• Journal of the Korea Convergence Society
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• v.1 no.1
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• pp.1-15
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• 2010

The Education has responsibility for predicting the social changes and cultivating global talent which the society needs. The ministry of education, science and technology in govern ment has been the concerns on social educational changes and thus built the '5 31 educational reform policy' in 1995 by the educational reform committee. As a solution of a social change, this paper reviews the three-phase educational information policies, and e-learning and u-learning which are the main technologies in educational information. Also, the technologies of e-learning can be divided into m-learning, t-learning, u-learning, r-learning, game-based learning according to the contents mass media. Among them, this paper introduces the concept of robot-learning, called r-learning, and compares it with u-learning.

• The Journal of the Korea Contents Association
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• v.12 no.9
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• pp.522-533
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• 2012

In these days, most countries effort is to raise competitive people for increasing creativity. Korea also decided human character "Global Creative Person" and prepare for the future. Therefore many universities and laboratories suggest various educational model for increasing creativity. One of the educational model for increasing creativity is Computer Education. That is good at increasing creativity, especially programming education because it is a more effective education. Thus, this research suggests that program for increasing creativity through developing "SRD Program". SRD Program is for increasing creativity and it applies to Scratch Programming, Robot Programming, and Digital Kit. Furthermore, SRD Program is developed and is based on Bruner's Spiral curriculum. Therefore, this research suggests increasing diverse programs for enhancing creativity and there are expectation for raising "Global Creative Person" through SRD Program.

• The Journal of Korean Association of Computer Education
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• v.15 no.5
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• pp.11-22
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• 2012

This study aimed to analyze applying TAM model the process that flow factors such as 'harmony of challenge and technology' exert effects on learners' attitudes of keeping learning in STEAM class employing robots. For the study, the 'Energy and Tools' chapter of the science textbook for the 6th grade's second semester was re-arranged, and applied for 189 students, and among them, only the 174 usable data were used for the analysis. As a result of analysis, students' learning immersion factor(factor of harmony of challenge and technology) had deeper effects on the factor of ease of learning than usefulness of learning and this in turn, had an effect on their intention to keep learning ultimately through the factor of value of learning as the study found. As a result of research, it was found that for indications identified, in order to use robots in STEAM class, for the students' intention to keep learning, it's essential for learners to have proper and active attitudes towards learning and basic knowledge of robots, and aspects of values should be considered that based on this, robot can assist in learning and affect results of learning in STEAM class. On the other hand, the factors of ease of learning and the combination of the challenge and technology do not gives direct (+) effect on the intention to continue learning and the value for learning, respectively. However, each of the two factor has indirect influence on each of the dependent variable within the significant range, which is the reason the author includes the result of the analysis.

• Journal of The Korean Association of Information Education
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• v.21 no.3
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• pp.277-284
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• 2017

Software Education will be implemented at elementary, middle and high schools starting in 2018. The goal of software education is to help students develop Computational thinking skills. Especially, using robots in software education increases student interest and helps to increase creativity. In order for software education using robots to be effective, education for teachers should be effective. The development of effective education contents for preliminary teachers can be said to be the success of software education. By the way, effective education can be said to begin with an accurate analysis of the subjects. In order to develop an effective curriculum for preliminary teachers, it is necessary to grasp the level of preliminary teachers who will carry out the software education using robots. Therefore, in this paper, we surveyed the experiences, levels and perceptions of preliminary teachers to help develop software education curriculum using robots.

• Journal of the Korea Society of Computer and Information
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• v.25 no.10
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• pp.261-268
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• 2020

In this paper, we propose an effective software education model for youths with disability. This software education model consists of a four-step process. In the first step, it draws the education curriculum of the software education for different types of disabled youths based on the results of comparative analysis of software education field in special education curriculum. In the second step, it suggests achievement standards for effective software education for the disabled students by classifying students with intellectual disabilities and visual, hearing, and physical disabilities without any multiple disabilities. In the third step, the study developed a modular textbook comprised of unplugged activities using coding robot Albert, physical computing, and block/text coding with the reflection of the characteristic of each type of disability. In the fourth step, it applied the textbook to the school field and educated disabled students focusing on experience to allow them to think logically and by stages about different problems they face in daily lives. In addition, by analyzing the results of youths' performance evaluation and surveys, it was shown that 82.3% of developmental disabilities, 78.8% of visual impairments, 90.9% of hearing impairments, and 78.8% of physically disabilities achieved achievements above the "medium" level. These results prove that the software education model for youths with disabilities proposed in this paper is very effective in improving computational chinking of youths with disabilities.

• Journal of The Korean Association of Information Education
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• v.20 no.6
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• pp.617-628
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• 2016

For the education on information, information appliances and operating systems of the information curriculum in elementary schools, precedent studies on the content structure of domestic and foreign curricula and etc. were compared and analyzed, and the ways of improvement and implications were examined. In addition, the necessity to select these contents, time of education, appropriateness of the selected contents were surveyed by professionals, and as the research results, the contents for the education on information, information appliances and operating systems in elementary schools were chosen, and achievement standards were set and proposed. The paper results can be used for the development of national level of elementary information curriculum and for the cultivation of elementary school students' key educational capacities. This paper has the limit that its results cannot be generalized because its analysis was based on the outcome surveyed only by some experts. Nevertheless, it is meaningful in that it specifically tried to analyze the appropriateness of the content achievement standards of the elementary information curriculum, and through which, it offers the information necessary for the stable management of elementary information curriculum and the improvement of elementary information curriculum.

• Journal of Digital Contents Society
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• v.18 no.5
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• pp.995-1000
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• 2017

The purpose of this study is to analyze the educational effect on creativity and solving-problem ability based on hackathon of elementary SW education. We divided into control and experimental groups with activities of physical computing or robots. The control groups conducted by traditional project based learning collaboratively and the experimental group in hackathon. The outcomes from students were evaluated to by elementary teachers with questionnaire and analyzed to the creativity and solving-problem ability of physical computing or robot productions. As a result, a group of hackathon showed significant positive results in the accuracy on creativity and solving-problem skills statistically. We concluded that the free atmosphere of hackathon for communication and consultation have been attributed to various ideas of students.

• Proceedings of the Korea Information Processing Society Conference
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• 2015.10a
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• pp.1305-1308
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• 2015

모바일 로봇의 경로 계획의 경우 주로 위치로 표현되는 2차원 공간 상에서 현재 위치에서 목표 위치까지 모바일 로봇이 도달하도록 경로를 계획한다. 그러나 nonholonomic 구조를 가지는 모바일 로봇의 경우 기구학적 제약에 의해 추종 불가능한 경로가 존재하게 된다. 또한 nonholonomic 모바일 로봇은 진행 방향을 포함한 3차원 공간 상에서의 경로 계획이 이루어져야 한다. 모바일 로봇의 경로 계획 알고리즘으로는 A* 경로 계획 알고리즘이 주로 사용되는데, A* 경로 계획 알고리즘은 경로 계획 시 현재 위치에서부터 노드를 확장시켜 가며 경로를 탐색한다. 이 때 각 노드로부터 목표 위치까지의 비용을 계산하기 위해 heuristic 함수가 사용된다. 기존의 A* 경로 계획 알고리즘의 경우 Euclidean 거리에 기반한 heuristic 함수가 사용되었으나, 이 경우 모바일 로봇의 진행 방향은 고려하지 않아, 로봇의 목표 위치에 도말만 할 뿐 목표 방향으로의 도달은 보장 할 수 없다. 본 논문에서는, A* 경로 계획 알고리즘을 통해 nonholonomic 모바일 로봇이 목표 위치에 목표 방향에 맞추어 도달할 수 있도록 경로 생성이 이루어지는 heuristic 함수를 제안하고, 시뮬레이션을 통해 그 성능을 검증한다.

• Journal of Institute of Control, Robotics and Systems
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• v.22 no.12
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• pp.1021-1026
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• 2016

The graph-based SLAM (Simultaneous Localization and Mapping) approach has been gaining much attention in SLAM research recently thanks to its ability to provide better maps and full trajectory estimations when compared to the filtering-based SLAM approach. Even though graph-based SLAM requires batch processing causing it to be computationally heavy, recent advancements in optimization and computing power enable it to run fast enough to be used in real-time. However, data association problems still require large amount of computation when building a pose graph. For example, to find loop closures it is necessary to consider the whole history of the robot trajectory and sensor data within the confident range. As a pose graph grows, the number of candidates to be searched also grows. It makes searching the loop closures a bottleneck when solving the SLAM problem. Our approach to alleviate this bottleneck is to sample a limited number of pose nodes in which loop closures are searched. We propose a heuristic for sampling pose nodes that are most advantageous to closing loops by providing a way of ranking pose nodes in order of usefulness for closing loops.

• Journal of IKEEE
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• v.23 no.4
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• pp.1440-1447
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• 2019

Currently, the prevalence of autism spectrum disorders in children is reported to be higher and shows various types of disorders. In particular, they are having difficulty in communication due to communication impairment in the area of social communication and need to be improved through training. Thus, this study proposes a method of acquiring voice information through a microphone mounted on a robot designed through preliminary research and using this information to make intelligent motions. An ANN(Artificial Neural Network) was used to classify the speech data into robot motions, and we tried to improve the accuracy by combining the Recurrent Neural Network based on Convolutional Neural Network. The preprocessing of input speech data was analyzed using MFCC(Mel-Frequency Cepstral Coefficient), and the motion of the robot was estimated using various data normalization and neural network optimization techniques. In addition, the designed ANN showed a high accuracy by conducting an experiment comparing the accuracy with the existing architecture and the method of human intervention. In order to design robot motions with higher accuracy in the future and to apply them in the treatment and education environment of children with autism.