• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2003.05a
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• pp.700-703
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• 2003

In recent years, amount of studies on application of wetbased educational system are proceeding in educational field. This study proposes design and implementation for web-based learning system using WMT in order to practise assistance learning between teacher and students on the web. For system design and implementation, this study utilizes Windows 2000 Server and Windows Media Technology. Using WMT, we make teaming materials and put them in web-based educational system. It should be possible to make teaming in accordance with Windows Media Player for a long-distance students. As a result, this study expects to accomplish a web-based learning between teacher and student on the web.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.36 no.1
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• pp.33-39
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• 2018

As the retrieval accuracy of PWV estimates from GPS measurements is proportional to the accuracy of water vapor WMT, the WMT model is a significant formulation in the conversion of PWV from the GPS ZWD. The purpose of this study is to develop a MWMT model for the retrieval of highly accurate GPS PWV using the radiosonde measurements from six upper-air observing stations in the region of Korea. The values of 1-hr PWV estimated at four GPS stations during one year are used to evaluate the validity of the MWMT model. It is compared to the PWV obtained from radiosonde data that are located in the vicinity of GPS stations. Intercomparison of radiosonde PWVs and GPS PWVs derived using different WMT models is performed to assess the quality of our MWMT model for Korea. The result in this study indicates that the MWMT model is an effective model to retrieve the enhanced accurate GPS PWV, compared to other GPS PWV derived by Korean annual or global WMT models.

• Korea Multimedia Society
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• v.6 no.3
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• pp.70-80
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• 2002

• Journal of Korea Multimedia Society
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• v.4 no.5
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• pp.446-454
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• 2001

A long-distance education method using the computational environment has been developed and implemented for quite some time. However, there has been some difficulty in the simulation of face-to-face instruction due to limitations in performance of the computers and the networks. Continued development of multimedia technologies has now made it possible to simulate face-to-face instruction, recording the teachers' instructions in the form of a screen dump. In this paper, we propose a system that allows the teacher to make loaming materials available on the Web using Window Media Technology(WMT). This technology also allows remote site users to view the contents at their convenience. A media encoder acquires the lessons and stores them as moving pictures. The lessons are displayed on the screen as the teacher explains them. The learning materials are stored in a Windows media file format, the file is stored on a lecture server and provided to the user using a streaming method in real time. The users can view the contents on the Web without requiring a special player. The proposed system consists of a lecture writer module, a lecture server module and a lecture client module.

• Proceedings of the Korea Contents Association Conference
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• 2004.05a
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• pp.3-24
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• 2004

• Proceedings of the Korea Information Processing Society Conference
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• 2001.10b
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• pp.1265-1268
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• 2001

인터넷의 급속한 보급과 사용자의 증가로 인터넷 서비스의 하나인 웹 중요성이 크게 대두되고, 이 흐름의 일환으로 여러 종류의 컴퓨터 응용이 쏟아져 나오고 있다. 이러한 주류 중에 한 흐름인 원격강의시스템은 미래 학습장을 발전시킬 수 있다는 점에 주안점을 두고 활발한 연구가 이루어지고 있는 분야이다. 원격강의시스템은 장소에 크게 구애받지 않고 교수자의 강의를 학습자가 같은 시간에 바로 학습한 수 있는 실시간 서비스와 교수자가 미리 강의한 내용을 학습자가 원하는 시간에 원하는 장소에서 학습할 수 있는 비 실시간 서비스로 나눌 수 있는데, 본 연구에서는 강의 컨텐츠 저작툴인 강의 녹화기와 저작된 강의컨텐츠를 웹 상에서 시공간에 구애받지 않고 학습 할 수 있도록 하는 클라이언트로 구성된 WMT를 이용한 웩 기반의 비 실시간 원격강의 시스템을 설계 및 구현하였다.

• Proceedings of the Korean Institute of Intelligent Systems Conference
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• 2004.04a
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• pp.547-550
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• 2004

현대사회를 정보화 사회라고 한다. 교과서나 교사에 의해 독점되던 지식은 다양한 출판물과 전파매체를 통해서 무차별적으로 전달되고 있다. 20세기가 출판문화의 시대였다면 21세기는 전자, 전파 매체가 주도하는 정보의 시대인 것이다. 이러한 변화에 따라 교육 현장에서도 열린교육의 핵심인 개별화 교육이 강조되고 있으며 컴퓨터의 교육적 활용에 무한한 가능성을 인지하고, 이를 교수-학습에 적용하려는 시도가 끊임없이 전개되고 있다. 본 논문에서는 개별화 교육의 일환으로 교수-학습 현장에 컴퓨터와 웹을 접목한 대화형 교육방송 시스템 설계와 구현에 관하여 연구하고자 한다. U 기술을 이용하여 수업교재를 제작하고, 이를 기반으로 서버를 구축하여 원격지에서 다양한 학습자들이 시간과 장소에 구애받지 않고 학습할 수 있는 대화형 교육방송 시스템에 관하여 연구하였다.

• The KIPS Transactions:PartD
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• v.9D no.3
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• pp.495-500
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• 2002

The DRM system has a clearinghouse module which is in the Important position in content delivery mechanism. Currently, the most of DRM systems in the market does not support compatibility functions with other DRM systems. The shopping malls must consider the multiple clearinghouses services if they have many contents using diverse DRMs. In this paper, we are modelling a clearinghouse module which can support several DRM systems. As a first step, this model supports Microsoft WMT Adobe ACS, and our own DRM system.

• Proceedings of the Korea Database Society Conference
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• 2001.11a
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• pp.428-434
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• 2001

전통적인 수작업을 통한 서비스 Update 수행 개선 필요. WMT 하의 Multimedia Streaming File 보안 필요. 기본 Web Page 및 HTML 하의 Player Skin의 통합 필요. 인터넷 재방(VOD/AOD)서비스에 대한 신속한 Update 구현 (중략)

• Journal of the Korean Society of Environmental Restoration Technology
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• v.25 no.1
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• pp.57-74
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• 2022

Seed zones were constructed using temperature and precipitation data for the Korean Peninsula and were described as 65 zones. Seed zones for South Korea were reclassified, and they were classified into 34 districts. This study was conducted to define the spread of 5 native seed species (Pinus densiflora, Quercus acutissima, Quercus variabilis, Acer pictum, Carpinus tschonoskii) by linking the seed zones with MaxEnt. The emergence point of native seeds was acquired through the 1:5,000 Forest Type Map and the 4th national natural environment survey data. Based on the MaxEnt result, regions with a habitat probability of 0.5 or more were extracted and overlapped with seed zones to identify the native seed habitat. After analyzing the climate regions with high habitat density, regions with high habitat density of native seeds for each administrative district were identified. In the case of Pinus densiflora, Quercus acutissima, and Quercus variabilis, the Winter minimum temperature(WMT) -9.4~-6.6℃, Annual Heat:Moisture(AH:M) 19~24℃/m was 37%, 43%, and 34%, respectively. occupied the largest area. In Acer pictum, WMT -6.6~-3.8℃ and AH:M 16~19℃/m accounted for 42% of the area, and Carpinus tschonoskii had WMT -3.8~-1.1℃, AH:M <16℃/m Districts accounted for the largest area at 33%. The regions with high density of Pinus densiflora, Quercus acutissima, and Quercus variabilis by administrative district were distributed in high density in Seoul, Southern Gyeonggi-do, Chungcheong-do, and Gyeongsangbuk-do. Acer pictum was distributed in high density in Jeolla-do and Gyeongsang-do, and Carpinus tschonoskii in Jeju, Jeollanam-do and Gyeongsangnam-do. Through this study, seed zones for each of the 5 native seeds were established, and it is expected to provide basic data for the management of native seeds.