• Title/Summary/Keyword: 원격강의 플랫폼

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A basic study on mathematics telelearning system (수학과 원격 수업 체제 기초 연구)

  • Kang Wan;Chang Kyung Yoon;Lew Hee Chan;Paik Seok Yoon
    • Journal of Elementary Mathematics Education in Korea
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    • v.2 no.1
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    • pp.61-80
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    • 1998
  • Whereas research on telelearning in educational technology area is lively done, that in mathematics education area is not. Related to the open education, telelearning has 4 models: the distance classroom model, the front-end system design, the knowledge construction model, and the teaching model based on data. S/W, C/W, and H/W are the components of telelearning system. For an effective mathematics telelearning system, H/W and S/W which use multimedia with complex multimode information such as text, graphics, animation, video, and audio are necessary. Examples of telelearning systems on going are MIPOS, SDS telelearning system, telelearning system of the Naechon Elementary School, and Doorae Multimedia Application Development Platform.

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A study on metaverse construction and use cases for non-face-to-face education (비대면 교육을 위한 메타버스 구축 및 활용 사례에 대한연구)

  • Kim, Joon Ho;Lee, Byoung Sung;Choi, Seong Jhin
    • The Journal of the Convergence on Culture Technology
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    • v.8 no.1
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    • pp.483-497
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    • 2022
  • Recently, due to COVID-19, non-face-to-face online lectures are being held all over the world. In higher education in the post-corona era, distance learning has become the main teaching and learning method. At this time, Metaverse is being proposed as a new alternative. Metaverse has basic elements such as avatars, 3D space, and activities accompanied by interaction, which can be seen as a difference compared to existing VR (Virtual Reality) contents. This study designed and built an educational metaverse platform that can be applied to actual lectures by reflecting the three elements of the metaverse.In addition, we implemented a cross-device-platform that supports various devices such as HMDs, smartphones, tablets, and PCs by reflecting user requirements through usability tests such as middle school, high school, college students, and parents, so that anyone can easily participate in Metaverse lectures. Currently, the metaverse platform is being developed and serviced in various ways, but there are hardly any services designed for education. Just as services such as Zoom, the existing video conferencing solution, were used for non-face-to-face education, some functions of the currently serviced metaverse are utilized for education and used in the form of a one-time event. The educational metaverse platform developed through this study is expected to be a reference in constructing the metaverse for education in the future.

WebRTC-Based Remote Collaborative Learning Platform (WebRTC 기반 원격 협업 학습 플랫폼 기술 연구)

  • Oh, Hyeontaek;Ahn, Sanghong;Yang, Jinhong;Choi, Jun Kyun
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.40 no.5
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    • pp.914-923
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    • 2015
  • Recently, as the number of smart devices (such as smart TV or Web based IPTV) increases, the way of digital broadcast contents is changed. This change leads that conventional broadcast media accepts Web platform and its services to provide more quality contents. Based on this change, in education field, education broadcasting also follows the trend. The traditional education broadcasting platforms, which just delivered the lecture in one-way, are utilized the Web technology to make interaction between teacher and student. Current education platforms, however, are insufficient to satisfy users' demands for two-way interactions. This paper proposes a new remote collaborative learning platform which able to provide high interactivity among users. Based on new functional requirements from original use case, the platform provides collaborative contents sharing and collaborative video streaming techniques by utilizing WebRTC (Web Real-Time Communication) technology. The implementation demonstrates the operability of proposed system.

Design and Implementation of a Virtual Computer Lab System using Cloud Computing (클라우드 컴퓨팅을 이용한 가상 컴퓨터 교육 시스템 설계 및 구현)

  • Lee, Bong-Hwan
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.15 no.9
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    • pp.1910-1917
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    • 2011
  • In this paper, a cloud computing platform is designed and implemented based on an open source cloud platform, OpenNebula, and Xen hypervisor on each node for efficient computer lab system. For the purpose of convenient management, a web-based user interface has been developed for the cloud virtualization system. Once individual virtual machine is allocated to a user based upon class schedule, each user can access the virtual machine remotely and use appropriate operating system and application programs. The developed system can reduce computer lab upgrade cost, management cost, and administration time considerably.

Study on water pollution measurement and integration monitoring system with B-TOX (B-TOX를 이용한 오염수 측정 및 통합관리시스템 구현에 관한 연구)

  • Yang, Jae-Soo;Han, Yong-Hwan;Lee, Young-Ha;Kim, Yoon-Hyun;Kim, Jing-Young
    • The Journal of the Institute of Internet, Broadcasting and Communication
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    • v.10 no.2
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    • pp.61-67
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    • 2010
  • In operating estimation system, the river and lake is almost simple monitoring system or independent monitoring system. But the present system has many weak points about the concurrent analysis ability of various information collection. Sensors generating the information is not accurate. Therefore, we have something that can be improved. Although we have the related facilities of the purification plant, forebays and sewage disposal plant, and suffer from the difficulty about lack of system of estimation, management and control. As a result of this paper, monitoring system can observe the water pollution and various water environment of whole country. Also, through the sensors of USN, Zigbee, RFID and middle ware, which can service and construct service platform, we present standard plan of remarkable scalability service platform.

Enhanced Primary Production in Response to Freshwater Inflow in the Nakdong River Estuary: Characteristics of land-Ocean Coupling (LOC) (낙동강 하구에서 담수 유입에 따른 연안 클로로필-a 증가 : 낙동강의 육상-해양 coupling 패턴 분석)

  • KIM, SUHYUN;AN, SOONMO
    • The Sea:JOURNAL OF THE KOREAN SOCIETY OF OCEANOGRAPHY
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    • v.26 no.2
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    • pp.96-109
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    • 2021
  • Since terrestrial input plays a major role in coastal primary production, an understanding of land-ocean coupling (LOC) is key to understand coastal ecological changes. In this study, the LOC has been classified into three stages (i.e., the baseflow, plume event and residual flow). In order to characterize its pattern in Nakdong River estuary, multi-platform data were obtained from remote sensing (geostationary ocean color image (GOCI)), in-situ measurement (marine environment information system (MEIS)), on-site measurement (discharge data and meteorological data). The MEIS data were grouped into three stages of LOC using principal component analysis (PCA), and the LOC (2013 ~ 2018) was examined at each stage using multi-platform data. In the Nakdong River estuary, the maximum value of chlorophyll-a (chl-a) was unexpectedly appeared during the plume event. It is assumed that there was no significant increase in turbidity, expected during the typical plume event, together with the weak flushing effect, caused the enhanced phytoplankton growth. Compared with other estuaries, LOC is common in estuaries affected by freshwater inflow, but LOC has different pattern depending on the size of the plume. While estuaries that form small plumes of about 10 km (low freshwater discharge and weak flushing effect) observed high chl-a in the plume event because the phytoplankton can response to the increased nutrient more rapidly. estuaries that form large plumes of more than 100 km est (high freshwater discharge and strong flushing effect) follow the typical LOC pattern conceptualized in this study (high chl-a in the residual flow).