• Proceedings of the Korea Information Processing Society Conference
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• 2022.05a
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• pp.528-530
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• 2022

심층강화학습에 완전 연결 신경망과 합성곱 신경망은 잘 활용되는 것에 반해 순환 신경망은 잘 활용되지 않는다. 이는 강화학습이 마르코프 속성을 전제로 하기 때문이다. 지금까지의 강화학습은 환경이 마르코프 속성을 만족하도록 사전 작업이 필요했다, 본 논문에서는 마르코프 속성을 따르지 않는 환경에서 이러한 사전 작업 없이도 순환 신경망의 은닉 상태를 통해 마르코프 속성을 학습함으로써 학습 성능을 개선할 수 있다는 것을 소개한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2022.11a
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• pp.75-76
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• 2022

현재 산업용 로봇 팔의 경로 계획을 생성할 때, 로봇 팔 경로 계획은 로봇 엔지니어가 수동으로 로봇을 제어하며 최적 경로 계획을 탐색한다. 미래에 고객의 다양한 요구에 따라 공정을 유연하게 변경하는 대량 맞춤 시대에는 기존의 경로 계획 수립 방식은 부적합하다. 심층강화학습 프레임워크는 가상 환경에서 로봇 팔 경로 계획 수립을 학습해 새로운 공정으로 변경될 때, 최적 경로 계획을 자동으로 수립해 로봇 팔에 전달하여 빠르고 유연한 공정 변경을 지원한다. 본 논문에서는 심층강화학습 에이전트를 위한 학습 환경 구축과 인공지능 모델과 학습 환경의 연동을 중심으로, 로봇 팔 경로 계획 수립을 위한 심층강화학습 프레임워크 구조를 설계한다.

• The Journal of the Korea Contents Association
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• v.21 no.7
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• pp.459-468
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• 2021

The purposes of this study were to present the learning framework and curriculum direction of the English education major and to suggest ways to enhance the English education-related curriculum and core competency more effectively. For these purposes, the needs of students in the English education department were identified and analyzed. After that, based on these results, Education 2030 Project and the 2015 revised English curriculum, the core competency-oriented education method of the English education department was proposed. The survey results are as follows: Many students in the Department of English Education were interested in their competencies, but did not know what they needed and how to actually strengthen them. They wanted to strengthen their competency with a core competency-oriented major curriculum. The results of this study, reflecting the national needs and core competencies of universities, suggested the direction for the development of the curriculum of the Department of English Education. In addition, the curriculum, teaching methods, and evaluation methods were organically linked to suggest ways to cultivate the required competencies more effectively.

• Proceedings of the Korea Information Processing Society Conference
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• 2020.11a
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• pp.1034-1035
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• 2020

인공지능은 스스로 학습하며 기존 통계 분석보다 탁월한 분석 역량을 지니고 있어 스마트팩토리 혁신에 새로운 전기를 마련할 것으로 기대된다. 이를 증명하듯 스마트팩토리의 주요 분야인 공정 간 연계 제어, 전문가 공정 제어, 로봇 자동화 등에서 활발한 연구가 이어지고 있다. 본 논문에서는 소포물 분류 시스템에 전통적인 룰 기반의 제어 방식 대신 다중 에이전트 강화 학습 제어 방식을 설계 및 적용하여 효과적인 행동 제어가 가능함을 입증한다.

• Proceedings of the Korea Contents Association Conference
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• 2018.05a
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• pp.289-290
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• 2018

본 연구는 강지혜의 '고등학교 무용전공 지도자의 지도유형과 지도자 신뢰 및 만족의 관계 연구'를 바탕으로 한 무용지도유형과 지도자 신뢰도의 관계에 대한 논의이다. 기존의 연구는 2010년 설문조사를 통해 이루어졌다. 본 연구는 무용전공생과 무용지도자의 관계를 논의를 통해 탐색하고 분석함으로써 실기 수업에 있어 무용수행 효율성을 높이고 무용지도자 역할을 강화하는 방안을 제시하는데 연구의의가 있다. 본 연구의 논의에 따르면 빠른 속도로 변화하고 있는 융복합 사회 속에서 교육을 받는 학생들에게 무용지도자의 신뢰를 높이며 교육이 획일적인 지도자 중심의 지도보다는 학생들의 의견을 수용하여야 하는 무용지도자야하며, 학생들에 대한 세심한 배려와 상호작용하는 것은 무용전공생에게 지도자에 대한 신뢰와 무용지도자의 지도효율성과 무용수행도 높아질 수 있음과 동시에 무용지도자의 역할이 강화될 것이다.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.23 no.4
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• pp.9-15
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• 2023

Existing simple statistics-based recommendation systems rely solely on students' course enrollment history data, making it difficult to identify classes that match students' preferences. To address this issue, this study proposes a personalized major subject recommendation system based on deep reinforcement learning (DRL). This system gauges the similarity between students based on structured data, such as the student's department, grade level, and course history. Based on this information, it recommends the most suitable major subjects by comprehensively considering information about each available major subject and evaluations of the student's courses. We confirmed that this DRL-based recommendation system provides useful insights for university students while selecting their major subjects, and our simulation results indicate that it outperforms conventional statistics-based recommendation systems by approximately 20%. In light of these results, we propose a new system that offers personalized subject recommendations by incorporating students' course evaluations. This system is expected to assist students significantly in finding major subjects that align with their preferences and academic goals.

• Proceedings of the Korea Information Processing Society Conference
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• 2008.11a
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• pp.839-842
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• 2008

기존에 사용 중인 컴퓨터 입력기기인 키보드와 마우스는 유비쿼터스 환경에서의 입력기기로서는 휴대성과 직관성의 결여로 사용하기에 부적합하다. 유비쿼터스 환경에서는 휴대성과 직관성이 강화된 차별화된 입력기기가 필요하다. 본 연구에서는 유비쿼터스 환경에 맞는 입력기기에 사용 가능한 센서에 대해 실험하고 그 결과를 바탕으로 유비쿼터스 환경에 맞는 입력기기를 제안하고자 한다.

• Journal of Engineering Education Research
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• v.10 no.1
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• pp.20-33
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• 2007

This paper is on the analysis of the survey results for the recognition of the practical engineering education among the engineering educators and educatees including alumni. After performing the survey, we classify 4 forms of practical engineering education, company-oriented, major-field-oriented, basic-engineering-knowledge-oriented and others. Also we survey what are necessary for the students to get employed. The survey results indicate that the respondents understand the practical engineering education as company-oriented and many of them also recognized basic-engineering-oriented engineering education. For the employment, the professors and the alumni focus on the personal character but the students feel that major field knowledge and the English ability are vital to the employment tests. Concerning the opinion for the students on the shortage of ability as an engineer, the professors respond the major field knowledge while the students and the alumni answer the English ability. This research produces some interesting results on the direction of practical engineering education, but needs more detailed and extended survey and analysis.

• Composites Research
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• v.19 no.3
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• pp.1-6
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• 2006

As the structures of the high performance electronic equipments and devices recently become more complex, the electromagnetic interference (EMI) and compatibility (EMC) have been very essential for commercial and military purposes. Thus, sensitive electrical devices and densely packed systems need to be protected from electromagnetic wave. In this research, glass fabric/epoxy composites containing conductive multi-walled carbon nanotube (MWNT) and carbon fiber/epoxy composites as electrical shielding materials were fabricated and electrical properties of the composites were measured. The concerning frequency band is from 300 MHz to 1 GHz. The performances of composite shielding enclosures were predicted using electromagnetic wave 3-D simulation tool, CST Microwave Studio. The shielding enclosure made of carbon fiber/epoxy composites were fabricated and the shielding effectiveness (SE) was measured in the anechoic chamber.

• Journal of architectural history
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• v.32 no.1
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• pp.35-45
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• 2023

Bongsu(Beacon Fire Station) is a facility that sends signals with fire and smoke and has been used in Korea since the Three Kingdoms period. This facility was installed to know the north and south crises. This trend continues until the Joseon Dynasty, and it has been somewhat completed in the 17th century. In previous studies, beacon fire was identified mainly from the border area to Hanyang. Based on this, it was classified into Gyeongbongsu, Yeonbyeonbongsu, and Naejibongsu. However, it is difficult to define the characteristics of beacon fire in coastal areas only with this classification. In the case of beacon fire in island areas, there was a tendency to value communication connection within the region rather than connection with the capital. As a case analysis for this, an academic review was conducted with the cases of Ganghwa Island and Jeju Island. As a result, it was confirmed that the role and character of the beacon vary depending on the defense system and the physical distance from the land, even if it has the topographical commonality of the same island.