权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Study of improvement of educational exchange support using international satellite network

利用国际卫星网络改善教育交流支持的研究

基本信息

批准号：
14580250
负责人：
KONDO Kimio
金额：
$ 2.18万
依托单位：
National Institute of Multimedia Education
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2002
资助国家：
日本
起止时间：
2002 至 2004
项目状态：
已结题

项目摘要

Improvement smoothly managing the present system is necessary for supporting international exchange in various fields of education such as language learning, science and technology and culture. The architecture is also required from the practical view. This research aimed to construct an international network of the next generation for higher education by providing infrastructure of international exchange in education for Japanese universities that have the inter-university satellite network "Space Collaboration System(SCS)" in cooperation with the international satellite network belonged to the Ministry of Internal Affairs and Communications. To achieve this aim, we conducted the following research : (1)experiment of international exchange and development of the tool, (2)Simulation of architecture for data transmission network.(1)Experiment of international exchange and development of the toolWe made experiments of international connection using plural satellites between the King Monk … More ut Institute of Technology Ladkrabang in Thailand and Japanese universities. The King Monkut Institute of Technology Ladkrabang has an earth station for satellite communications, which was provided by the international exchange program of the Ministry of Internal Affairs and Communications. We targeted the experiment to the investigation on systematic limitation and institutional problem on the coordinate in the practical use for international exchange. In the experiment, the communications between Thai and Japanese was done as a test-bed lecture. We developed and implemented a support system that translates the words included in the video into foreign languages, so that the students could communicate each other smoothly. As a result, we confirmed availability of the support tool, and suggested possibility that the support tool could be used for improvement of learners' understanding.(2)Simulation of architecture for data transmission networkWe made numerical simulation for performance of asymmetric satellite network targeting the SCS in order to study on framework of computer network using satellite communications. Network structure for reliable multicast communications was evaluated and performance of plural transmitters and receivers in the same session was analyzed with a number of feedback circuits as a parameter. As a result, possibility was suggested that the throughput was improved by actively controlling transmitters' bandwidths and the number of feedback circuits. Less

为了支持语言学习、科学技术和文化等各个教育领域的国际交流，有必要改善对现行制度的顺利管理。从实用的角度来看，也需要架构。这项研究的目的是通过为拥有大学间卫星网络“空间合作系统（SCS）”的日本大学提供国际教育交流的基础设施，与总务省所属的国际卫星网络合作，构建下一代高等教育的国际网络。为实现这一目标，我们进行了以下研究：（1）国际交换实验和工具的开发;（2）数据传输网络体系结构的仿真。（1）国际交流实验和工具开发我们在King Monk之间进行了使用多颗卫星的国际连接实验 ...更多信息 UT技术学院Ladkrabang在泰国和日本的大学。蒙库特国王技术学院有一个卫星通信地面站，由内政和通信部的国际交流方案提供。本实验旨在研究坐标在国际交流中的实际应用中存在的制度性缺陷和制度性问题。在实验中，泰国和日本之间的沟通是作为一个试验台讲座。我们开发并实施了一个支持系统，可以将视频中的单词翻译成外语，以便学生们能够顺利地相互交流。因此，我们确认了支持工具的可用性，并建议支持工具可以用于提高学习者的理解的可能性。（2）数据传输网络体系结构的仿真为了研究利用卫星通信的计算机网络体系结构，本文针对南海地区的非对称卫星网络进行了性能仿真。对可靠多播通信的网络结构进行了评估，并以反馈电路的数量为参数分析了同一会话中多个发送器和接收器的性能。因此，建议通过主动控制发射机的带宽和反馈电路的数量来提高吞吐量。少