My Kung Fu Daughter

November 27th, 2010 by ET

Took when she was 1 week old.

[youtube]http://www.youtube.com/watch?v=t06PeqoZHH0[/youtube]



高危了

November 20th, 2010 by ET

以下轉載自 新浪中醫頻道:
==========================
如今不孕不育在我國已經成為「通病」。 近五年來,中國每年都有上百萬對的夫妻因不孕不育而去醫院就診。

現今六大行業,由此被列為「不育行業」。分別為

從事教師職業的男性比普通男性不育的機率高出7倍
從事金融分析的男性不育機率是普通男性的5倍
IT行業男士不育機率是普通男性的3倍
從事工程技術不育機率是普通男性的3倍
經常接觸化工制劑和產品的男性朋友容易不育
久坐開車的司機朋友們警惕不育
===========================

對照了一下,俺除了最後兩條,上面的都完全符合,一句話概況:

俺是用金融分析的手段研究IT行業工程技術的教師

機率相乘是普通男性的315倍



Clock Tower

November 18th, 2010 by ET



蘭亭序

November 9th, 2010 by ET



City Hall

October 15th, 2010 by ET



Typhoon is coming

September 20th, 2010 by ET



Tsinghua Gate

September 18th, 2010 by ET



Productivity

August 27th, 2010 by ET

I came across a senior professor in Statistics in the hall way. He noticed that I moved my office.

I told him that the new office has a window, and my research productivity increased by 5 times.

He then said:”Wonderful, they should have installed 2 windows for you.”

Hilarious!



German Publicity

August 26th, 2010 by ET

This blog recently saw a big surge in the number of visitors from Germany. With a little tracing, I found the following website: http://www.handelsblatt.com/politik/wissenswert/studie-wie-wikipedia-markttheorien-widerlegt;2640653;0

The website is called “Handelsblatt Economy Newsletter” that reports “New trends in economics and business administration”.

It’s purely in German and the article specifically talks about the forthcoming AER paper Feng and I wrote about Wikipedia.

I used Google to translate the article, and it looks quite nice to me.

========Translated Article Below=========

LONDON. What a mistake. In the summer of 2002 reported the “Berliner Zeitung” as one of the first German media over the Internet Wikipedia – fascinated, but also skeptical: “But like the reservoir of knowledge also have large audiences and continually grow: In the near future it will not succeed, well, works of reference such as the Brockhaus outdo. “No six years later, told the Brockhaus publishing the end for the printed dictionary with – and Wikipedia now one of the most frequently visited Internet sites worldwide. Tens of thousands are working for free, voluntarily and without any fee.

A success story that brings economists provide explanations. Their traditional theories suggest that it would not even have the rise of the Internet lexicon may be. Why should rational individuals make the effort to write encyclopedia articles free of charge for an anonymous audience? Any Internet user can use the Online Encyclopedia, without himself contributes articles.

Thus, Wikipedia is what economists call a “public good” – an offer that will benefit all the people and by the use of which no one can be excluded. Classic examples of this are dikes and street lights. For public goods, so budding economists learn in basic, there is a big dilemma: There are strong incentives to freeloaders – to seize the offer without providing anything in return. The traditional economics postulates: the greater the number of potential beneficiaries, the more problems arise with free riders.

At least with Wikipedia is exactly the opposite is the case, shows a new study that appears in the upcoming “American Economic Review: The greater the number of potential readers, the more people are willing to devote their working hours for the online encyclopedia – probably because they draw mental satisfaction from the fact that their text be read by many others.

The scientists Xiaoquan Zhang (Hong Kong University of Science and Technology) and Feng Zhu (University of Southern California) have this effect after the example of the Chinese Wikipedia page. They use the fact that the government in Beijing has repeatedly censored the site due to politically unwelcome information. From October 2005, for example, were Internet users in China, the Wikipedia page does not call for nearly a year. By blocking the target audience of Wikipedia has reduced drastically over night. Million Internet users were suddenly excluded. For Chinese people in Taiwan, Hong Kong and the rest of the world, the page remained available, however.

What impact that had on the activities on the website? The researchers focused on the behavior of users outside the People’s Republic of China – people who, despite barring further access to the site and could change them. Zhang and Zhu use the fact that all changes are recorded in detail in texts on the Wikipedia page, and conceivably relate to the country in which the authors live. They compared the activities in Wikipedia immediately before and after the lock. They noted: With the start of the blockade itself have Chinese-language Internet users outside the People’s Republic of considerably less interest in Wikipedia – suddenly they wrote fewer new contributions and extended existing texts much rarer.

“The participation of authors is not blocked by the blockade decreased on average by 42.8 percent,” the economists note. The reason: The level of cooperation in Wikipedia procure satisfaction of the individual authors – researchers are referring to “social benefit”. “The shrinking group size reduces this benefit,” they write.

One indication of this is precisely the authors, where the social aspect of Wikipedia was very important and intensively romped in the discussion boards of the lexicon, wrote at the beginning of the barrier significantly less. “Our study provides empirical evidence that social effects may be stronger than the tendency to freeloaders,” the bottom line.

The study shows once again: economists make a mistake when they explain to the people to pure egoists – they can not explain many phenomena of real life properly.



Fixing CrossOver in Snow Leopard 10.6

August 18th, 2010 by ET

An update of the system broke my almost-perfect installation of Bakoma Tex in Mac OS X 10.6 through Crossover.

It took me a few months to suffer from this tragedy. Each time when I need to work with LaTeX, I need to load my Windows 7 from bootcamp. I tried to reset the Java Virtual Machine and so on, but it could not fix the problem.

Then today I thought about the error message it gave when I tried to open CrossOver. It says “can’t load ‘/system/library/perl/extras/5.10.0…”, so it strikes me that maybe it is Perl that needs fixing.

I went to /usr/bin to list perl versions:
/usr/bin$ ls -l perl*
lrwxr-xr-x 1 root wheel 9 Aug 18 10:50 perl -> perl5.10.0
-rwxr-xr-x 1 root wheel 86000 Jun 24 2009 perl.old
-rwxr-xr-x 1 root wheel 51200 Jun 24 2009 perl5.10.0
-rwxr-xr-x 1 root wheel 34816 Jun 24 2009 perl5.8.9
-rw-rw-rw- 34 root wheel 807 Jun 24 2009 perlbug
-rwxr-xr-x 1 root wheel 38307 Jun 24 2009 perlbug5.10.0
-rwxr-xr-x 1 root wheel 45068 Jun 24 2009 perlbug5.8.9
-rw-rw-rw- 34 root wheel 807 Jun 24 2009 perlcc
-rwxr-xr-x 1 root wheel 17983 Jun 24 2009 perlcc5.8.9
-rw-rw-rw- 34 root wheel 807 Jun 24 2009 perldoc
-rwxr-xr-x 1 root wheel 255 Jun 24 2009 perldoc5.10.0
-rwxr-xr-x 1 root wheel 254 Jun 24 2009 perldoc5.8.9
-rw-rw-rw- 34 root wheel 807 Jun 24 2009 perlivp
-rwxr-xr-x 1 root wheel 12309 Jun 24 2009 perlivp5.10.0
-rwxr-xr-x 1 root wheel 12304 Jun 24 2009 perlivp5.8.9
-rw-rw-rw- 34 root wheel 807 Jun 24 2009 perlthanks
-rwxr-xr-x 1 root wheel 45068 Jun 24 2009 perlthanks5.8.9

Perl 5.10.0 is a 64 bit version. So I downgraded the perl to perl 5.8.9 by the following commands:

sudo rm perl
sudo ln -s perl5.8.9 perl

Then it worked like a charm.


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