0.001) on class satisfaction in major subject classes. Moreover, the explanatory power of the model was 52.2% and 39.7%, respectively. Conclusion: We concluded from the study that there is a need for professors to improve teaching methods to increase learners' self-directed learning competence, through problem-based learning, discussion learning, team-based collaborative learning, and mentor-mentee learning, thereby enabling learners to lead classes themselves.

• 대한방사선기술학회지:방사선기술과학
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• 제45권6호
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• pp.531-541
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• 2022

This study surveyed 233 students who experienced non-face-to-face and face-to-face classes in "86 first-year, 76 second-year, and 71 third-year students" enrolled in the radiology department of universities in the Seoul metropolitan area. The main question of questionnaire consisted of a total of 14 questions, including online lectures and face-to-face lectures, use of electronic devices during classes, students' thoughts on flipped learning methods, and finally, whether it was helpful for students who were unable to participate in face-to-face classes due to COVID-19 to take classes online. The responses were composed optional to select the content of the questionnaire and descriptive to obtain open thinking from students. Comparing the significance level of responses of second and third graders based on the first graders, p>0.05 for second graders and p<0.05 for third graders, showing a significant difference in satisfaction with third graders who were greatly damaged by COVID-19 and freshmen. In conclusion, even in a situation where face-to-face lectures can be conducted, it is considered beneficial for students to conduct online lectures and face-to-face lectures according to the method of the major subject.

• 한국정보교육학회:학술대회논문집
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• 한국정보교육학회 2021년도 학술논문집
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• pp.341-348
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• 2021

펜데믹 시대가 도래하면서 비대면 수업이 실시되고 있으며, 많은 교과에서 비대면 수업의 효과에 대한 연구도 많이 진행되고 있다. 특히, 프로그래밍 수업은 지식 전달과 실습을 겸하는 특성을 가진 과목으로 비대면 수업의 경우에 학생들의 인식면에서 어떤 특성을 보여주는지 알아보기 위하여 비대면 수업과 대면 수업을 각각 실시한 후에 학생들에게 설문 조사하였다. 수업에서의 질문과 응답 용이성, 수업 내용의 이해 및 수업에의 몰입에서는 전통적인 대면 수업이 좋다고 응답한 학생수가 많았으며, 실습 시간 확보 및 수업 제어 면에서는 비대면 수업이 좋다고 응답한 학생수가 많았다. 이와 같은 연구 결과를 활용하면 효과적인 프로그래밍 수업을 계획하는데 도움이 될 수 있을 것으로 기대된다.

• International Journal of Advanced Culture Technology
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• 제12권1호
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• pp.20-25
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• 2024

The qualitative effect of class is influenced by the instructor's class design and operation method, but it comes from motivating students to actively participate in class and utilizing potential qualities that lead to student-centered learning. Students' activities and the quality development of class participation can be utilized in presentation-based classes. This could be confirmed through the presentation classes in English language curriculum applied to English major students in Korea. In other words, with presentations conducted in language-theoretic classes such as phonetics/phonology, and syntax, it turned out that immersion in learning, concentration on class, and motivation for learning can be improved, developing systematic self-directed learning ability and cooperative mutual communication ability. Instructors need to lead the direction and design of the classes, but the actual educational effect depends on how students accept the academic tasks, how well they understand the learning contents, and how well they can systematically transmit them to others. In this respect, this study aims to investigate that learner-centered presentation classes contribute to making learners develop their competencies in class design, data utilization, imparting knowledge, and communication, which would bring about the improvement of learning quality and educational effects.

• 문화기술의 융합
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• 제7권1호
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• pp.284-290
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• 2021

본 연구는 온라인 비대면 영어 수업의 효율성을 파악하여 포스트 코로나 시대에도 지속 가능한 온라인 비대면 수업의 확장 가능성과 온라인 비대면 영어 수업이 한 단계 더 발전해서 나가야 할 방향에 대해 교육학적 제언을 제시하고자 하였다. 이를 위해 줌을 활용한 온라인 비대면 영어 독해 수업 사례를 소개하고 이것이 학습자들의 독해 학습에 미치는 영향을 조사하였고, 이에 대한 학습자들의 만족도와 그 이유를 분석하였다. 연구 결과 온라인 비대면 영어 수업은 학습자들의 독해 학습에 긍정적인 영향을 미치는 것으로 나타났다. 또한 학습자들은 온라인 비대면 독해 수업에 대체로 만족한다는 반응을 보여 주었고 만족하는 이유로는 체계적인 수업 진행 및 수업의 질, 학습의 효율성 등을 제시하였다. 교수자들은 온라인 비대면 독해 수업의 확장 가능성을 인지할 필요가 있으며 이를 위해 효율적인 온라인 수업 방안을 미리 대비하고 철저히 준비해야 할 것이다. 또한 교수자들은 효율적인 온라인 수업 활동을 제시하고 세세한 내용 설명과 빠르면서도 적절한 피드백을 통해 체계적으로 수업을 구성해야 할 것이다.

• 대한지구과학교육학회지
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• 제15권2호
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• pp.273-284
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• 2022

본 연구는 D광역시 초등학교 3~6학년 담임교사 중 과학 교과 온라인 수업 경험이 있는 교사 4명을 대상으로 4개월간 수집한 자료를 바탕으로 교사들의 과학과 온라인 수업을 통한 교육과정 운영의 실제와 교육적 시사점을 도출하기 위한 내러티브 탐구이다. 연구대상자들의 지구과학단원의 온라인 수업 경험을 바탕으로 인터뷰, 심층면담을 실시하고, 온라인 수업관련 제작자료 및 교사일지 등 관련 문서들과 현장 수업을을 실시한 결과, 교사들은 기존의 대면수업에 비해 온라인 수업 준비에 더 많은 시간을 할애하고, 온라인 수업에서 활용되는 새로운 매체에 적응하는 과정에 어려움을 보였다. 또한 팬데믹 상황에서 제작된 과학자료 및 원활한 수업운영을 위한 수업플랫폼 제공을 요구하였다. 특히 실험단원의 경우, 계획된 교육과정이수 시수에 부담감이 있었으며, 팬데믹 상황에서 학생들의 밀도 있는 과학수업을 위해 개인별 실험도구의 필요성을 느꼈다. 더불어 효과적인 교육과정 운영을 위한 교육과정 재구성과 이를 위한 교사의 재량권 확대 및 융통성 있는 교육과정 운영이 필요하다. 결과적으로 팬데믹 현상을 대비한 미래교육으로의 전환을 위해 새로운 수업형태로 대면수업과 온라인 수업의 장점을 결합한 블랜디드 러닝 학습체계 도입이 필요하며, 온라인 학습의 질과 효과를 높이기 위해 다양한 수업형태 및 온라인 수업 경험에 대한 지속적인 교사연구가 요구된다.

• 대한지구과학교육학회지
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• 제7권1호
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• pp.119-132
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• 2014

In recent years, Korea encourages teachers to do STEAM education(Science, Technology, Engineering, Arts & Mathematics), which includes Arts to STEM education to train creative science technology talent. Related to this, we developed a subject substitute STEAM program for the 6th grade students in elementary school and applied it in a field. The STEAM program which substitutes contents in curriculum related to Energy unit was developed and it was taught to twenty four sixth grade students during regular classes. During the classes, all activities of students were observed and they were written in recording notes during the observation. After all STEAM program ended, how students recognize the subject substitute STEAM program compared to general class, understand learning contents and think about the program before and after the STEAM classes were analyzed through questionnaire and interviews. The results were as follows. First, some students had difficulty in reconciling different ideas in group, creative thinking and crafts but most students liked the STEAM classes because many activities are fun and it is easy to understand. Second, learners regarded practical use of knowledge, learning different subjects together and interests as the reasons they can understand learning contents easily during STEAM program. Third, learners recognized STEAM classes are good to understand knowledge, think creative ideas and improve social skills after the STEAM classes while they showed anticipation, worry and fear before taking the classes. It is found that a subjective substitute STEAM program is helpful to increase learners' interests in learning, understand learning contents, increase creativity and have a good personality through a qualitative research.

• 정보처리학회논문지A
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• 제13A권1호
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• pp.71-78
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• 2006

어플리케이션에서 XML 데이터를 이용하기 위한 방법으로 XML 타입 정의에 맞는 클래스를 생성하고 데이터의 인터페이스를 담당하게 하는 XML 바인딩 방법이 있다. 그런데 이러한 방법을 지원하는 기존의 바인딩 프레임워크에서는 XML 정의 문법에서 정의된 모든 요소에 대해 클래스를 생성하여 클래스의 수가 많아지고 전체 어플리케이션의 복잡도가 높아지는 문제가 있다. 본 연구에서는 XML 정의 문법에서 XML 바인딩 클래스 생성이 필요한 요소들을 추출하는 인라인 방법을 제안한다. 제안된 바인딩 클래스생성 방법은 반복과 재귀 등의 경우에만 클래스를 생성하고 터미널 요소의 값은 필드로 표현하는 클래스를 생성한다. 그리고 인라인된 요소들의 경로를 회복하여 XML 문서를 생성하기 위한 마샬링 알고리즘을 소개한다. 제안된 방법을 검증하기 위하여 IBinder 시스템을 개발하고 생성된 결과를 기존의 방법과 비교하였다. 그 결과 IBinder 시스템에서 생성된 XML 바인딩 클래스의 수가 크게 줄어드는 것을 보일 수 있었다.