• Journal of Engineering Education Research
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• v.12 no.1
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• pp.3-16
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• 2009

The purpose of this study is to prepare diverse measures to enhance the utilization of national authorized qualification. The detail objectives of this study are first, to re-establish the utilization scope and range of national authorized qualification through analysis of advance research and theory in various fields of learning on the function of qualification; and second, to set the direction to strengthen the utilization of national authorized qualification. Based on discussions on the various fields of learning on the function of qualification, this study divided the utilization scope of qualification into personal utilization for the benefit of the qualification acquirer him or herself and public utilization for the social and economic benefits. And according to this distinction, we prepared measures to strengthen the utilization of national authorized qualification. First of all, as a way to strengthen personal utilization of the national authorized qualification, we prepared measures to enhance accessibility and facilitate further improvement. As a means to enhance accessibility, we proposed restriction on setting the application condition, diversification of qualification authorization method, facilitation of partial qualification system and minimization of expense required to acquire qualification. Also for the further improvement, we proposed creation of job-level centered grade system and development of job-level centered qualification item by stage. For strengthening the public utilization of national authorized qualification, we come up with ways of strengthening flexibility, transparency, public trust and compatibility. As a way to strengthen flexibility, we proposed establishment of qualification demand monitoring system, expansion of direct participation of users on qualification management, establishment of qualification expiration period and its renewal. For the strengthening of transparency, we proposed to build general qualification information system and to utilize qualification recommendation system. To strengthen public trust, we proposed to strengthen the management of qualification management regulation, secure independency, establish internal audit system and strengthen post management of national authorized qualification. And lastly, we suggested that compatibility comparison standard between qualification and qualification level standard be developed for the strengthening of compatibility.

• Industry Promotion Research
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• v.9 no.4
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• pp.105-113
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• 2024

This study evaluates the safety and usability of three underground walkways in Seoul by applying Crime Prevention Through Environmental Design (CPTED) principles. The 2024 survey focused on five key concepts: Access control, Surveillance enhancement, Maintenance, Legibility enhancement, and Territorial usability enhancement. The results showed that Access control in the underground walkways was limited. While Surveillance enhancement proved effective in some walkways, Legibility and Territorial usability enhancements were generally lacking. Ultimately, using the Analytic Hierarchy Process (AHP) for evaluation, both the Yeoksam and Jonggak underground walkways received a "Very Good" rating, while the Seolleung underground walkway received a "Good" rating. The research highlights the need for improvements in applying CPTED principles to underground walkways and emphasizes the importance of continuous maintenance. These measures, the study suggests, will contribute to crime prevention and enhance the overall usability of these spaces.

• Broadcasting and Media Magazine
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• v.27 no.2
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• pp.26-34
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• 2022

강화 학습 기술은 많은 분야에서 매우 적극적으로 활용되는 기계 학습 기술 중의 하나이며 최근 이를 사용한 많은 연구 결과를 다양한 기관에서 활발하게 보여주고 있다. 본 고에서는 이러한 강화 학습 기술에 대한 기본적인 소개와 해당 기술의 심층 강화 학습으로의 발전에 대해서 논한다. 더불어 이러한 심층 강화 학습의 많은 분야 중에서 최근 활발히 논의되는 모방 학습에 대해서 알아보고 그 활용성에 대해서 논한다.

• Annual Conference of KIPS
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• 2021.05a
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• pp.483-486
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• 2021

기존의 심층 강화학습은 상태, 행동, 정책 등을 모두 벡터 형태로 표현하는 강화학습으로서, 학습된 정책의 일반성과 해석 가능성에 제한이 있고 영역 지식을 학습에 효과적으로 활용하기도 어렵다는 한계성이 있다. 이러한 문제점들을 해결하기 위해 제안된 새로운 관계형 강화학습 프레임워크인 dNL-RRL은 상태, 행동, 그리고 학습된 정책을 모두 논리 서술자와 규칙들로 표현할 수 있다. 본 논문에서는 dNL-RRL을 기초로 공장 내 운송용 모바일 로봇의 제어를 위한 행동 정책 학습을 수행하였으며, 학습의 효율성 향상을 위해 인간 전문가의 사전 영역 지식을 활용하는 방안들을 제안한다. 다양한 실험들을 통해, 본 논문에서 제안하는 영역 지식을 활용한 관계형 강화학습 방법의 학습 성능 개선 효과를 입증한다.

• Review of KIISC
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• v.19 no.3
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• pp.14-17
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• 2009

최근 IT 분야에서 클라우드 컴퓨팅에 대한 관심과 연구가 진행되고 있다. IT 기술의 기술적/산업적 성장은 유비쿼터스 컴퓨팅의 실현을 목표로 확장가능하고 자원의 연동을 위한 클라우드 컴퓨팅의 관심을 높이고 있다. 그러나 클라우드 컴퓨팅의 실현을 위해서는 보안적인 문제점 해결이 선결 과제이다. 클라우드 컴퓨팅을 통해 데이터가 연동되고 자원을 다양하게 활용하는 것에는 데이터 보호와 자원의 관리 정책, 기업 비밀 관리나 개인의 프라이버시 측면에서의 문제점도 존재한다. 따라서 본 고에서는 클라우드 컴퓨팅의 분류 체계와 보안적인 문제점을 분석하여 클라우드 컴퓨팅 이용자를 위한 보안 가이드라인을 제시한다. 가이드라인을 기반으로 클라우드 컴퓨팅의 산업적 확장성을 강화하고 활용성을 높임으로써 서비스의 확대 및 자원의 효율적인 활용을 강화하고자 한다.

• Proceedings of the Korea Database Society Conference
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• 1995.12a
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• pp.43-49
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• 1995

최근 국내외적으로 기업경쟁이 치열해지고 개인 작업뿐만 아니라 그룹 공동작업을 지원하여 조직 전체의 팀웍과 작업 생산성을 향상시켜 "경영 효율을 증대"하고 "조직 경쟁력을 강화"하는 전략적 가치가 부각되면서 조직 경쟁력을 강화하는 방안으로 그룹웨어의 활용 범위가 급속히 넓혀지고 있다. 본 논문에서는 이러한 그룹웨어에서의 멀티미디어의 역할과 활용방안을 조명해 보고자 한다.

• Industry Promotion Research
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• v.9 no.4
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• pp.55-64
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• 2024

The smart factory has already achieved a certain level of establishment in domestic industries. In contrast, empirical research on the smart factory is not sufficient. Therefore, examining how the smart factory has contributed to firm performance is necessary. Based on these research needs, this study analyzed smart factory's mediating effects in terms of ambidextrous innovation's impact on firm performance. Based on the analysis results mentioned above, this study recommends increasing follow-up management and strengthening training for utilizing capacity to increase smart factory utilization that improves the establishment level for smart factories. It is required to upgrade the establishment level to boost firm performance, and increased follow-up management and enhanced training should be carried out to maximize the utilization capacity of corporates from the current level of smart factory utilization.

• Convergence Security Journal
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• v.23 no.1
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• pp.63-68
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• 2023

In this study, in relation to blockchain protocol and network security, we study the configuration of blockchain and encryption key management methods on smart contracts so that we can have a strong level of response to MITM attacks and DoS/DDoS attacks. It is expected that the use of blockchain technology with enhanced security can be activated through respond to data security threats such as MITM through encryption communication protocols and enhanced authentication, node load balancing and distributed DDoS attack response, secure coding and vulnerability scanning, strengthen smart contract security with secure consensus algorithms, access control and authentication through enhanced user authentication and authorization, strengthen the security of cores and nodes, and monitoring system to update other blockchain protocols and enhance security.

• KIPS Transactions on Software and Data Engineering
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• v.10 no.7
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• pp.263-270
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• 2021

Reinforcement learning(RL) is the method to find an optimal policy through training. and it is one of popular methods for solving lifesaving and disaster response problems effectively. However, the conventional reinforcement learning method for disaster response utilizes either simple environment such as. grid and graph or a self-developed environment that are hard to verify the practical effectiveness. In this paper, we propose the design of a disaster response RL environment which utilizes the detailed property information of the disaster simulation in order to utilize the reinforcement learning method in the real world. For the RL environment, we design and build the reinforcement learning communication as well as the interface between the RL agent and the disaster simulation. Also, we apply the dimension reduction method for converting non-image feature vectors into image format which is effectively utilized with convolution layer to utilize the high-dimensional and detailed property of the disaster simulation. To verify the effectiveness of our proposed method, we conducted empirical evaluations and it shows that our proposed method outperformed conventional methods in the building fire damage.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2019.11a
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• pp.281-283
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• 2019

항만은 국가 주요보안시설로 철저한 경비와 보안이 요구되며, 철저한 안전관리가 필요함. 4차 산업혁명 시대의 도래로 드론의 범용성이 넓어짐에 따라, 드론을 활용한 항만 내 안전보안 체계 강화가 가능함. 본 발표를 통해 여수·광양항의 드론 활용 사례 및 향후 계획을 논의하고자 함.