• 방송공학회논문지
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• 제20권5호
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• pp.676-686
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• 2015

Light field 카메라를 이용하여 영상을 취득한 후 다양한 응용 프로그램으로 확장이 가능한 4차원 light field 영상은 일반적인 2차원 공간영역(spatial domain)과 추가적인 2차원 각영역(angular domain)으로 구성된다. 그러나 이러한 4차원 light field 영상을 유한한 해상도를 가진 2차원 CMOS 센서로 취득하므로 저해상도의 제약이 존재한다. 본 논문에서는 이러한 4차원 light field 영상이 가지는 해상도 제약 조건을 해결하기 위하여, 4차원 light field 영상에 적합한 딕셔너리 학습 기반(dictionary learning-based) 초해상도(superresolution) 알고리즘을 제안한다. 제안하는 알고리즘은 4차원 light field 영상으로부터 추출한 많은 수의 4차원 패치(patch)들을 바탕으로 딕셔너리를 구성 및 훈련하며, 학습된 딕셔너리를 바탕으로 저해상도 입력 영상의 해상도를 향상시키는 과정을 수행한다. 제안하는 알고리즘은 공간영역과 각영역의 해상도를 동시에 각각 2배 향상시킨다. 실험에 사용된 영상은 상용 light field 카메라인 Lytro에서 취득하였고 기존의 알고리즘과의 비교를 통해 제안하는 알고리즘의 우수성을 검증한다.

• 한국수학교육학회지시리즈A:수학교육
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• 제17권2호
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• pp.1-13
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• 1979

This study aimed at studying the sequence of the Figure Transformation Learning, inquiring relationship among these transformations and then researching whether there is the difference of the learning ability or not between by teaching them as it is independent and by teaching them as it is contains. (Hypothesis 1) It may be more effective to teach The Sequence of Transformation Learning by beginning with peculiar field, ending with general field than vice versa At the result of verification-C $R_{M}$=2.59, 0.005$R_{M}$=5.19, p<0.005-significant difference appeared. It is proved more effective to teach the Figure Transformation Learning the way it contains than the way it is independent. Synthesizing two hypothesises of the above, the conclusion is following The Figure Transformation Learning should be taught by beginning with peculiar field. ending with general field (congruent transformationlongrightarrowsimilar transformationlongrightarrowprojective transformationlongrightarrowtopological transformation). To teach it the way it contains is more effective.ive.

• 한국콘텐츠학회:학술대회논문집
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• 한국콘텐츠학회 2006년도 추계 종합학술대회 논문집
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• pp.792-795
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• 2006

본 논문에서는 On-line 상의 교육에 의한 E-learning 학습모델을 이용하여 교육프로그램에 이를 적용하였다. 교육과정에 감상부분을 통해 학습의 동기유발과 학습효과의 기대, 학습의욕증대를 위해 나타나는 각 그룹의 학생의 맥박을 체크하여 정서적 안정성에 대한 연구결과 음악 감상 컨텐츠의 적용에 의한 음악 흥미도를 추출하여 음악 감상이 학생들에게 미치는 영향을 분석하였다.

• 한국가정과교육학회지
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• 제12권3호
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• pp.171-181
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• 2000

The purpose of this study is to compare and analyze on the result of learning accomplishment and attitude between two groups to certify the application possibility of the cooperative learning method in home economics education. This inquiry was investigated by two classes 95 students. of the first glade in high school a commercial girl’s high school located in Anyang city of Kyonggi province, and then classified in a cooperative learning group and a traditional learning group respectively, then the 6th lessons progressed, and the difference of results of the learning accomplishment and the learning attitude according to each group was analysed with the post tests of the learning accomplishment and the learning attitude of two groups. The results of this study are summarized as follows. (1) Three subordinate positions, which are knowledge, understanding and application field of learning accomplishment between the cooperative learning group and the traditional learning group. it highly and the traditional learning group it highly showed in comparison with the traditional learning group. (2) There are not any statistically significant difference in the attention- concentration field of learning attitude between the cooperative learning and the traditional learning groups, but the cooperative learning group in the learning method and the self learning field highly showed.

• 대한지구과학교육학회지
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• 제15권2호
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• pp.171-191
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• 2022

이 연구의 목적은 광물과 암석을 주제로 초등학생들이 가상 야외지질답사 모듈 개발에 직접 참여함으로써 관찰되는 학생들의 학습 효과를 귀납적으로 탐색하는 것이다. 수도권 소재 'H' 초등학교에 재학 중인 10명의 학생들이 본 연구에 참여하였다. 학생들은 가상 야외지질답사 모듈 개발을 위해 사전에 실제로 야외지질답사를 실행하고 가상 야외지질답사 모듈을 개발하였다. 이 과정에서 학생들이 작성한 서면 자료와 비디오 녹화 영상, 음성 자료, 그리고 모든 연구가 종료된 이후 진행된 면담 자료를 수집하였다. 가상 야외지질학습의 구성 요소 중 네 가지 영역(인지, 심리, 지리, 기술)을 중심으로 연구 참여자들의 학습 효과를 분석하였다. 그 결과 가상 야외지질학습의 네 가지 요소, 인지, 지리, 심리, 기술 영역에서 긍정적인 학습 효과를 확인하였다. 이 연구는 연구 참여자들이 가상 야외지질학습에 단순 참여자가 아니라 가상 야외지질답사 모듈 수업 개발자로서 참탐구의 측면에서 지질학 학습에 유의미한 결과가 있음을 밝혔다.

• 농촌지도와개발
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• 제22권4호
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• pp.435-444
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• 2015

This study analyzes the structural relationship between attitudes and learning more properties in agricultural college education programs. The results were as follows. first, The model was accepted according to the some goodness of fit statistics such as ${\chi}^2$(84.28, p>.05), RMR(.036), RMSEA(.041), GFI(.927), NFI(.945), CFI(.985), IFI(985). seconds, Learning attitude(.31) and content validity(.47) in the structural relationship between variables is a direct impact on satisfaction. thirds, Perceived Usefulness(.34) and Content validity(.36) has direct effect of factor on learning attitude. Finally Perceived Usefulness was found to direct effect all Content validity(.64) and easy of use(.27). Finally, considering of duties required in the agriculture. increase the satisfaction of learners should have provide field learning based Learning materials, practices, instructional media. As a result, it will enhance the performance of field learning agricultural education programs.

• 4차산업연구
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• 제3권2호
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• pp.11-17
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• 2023

Purpose - Recently, in the field of language education, interest in edutech has increased due to difficulties in classroom teaching due to COVID-19. Accordingly, we would like to analyze research topics related to e-learning before and after COVID-19 and examine the implications for the future Korean language education field. Research design, data, and methodology - This study organized a list of papers to be analyzed by searching for e-learning terms applicable to Korean language education in RISS. The collected data was electronically documented, keywords were extracted using text mining techniques, and word frequencies were checked, and then viewed through cloud visualization. Result - It was confirmed that research on e-learning in the field of Korean language education has increased rapidly in 2021 and 2022. In particular, extensive research on online learning methods has been actively conducted due to the difficulties of face-to-face learning in the COVID-19 era. There have been many studies on teaching and learning methods, such as flipped learning, hybrid learning, blended learning, mobile learning, and smart learning. Conclusion - Since the research so far has mainly focused on online class management methods. Therefore, future research suggests that efforts should be made to develop educational contents and teaching methods using specific ICT technologies. These efforts will contribute to advancing smart education that future education aims for.

• ETRI Journal
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• 제46권2호
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• pp.165-174
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• 2024

We propose a method to suppress the speckle noise and blur effects of the light field extracted from a hologram using a deep-learning technique. The light field can be extracted by bandpass filtering in the hologram's frequency domain. The extracted light field has reduced spatial resolution owing to the limited passband size of the bandpass filter and the blurring that occurs when the object is far from the hologram plane and also contains speckle noise caused by the random phase distribution of the three-dimensional object surface. These limitations degrade the reconstruction quality of the hologram resynthesized using the extracted light field. In the proposed method, a deep-learning model based on a generative adversarial network is designed to suppress speckle noise and blurring, resulting in improved quality of the light field extracted from the hologram. The model is trained using pairs of original two-dimensional images and their corresponding light-field data extracted from the complex field generated by the images. Validation of the proposed method is performed using light-field data extracted from holograms of objects with single and multiple depths and mesh-based computer-generated holograms.

• 산경연구논집
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• 제9권2호
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• pp.65-72
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• 2018

Purpose - One of the biggest problems in the e-learning distribution process is the lack of quality content and learners' discredit in e-learning content. In order to respond to the various demands of the corporate education field appropriately, it is necessary to search for directions of new e-learning models that are out of traditional e-learning contents. The purpose of this study is to identify recent trend issues related to corporate e-learning and to suggest directions for development. Research design, data, and methodology - Based on the literature review, trend issues that should be considered important in corporate e-learning were derived. Online survey was conducted to evaluate the importance-feasibility of each issue to 13 experts on e-learning and corporate education. The contents of the questionnaire are as follows: 1) recognition of importance and feasibility of trend issues to be considered important in the future corporate education field; 2) factors to be considered in developing future e-learning contents. Results - Six trends derived from a comprehensive literature review. The most important e-learning trends for corporate education field were 'mobile learning', 'micro learning', 'blended learning', 'social learning', 'adaptive learning', 'engaged learning'. As a result of evaluating the importance and feasibility of each issue, experts point out that 'mobile learning' and 'micro learning' should be actively considered for introduction and utilization at present. In addition, 'social learning' and 'blended learning' need to be actively considered in the near future. On the other hand, experts recognized that 'adaptive learning' and 'engaged learning' need to be prepared from a long-term perspective. Conclusions - There are two main reasons for this result. First, in corporate e-learning, it is important to 1) be able to update on time, 2) the connection with the workplace is important. Second, it requires realistic verification of the expected performance of the learning model. To be considered part of the future are as follows: First, the value and effectiveness of the new e-learning type should be studied. Seconds, e-learning contents should be developed through adopting SAM or Agile methodology. Through this process, we would be able to enhance the quality in e-learning content.

• 융합정보논문지
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• 제11권11호
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• pp.312-326
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• 2021

본 다중 사례 연구는 언어 학습 및 사용에서 언어 사회화의 프레임워크[10]를 기반으로 코로나19 팬데믹 기간 동안 가정 내에서 4명의 대학생의 영어 학습과 관련된 가정 내 환경적 요인을 조사합니다. 본 연구는 서술 기법을 활용하여 중국 북서부 농촌 지역에 위치한 가정에서 중국인 대학생 4명의 온라인 영어 학습 양태를 조사하기 위해 시계열 분석을 수행합니다. 데이터는 2020년 3월부터 2020년 7월까지 구두 및 서면 서술, 반구조화 인터뷰, 수업 문서(수업 일정, 시간표)를 통해 수집되었습니다. 연구 결과에 따르면 각 학생은 가정 내에서 영어 학습에 영향을 미치는 서로 다른 가정 내 행위관습을 가지고 있었습니다. 결국 4명의 학생 모두 자신의 행위관습이 온라인 영어 학습을 비효율적으로 만든다고 느꼈고 가정 내에서 계속 학습하고 싶지 않다고 말했습니다. 본 연구의 결과는 중국 북서부 농촌 지역 부모들이 대학생들의 학습 환경을 구축하고 학생들이 가정 내에서 효과적인 학습 습관을 기를 수 있도록 주의를 기울이는 것이 중요함을 시사합니다.