Quantitative Investigation of Internet Infrastructure Suitable for Elementary and Secondary Schools.
适合中小学的互联网基础设施量化调查。
基本信息
- 批准号:16500577
- 负责人:
- 金额:$ 2.3万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (C)
- 财政年份:2004
- 资助国家:日本
- 起止时间:2004 至 2005
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
In this research, a response time in a computer classroom to get information from Web servers was quantitatively investigated. At first, it was found by experiments that learners' access distribution to the Internet could be approximated by gamma distribution. Second, data sizes of Web pages that are useful for education were searched. The 344 Web sites were selected. The mean data size for an Web page was approximately 98KBytes, which was small enough for download. Third, an experimental network was set to measure a response time. A server's computer was connected with eight client computers under several bandwidth conditions (1.5Mbps,10Mbps, and 100Mbps). The numbers of TCP connections from clients to server computer were changed by 2,4,8,16,24,32,40,and 48. The connections were launched to form gamma distribution. The standard deviation of gamma distribution is set to be zero (simultaneous connections), 10 sec, and 20 sec. The transferred data size from the server to clients was changed. The mediums of measured response time were shown as contour maps. As a result, it can be said that an Internet connection of 1.5Mbps is enough for a computer classroom to use educational Web sites. However, in order to use large files as high-definition pictures, 10Mbps Internet connection, or ADSL class connection, is required.
在这项研究中,在计算机教室从Web服务器获取信息的响应时间进行了定量研究。首先,通过实验发现学习者对互联网的访问分布可以用伽玛分布来近似。其次,对教育有用的网页的数据大小进行了搜索。344个网站被选中。网页的平均数据大小约为98 KB,对于下载来说足够小。第三,设置实验网络来测量响应时间。一台服务器计算机在几种带宽条件下(1.5Mbps、10Mbps和100Mbps)与八台客户机连接。从客户端到服务器计算机的TCP连接数更改为2、4、8、16、24、32、40和48。连接被启动以形成伽马分布。Gamma分布的标准差设置为零(同时连接)、10秒和20秒。从服务器到客户端传输的数据大小已更改。反应时的测量介质以等值线图表示。因此,可以说1.5Mbps的互联网连接足以让计算机教室使用教育网站。但是,为了使用大文件作为高清晰度图片,需要10Mbps的互联网连接或ADSL类连接。
项目成果
期刊论文数量(13)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Development of an Information Retrieval System of Video-Based Learning Materials and a Method to Attach Timecode Information on Speech Data (Japanese Edition)
基于视频的学习材料信息检索系统的开发以及在语音数据上附加时间码信息的方法(日文版)
- DOI:
- 发表时间:2005
- 期刊:
- 影响因子:0
- 作者:Yousuke MORIMOTO;Masao MUROTA;Yasutaka SHIMIZU
- 通讯作者:Yasutaka SHIMIZU
Consideration about Environment of Distance Learning with DV Movies using Ojective Evaluation for Picture Quality
基于图像质量客观评价的DV电影远程教学环境思考
- DOI:
- 发表时间:2005
- 期刊:
- 影响因子:0
- 作者:Takashi FUJIKI;Masao MUROTA;Yasutaka SHIMIZU
- 通讯作者:Yasutaka SHIMIZU
An Information Retrieval System Using Time-Coded Speech Data of Video-Based Learning Materials in Japanese
使用日语视频学习材料的时间编码语音数据的信息检索系统
- DOI:
- 发表时间:2004
- 期刊:
- 影响因子:0
- 作者:Yousuke MORIMOTO;Masao MUROTA;Yasutaka SHIMIAU
- 通讯作者:Yasutaka SHIMIAU
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MUROTA Masao其他文献
MUROTA Masao的其他文献
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{{ truncateString('MUROTA Masao', 18)}}的其他基金
Development of presentation tool with high functionality utilizing a portable device in order to increase interactivities in a class
利用便携式设备开发具有高功能的演示工具,以增加课堂上的互动性
- 批准号:
24501130 - 财政年份:2012
- 资助金额:
$ 2.3万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Development and Evaluation of a Information System using the Internet to Support Satellite Education
利用互联网支持卫星教育的信息系统的开发与评估
- 批准号:
13558014 - 财政年份:2001
- 资助金额:
$ 2.3万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
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