Slashdot is powered by your submissions, so send in your scoop

 



Forgot your password?
typodupeerror
×

Submission + - Slashdot beta sucks 9

An anonymous reader writes: Maybe some of the slashdot team should start listening to its users, most of which hate the new user interface. Thanks for ruining something that wasn't broken.
Privacy

Why the Latest FISA Release By Google Et Al. Means Squat 131

Nerval's Lobster writes "Google, Yahoo, and other tech firms are offering some updated statistics about government requests for data. There's just one problem: under revised guidelines issued by the federal government, those companies can still only report a range, rather than a definitive number, for those requests. If that wasn't fuzzy enough, the range can only be reported after a six-month lag. Between January and June 2013, Google received between 0-999 FISA 'non-content' requests on 0-999 user accounts; it also fielded between 0-999 'content' requests for between 9000 and 9999 user accounts.Yahoo actually received a larger number of FISA queries than Google: for the first six months of 2013, the federal government made between 0-999 requests on between 30,000 and 30,999 user accounts hosted by the company. ... These companies have little choice but to advocate this new information release as a huge step forward for transparency. Unfortunately, restricting government data requests to a broad range isn't very helpful: for example, a range (rather than a single numerical value) makes it difficult to determine trends, such as whether government requests are gradually increasing over the long term."
Power

Should Nuclear and Renewable Energy Supporters Stop Fighting? 551

Lasrick writes "A debate is happening in the pages of the Bulletin of the Atomic Scientists that started with their publication of 'Nuclear vs. Renewables: Divided They Fall,' an article by Dawn Stover that chides nuclear energy advocates and advocates of renewable energy for bickering over the deck chairs while climate change sinks the ship, and while the fossil fuel industry reaps the rewards of the clean energy camp's refusal to work together. Many of the clean energy folks took umbrage at the description of nuclear power as 'clean energy,' so the Civil Society Institute has responded with a detailed look at exactly why they believe nuclear power will not be needed as the world transitions to clean energy."

Comment It's just 1200baud 7O1 Bell 202 (Score 5, Informative) 163

0x80 is just a null byte with odd parity. What she apparently missed is that this is bog-standard Bell 202 AFSK (1200 baud) with 7 data bits and odd parity, and the data is ASCII. By throwing away the top nybble, she was throwing away the parity bit and the top 3 bits of the ASCII encoding of decimal digits. The fact that it was a parity bit should've been pretty obvious, since the top nybble flips between 0x3x and 0xbx in the pattern that you'd expect for a parity bit.

You can decode it with off the shelf software, throw away the top bit, and get back mostly ASCII:

$ ./minimodem --rx 1200 -f ~/helicopter.wav | tr '\200-\377\r' '\000-\177\n'
### CARRIER 1200 @ 1200.0 Hz ###
  282 0002.3
#L N390374 W09432938YJ
#AL #NA 282 0002.3
#L N390374 W09432938YJ
#AL #NA 283 0002.3
#L N390372 W09432928YJ
#AL #NA 283 0002.3
#L N390370 W09432918YJ
#AL #NA 283 0002.3
#L N390370 W09432918YJ
#AL #NA 283 0002.3
[...]

I'm actually surprised that she missed / didn't mention this, considering her experience with signals analysis and demodulation. This is pretty much as basic as telemetry data modulation gets! Then again, as a reverse engineer myself, sometimes we get caught up doing deep analysis of something that later turns out to be totally trivial :)

Medicine

Animal Drug Investigation Reveals Pet Medication Often Doesn't Work 279

KentuckyFC writes: "Americans spent an estimated $14.2 billion on veterinary care for their pets in 2013 — and that doesn't even include proprietary health diets and food supplements. Put another way, pet owners pay about $850 annually in veterinary expenses per dog, and about $575 per cat. Factor in the emotional energy we invest in keeping our companion animals healthy, and you'd hope for high confidence in the end results. But when one journalist investigated the science behind the meds being used to treat his aging dog's osteoarthritis, he was in for a nasty surprise. Glucosamine and chondroitin food supplements? Next to useless. Tramadol to kill pain? It's probably just getting dogs high. The one treatment that's been proven to help, a non-steroidal anti-inflammatory drug called carprofen, is often left on the shelf because of fears — likely overblown — that it might damage dogs' kidneys. In part, you can blame this sorry state of affairs on a lack of financial incentives for drug companies to run clinical trials on animals. But often, vets aren't paying attention to the studies that have been done. If we want our dogs and cats to receive the best possible medical care, we need to ask our vets some tougher questions about why they think the drugs will work."
Science

It's Not Memory Loss - Older Minds May Just Be Fuller of Information 206

Hugh Pickens DOT Com writes: "Benedict Carey writes in the NYT that the idea that the brain slows with age is one of the strongest in all of psychology. But a new paper suggests that older adults' performance on cognitive tests reflects the predictable consequences of learning on information-processing, and not cognitive decline. A team of linguistic researchers from the University of Tübingen in Germany used advanced learning models to search enormous databases of words and phrases. Since educated older people generally know more words than younger people, simply by virtue of having been around longer, the experiment simulates what an older brain has to do to retrieve a word. When the researchers incorporated that difference into the models, the aging 'deficits' largely disappeared. That is to say, the larger the library you have in your head, the longer it usually takes to find a particular word (or pair). 'What shocked me, to be honest, is that for the first half of the time we were doing this project, I totally bought into the idea of age-related cognitive decline in healthy adults,' says lead author Michael Ramscar but the simulations 'fit so well to human data that it slowly forced me to entertain this idea that I didn't need to invoke decline at all.' The new report will very likely add to a growing skepticism about how steep age-related decline really is. Scientists who study thinking and memory often make a broad distinction between 'fluid' and 'crystallized' intelligence. The former includes short-term memory, like holding a phone number in mind, analytical reasoning, and the ability to tune out distractions, like ambient conversation. The latter is accumulated knowledge, vocabulary and expertise. 'In essence, what Ramscar's group is arguing is that an increase in crystallized intelligence can account for a decrease in fluid intelligence,' says Zach Hambrick, In the meantime the new digital-era challenge to 'cognitive decline' can serve as a ready-made explanation for blank moments, whether senior or otherwise (PDF). 'It's not that you're slow,' says Carey. 'It's that you know so much.'"
Security

FileZilla Has an Evil Twin That Steals FTP Logins 197

Nerval's Lobster writes "On the same day the world discovered Western intelligence agencies were siphoning user information from Angry Birds and other popular smartphone apps, a leading antivirus developer revealed hackers are doing the same thing with one of the most popular open-source applications on the Internet. Maliciously modified versions of the popular FTP application FileZilla look and act just like the real thing, but include extra code that steals the login data typed in by users and sends it to an unauthorized server using the same FTP operation launched by the user without going through a firewall that might spot what it's doing, according to an alert posted this afternoon by antivirus developer Avast Software. The malicious version is fully functional, uses the same graphical interface and component file names as the original, and masks itself further by avoiding any suspicious entries in the system registry, overt attempts to communicate with outside servers or other changes, according to the Jan. 27 alert from Avast. The most obvious differences are that the poisoned version of filezilla.exe is 6.8MB smaller than the real thing and there are two DLL libraries included in the fake that are not present in the original. They are labeled ibgcc_s_dw2-1.dll and libstdc++-6.dll, according to Avast. The official version's Nullsoft installer is v2.45-Unicode; the evil twin uses v2.46.3-Unicode. Automatic updates also fail on the poisoned version 'which is most likely a protection to prevent overwriting of the malware binaries,' Avast added."
Earth

Bees Are Building Nests With Our Waste Plastic 92

Daniel_Stuckey writes "In a paper published in the Ecological Society of America's journal Ecosphere, researchers from York University and the University of Guelph in Canada explained that while plastic waste has previously been shown to have devastating impacts on the environment, less attention has been given to the resourcefulness of species in the face of their changing surroundings. "Plastic waste pervades the global landscape," they wrote. "Although adverse impacts on both species and ecosystems have been documented, there are few observations of behavioral flexibility and adaptation in species, especially insects, to increasingly plastic-rich environments.""

Slashdot Top Deals

"Luke, I'm yer father, eh. Come over to the dark side, you hoser." -- Dave Thomas, "Strange Brew"

Working...