June 17, 2010
To blame or not to blame, that is the question. Politics and science sometimes just don’t mix, and now we have another example right out of the real life. You think politicians are sane or educated enough to cope with science? You think they actually understand what science is about? You better think twice. This is insane:
News out of Italy suggests that seven researchers who did not predict the L’Aquila earthquake in April 2009 are under formal investigation and may be charged with gross negligent manslaughter.
I wonder if they will charge Berlusconi for aiding and abetting because he cut funds for basic research.
Next on: Politicians sueing meterologists for Kathrina. Politicians sueing vulcanologists for Mt. St. Helens. Politicians sueing petrologists for the BP oil spill. Errrr… Right.
Film at 10.
June 15, 2010
Out there at Technology Review I found this article about an “AI” (you may raise your eyebrows here) which is supposed to better in stock-market speculations than actual humans. For a brief introduction let me quote TR:
It’s called the Arizona Financial Text system, or AZFinText, and it works by ingesting large quantities of financial news stories (in initial tests, from Yahoo Finance) along with minute-by-minute stock price data, and then using the former to figure out how to predict the latter. Then it buys, or shorts, every stock it believes will move more than 1% of its current price in the next 20 minutes – and it never holds a stock for longer.
TR points out, that analyses similar to the described algorithm exists since the 90ies. However, the new systems doesn’t actually parse all the data, but concentrates on some keywords which seem to be of relevance.
I see two very odd flaws there.
- A good AI predicting the stock-market based on human-written text – which could be technically used by *anyone* who could afford it – would lead to a situation where stocks keep heating up. Speculation will grow rapidly and positive feedback loops will possibly run into an overdrive situation. I wouldn’t opt in for a ban on such a software but on full disclosure if this software was used on a certain bid. This could help in debugging situations and to give legislators something to think off when the shit already hit the fan.
- If the algorithm actually concentrates on keywords in context rather than in the whole analysis of the text, I bet a fiver that it wouldn’t even take a few weeks until some clever consulting company analyzed the algorithm and makes up a process how to tweak your fiscal reports so that AZFinText favours this text. Think of the stock-market equivalent of a Google bomb.
Nobody in Technology Review’s forum seems to be worried about the real-life implications… I think I’m just pointing out the obvious and that the stock-market professionals already made up their own ideas.
May 13, 2010
The VSCSE, the Virtual School of Computational Science and Engineering, is once again offering courses. For this time, they added quite a lot of new sites, where you can attend the courses – 21 sites in all over the US are now available as classrooms. The VSCSE is provided and funded by the Great Lakes Consortium for Petascale Computation (GLCPC), the National Science Foundation (NSF), the State of Illinois, the Committee on Institutional Cooperation (CIC), and Internet2 Commons.
Want to learn how to use graphics processors for scientific computing? Scale your parallel code to tens of thousands of CPU cores? Deal with ginormous datasets? The Virtual School of Computational Science and Engineering offers these courses and more during its summer program for 2010!
Since 2008, nearly 250 students and researchers have participated in the annual Summer School offered by the Virtual School. During Summer School, students learn new techniques for applying high-performance computing systems to their work. Due to overwhelming demand for courses in previous Summer Schools, we have added 15 sites (for a total of 21 sites) to the 2010 program in order to accommodate additional students. For each course, students attend on-site in one of 10 state-of-the-art, distributed high-definition (HD) classrooms, located at academic and research institutions across the country. These HD classrooms are equipped with live, high-definition videoconferencing technology that provides a high-quality learning experience.
Students attend technical sessions presented by leading researchers in computational science and engineering and use cutting edge, high-performance computing systems provided by TeraGrid resource providers. Course participants apply the techniques learned in hands-on lab sessions, assisted by skilled teaching assistants who work one-on-one and in small groups to answer questions and solve problems posed during the sessions. This summer’s courses are:
The cost for each course is only $100. To participate, prospective students must first be enrolled in the Virtual School. Enrollment is free and can be completed at https://hub.vscse.org/. After enrolling, students select their courses and indicate which of the distributed HD classrooms they would like to attend.
Snacks and an evening reception will be provided; participants are responsible for travel and lodging costs (low-cost dorm accommodations will be provided where possible). Because of the large geographic diversity of participating sites, it is likely that little travel will be required.
For no additional cost, on-site participants can take online short courses on MPI, OpenMP, and CUDA that are designed to help them meet course prerequisites.
For more information on the 2010 courses, including the sites participating in each course and details on enrollment, go to: www.vscse.org/summerschool/2010
October 31, 2008
Click image for high-resolution!
Image (C) by userfriendly.org. Stolen without permission. :)
I bet the Tevatron is a partner of Denon… ;-)
October 23, 2008
Since Tomaso likes to play around with his personal dosimeter on airplanes, I’d like to propose him a new 50 keV X-Ray experiment for his toy.
Everyone knows that peeling of scotch tape under her or his blanket emits some light. But did you also know that you can’t only use it as holographic memory but also let it send off X-Rays in vacuum? I found this article on Hack A Day today and also this really cool video up on Nature’s website.
So, vacuum-chamber anyone? Thinking of Ponder Stibbons‘ proposal to create a lot of electricity by mounting a lot of cats to wheel and let an amber-rod stroke their fur, I could think of an easier way to produce lots of X-Rays than the method DESY is using ;-)
 Obviously a Discworld reference.
March 6, 2008
Now for something completely different: A friend of mine, head-artist of our really great WW2-submarine simulation “Danger from the Deep“, rendered this classic standard Stanford-Buddha with his own procedural shaders powered by Shrimp (which means: No textures!). It’s just so gorgeous, I had to share it with his kind permission.
Fig 1: Stanford standard Buddha, original mesh by Stanford University, cleaned, decimated, converted to RiSubd with K-3D by rconstruct (click for 1024×1024 PNG)
Ain’t that nice?
Check out Shrimp, an interactive Renderman shader creator.
P.S.: Whoring++ – all those creationists are tagging their postings with “science” – so I’m going to tag that posting with “science” (it’s CS) and “religion” (it’s a Buddha!) as well.
July 4, 2007
A couple of friends and me were quite in a jolly mood so we came up with this idea:
Travelling near light speed is bad for humans. The electrons of the atoms which make up the human body gain a lot of energy – but eventually, when you reach your destination, you need to pull the brake. Where should all the excess energy go which the electrons piled up? Bloody Bremsstrahlung which’ll harm the body :)
Next time I need to do some calculations how much radition you’d pile up at certain speeds relative to.
Stay tuned for more drunken theories.
Tell me about your concerns!
1) Tonnie pointed out that he’d be more concerned about debris in space on your path. I agree with him, although that’s a lame excuse not going to space :)