Tuesday, 29 April 2008
Taekwondo
Friday, 25 April 2008
Semestr vrcholí
Ve středu jsem šel na seminář o hypoteční krizi v USA a lekcích, které si z ní může Korea a jiné státy vzít. Myslím, že už jsem zmiňoval že KDI school MBA program Finance & banking je opravdu dobrý, asi nejlepší v Koreji, a tak i kvalita semináře byla výtečná. Prof. Cho pracoval pro Fannie Mae a mimo jiné také napsal, pro federální vládu, studii o historii poskytování hypoték v USA, takže věděl o čem mluví, a zajímavě zasadil sekuritizaci hypoték do rámce vývoje a předchozích krizí amerického hypotečního trhu.
Příští týden mě čeká ještě pár (doslova) zkoušek, a pak už hurá domů na zasloužené dva týdny prázdnin.
Tuesday, 22 April 2008
Animace od Free Range Studios
The story of stuff
a
The Meatrix
Friday, 18 April 2008
Hory
Tuesday, 15 April 2008
Guinness a statistika
Z Wiki:
The t statistic was introduced by William Sealy Gosset for cheaply monitoring the quality of beer brews ("Student" was his pen name)[1]. Gosset was a statistician for the Guinness brewery in Dublin, Ireland, and was hired due to Claude Guinness's innovative policy of recruiting the best graduates from Oxford and Cambridge to apply biochemistry and statistics to Guinness' industrial processes. Gosset published the t test in Biometrika in 1908, but was forced to use a pen name by his employer who regarded the fact that they were using statistics as a trade secret. In fact, Gosset's identity was unknown not only to fellow statisticians but to his employer — the company insisted on the pseudonym so that it could turn a blind eye to the breach of its rules.
Guinness was a progressive agro-chemical business and Gosset would apply his statistical knowledge both in the brewery and on the farm—to the selection of the best yielding varieties of barley. Gosset acquired that knowledge by study, trial and error and by spending two terms in 1906–7 in the biometric laboratory of Karl Pearson. Gosset and Pearson had a good relationship and Pearson helped Gosset with the mathematics of his papers. Pearson helped with the 1908 papers but he had little appreciation of their importance. The papers addressed the brewer's concern with small samples, while the biometrician typically had hundreds of observations and saw no urgency in developing small-sample methods.
Another researcher at Guinness had previously published a paper containing trade secrets of the Guinness brewery. To prevent further disclosure of confidential information, Guinness prohibited its employees from publishing any papers regardless of the contained information. This meant that Gosset was unable to publish his works under his own name. He therefore used the pseudonym Student for his publications to avoid their detection by his employer. Thus his most famous achievement is now referred to as Student's t-distribution, which might otherwise have been Gosset's t-distribution.
The blue house
Foto z návštěvy prezidentské rezidence tzv. Modrého domu. Původně to byla vila japonského governor-general, a před pár měsíci se tam usídlil Lee Myongbak. Uprostřed (fialová blůza) učitelka korejštiny Cho, okolo nadšení studenti korejského jazyka. Úplně vlelo je David z Etiopie, a vedle něj Irwan z Indonésie, který žil jako dítě v ČSSR. Nejvíc mu utkvělo v paměti, jako ho hodní čeští lidé vytáhli z rybníka, ve kterém by se jinak utopil.