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Technical Aids for Mirroring Sites and China Popular Science .ppt

1、Technical Aids for Mirroring Sites and China Popular Science Exhibition(CPSE),Chen Hui CNIC ,CAS (Computer Network Information Center , Chinese Academy of Sciences),Mirroring sites Current status of mirror sites of CPSE Rsync, the tool for mirroring sites How to set up mirror site Application of new

2、 technology to CPSE Flash Streaming video/audio VRML JSP Web site log files analysis,Mirroring sites,Current status of mirror sites of CPSE Rsync, the tool for mirroring sites How to set up the mirror site of China Popular Science Exhibition(CPSE),Current status of mirror sites of CPSE,Objective con

3、venient and fast access to CPSE have more people learn science knowledge Mirror Sites Taiwan, China, April 2000 Nanjing City, China, July 2000 Dalian City, China, September 2000 Platform Netscape WebServer+Sun Solaris Apache+Linux,Rsync, tool for mirroring sites,What is the Rsync Features of Rsync c

4、an update whole directory trees and file systems optionally preserves symbolic links, hard links, file ownership, permissions, devices and times requires no special privileges to install internal pipelining reduces latency for multiple files can use rsh, ssh or direct sockets as the transport suppor

5、ts anonymous rsync which is ideal for mirroring,How to use Rsync Using rsh,ssh as the transport Client/Server architecture set rsync server on remote machine running on TCP port 873 on the client machine,start rsync with command line Security consideration: C/S+SSH SSH(secure shell) maximum security

6、 and privacy on the Internet and local networks combine Rsync sever with SSH,Configure the Rsync running environment Installation and configuration of SSH Installation and configuration of Rsync Make the CD copy of CPSE and install it on the server in mirror site Transfer latest changes from the mai

7、n site in China to the mirror site,How to set up the mirror site of CPSE,Application of new technology to CPSE,Flash A new technology and tool to design and deliver low-bandwidth animations, presentations, and Web sites. Simple interactivity by scripting Applied Examples in CPSE Animation to show sc

8、ientific reasons Reasons for lakes Interactive game to test your knowledge How to escape from the earthquake spot,Application of new technology to CPSE,Streaming Video/Audioproduce a streaming video/audio file Shoot - capture edit compress/encode - distribute Two types of streaming Progressive strea

9、ming Download via http Require no special server High quality Suited for short video Real-Time streaming Require streaming server Real time play automatically via RTP/RTSP Quality decided by users connection speed Very suited for long video,Application of new technology to CPSE,Streaming Video/Audio

10、 Applied Examples CPSE Movies to show wild life,Application of new technology to CPSE,Virtual Reality Modeling Language(VRML) A modeling language based on ASCII Can be integrated with Java、Java applet and multimedia files Suited for internet Applied examples in CPSE Show you a 3D Model,Application o

11、f new technology to CPSE,Develop web-based application using JSP Whats JSP(Java server pages) Excellence Platform and server independence Java advantage Scalability in the Enterprise Examples in CPSE Forum,Web site log file analysis,Objective Learn the web access and improve our service Log analysis of mirror sites of CPSE Transfer everyday log files from the mirror sites to the main site in China. Analyze the log file of the mirror sites and transfer useful message to the main site in China,Thank you,

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