• Journal of IKEEE
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• v.22 no.4
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• pp.1044-1049
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• 2018

CNN (Convolutional Neural Networks) is a neural network that models animal visual information processing. And it shows good performance in various fields. In this paper, we use CNN to classify target and non-target data by analyzing the spectrogram of active sonar signal. The data were divided into 8 classes according to the ratios containing the targets and used for learning CNN. The spectrogram of the signal is divided into frames and used as inputs. As a result, it was possible to classify the target and non-target using the characteristic that the classification results of the seven classes corresponding to the target signal sequentially appear only at the position of the target signal.

• Proceedings of the Korea Contents Association Conference
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• 2006.11a
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• pp.783-787
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• 2006

The 'spatial senses' mean environments and the instinctive responds to objects in the environments. The infancy is an important period to develop the basic capacity of the 'spatial senses'. Since young children can develop the 'spatial senses' throughout the actual and active search, it is essential for them to do experience through their physical actions. This paper proposes four motion based-contents for improving the spatial sense of young children: a bubble game, a cyber goalkeeper game, a mud-huddle game, and a shape recognition game. The proposed four games are implemented to the virtual learning environments. Also, the virtual learning environments utilize the realistic interfaces which can recognize motions of young children and then interact with the games as they do the movement at the virtual environments provided. Using the realistic interfaces not only develops young children's spatial sense but also offers them the pleasure and interest of self-study.

• Journal of the Korea Society for Simulation
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• v.21 no.4
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• pp.65-73
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• 2012

Due to the development of technology related to a weapon system and the info-communication, the battle system of a warship has to manage many kinds of human intervention tactics according to the complicated battlefield environment. Therefore, many kinds of studies about M&S(Modeling & Simulation) have been carried out recently. The previous M&S system based on an agent, however, has simply used non-flexible(or fixed) tactics. In this paper, we propose an agent modeling methodology which has reinforcement learning function for spontaneous(active) reaction and generation evolution learning Function using Genetic Algorithm for more proper reaction for warship battle. We experiment with virtual 1:1 warship combat simulation on the west sea so as to test validity of our proposed methodology. We consequently show the possibility of both reinforcement and evolution learning in a warship battle.

• Journal of The Korean Association of Information Education
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• v.17 no.1
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• pp.43-52
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• 2013

As a tool of programming education, a robot is effective in creative problem solving abilities and logical thinking skills. It also provides practical, operational learning experience to learners, when using as a tool of learning, it can help learners' specific understanding for the contents of education and lead to an active participation in learning. This research focuses on the robot's instrumental use in the mathematics class. So the lesson activities with relation to the fourth grade math curriculum were developed after the functional analysis of the robot and the extraction of educational utilization with function. The result shows that there wasn't a significant difference in achievement test but there was a positive response in the most of the survey items. It shows that robots lead to an active participation in class, to be interested in math class and were helpful to understand math concepts. There was also a positive response in the result of learner interviews such as dynamic, collaborative communication, experiential, practical lessons that are rare sights in normal math class.

• Education of Primary School Mathematics
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• v.14 no.2
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• pp.207-218
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• 2011

This research is to explore mathematics gifted education which considered individual difference of gifted students in elementary school-level. The purpose of this study is to develop a differentiated instruction model and mathematical materials for gifted students that consider students' individual difference. We also investigate effectiveness of differentiated instruction through change of self-directed learning ability and studying satisfaction of gifted students. The results of this study will provide basic information on the after research related with development and application of mathematics gifted education program and differentiated instruction.

• Journal of the Korea Convergence Society
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• v.7 no.2
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• pp.109-118
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• 2016

The purpose of this study was I cultivate practical ability to solve diverse and complex issues in the field of convergence and applied learning and practical training element through problem-based learning to preliminary sports leaders. Selected students in grades 3 to 28 Sports Science S university people to them as participants and through a qualitative case study methods, such as group interviews, participant observation, open questionnaire and the following results were obtained. First, the level of satisfaction on class was high and the class was evaluated with significant contemplation. Second, it has been collecting a variety of learning materials to understand, interpret and improve the ability to solve practical problems in the process of actively reconstruct their own knowledge structure. It also gave a positive impact on the creative and divergent thinking to accelerate the promotion of autonomy. Third, opinions about teamwork, sharing your thoughts with colleagues point is that you can see yourself in other people's positions were evaluated as positive effects.

• Journal of the Korea Convergence Society
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• v.8 no.3
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• pp.283-294
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• 2017

This study developed and proposed a cosmetics education program for middle school students for the free semester policy. The program was conducted for 20 sessions, two hours per week, based on theories and practice, and the teaching-leaning plan was made in the order of introduction, development, and summary. Through the program, students will have an opportunity to recognize the problems of misusing cosmetics and importance of the skin. Also, the program was developed in a way that encourages students to actively participate in the education so that it can lead to career development in the social and technical aspects. This study can provide basic data for students to acquire knowledge and practical education related to skincare and cosmetics use in the future.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2017.10a
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• pp.179-181
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• 2017

In this paper, we propose the contents of the visual content of the child's own boundaries and implement the contents based on active learning using touch method. The images consist of four modules, each of which consists of content developments, learning concepts, and learning content. The notion of sexual violence is also aimed at fostering awareness that sexual violence is also an extension of the child's safety. Moreover, the learning content of a learning game improves learning outcomes by receiving a 'compliment' if the game succeeds and receives a 'reward' on the game.

• Journal of Convergence for Information Technology
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• v.8 no.6
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• pp.67-74
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• 2018

The purpose of this study was to examine the difference between communicative competence and problem solving ability by applying project - based instruction in the community dental hygienic subject. For this purpose, we measured 30 students' communication ability and problem solving ability using the same questionnaire before and after experiencing project learning. The data were Collected from 30 undergraduate students and analyzed by paired t-test with SPSS. The result demonstrated that project-based learning method has an significant effect on improvement of communication skill and problem solving ability of undergraduate students. Based on the results of this study, in order to improve the practical ability, it is necessary to activate the self-directed active learning method such as Project-based learning for community dental hygiene major study.

• Journal of Korean Home Economics Education Association
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• v.22 no.2
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• pp.101-113
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• 2010

The purpose of this study is to develop and evaluate the practical problem-based lesson plan for high school home economics class focusing on consumer choice of genetically modified(GM) food. The ADDIE instructional design model was applied. The first analysis step, practical problems were chosen based on the previous studies and the educational goal suggested in the 2007 revised curriculum. The next design and development steps, 4 hours of lesson plans were developed by reconstitution a chapter of Food Safety. Additional learning materials(17 student activity papers, 17 student reading materials, 3 teacher reading materials) were also developed. The implementation step, the lesson plans developed were applied to the S high school students in Bundang, Geyonggi-do. The last evaluation step, the perception change about GM food and the adequacy of teaching method were evaluated. As results, the studens' attitudes and minds towards the GM food were changed. The level of concern on GM food increased, and the ratio of students who would check whether GM food or not was increased. Also students showed high level of satisfaction on teaching method and materials.