Catch up on stories from the past week (and beyond) at the Slashdot story archive

 



Forgot your password?
typodupeerror
×

Comment Myself excluded (Score 1) 742

I'm not a kernel hacker, just yet, but it is a personal goal that I've been working towards for a while now. I don't get a chance to work on anything deeply linux at work, but I've seen some shortcomings in the kernel that I'd like to rectify. One example is the lack of a "Ready Boost" like cache, but a bit beefier, utilizing SSD's to alow large databses to run at SSD speed for writes and cached reads while gaining the benefit of cheap spinning disk storage. This is a LOT of theory work and deep kernel driver stuff that I'm glad to learn on my own time.
I might be unique, or perhaps the fact that I'm not actively DOING it makes me another statistic, but i think the kernel is a worthwhile cause.

Comment Re:He can plead the Fifth in jail too. (Score 1) 367

Perhaps she's waiting to see who offers the better deal. All the prosecutor can offer is staying out of jail. If there are enough bigshots behind this, it could mean a very comfortable retirement.

I know one guy who got caught as the patsy for some company wrongdoing. He spent a few months in jail, paid a few hundred K$ in fines. But for admitting to being the sole actor in the crime, he's now better off than he would have ever been working as a corporate officer until retirement.

Comment Possibly Risky But Highly Useful Nonetheless (Score 3, Informative) 293

I saw this news item as well, albeit at PhysOrg, which has linked a few interesting related articles. From the comments, it struck me that a concern is indeed the possibility that stray particles from applying this stuff might get into your lungs or on your eyes, causing all sorts of problems since it apparently binds well to organic substances. Also, one wonders what happens if the coating is degraded on food-handling surfaces. Do fragmented microparticles rip up your insides after being carried into your body within contaminated food?

Even with these concerns, of course, I'd love to test this stuff on various less risky surfaces, such as bathroom tiles and shop tools, with appropriate respiratory and eye protection. Being able to use it on a kitchen countertop would just be a welcome bonus if it turns out to be safe for that use after all. (As an aside, I think that use wouldn't breed resistant bacteria since it simply discourages any bacteria at all from growing on the protected surfaces).

Comment Re:So from what I can gather... (Score 1) 454

Well, perhaps not as often. I'm married and I regularly masturbate to keep the pipes clear and get rid of idle sperm, much like you'd urinate or defecate. They're produced all the time and just sit in the gland waiting to be sent on their way. They are busy little guys though so the prostate needs to be emptied regularly. No point in having all those little guys causing trouble in the prostate.

Since the wife is not interested in sex any more (for various reasons), I have to do something with the sperm so out they go :)

[John]

Comment Re:Wait, what? (Score 1) 275

starting at certain bitrates, there's simply not enough processing power to apply compression.
modern general purpose CPU can gzip at just tens of megabytes per second, simpler and less effective algorithms may give you couple hundred MBytes/sec, which is still just a couple Gb/s.

now imagine you have couple dozen 10 gig ports, in and out. and that's just the beginning, some high-end gear has 100+ 10G ports, all lit.
specialized ASICs can help, but they're not free either and ultimately don't take you very far, especially after throwing in all that memory required for processing.
all in all, none of the high-end routing or switching gear does compression nowadays, it's simply not worth it, in dollars and milliseconds of added latency.

Comment Re:Memeory Leaks (Score 1) 145

Firefox 3.5.7 is using a whopping 174Mb of ram.

Put another way, that would be gobbling up an Earth-shattering 2.83% of the RAM in the desktop I'm typing this on. They should drop everything and get that down to no more than 1.4% of my installed RAM.

Yeah, I know: best practices, bloat, netbooks, old computers, etc. Those are all perfectly valid reasons why all software should be well-crafted and should limit wasted resources. I just can't get excited about the raw numbers involved in this case.

Submission + - The Neuroscience of Screwing Up (wired.com)

resistant writes: As the evocative title from Wired magazine implies, Kevin Dunbar of the University of Toronto has taken an in-depth and fascinating look at scientific error and the scientists who cope with it and sometimes transcend it to find new lines of inquiry. Three key passages follow:

"Dunbar came away from his in vivo studies with an unsettling insight: Science is a deeply frustrating pursuit. Although the researchers were mostly using established techniques, more than 50 percent of their data was unexpected. (In some labs, the figure exceeded 75 percent.) 'The scientists had these elaborate theories about what was supposed to happen,' Dunbar says. 'But the results kept contradicting their theories. It wasn't uncommon for someone to spend a month on a project and then just discard all their data because the data didn't make sense.'" [...]

[...] "The scientific process, after all, is supposed to be an orderly pursuit of the truth, full of elegant hypotheses and control variables. (Twentieth-century science philosopher Thomas Kuhn, for instance, defined normal science as the kind of research in which 'everything but the most esoteric detail of the result is known in advance.') However, when experiments were observed up close — and Dunbar interviewed the scientists about even the most trifling details — this idealized version of the lab fell apart, replaced by an endless supply of disappointing surprises. There were models that didn't work and data that couldn't be replicated and simple studies riddled with anomalies. 'These weren't sloppy people,' Dunbar says. 'They were working in some of the finest labs in the world. But experiments rarely tell us what we think they're going to tell us. That's the dirty secret of science.'"

"While the scientific process is typically seen as a lonely pursuit — researchers solve problems by themselves — Dunbar found that most new scientific ideas emerged from lab meetings, those weekly sessions in which people publicly present their data. Interestingly, the most important element of the lab meeting wasn't the presentation — it was the debate that followed. Dunbar observed that the skeptical (and sometimes heated) questions asked during a group session frequently triggered breakthroughs, as the scientists were forced to reconsider data they'd previously ignored. The new theory was a product of spontaneous conversation, not solitude; a single bracing query was enough to turn scientists into temporary outsiders, able to look anew at their own work."

Mentioned in the article itself is mysterious radio interference from the heavens, a huge error by Aristotle that is commonly repeated even today, and a quote from the late physicist Richard Feynman.

Science

Submission + - Ginkgo Doesn't Improve Memory or Cognative Skills (cnn.com)

JumperCable writes: CNN reports

Ginkgo biloba has failed — again — to live up to its reputation for boosting memory and brain function. Just over a year after a study showed that the herb doesn't prevent dementia and Alzheimer's disease, a new study from the same team of researchers has found no evidence that ginkgo reduces the normal cognitive decline that comes with aging.

In the new study, the largest of its kind to date, DeKosky and his colleagues followed more than 3,000 people between the ages of 72 and 96 for an average of six years. Half of the participants took two 120-milligram capsules of ginkgo a day during the study period, and the other half took a placebo. The people who took ginkgo showed no differences in attention, memory, and other cognitive measures compared to those who took the placebo, according to the study, which was published in this week's Journal of the American Medical Association.

And of course, the link to the study. http://jama.ama-assn.org/cgi/content/full/302/24/2663?home

Hardware

Submission + - Photovoltaic Eye Implant Gives Sight to the Blind (inhabitat.com)

MikeChino writes: Researchers at Stanford University recently announced that they have developed a new artificial retina implant that uses photovoltaic power and could help the blind see. The problem with previous implants was that there was no way send power to the chip in order to process light and data inside the eye, so the new device uses miniature photovoltaic cells to provide power the chip as well as to transmit data through the eye to the brain. The new device has great promise to help people afflicted by the loss of photoreceptor cells by using the power of the sun.
Idle

Submission + - WTF? USPTO Awards LOL Patent to IBM

theodp writes: Among the last batch of patents granted in 2009 was one for IBM's Resolution of Abbreviated Text in an Electronic Communications System. The invention of four IBMers addresses the hitherto unsolvable problem of translating abbreviations to their full meaning — e.g., 'IMHO' means 'In My Humble Opinion' — and vice versa. From the patent: "One particularly useful application of the invention is to interpret the meaning of shorthand terms...For example, one database may define the shorthand term 'LOL' to mean 'laughing out loud.'" USPTO records indicate the patent filing was made more than a year after Big Blue called on the industry to stop what it called 'bad behavior' by companies who seek patents for unoriginal work. Yet another example of what USPTO Chief David Kappos called IBM's apparent schizophrenia on patent policy back when he managed Big Blue's IP portfolio.

Submission + - Bruce Schneier on Airport Security (cnn.com)

the4thdimension writes: Bruce Schneier has an opinion piece on CNN this morning that illustrates his view on airport security. Given that he has several books on security, his opinion carries some weight. In the article, Bruce discusses the rarity of terrorism, the pitfalls of security theater, and the actual difficulty surrounding improving security. What are your thoughts? Do you think that we can actually make air travel (and any other kind of travel, for that matter) truly secure?

Comment Re:It doesn't say "for Microsoft" (Score 4, Funny) 226

In fact it states that this new service is for all users with all operating systems. So while indeed 99% of all users run Microsoft, niche systems like Linux and Mac will be helped too.

I like the way you think.

It's very different from the support centers that I call with hardware problems - like when an update bricked my router - that suggested I:

a) re-install Linux to fix the problem,
alternately, b) don't use a Mac, because they don't do REAL networking,
c) if I were only using Windows, I wouldn't be having this problem,

and my favorite -

d) I must be lying because no one has three operating systems in their house - and if I do, then maybe that's what bricked my router.

But - as I said, I like the way you think, and I wish them many good lucks with this endeavor.

Comment Re:Good for apple (Score 1) 1078

Hard drives don't really get a lot of air circulation through them. They generally have a single hole in the case to allow for pressure equalization, and many have a spongy filter over them so the air exchange with the drive is very minor.

Fans are somewhat designed for it. Fans deal with everything in the air anyway, and have to keep dust out by design since they'll see the highest amount of it, so their design naturally reduces the amount of air that reaches the critical parts. With that said, fans around pets and smokers DO fail sooner on average in my experience.

Slashdot Top Deals

And it should be the law: If you use the word `paradigm' without knowing what the dictionary says it means, you go to jail. No exceptions. -- David Jones

Working...