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정회경(鄭會卿) 한국비교정부학회 2005 한국비교정부학보 Vol.9 No.2
The purpose of this study is to analyze the significance of media education and to compare media education policy of Korea with leading countries like British, Canada and the U.S.A. The thesis of media education has been emphasized with the development of media technologies for growing the abilities to understand and use the media exactly in everyday life of child and youth. In many countries including Korea, media education programs about newspaper, broadcasting, advertising, films etc. have been attempted in school, society and at home. Especially media education in British, Canada and the U.S.A. is very successful from various points of view and gives us many advices. Above all things media education within school is the most important. Therefore this study suggested alternative ideas for media education policy in Korea as follows emphasizing of understanding a concept media literacy for child and youth, organizing of its curriculum and learning methods, cultivating their special teachers, developing various materials and training facilities about media, and building up the evaluation system gradually in school environment.
영상센서를 이용한 실외 무인항공기의 충돌회피에 관한 연구
정회조(Hoijo Jeaong),이승빈(Seungbin Lee),김승균(Seungkeun Kim),석진영(Jinyoung Suk) 제어로봇시스템학회 2021 제어·로봇·시스템학회 논문지 Vol.27 No.11
This study investigates real-time path planning for UAVs (Unmanned Aerial Vehicles) to avoid obstacles in an outdoor environment in a three-dimensional space. First, we implement an algorithm to convert from Octomap to a grid map to implement a global grid map. Secondly, the ESDF (Euclidean Signed-Distance Field) algorithm is integrated into the path planning obtained through the JPS (Jump Point Search) algorithm, and the B-Spline algorithm is applied to modify the path to consider the dynamic constraint of UAVs. Finally, path planning algorithms are verified in real-time through simulation and flight testing. The simulation is based on the Gazebo environment using the open-source autopilot PX4 with the ROS. A depth camera performance is compared for an outdoor flight test to select a depth camera mounted on the drone. Moreover, the practical obstacle-avoidance performance of the proposed real-time route planning in an outdoor space is confirmed through a flight test.