• Journal of Internet Computing and Services
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• v.23 no.6
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• pp.39-48
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• 2022

Cyberattacks around the world continue to increase, and their damage extends beyond government facilities and affects civilians. These issues emphasized the importance of developing a system that can identify and detect cyber anomalies early. As above, in order to effectively identify cyber anomalies, several studies have been conducted to learn BGP (Border Gateway Protocol) data through a machine learning model and identify them as anomalies. However, BGP data is unbalanced data in which abnormal data is less than normal data. This causes the model to have a learning biased result, reducing the reliability of the result. In addition, there is a limit in that security personnel cannot recognize the cyber situation as a typical result of machine learning in an actual cyber situation. Therefore, in this paper, we investigate BGP (Border Gateway Protocol) that keeps network records around the world and solve the problem of unbalanced data by using SMOTE. After that, assuming a cyber range situation, an autoencoder classifies cyber anomalies and visualizes the classified data. By learning the pattern of normal data, the performance of classifying abnormal data with 92.4% accuracy was derived, and the auxiliary index also showed 90% performance, ensuring reliability of the results. In addition, it is expected to be able to effectively defend against cyber attacks because it is possible to effectively recognize the situation by visualizing the congested cyber space.

• Proceedings of the Korea Contents Association Conference
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• 2005.05a
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• pp.19-30
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• 2005

This study examined student's and teachers' perceptions of learning style on internet-based learning. Many research have studied student's learning style both in traditional learning settings and inter-based learning settings. These studies emphasized that student's learning style is one of the important indicators of establishing learning strategies and expecting positive learning outcomes. However, it has been rare to find the comparative analyses between learners and teachers to see how differently they perceive the learning style on internet-based learning. This study analyzed 386 elementary and 627 middle school students and 130 cyber teachers. They filled out the 15 items questionnaire on internet-based learning style. The results showed that the student's and teachers preferred the self-directed internet learning style rather than cooperative and dependent styles. However, the teachers judged the students more self-directed and dependent style preferred than the students self perception. In conclusion, this study suggests the differentiated teaching-learning design and development strategies on internet learning, especially based on subject matter. Also, there should be advanced tutor strategies considering learners' different learning styles. Finally, many research on internet learning styles should be conducted in various learning areas and learner ages and characteristics.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.21 no.11
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• pp.2184-2190
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• 2017

In the age of knowledge informationization, various educational programs utilizing cyber education were introduced to schools, corporate education, military service, lifelong education facilities as well as public education and training programs. In the case of the national government officials, the education and local government officials, which are organized by cyber center in the national civil service personnel development center, are organized by 15 cities and provincial public service training institutes. In 2008, it became to be mandatory for them to receive education and training over a certain period of a year through the introduction of the regular learning system of public officials, and cyber education got active in the education and training of public officials. The purpose of this study is to suggest the development plan of cyber education based on the results of the analysis of the trainees of the civil servants of Chungcheongnam-do who participated in the cyber education in the viewpoint of the public education and training system.

• Journal of the Institute of Electronics and Information Engineers
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• v.49 no.10
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• pp.240-250
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• 2012

For this study, 373 students of H cyber university were chosen to conduct a survey in the spring semester of 2011. The result of this study through structural equation modeling analysis was as follows: First, organizational support significantly affected perceived isolation. Second, organizational support and perceived isolation significantly affected satisfaction. Third, perceived isolation and satisfaction significantly affected learning persistence, while organizational support didn't. In addition, satisfaction was verified as a mediating variable between organizational support, satisfaction, and learning persistence, and satisfaction was verified as a mediating variable between perceived isolation, organizational support and learning persistence. These results imply that perceived isolation and organizational support should be considered for the design and development strategies of instructional courses in order to enhance satisfaction and learning persistence of students in cyber educational environment.

• The Journal of Korean Association of Computer Education
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• v.14 no.5
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• pp.81-96
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• 2011

With the popularity of smart phones for mobile learning on the rise, cyber universities in Korea are trying to build a reliable mobile campus infrastructure. Such advances in smart phone technologies have made it increasingly easy for users to stay connected and this heightened interaction through smart phones has educational potential for collaborative learning. Thus, to fulfill its educational potential and ultimately provide optimal learning environments on the smart phones, this study has developed a discussion-based interface prototype for collaborative learning. The proposed interface design was evaluated through cognitive walkthrough of the expert reviewers and its usability improvements were also offered.

• Proceedings of the Korea Information Processing Society Conference
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• 2000.10a
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• pp.183-186
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• 2000

멀티미디어 컨텐츠는 다양한 매체적 속성으로 학습 흥미를 높일 뿐 아니라. 잠재적인 학습성취도를 중지시킬 것이라고 기대한다. 특히, 학습자들의 상호작용성이 두드러진 사이버 환경속에서 멀티미디어 매체의 기대효과는 상당히 크다. 본 논문에서는 새로운 형태의 교수-학습 매체로 등장한 웹 컨텐츠의 형태에 따른 학습자의 학습성취도를 분석하고, 학습자의 내재적 학습동기를 유발하는 요소를 고려한 새로운 학습 패러다임을 지원하는 웹 컨텐츠를 설계 및 구현한다.

• Proceedings of the Korean Information Science Society Conference
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• 2006.10c
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• pp.433-437
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• 2006

유스케이스(Use Case)를 기반으로 하는 관점지향 소프트웨어 개발방법론(Aspect-Oriented Software Development, AOSD)은 사용자 중심의 시스템을 설계하는데 있어 매우 중요한 소프트웨어 개발방법론으로 부각되고 있다. 학습관리시스템(Learning Management System, LMS)은 사이버교육을 지원하는 핵심시스템이며, 다양한 요구사항을 제시하는 청소년층을 대상으로 하기 때문에 높은 유지보수성과 확장성을 필요로 한다. 본 논문에서는 관점지향 소프트웨어개발 방법론을 6단계 모델링 방법을 통해 사이버 교육을 위한 학습관리시스템에 적용하였다. 적용 결과 학습관리시스템에서 횡단관심사의 모델링을 통한 관점지향 소프트웨어 개발은 유스 케이스 중심으로 모델링되어 사용자 중심의 시스템 유지보수성과 재사용성을 높일 수 있음을 보였다.

• The Mathematical Education
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• v.47 no.4
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• pp.467-486
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• 2008

The purpose of this study is to investigate effectiveness of the cyber home study to improve the self-directed learning ability. For this study, 21 middle school students took voluntarily part in the 4 weeks cyber home study in Wulsan teaching & learning center and 3 students were interviewed among them. The results of this study were as follows; First, the 4-weeks experimental cyber home study is shown to be effective for improving the self-directed learning ability, specialty for the intermediate and low level students, Second, it is shown that the cyber home study enable students to have positive attitude as well as interest and confidence in the mathematical learning.

• Proceedings of the Korea Information Processing Society Conference
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• 2017.11a
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• pp.861-864
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• 2017

사이버 ISR을 통하여 정보를 획득하는 과정에서 데이터를 추출하고 이를 스스로 가공하여 의사결정에 도움을 줄 수 있는 에이전트를 연구하는 과정에서 폐쇄망에 침투했을 경우 이를 효과적으로 감시 정찰할 수 있는 방법을 논의한다. 폐쇄망으로 인하여 침투한 컴퓨터에 심어진 에이전트는 C&C서버와 원활한 교류가 불가능하게 되는데, 이때 스스로 살아남아 지속적으로 데이터를 수집하며, 분석을 하기 위해서는 한정된 자원과 시간을 활용하여야 발각되지 않고 계속하여 임무를 수행할 수 있다. 특히 분석하는 과정에서 많은 자원과 시간을 활용하는 때 이를 해결하기 위해 본인은 점진적 학습방법을 이용하는 것을 제안하며, 일괄학습 방법과 함께 비교하는 실험을 해보았다.

• 한국정보교육학회:학술대회논문집
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• 2007.01a
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• pp.165-172
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• 2007

e-Learning 학습의 효율성을 극대화하기 위해서는 학습자의 인지 능력에 맞는 아이콘 설계가 중요하다. 따라서 본 연구는 e-Learning콘텐츠를 제공하고 있는 시 도 교육청 사이버 가정학습 사이트의 아이콘을 수집하여 유형별로 분석하고 초등학생들의 아이콘 인지도를 조사하였다. 의미 표현 방법상 분류에 의한 아이콘들이 고르게 높은 인지도를 나타냈고 구체적인 메타포를 이용하여 설계한 아이콘들이 인지도가 높았다. 따라서 아동들의 인지 발달에 맞는 구체적인 메타포를 이용하여 아이콘을 설계해야 할 것이다.