• Journal of Digital Convergence
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• v.15 no.2
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• pp.335-345
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• 2017

It is necessary for an instructor to understand the student's team building behavior for an effective guidance of team activities. In this study, we developed an agent-based computational model for simulating the student's self-controlled behavior. We validated the model by comparing the actual behavior. Through the simulation, we found that the time to stabilization of team formation and the ratio of the students having no team are decreasing as the population of the student increases. However, we also found that over a certain amount of population, the time and the ratio do not show much progress in the difference. The simulation also shows that the more heterogeneity between the students the higher chance of delaying the team formation and increasing the ratio. We expect to use the model as a tool for guiding and supporting students' team activities.

• Journal of the Korea Society for Simulation
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• v.19 no.4
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• pp.169-178
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• 2010

Agent based simulation is an approach for the analysis of a system's long term behavior where the entities in the system behave independently by their own judgement and memory, but influence each other to cope with given environment. In this paper we developed an agent based simulation model for the analysis of behavioral mechanism of team formation. In the process of team formation members' mutual preference is an important factor although each member can join up with one's own will. Also a team performance can vary by the member's own experience. We implemented the developed model using Netlogo 4.1, and verified the model by simulation. From the simulation results we found that the model successfully performed necessary functions using behavioral rules, judgments, and evolutionary processes by memory. As a further study we will be able to apply the model for analyzing various ecological behavior of team formation.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2022.06a
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• pp.350-352
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• 2022

자율운항선박을 IMO 자율화등급 3단계 이상으로 운용하기 위해서는 내·외부 통신시스템의 사이버보안뿐만 아니라 실시간으로 데이터를 교환하는 데이터 및 시스템 사이버안전에 대한 고려가 필수적으로 요구된다. 본 연구에서는 자율운항선박 사이버안전체계 구축방안에 대해서 살펴본다. 자율운항선박 사이버안전체계 구축을 위해서는 선박 내 사이버위협을 실시간으로 탐지하고 영향을 모니터링하는 통합 보안 시스템 구축이 필요하며, 선박 사이버안전 설계 타당성을 검증하는 사이버리스크평가 기술, 사이버안전체계를 검증하기 위한 CVE(Common Vulnerabilities Enumeration)기반 취약성 진단 및 침투테스트 기술, V-Model을 활용한 통합 소프트웨어 품질인증 기술, ISO 25024 기반 데이터 무결성 검증 기술 적용이 필요하다.

• KASI NEWSLETTER
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• s.53
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• pp.1-8
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• 2005

오 명 부총리 겸 과학기술부 장관 우리 연구원 방문/ 창립 31주년 기념식 개최/ 동아시아 4개 지역, 동아시아 핵심 천문대 연합체(EACOA) 결성/ 국내 발견 소행성, '홍대용', '김정호'로 명명/ '대한민국 별 축제 2005' -아인슈타인 상대성이론 100주년 기념/ 2005 세계우주주간 축제 참가/ 성남학생 과학축제/ 화성축제 행사 개최/ ePoster 자체 제작 사용/ 추계 체육 행사실시/ 팀웍의 날 실시/ 직원 동정/ 학회동정/ 콜로키움 혁신으로 천문연구원 두 배로 키우기/ 혁신선포식 및 혁신 마인드 강화 워크숍 개최/ 혁신 리더 워크숍 개최/ 홍보사업팀-전산정보팀 혁신 워크숍/ 제안제도 활성화 방안 시행/ 우리는 이미 항구를 떠났다.

• Ecology and Resilient Infrastructure
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• v.6 no.3
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• pp.154-162
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• 2019

Lateral connectivity between the channel and the floodplains has been damaged by the levee construction and channelization in most streams of South Korea. The purpose of this study was to develop a technique for easily and remotely assessing lateral connectivity using GIS in the streams and to evaluate the effectiveness of the assessment method by applying it to Cheongmi-cheon Stream, a representative stream in the central Korean Peninsula. The metrics of the lateral connectivity assessment are composed of (1) existence of remaining wetlands and (2) land use property as a habitat quality of the former floodplain outside the levee and (3) existence of levee barrier, (4) connectivity to the stream and (5) connectivity to the upland natural habitats as a connectivity from the channel through floodplain to the upland forest. According to the result of applying the assessment method to Cheongmi-cheon Stream, the lateral connectivity was severely damaged due to the levee construction and land use change in the former floodplain. The GIS-based assessment of the lateral connectivity developed in this study is expected to be used as a useful tool for identifying limitations of current connectivity in various attempts to restore lateral connectivity in riparian ecosystems.

• Electronics and Telecommunications Trends
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• v.18 no.5 s.83
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• pp.11-18
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• 2003

IETF NEMO 워킹그룹에서는 IPv6 이동 네트워크에서의 이동성 지원을 위한 여러 가지 방법들이 제안되었다. 특히, 최근 결성된 디자인 팀에서는 기존에 제안된 여러 방법들을 접목하여 NEMO Basic Support 프로토콜을 제안하였고, 워킹 드래프트로 채택되었다. 본 고에서는 기존에 제안되었던 여러 가지 망 이동성 지원 방법들을 분석하고, 현 표준화 동향에 대해서 기술한다.

• 한국벤처창업학회:학술대회논문집
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• 2007.11a
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• pp.111-140
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• 2007

This paper was analyzed to improve internal corporate venture system in public companies. The problems of internal corporate venture systems in a public company were as follows: First, lack of the CEO's willingness in venture business was shown. The culture of venture business also was not mature; Second, the employees were behind the effort to develop their business ability; Third, the objective views are needed to screening venture items and evaluation; Fourth, to measure performance of internal corporate venture, a clear basis and measure system were needed. Fifth, the reward was restricted; Finally, the mother-company did not invest any money for the spin-outed ventures The results of the paper were as follows: First, the CEO's support and effusion of venture culture were needed for successful internal corporate venture system; Second, a public company has to provide education program for venture and information--sharing system; Third, outside consultant may be utilized in finding venture items and feasibility evaluation. Fourth, each venture team may be provided a clear object and specific evaluation system based on characteristic of each team; Fifth, performance-base reward system is needed to enhance motivation; Finally, the public company has to provide find for the spin-off venture by utilizing government system and forming venture capital funds.

• Proceedings of the Korea Information Processing Society Conference
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• 2021.05a
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• pp.6-8
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• 2021

최근 COVID-19의 백신이 개발되어 접종을 시작했다. 정부는 집단면역 생성을 위해 접종 목표치를 설정하고, 민관합동신속대응팀을 설립하는 등의 조치를 취하고 있다. 하지만 COVID-19의 백신이 다른 백신에 비해 개발 기간이 훨씬 짧을뿐더러, 효과가 입증되지 않아 신뢰를 얻지 못하고 있다. 블록체인은 거래 당사자 간의 거래정보를 네트워크에 참여하는 모든 구성원들이 공동으로 기록, 검증, 저장하는 분산장부 기술로 공인된 제3자 없이도 무결성 및 신뢰성을 확보할 수 있다. 이에 본 논문에서는 COVID-19 백신의 신뢰도를 제고하기 위해 블록체인을 기반으로 한 백신 접종 이력 관리 시스템을 설계하고, 향후 QR코드 등의 방식과 연동하여 백신 여권 등으로의 확장 가능성을 제시한다.

• Journal of Broadcast Engineering
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• v.27 no.5
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• pp.738-750
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• 2022

In this study, we reviewed and discussed whether auditory stimuli with short length can evoke emotion-related neurological responses. The findings implicate that if personalized sound tracks are provided to XR users based on machine learning or probability network models, user experiences in XR environment can be enhanced. We also investigated that the arousal-relaxed factor evoked by short auditory sound can make distinct patterns in functional connectivity characterized from background EEG signals. We found that coherence in the right hemisphere increases in sound-evoked arousal state, and vice versa in relaxed state. Our findings can be practically utilized in developing XR sound bio-feedback system which can provide preference sound to users for highly immersive XR experiences.

• The Journal of the Korea Contents Association
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• v.21 no.12
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• pp.66-75
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• 2021

The research is centered towards analyzing the usage status of YouTube platform and the nature of content supplied to YouTube by selecting Korean two Traffic Broadcastings Based on TBS(Traffic Broadcasting System) and TBN(Traffic Broadcasting Network). TBS operates 'Citizen's Broadcasting', which has 1.1 million subscribers among 13 YouTube channels, as its main channel. TBN has only 15,000 subscribers to its main 'TBN Tong', and YouTube channels in 12 local networks. TBS which has a dedicated YouTube manpower, is far ahead of TBN in terms of YouTube channel management and content composition. Both broadcasters are passive about creating new media content due to job stability. For the development of the YouTube platform for these two broadcasters, organizational changes within traffic broadcasting and changes in the perception of members are required, and live broadcasting and discovery of star creators are required. In the changing media environment two traffic broadcastings need a program distribution strategy that can be included in various media platforms.