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TED: About SOPA/PIPA

January 18, 2012 in TED

Today is a day of american and worldwide online protest against SOPA/PIPA. Several huge sites have marked the day by blackout or other means, including Wikipedia, Google, WordPress and many others.

What’s so bad about it? It is a bill that is only on the agenda because of lobbying from the industry. Most supporters of the bill are themselves supported by the very same industry. (claims taken from the video below) Corruption? No, American politics – it’s unfortunately how the system works. And they can tolerate a certain part of that as long as the bills are sensible. This bill however is simply put a bill that allows the American industry to censor the Internet without really involving the legal system. Censorship does not belong in the free world, nor does the principle guilty until proven innocent. But that is what a desperate billion dollar industry is trying to employ.

If you want to learn more about this check out Wikipedia’s FAQ and do a google search. Unless you’re an american citizen there is not much active action you can take other than staying informed. This TED-video featuring Clay Shirky posted today better explains why we should all care, not just americans. He also points out how this is not a single incident, but rather just another step in a process that has been going on for quite some time. And there is no reason to believe that they will give up any time soon.



TED: on MRI-guided focused ultrasound (FUS)

January 15, 2012 in Science

First of all, this seems like a very interesting field of science! The basic principle involves using an array of ultrasound transducers to focus the ultrasound to a point and thereby maximize the energy in this point. This leads to an increase in temperature which can be used to destroy (or rather ablate) something without exposing it (i.e. cutting into the human body). All without exposing the patient to any ionizing radiation.

I tried to dig up some recent articles on the matter actually discussing the technology involved, but didn’t find too much at first glance. Will look more and update if I find something interesting. I found two books that seemed relevant at first, but then fell through: MRI-guided Focused Ultrasound Surgery (seems to be for practitioners and not about the actual technology involved) and a compendium which seems to be just an aggregation of Wikipedia articles.

Anyway, check out the video – Yaov Medan presents some amazing successful cases.