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27 Aug 09

什么是创新之母？ - FT中文网 - FTChinese.com

  • 什么是创新之母？
  • 证据表明，琼斯有理由感到担忧。远离个体发明的趋势并未中断——琼斯的记录始自1975年，自那时起，专利引文中所列团队的规模一直在稳步扩大。发明家创造首项专利的年龄也在增长，专业化程度似乎有所加剧。孤军奋战的发明家已不太可能在不同技术领域创造多项专利。“更为深奥”的知识领域——这些领域的专利会引用许多其它专利——吸引了更大规模的研究团队。如果把一项现代专利与一项上世纪70年代的专利相比较，你会发现前者背后的团队规模更大，其中遍是更年长、也更专业化的研究人员。
02 May 09

Gallery - Exploring the exploding internet - Image 8 - New Scientist

Image 8 of 9
Internet traffic in 2008 (enlarge)

China has now overtaken the US with the largest number of internet users. However, this still represents less than a quarter of the country's population.

www.newscientist.com/...8 - Preview

internet statistics

05 Aug 08

Order statistic - Wikipedia, the free encyclopedia

When monthes ago I was wanting to get understand of the distribution of the nth largest varible in a random sequence, I had never heard of order statistics so I failed to find a analytic answer to the problems of multi-user diversity gain and Best-M feedback.

Now I have this great tool, Order Statistics.

en.wikipedia.org/...Order_statistic - Preview

math statistics

  • the nth order statistic (or largest order statistic) is the maximum
  • Distribution of each order statistic of an absolutely continuous distribution
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