• Journal of IKEEE
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• v.25 no.3
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• pp.412-419
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• 2021

In this paper, we propose a performance improvement of the LwF method using efficient path selection in Continuous Learning Environment. We compare performance and structure with conventional LwF. For comparison, we experiment with performance using MNIST, EMNIST, Fashion MNIST, and CIFAR10 data with different complexity configurations. Experiments show up to 20% improvement in accuracy for each task, which mitigating the Catastrophic Forgetting phenomenon in Continuous Learning environments.

• Proceedings of the Korea Multimedia Society Conference
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• 2002.11b
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• pp.725-728
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• 2002

현재, 웹기반 원격교육 시스템에서는 많은 학습자의 컨텐츠 및 서비스가 요구되고 있다. 기본 학습자료의 제공에 대한 많은 모형이 대두되고 있으나 기본 학습을 뒷받침해 줄 수 있는 보충학습 자료의 모형은 제시되지 않고 있다. 따라서, 본 논문에서는 학습자의 학습 휴리스틱에 의하여 기계학습된 보충학습 내용과 위치를 웹과 이메일로 자동 푸쉬해 줄 수 있는 시스템을 제안한다. 휴리스틱에 의하여 보충학습 데이터의 트리를 구성한 후 시멘틱 네트를 이용한 속성을 정의하고 기계학습된 학습자의 반복 학습 경로를 분석하여 보충학습을 원활히 진행할 수 있도록 시스템을 설계하는 것이 본 논문의 목적이다.

• Journal of The Korean Association For Science Education
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• v.26 no.2
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• pp.232-238
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• 2006

This study examined how motivational climate, achievement goals, and learning strategies jointly contributed to science achievement through path analysis of 260 middle school students. The results showed that only deep learning strategy had a significant direct effect on science achievement. The promotion of learning by science teachers and the pursuit of progress by peers had the mediational pathways linking task goal and deep learning strategy on science achievement. The pursuit of progress and the promotion of the comparison by peers influenced science achievement via deep learning strategy. The promotion of the comparison by peers also influenced deep learning strategy via performance-goal, which in turn influenced science achievement. These results indicated that the learning strategies had a direct effect and motivational climate or achievement goals had an indirect effect on science achievement. Our findings lead us to expect that the effective instructional method to improve students' science achievement is the one that impact both cognitive and motivational functioning.

• Journal of Elementary Mathematics Education in Korea
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• v.19 no.3
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• pp.387-408
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• 2015

The purpose of this research is to analyze the mathematical tasks of length measurement in two different perspectives, the level of cognitive demands and learning trajectories, and restructure the mathematical tasks so that the students' conceptual learning is promoted and students are able to have opportunities to think more broadly. Ten lessons with the restructured mathematical tasks were implemented for a class of 2nd grade elementary students. Also a qualitative and in-depth study was conducted with 4 students of the target group. The study shows that firstly, the restructured tasks requiring high level of cognitive skills, had positive effects in increasing the students' level of thinking and reasoning. Secondly, the tasks modified according to the learning trajectories of Szilag, Clements & Sarama(2013) in length measurement, have proven to promote students' concept learning and elaborate the students' level of thinking.

• Journal of the Korean Chemical Society
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• v.51 no.5
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• pp.459-470
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• 2007

The structural equation modeling techniques were used to assess a model of chemistry learning strategy based on self-handicapping tendency and goal orientation. Data were collected during chemistry lessons in two high schools. In the optimal model II-2 of this research, the self-handicapping tendency was negatively related to the use of self-efficacy. The learning goal was positively related to the use of self-efficacy and to learning strategy. The performance- approach goal was positively related to self-efficacy but presented an negative relationship to learning strategy. The performance-avoidance goal was negatively related to self-efficacy but presented an positive relationship to learning strategy. Besides affecting the learning strategy through self-efficacy indirectly, the learning goal, performance-approach goal, and performance-avoidance goal affected learning strategy directly. The self-handicapping tendency and performance- avoidance goal were a negative predictors of self-efficacy, but the learning goal and performance-approach goal were a positive predictors. And the self-efficacy affected learning strategy positively. The implications of these findings for learning strategy in chemistry are discussed. Although the paths model of relationships of the motivations to learn and learning strategies in chemistry education as mentioned above is established, the more systematic search for the higher self-efficacy and learning strategy in different courses and curriculums may be needed.

• Journal of the Korean Chemical Society
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• v.57 no.1
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• pp.147-158
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• 2013

This study is to search an optimal model on causal relationships of the motivations to learn and motivation strategy in chemistry education. The participants in this study are consisted of G and I high schools students (487) in Gwangju. They all answered to the questionnaire. Model I is hypothesized to be path model of the mediation between 'self-efficacy, achievement need, and entity theory of intelligence' and 'learning strategy and self-handicapping tendency of motivation strategy' by goal orientation to explore variables of study effecting the motivation strategy. And Model II is hypothesized path model of the mediation between goal orientation and 'learning strategy and self-handicapping tendency' by 'self-efficacy, achievement need, and entity theory' to explore variables of study effecting the motivation strategy. Based on these models, structural equation modeling techniques are used to evaluate for the path model among goal orientation(learning, performance approach, and performance approach goal orientation), self-efficacy, achievement need, entity theory of intelligence, self-handicapping tendency, and learning strategy in chemistry education. As the results, Model II is considered. Goodness-of-fit indexes of this model related modification models are identified and analyzed in phases. And this model is accomplished by correcting the model the fifth time to enhance goodness-of-fit indexes. In this optimal model II-5 (Fig. 3) on causal relationships of the motivations to learn and learning strategy (p

• Journal of the Korea Convergence Society
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• v.10 no.11
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• pp.533-541
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• 2019

This study was designed to construct and test a structural equation model for related factors that affect to self-regulated learning in nursing students. The nursing students was asked to complete a questionnaire, and 273 data units were analyzed with Structural Equation Modeling. The hypothetical model fit indices for the model revealed a fit at a recommended level, and 5 of the 6 paths were statistically significant explaining 68% of the variance. Therefore, education that improves self-determination, interpersonal competence and achievement goal orientation will promote self-regulated learning of nursing students. Competence programs to build the self-autonomy and relationships should be developed.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2023.05a
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• pp.160-161
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• 2023

Currently, the ship's passage planning relies on the navigator officer's knowledge and empirical methods. However, as ship autonomous navigation technology has recently developed, automation technology for passage planning has been studied in various ways. In this study, we intend to generate an optimal route for a ship based on Q-learning, one of the reinforcement learning techniques. Reinforcement learning is applied in a way that trains experiences for various situations and makes optimal decisions based on them.

• 한국디지털정책학회:학술대회논문집
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• 2005.06a
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• pp.89-98
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• 2005

간접광고의 한형태인 영화나 드라마 속에 제품배치(PPL)는 온셋 배치와 크리에이티브 배치로 분류할 수 있다. 온셋 배치(on-set placement)는 맥락효과 속에 전경(foreground)에 해당되며, 크리에이티브 배치(creative placement)는 배경에 해당되기 때문에 소비자의 정보처리에 의한 기억효과가 다르게 나타난다. 온셋배치의 경우 자극의 현저성으로 인하여 정교화 가능성 모델이론의 설득의 중심경로를 통한 정보처리효과가 나타나기 때문에 명시적 학습을 하게 된다. 반면에 드라마 배경에 해당하는 PPL의 크리에이티브 배치는 정교화의 수단이 낮아서 배경의 여러 단서들과 함께 설득의 주변경로를 통한 정보처리를 할 것이다. 따라서 암묵적 학습을 할 가능성이 높게 나타나게 된다. 이러한 제품배치의 형태에 따른 학습기억의 형태는 조절변수인 관여도에 따라 다르게 나타날 것이다. 제품관여도가 높은 경우에는 크리에이티브 배치를 하여도 명시적 학습을 할 가능성이 많은 반면 제품관여도가 낮은 경우 크리에이티브 배치를 하게 되면, 암묵적 학습효과가 미약하거나 일어나지 않을 가능성이 많다. 그러므로 제품관여도가 낮은 상품의 경우에는 제품배치시 가능한한 크리에이티브 배치피하는 것이 유리 할 것이다.

• Journal of the Korea Society of Computer and Information
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• v.28 no.10
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• pp.197-205
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• 2023

This study is to apply the Havruta teaching-learning method to college students' major classes and analyze the relationship between the effectiveness evaluation of communication skills and sub-factors using a structural equation model. As a result of the study, the communication ability score was different before and after Havruta teaching-learning, and it was found that after Havruta teaching-learning was higher than before Havruta teaching-learning. The path effect was found to be significant in all of the total, direct, and indirect effects among latent variables, except for the relationship between interpretation ability, role-playing ability, and goal-setting ability in the direct effect. In this study, it was found that the Havruta teaching-learning method not only improves creativity and thinking ability, but also improves self-directed learning ability. In addition, it was reconfirmed that it is a teaching-learning method that can develop social skills and communication skills as well as problem-solving skills while experiencing opinions different from one's own. As a result, research on a thorough student-centered teaching-learning method suitable for the Homo Machina era must be continued and its application in the educational field must be implemented.