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Archive for September 22nd, 2005

P2P, SIP and Security

September 22nd, 2005 No comments

For the past couple of days, Erik has posted discussions on SIP based P2P and security issues. These discussions are in audio format and are really interviews with Cullen Jennings, Rohan Mahy and Erik’s interview to Voxilla. The following is a quick summary and my thoughts. But it is different to summarize an audio portion compare to a written one; it is easier to go back to a written page; it is easier to search for a segment. This is to suggest that I might not have fully got the points made by the speakers. If you have not already heard these pieces, you may do well to give a listen. Erik and Cullen talk about an ad-hoc meeting of people interested in SIP based P2P system at the recent IETF meeting. It really looks like this meeting was a big “tent”; because it included people who are interested in this technology for different applications. For more, click P2P, SIP and Security.

Categories: -English-, P2P, Security, Telecom Tags: , , , , ,

Google versus Baidu

September 22nd, 2005 1 comment

刚才分别使用google.com 和baidu.com 的搜索引擎搜索我自己的名字, 从结果上看,google搜索结果在数量上相当于baidu结果的两倍。但是从内容上看,google的搜索智能性在此处就不如baidu的中文智能高 了, 其中有很多页面是不相关的,即明显不是姓名的组合,而baidu则似乎进行了预判,首先展现的都是符合姓名的网页,这一点上看应该是baidu在中文上 胜过了google。

另外,baidu.com还推出了一个有趣的新服务,即“贴吧”,你搜索一个姓名“张三”,即可以开一个新吧“张三吧”,或者已有内容,你可以过去留贴,很有趣。你试过自己的姓名了吗?

Categories: -English- Tags: , , ,

Security SNR (Signal Noise Ratio)

September 22nd, 2005 No comments

Security SNR

At the security information management area, the concept of SNR is often used to describe the performance of a SIM tool. But, what’s SNR? what impact the security SNR output? I hope this diagram help.

Categories: -English-, Security Tags: , , ,