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

 


Forgot your password?
Close
typodupeerror
×

Submission + - Lockheed Martin's 100 MW Compact Fusion Nuclear Reactor (globalspec.com)

Submitted by Roger Pink
Roger Pink writes: When I first heard the announcement regarding Lockheed Martin's plan to produce a compact fusion reactor (CFR) in five years, I was pretty skeptical. Then a lot of skeptical articles were written and I felt my first instinct was validated. The only problem is I think I was wrong. Having researched this story for an article I've written, I'm pretty much convinced this is actually happening.

This isn't cold fusion. Back in the late eighties a couple chemists thought they had fusion and rushed to publish out of fear of having the credit stolen. It was a complete failure of the scientific process and it set fusion back two decades. This time is different. The project leader has over a decade of experience studying and modeling fusion. The institution has a history of novel technologies and absolutely no reason to risk their credibility.

In short, it really seams like it's more likely there will be a CFR in the next ten years then not. Here's an article for a little background why:

http://insights.globalspec.com...

Submission + - Scientists Discover That Exercise Changes Your DNA

Submitted by HughPickens.com
HughPickens.com writes: The human genome is astonishingly complex and dynamic, with genes constantly turning on or off, depending on what biochemical signals they receive from the body. Scientists have known that certain genes become active or quieter as a result of exercise but they hadn’t understood how those genes knew how to respond to exercise. Now the NYT reports that scientists at the Karolinska Institute in Stockholm have completed a study where they recruited 23 young and healthy men and women, brought them to the lab for a series of physical performance and medical tests, including a muscle biopsy, and then asked them to exercise half of their lower bodies for three months. The volunteers pedaled one-legged at a moderate pace for 45 minutes, four times per week for three months. Then the scientists repeated the muscle biopsies and other tests with each volunteer. Not surprisingly, the volunteers’ exercised leg was more powerful now than the other, showing that the exercise had resulted in physical improvements. But there were also changes within the exercised muscle cells’ DNA. Using technology that analyses 480,000 positions throughout the genome, they could see that new methylation patterns had taken place in 7,000 genes (an individual has 20–25,000 genes).

In a process known as DNA methylation, clusters of atoms, called methyl groups, attach to the outside of a gene like microscopic mollusks and make the gene more or less able to receive and respond to biochemical signals from the body. In the exercised portions of the bodies, many of the methylation changes were on portions of the genome known as enhancers that can amplify the expression of proteins by genes. And gene expression was noticeably increased or changed in thousands of the muscle-cell genes that the researchers studied. Most of the genes in question are known to play a role in energy metabolism, insulin response and inflammation within muscles. In other words, they affect how healthy and fit our muscles — and bodies — become. Many mysteries still remain but the message of the study is unambiguous. “Through endurance training — a lifestyle change that is easily available for most people and doesn’t cost much money,” says Sara Lindholm, “we can induce changes that affect how we use our genes and, through that, get healthier and more functional muscles that ultimately improve our quality of life.”

Submission + - ICANN Hacked Including Root DNS Systems (darknet.org.uk)

Submitted by schwit1
schwit1 writes: Attackers sent staff spoofed emails appearing to coming from icann.org. The organization notes it was a “spear phishing” attack, suggesting employees clicked on a link in the messages, and then typed their usernames and passwords into a bogus webpage, providing hackers with the keys to their accounts.

“The attack resulted in the compromise of the email credentials of several ICANN staff members,” the announcement reads, noting that the attack happened in late November and was discovered a week later.

With those details, the hackers then managed to access a number of systems within ICANN, including the Centralized Zone Data System (CZDS), the wiki pages of the Governmental Advisory Committee (GAC), the domain registration Whois portal, and the organization’s blog.

Submission + - Critical Git security vulnerability announced

Submitted by Anonymous Coward
An anonymous reader writes: Github has announced a security vulnerability and has encourage users to update their Git clients as soon as possible. The blog post reads in part: "A critical Git security vulnerability has been announced today, affecting all versions of the official Git client and all related software that interacts with Git repositories, including GitHub for Windows and GitHub for Mac. Because this is a client-side only vulnerability, github.com and GitHub Enterprise are not directly affected. The vulnerability concerns Git and Git-compatible clients that access Git repositories in a case-insensitive or case-normalizing filesystem. An attacker can craft a malicious Git tree that will cause Git to overwrite its own .git/config file when cloning or checking out a repository, leading to arbitrary command execution in the client machine. Git clients running on OS X (HFS+) or any version of Microsoft Windows (NTFS, FAT) are exploitable through this vulnerability. Linux clients are not affected if they run in a case-sensitive filesystem....Updated versions of GitHub for Windows and GitHub for Mac are available for immediate download, and both contain the security fix on the Desktop application itself and on the bundled version of the Git command-line client."

Submission + - Kepler Makes First Exoplanet Discovery After Mission Reboot (discovery.com)

Submitted by astroengine
astroengine writes: NASA’s Kepler space telescope has detected its first new extrasolar planet after mission engineers were able to save the mission from a premature death after two of the exoplanet hunter’s four stabilizing reaction wheels failed last year. Called “K2, the extended mission arose from an “innovative idea” that appears to have given the prolific telescope a new lease on life. “Last summer, the possibility of a scientifically productive mission for Kepler after its reaction wheel failure in its extended mission was not part of the conversation,” said Paul Hertz, NASA’s astrophysics division director at the agency’s headquarters in Washington D.C. “Today, thanks to an innovative idea and lots of hard work by the NASA and Ball Aerospace team, Kepler may well deliver the first candidates for follow-up study by the James Webb Space Telescope to characterize the atmospheres of distant worlds and search for signatures of life.”

Submission + - Satellite captures glowing plants from space (sciencemag.org)

Submitted by sciencehabit
sciencehabit writes: About 1% of the light that strikes plants is re-emitted as a faint, fluorescent glow—a measure of photosynthetic activity. Today, scientists released a map of this glow as measured by the Orbiting Carbon Observatory-2, a NASA satellite launched in July with the goal of mapping the net amount of carbon in the atmosphere. The map reveals that tropical rainforests near the equator are actively sucking up carbon, while the Corn Belt in the eastern United States, near the end of its growing season, is also a sink. Higher resolution fluorescence mapping could one day be used to help assess crop yields and how they respond to drought and heat in a changing climate.

Submission + - Extracting Data from the Microsoft Data (jeffhuang.com)

Submitted by Anonymous Coward
An anonymous reader writes: The Microsoft Band introduced last month hosts a slew of amazing sensors, but like so many wearable computing devices, users are unable to access their own data. A Brown University professor decompiles the app, finds that the data is transmitted to the Microsoft "cloud", and explains how to intercept the traffic to retrieve the raw minute-by-minute data captured by the Band.
Security

Grinch Vulnerability Could Put a Hole In Your Linux Stocking 118

Posted by timothy from the pretty-generic-description-there dept.
itwbennett writes In a blog post Tuesday, security service provider Alert Logic warned of a Linux vulnerability, named grinch after the well-known Dr. Seuss character, that could provide attackers with unfettered root access. The fundamental flaw resides in the Linux authorization system, which can inadvertently allow privilege escalation, granting a user full administrative access. Alert Logic warned that Grinch could be as severe as the Shellshock flaw that roiled the Internet in September. Update: 12/19 04:47 GMT by S : Reader deathcamaro points out that Red Hat and others say this is not a flaw at all, but expected behavior.

Submission + - Apple 'failing to protect Chinese factory workers'

Submitted by mrspoonsi
mrspoonsi writes: Poor treatment of workers in Chinese factories which make Apple products has been discovered by an undercover BBC Panorama investigation. Filming on an iPhone 6 production line showed Apple's promises to protect workers were routinely broken. It found standards on workers' hours, ID cards, dormitories, work meetings and juvenile workers were being breached at the Pegatron factories. Apple said it strongly disagreed with the programme's conclusions. Exhausted workers were filmed falling asleep on their 12-hour shifts at the Pegatron factories on the outskirts of Shanghai. One undercover reporter, working in a factory making parts for Apple computers, had to work 18 days in a row despite repeated requests for a day off. Another reporter, whose longest shift was 16 hours, said: "Every time I got back to the dormitories, I wouldn't want to move. "Even if I was hungry I wouldn't want to get up to eat. I just wanted to lie down and rest. I was unable to sleep at night because of the stress."

Comment Re:Land of the free (Score 2) 580

by rjh (#48628395) Attached to: Reaction To the Sony Hack Is 'Beyond the Realm of Stupid'

So, the NJ State Senate Majority Leader admits that New Jersey's law, which would make smart guns mandatory within three years of the first commercially-available smart gun being sold anywhere in the United States, can be reversed... if only the NRA will agree to stop obstructing the sale of smart guns within the United States, which they do specifically because of the New Jersey law?

I don't see the problem. The NRA is obstructing a law that goes against their stated interests, and New Jersey is promising to reverse that law if only the NRA will stop obstructing what that law regulates?

For the NRA's stated position, see here. Particularly:

NRA does not oppose new technological developments in firearms; however, we are opposed to government mandates that require the use of expensive, unreliable features, such as rigging a firearm so that it could not fire unless it received an electronic signal from an electronic bracelet worn by the firearm's lawful owner (as was brought up in Holder's recent testimony).

That's their stated policy, right there.

Comment Re:The Batman, Theater Attack Comparison (Score 1) 580

by rjh (#48628111) Attached to: Reaction To the Sony Hack Is 'Beyond the Realm of Stupid'

Not quite. Courts have been willing to hold businesses liable for damages due to foreseeable criminal acts, yes, but so far no court has been willing to hold businesses liable for damages due to acts of war levied by a foreign state.

That's a pretty big jump to make, incidentally.

The risk is not that the courts might hold the theater chain responsible -- the courts wouldn't, on the grounds that the theater chain isn't responsible for protecting their clientele against acts of war from a foreign nation-state. The risk is that the lawsuit would be filed and it would cost the theater $20 million or more just to get the courts to dismiss all charges.

That $20 million is probably considerably more than they would make from screening The Interview, so the logical business case is to not screen it.

It's sad, but ... the real problem is not that the courts might hold the theater liable: it's that in our current system, getting sued is, in itself, its own punishment.

Comment Re:Land of the free (Score 1) 580

by rjh (#48627973) Attached to: Reaction To the Sony Hack Is 'Beyond the Realm of Stupid'

The NRA does not object to smart gun technologies, and believes that people who wish to be allowed to buy them should be allowed to buy them.

The NRA objects to smart guns becoming mandatory, because the technology for smart guns is nowhere near mature.

The number one desired trait in a firearm, moreso than caliber or capacity or anything else, is reliability. The reason why Glocks are so popular isn't because of caliber, capacity, or aesthetics -- all of which other firearms do better. It's because a Glock is as reliable as gravity. If you chamber a round and pull the trigger, it goes boom. If you don't pull the trigger, it won't.

I have personally seen a Glock get thrown into a bucket of wet, goopy mud and left there for fifteen minutes just so the mud had the opportunity to permeate the whole of the firearm. At the end of the fifteen minutes the owner pulled the Glock out, shook it precisely three times to dislodge mud from the barrel, and fired one hundred seventy rounds through it in the space of about five minutes, just one magazine after another after another... just to prove the weapon was reliable.

Do you believe the current crop of smart gun technologies are equally reliable? The ones I've had the chance to play around with definitely aren't. They can't even agree on whether they need to fail safe or fail deadly.

Submission + - AnandTech bought by Purch, same owner as Tom's Hardware

Submitted by DrunkenTerror
DrunkenTerror writes: Following founder Anand Lal Shimpi's departure a few months back, seminal tech site AnandTech has been bought by Purch, the same company that owns their 1990s era competitor, Tom's Hardware. Long-time readers shouldn't worry, however, since "AnandTech and Tom’s Hardware remain editorially independent, and though no longer competitors, the goal is to learn from one another. "

Submission + - Cause And Effect: How a Revolutionary New Statistical Test Can Tease Them Apart

Submitted by KentuckyFC
KentuckyFC writes: Statisticians have long thought it impossible to tell cause and effect apart using observational data. The problem is to take two sets of measurements that are correlated, say X and Y, and to find out if X caused Y or Y caused X. That's straightforward with a controlled experiment in which one variable can be held constant to see how this influences the other. Take for example, a correlation between wind speed and the rotation speed of a wind turbine. Observational data gives no clue about cause and effect but an experiment that holds the wind speed constant while measuring the speed of the turbine, and vice versa, would soon give an answer. But in the last couple of years, statisticians have developed a technique that can tease apart cause and effect from the observational data alone. It is based on the idea that any set of measurements always contain noise. However, the noise in the cause variable can influence the effect but not the other way round. So the noise in the effect dataset is always more complex than the noise in the cause dataset. The new statistical test, known as the additive noise model, is designed to find this asymmetry. Now statisticians have tested the model on 88 sets of cause-and-effect data, ranging from altitude and temperature measurements at German weather stations to the correlation between rent and apartment size in student accommodation.The results suggest that the additive noise model can tease apart cause and effect correctly in up to 80 per cent of the cases (provided there are no confounding factors or selection effects). That's a useful new trick in a statistician's armoury, particularly in areas of science where controlled experiments are expensive, unethical or practically impossible.

Slashdot Top Deals

Kleeneness is next to Godelness.

Close