Wednesday, September 30, 2009
Monday, September 28, 2009
Pan African Space Station
PASS. It's on orbit until October 12, 2009. Excellent programming from the folks of Long St., Cape Town.
Friday, September 25, 2009
AIDS and Statistics
Results from AIDS tests in Thailand have been making the rounds in the news. I am a bit baffled by the statistics. Apparently 16,000 people from the general population were divided in two groups. Half were vaccinated while the other half received a placebo. They were then given condoms, taught how to prevent infection, and promised treatment in case the contracted the disease. The result that has been making the news is that 74 in the placebo got infected, while only 51 in the vaccinated group contracted the disease. Now, there is something that does not compute here. Couldn't we explain the difference simply by hypothesizing that 51 people in the vaccinated group had unprotected sex with partners with AIDS, while similarly 74 people in the placebo group had unprotected sex with AIDS carriers?. No need and no effect from the vaccine?. The only workaround is that they actually went out and proved that majority in both samples had unprotected sex with AIDS carriers. Otherwise, these results are bogus. I am not really sure how the results were computed. Am I missing something?. Anyone?.
Tuesday, September 22, 2009
Goodbye and Good Luck
One of the postdocs in our group Debanjan Bose has started his move to Brussels, Belgium to work on the Icecube experiment. We wish him well.
Thursday, September 17, 2009
Africa: A Musical Journey (4) - Madagascar
We finally move out of South Africa and onto Madagascar's Tarika.
Tuesday, September 15, 2009
Africa: A Musical Journey (3) - Swaziland
Swazi producers Simza & Sabside via South African DJ Cndo.
Friday, September 11, 2009
Thursday, September 10, 2009
HST is back in business
After a long forced vacation, the new Hubble Space Telescope instruments have passed the calibration phase and operations are to resume. A new set of pretty pictures accompany the story.
Wednesday, September 9, 2009
Africa: A Musical Journey (1) - South Africa
I´ll be posting music from each country in Africa. From Soweto, South Africa this is BLK JKS.
Tuesday, September 8, 2009
Fermi photons
Fermi has released photon data. You can get everything here. Still waiting for the first-year catalog.
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