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

 



Forgot your password?
typodupeerror
×

Submission + - Majority of Young American Adults Think Astrology is a Science 2

Hugh Pickens DOT Com writes: Americans have always had a strange fascination with astrology. First Lady Nancy Reagan famously employed the services of an astrologer after the assassination attempt on her husband. Now UPI reports that according to a new survey by the National Science Foundation, nearly half of all Americans say astrology is either "very scientific" or "sort of scientific." Younger respondents, in particular, were the least likely to regard astrology as unscientific, with 58% of the youngest group (18 — 24) saying that astrology is either "very scientific" or "sort of scientific" (PDF). What's most alarming is that American attitudes about science are moving in the wrong direction. Skepticism of astrology hit an all-time high in 2004, when 66 percent of Americans said astrology was total nonsense. But each year, fewer and fewer respondents have dismissed the connections between star alignment and personality as bunk. Among respondents in the 25 — 44 age group 49% of respondents in the 2012 survey said astrology is either "very scientific" or "sort of scientific," up from 36% in 2010. So what's behind this data? The lead author of the report chapter in question, public opinion specialist John Besley of Michigan State University, cautions that we should probably wait for further data "to see if it's a real change" before speculating. But, he admits, the apparent increase in astrology belief "popped out to me when I saw it."

Comment Re:How is presenting all theories a problem? (Score 1) 665

I'll take a moment to answer several responses to this.

To call Creationism a theory is to miss the correct definition of the word theory. Many people seem to think of theory as a neat idea to explain nature, but that falls far short.

In this case, the key differentiator is that a theory is testable, typically by experimentation. When you claim to have a theory, you'd also better define some sort of experiment or other set of measurements that can prove, disprove, or modify that theory.

From what I've read, Creationism is at the (stoner voice) "Wow Man!" (/stoner voice) stage.

Of course the downside is that there may be no such thing as "string theory", because there seems to be no way to prove or disprove it. To be fair, from what I can see, those who call themselves string theorists are quite upset about that, and would love nothing more than a real experiment.

Submission + - Is Verizon Already Slowing Netflix Down? (davesblog.com)

hondo77 writes: From Dave's Blog: "I’ve since tested this almost every day for the last couple of weeks. During the day – the bandwidth is normal to AWS. However, after 4pm or so – things get slow. In my personal opinion, this is Verizon waging war against Netflix. Unfortunately, a lot of infrastructure is hosted on AWS. That means a lot of services are going to be impacted by this."

Comment Nothing to do with... (Score 1) 2

..."loud enough to hear in space" - that's silly, with near-vacuum.

The setup is for simulating the "sound" of liftoff and early atmospheric flight. There was serious concern about the sound level of the engines shaking the rocket apart at liftoff, which is part of why there's the flood of water. Even though the water is loud, it helps dampen the sound of the rocket exhaust. Then there's the "sound" of flying through the air, to the point that they have to throttle the engines back for a portion of the flight - because of "dynamic pressure." The Challenger disaster happened right after this inteval - the last normall communication was, "go for throttle-up", meaning that they were high enough for the dynamic pressure to have dropped enough that they could put the pedal to the metal, again.

Submission + - Netherlands Audio Speakers: Loud Enough to be heard in Space (io9.com) 2

retroworks writes: Located in Noordwijk, Netherlands, and part of ESA's ESTEDC Test Center, is the Large European Acoustic Facility (LEAF). I09, Gizmodo Australia, and The Mail Online run stories about the awesome power of sound amplification system "powerful enough to kill a human being".

LEAF is capable of generating more than 154 decibels, the sound equivalent to standing next to several jets taking off. It is used to blast satellites and spacecraft with sound. Large horns are housed in a sound-proofed room that is 16.4metres tall. One wall of horns stands 11 m wide by 9 m deep and 16.4 m high. The nitrogen that's shot through the horns can produce a range of noise up to more than 154 decibels.

LEAF requires all the doors to be closed, operating in steel-reinforced concrete walls to contain the noise. The walls are coated with an epoxy resin to reflect noise, producing a uniform sound field within the chamber. The article doesn't say whether the knobs go past 11.

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

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."

Submission + - Making rare metal by mixing the two metals on both sides of the periodic table (google.com) 1

wingwatcher writes: Prof. Hiroshi Kitagawa in Kyoto Univ made artificial Rhodium (45) by mixing Ruthenium (44) and Palladium (46). The price of artificial Rhodium is US $4-14 per gram, and the price of natural Rhodium is US $40 per gram. Kitagawa said "It was a simple idea. We want to make other rare metals by the same way". This is alchemy.

Submission + - Who makes the best disk drives? (zdnet.com) 1

Hamsterdan writes: Backblaze, which open sourced their Storage Pod a few years ago, is now giving drive failure rates. They currently have over 27,000 consumer grade drives spinning in Backblaze storage pods.

Almost 13,000 each are Seagate and Hitachi drives, almost 3000 Western Digital drives and a too small for statistical reporting smattering of Toshiba and Samsung drives.

One cool thing: Backblaze buys drives the way you and I do: they get the cheapest drives that will work. Their workload is almost hundred percent write. Because they spread the incoming writes over several drives their workload isn't very performance intensive either.

Comment Re:eh? (Score 3, Interesting) 72

Speed is relative, so is velocity. Rosetta is going to rendesvous with the comet, and go into orbit around it. At that point the speed and velocity will both be quite slow. I'm guessing that the biggest problem for the lander will be not bouncing off or floating away - there's next to no gravity.

Slashdot Top Deals

To write good code is a worthy challenge, and a source of civilized delight. -- stolen and paraphrased from William Safire

Working...