Want to read Slashdot from your mobile device? Point it at m.slashdot.org and keep reading!

 



Forgot your password?
typodupeerror
×

Submission + - Open Source Weapons Detection AI (iterate.ai)

davejenkins writes: We've developed an AI that uses computer vision to recognize guns, rifles, knives, robber masks and tactical vests. We want to help the community, so we've made an open-source version of this free (as in beer and speech) for schools and religious organizations. The code is on Github. We welcome deployments, refinements, and feedback!
Earth

Cloth Successfully Separates Oil From Gulf Water 327

Chinobi writes "Di Gao, an assistant professor at the Department of Chemical and Petroleum Engineering at the University of Pittsburgh, has developed a method of separating oil from water within just seconds using a cotton cloth coated in a chemical polymer that makes it both hydrophilic (it bonds with the hydrogen atoms in water) and oleophobic (oil-repelling), making it absolutely perfect for blocking oil and letting water pass through. Gao tested his filter successfully on Gulf Oil water and oil and has an impressive video to demonstrate the results." This is a laboratory demonstration; the technology hasn't been tested at scale.
Input Devices

Research Lets You Type Words By Thought Alone 114

An anonymous reader writes "How about typing on a computer just by thinking about it? The downside is you have to wear a skull cap with electrodes that capture your brain waves like an EEG machine. According to this EE Times story, a team of researchers from Belgium and the Netherlands has presented Mind Speller, a thought-to-text device intended to help people with movement disabilities. The system does rely on a lot of processing on a remote computer, but it is a wireless system. And these thought-to-computer systems have wider applicability than medical support. One of the research groups involved in this development has already looked at wireless electroencephalography (EEG) to enable measures of emotion to be fed back into computer games."
GNU is Not Unix

Oracle/Sun Enforces Pay-For-Security-Updates Plan 238

An anonymous reader writes "Recently, the Oracle/Sun conglomerate has denied public download access to all service packs for Solaris unless you have a support contract. Now, paying a premium for gold-class service is nothing new in the industry, but withholding critical security updates smacks of extortion. While this pay-for-play model may be de rigueur for enterprise database systems, it is certainly not the norm for OS manufactures. What may be more interesting is how Oracle/Sun is able to sidestep GNU licensing requirements since several of the Solaris cluster packs contain patches to GNU utilities and applications."
Power

Creating Electric Power From Light Using Gold Nanoparticles 77

cyberfringe writes "Professor of Materials Science Dawn Bonnell and colleagues at the University of Pennsylvania have discovered a way to turn optical radiation into electrical current that could lead to self-powering molecular circuits and efficient data storage. They create surface plasmons that ride the surface of gold nanoparticles on a glass substrate. Surface plasmons were found to increase the efficiency of current production by a factor of four to 20, and with many independent parameters to optimize, enhancement factors could reach into the thousands. 'If the efficiency of the system could be scaled up without any additional, unforeseen limitations, we could conceivably manufacture a 1A, 1V sample the diameter of a human hair and an inch long,' Prof. Bonnell explained. The academic paper was published in the current issue of ACS Nano. (Abstract available for free.) The significance? This may allow the creation of nano-sized circuits that can power themselves through sunlight (or another directed light source). Delivery of power to nanodevices is one of the big challenges in the field."

Comment Re:Finally? (Score 1, Insightful) 151

well-- the 10th amendment seems pretty clear: unless it's spelled out in the constitution, leave it to the states or the people. So, the real question is your own: Could you please explain to me where the feds get the right to do this? Which part of the constitution allows this?
Science

Making a Liquid Invisibility Cloak 93

Researchers at Fudan University in Shanghai, China are proposing a method which could lead to the first soft, tunable metamaterial, the key ingredient in building an invisibility device. "The fluid proposed by Ji-Ping Huang of Fudan University in Shanghai, China, and colleagues, contains magnetite balls 10 nanometers in diameter, coated with a 5-nanometer-thick layer of silver, possibly with polymer chains attached to keep them from clumping. In the absence of a magnetic field, such nanoparticles would simply float around in the water, but if a field were introduced, the particles would self-assemble into chains whose lengths depend on the strength of the field, and which can also attract one another to form thicker columns. The chains and columns would lie along the direction of the magnetic field. If they were oriented vertically in a pool of water, light striking the surface would refract negatively – bent in way that no natural material can manage."
Censorship

Flickr Yanks Image of Obama As Joker 869

An anonymous reader writes "An interesting article yesterday about the unmasking of the recent creator of the controversial and iconic Obama/Joker image that has been popping up around Los Angeles with the word Socialism under it. The Los Angeles Times has identified the images' creator as Firas Alkhateeb. Even more interesting though is the fact that after getting over 20,000 hits on the image at Flickr, Flickr removed the image from Alkateeb's photostream, citing 'copyright' concerns. The image in question is clearly both an independent derivative work and unquestionably a parody of the President and Time Magazine which would be covered under fair use. It has appeared on many other sites without issue on the Internet." According to the same reader, "Flickr also recently nuked a user's entire photostream over negative comments on President Obama's official photostream."

Comment Re:Caizen is actually spelt with a K (Score 1) 432

I was trying to make a joke about the 'splitting hairs' concerning the word 'spelling', not the actual spelling-- but it doesn't seem to have worked. I know how romaji is used. As to your other question concerning "why" Japanease substitute the 'c' for 'k', I have no idea, except to perhaps invoke some sort of unique branding or maybe "frenchiness" as you postulate. As I said, I notice this with bars and clothing shops mostly-- not "all". yoroshiku.

Slashdot Top Deals

A computer scientist is someone who fixes things that aren't broken.

Working...