Slashdot

MetaPhyzx writes "According to an article put forth by the Toward Freedom website, the metallic ore known as columbite-tantalite or coltan for short is fueling conflict in central Africa. The relevance to us who read news for geeks: Coltan is in quite a few consumer electronics; the article references the Sony Playstation series." As reader fahrvergnugen points out in the comments below, there's reason to more than doubt the currency of the claims in the above-linked article, as outlined in a post at Joystiq.

1) Find their personal website
2) DDOS
3) Revel in your victory

Roland Piquepaille writes "Dutch engineers have built the third generation of the DelFly autonomous air vehicle. The DelFly Micro made its first public flight earlier today in Delft. This micro air vehicle weighs only 3 grams and has a wingspan of 10 centimeters. This very small remote-controlled aircraft carries a 0.4 gram camera. The DelFly Micro, which looks like a dragonfly, can fly for 3 minutes at a maximum speed of 5 meters/second. It could be used for observation flights in difficult-to-reach or dangerous areas."

MikeURL writes "I searched the archives and it has been a while since there has been a "build vs. buy" discussion. The last time I was in the PC market it was not even up for debate because buying was clearly the way to go. Now that I'm back in the market I find that the situation is less clear. I can spec out a PC that would make me really happy at sites like mwave and then I look at the total+tax+shipping and compare it to what I can go pick up at BestBuy.

To my surprise the gap has narrowed quite a bit. The big box retailers still seem to give a little more system for the price (especially for "bundles") but the build option is remarkably close AND I get the exact parts that I want. What say you slashdot? Build or buy?"

TechDirt has an insightful article on the recent push for ISPs to turn off Usenet access under the guise of fighting child pornography. Unfortunately, the "stand against child porn" isn't actually a stand at all, it seems — more like ignoring the issue while trying to snag some headlines and good will. "Taking a stand against child porn wouldn't be overly aggressively blocking access to internet destinations that may or may not have porn (and there's no review over the list to make sure that they're actually objectionable). Taking a stand against child porn would be hunting down those responsible for the child porn and making sure that they're dealt with appropriately... Also, this sets an awful precedent in that the ISPs can point out that it's ok for them to block "objectionable" content where they get to define what's objectionable without any review."

jg21 writes "Ever since Fortune wrote an article about it, mentions have been occurring hither and yon about how Google is having problems retaining employees, and the latest comes in Web 2.0 Journal, where Dare Obasanjo interestingly tracks and interprets a couple of blog entries that he says leads him to hypothesize that "Google's big problem is that the company hasn't realized that it isn't a startup anymore." Of course Obasanjo works for Microsoft; it will be interesting to see if an equally prominent Googler posts a counter-theory."

Roland Piquepaille writes "Northwestern University researchers have developed new transistors which are currently tested on the International Space Station (ISS) to see how they react to cosmic radiation. These transistors, which are using a new kind of gate dielectric material called a self-assembled nanodielectric (SAND), are exposed to radiation outside the ISS since March 22, 2008, and will stay there for one year. According to the researchers, these new transistors could be used 'on long space missions since early experiments on Earth indicate that the transistors hold up well when exposed to radiation.'"

Roland Piquepaille writes "In recent years, we have become increasingly dependent on applications using the Global Positioning System, such as railway control, highway traffic management, emergency response, and commercial aviation. But the American Geophysical Union warns us that we can't always trust our GPS gadgets because 'electrical activity in the... ionosphere can tamper with signals from GPS satellites.' However, new research studies are under way and 'may lead to regional predictions of reduced GPS reliability and accuracy.'" Roland's blog has useful links and a summary of a free introduction, up at the AGU site, to a special edition of the journal Space Weather with seven articles (not free) regarding ionospheric effects on GPS.

esocid writes "The sun has been laying low for the past couple of years, producing no sunspots and giving a break to satellites. Periods of inactivity are normal for the sun, but this period has gone on longer than usual. The sun usually operates on an 11-year cycle with maximum activity occurring in the middle of the cycle. The last cycle reached its peak in 2001 and is believed to be just ending now, with the next cycle just beginning and expected to reach its peak sometime around 2012. Today's sun, however, is as inactive as it was two years ago, and scientists aren't sure why. In the past, solar physicists observed that the sun once went 50 years without producing sunspots, coinciding with a little ice age on Earth that lasted from 1650 to 1700." (More below.)

Roland Piquepaille writes "According to a Michigan State University (MSU) news release, 'Made-to-order isotopes hold promise on science's frontier,' nuclear physicists can now start a new career as isotope designers. These scientists can build specific rare isotopes to solve scientific problems and open doors to new technologies. The lead researcher says this approach has already given us the Positron Emission Tomography (PET) scan technology. He's now going further, saying that he wants to build objects 100,000 times smaller than the atomic nucleus. He calls this 'femtotechnology.' Also available are additional details and pictures of the tools used for this kind of research, picked from a 415-page design paper." Update: 05/11 14:30 GMT by SS: Readers have noted that the summary inaccurately portrays the scale of the 'femtotechnology.' The MSU researcher refers to "the capacity to construct objects on an even more minute scale, that of the atomic nucleus 100,000 times smaller."

Roland Piquepaille writes "As you can guess, hardwired computer systems are much faster than general-purpose ones because they are designed to do a single task. But when they fail, they need to be totally reconfigured. This can be just a costly problem in a lab on Earth, but it can be vital in space. This is why a University of Arizona (UA) team is working with NASA to design self-healing computer systems for spacecraft. The UA engineers are working on hybrid hardware/software systems using Field Programmable Gate Arrays (FPGAs) to develop these reconfigurable processing systems. As the lead researcher said, 'Our objective is to go beyond predicting a fault to using a self-healing system to fix the predicted fault before it occurs.'"

Nothing to Declare notes that a California appeals court has unanimously upheld a ruling that border security officers at international airports can search personal computers without requiring any specific evidence of criminal activity. The appeal was made by US resident Michael Timothy Arnold, charged with child pornography offenses after an airport search of his notebook PC in 2005. Might want to think hard about what's on your laptop if you're going to be passing through a US international airport.

Roland Piquepaille writes "UK researchers have recently used virtual reality to check if people had paranoid thoughts when using public transportation. Their VR tube ride experiment revealed that 40% of the participants experienced exaggerated fears about threats from others. Until now, researchers were relying on somewhat unreliable questionnaires to study paranoid thoughts which are often triggered by ambiguous events such as someone laughing behind their back. With the use of VR, psychiatrists and psychologists have a new tool which can reliably recreate social interactions. As the lead researcher said, VR 'is a uniquely powerful method to detect those liable to misinterpret other people.'."

Wired's Threat Level blog is reporting on an analysis of the cost of electronic voting compared to traditional methods of vote tallying. A group named SaveOurVotes examined Maryland's budget allocations for elections during their switch from optical scanners to touch screens, and found that contrary to official claims, the cost was higher for e-voting (PDF) — much higher. "Prior to purchasing the touch-screen machines, about 19 of Maryland's 24 voting districts used optical-scan machines. SaveOurVotes examined those counties and compared the cost of the optical-scan equipment they previously used to the touch-screen machines they were forced to buy. The cost for most counties in this category increased 179 percent per voter on average. In at least one county, the cost increased 866 percent per voter — from a total cost of about $22,000 in 2001 to $266,000 in 2007."

Roland Piquepaille writes "According to Haaretz, an Israeli team of computer scientists has developed software that ranks facial attractiveness of women. Instead of identifying basic facial characteristics, this software has been designed to make aesthetic judgments — after training. The lead researcher said this program 'constitutes a substantial advance in the development of artificial intelligence.' It is interesting to note that the researchers focused on women only. Apparently, men' faces are more difficult to grade."