Please create an account to participate in the Slashdot moderation system

 



Forgot your password?
typodupeerror
Mars

Next Mars Mission Selected For Funding 61

First time accepted submitter Dr Bip writes "Flush with the good news coming from Mars, NASA has announced that JPL has won funding for the next mission to Mars. It seems that the lander will be carrying a self-driving mole developed by the German space agency (DLR). Commiserations to the two other projects that were also in the selection finale (TiME and CHopper). Note the DLR mole's last attempt to get to Mars was with the Beagle 2 lander, fingers crossed for this second attempt."
Earth

Nature: Global Temperatures Are a Falling Trend 786

New submitter sosume writes "An article in Nature shows that temperatures in Roman times were actually higher than current temperatures. A team lead by Dr. Esper of the University of Mainz has researched tree rings and concluded that over the past 2,000 years, the forcing is up to four times as large as the 1.6W/m^2 net anthropogenic forcing since 1750 using evidence based on maximum latewood density data from northern Scandinavia, indicating that this cooling trend was stronger (0.31C per 1,000 years, ±0.03C) than previously reported, and demonstrated that this signature is missing in published tree-ring proxy records."

Comment Re:A ray of sanity (Score 3, Interesting) 246

I don't want them to let Flash on iDevices. I've refused to install Flash on my development machine at work since before there was an iPhone (well, before the world at large knew about it, anyway), and IMO the web has improved with the reduction of Flash use where it was entirely unnecessary.

The only downside to all this is the ads that used to use Flash (and thus were automatically blocked for me, no effort necessary) are now using other techniques that don't rely on browser plugins.

Comment Think Like a Computer Scientist (Score 1) 525

If I was recommending a book for a peer in a non-computer related field, I'd definitely recommend How to Think Like a Computer Scientist, which assumes no programming knowledge and builds up the thought process behind decomposing problems, etc. It's been a while since I read it, but I think it would work reasonably well for an advanced preteen. The version I read used Python, which I think is a great introductory language.

http://www.greenteapress.com/thinkpython/ for a dead-tree version, or in various electronic formats (for free[-as-in-beer-and-in-speech]).

Math

The Math of Leap Days 225

The Bad Astronomer writes "We have leap days every four years because the Earth's day and year don't divide evenly. But there's more to it than that... a lot more. A year isn't exactly 365.25 days long, and that leads to needing more complicated math and rules for when we do and don't have a leap year. If you've ever wanted to see that math laid out, now's your chance, and it only comes along every four years. Except every hundred years. Except every four hundred years."

Comment Re:Considering who most computer users are these d (Score 1) 282

Hi, I used to be a complete skeptic when it came to tablets (not just iPads). Then, recently, I saw someone with an iPad + stylus + Notes plus in a meeting, just happily jotting down his hand-written notes on the iPad. And just watching the ease with which he could do that might just have sold me a tablet.

If you want another encouragement, about a year ago I switched to a tablet, because I was carrying a stack of documents about 3 inches thick to a weekly meeting -- often with a pair of them changing between the meetings each week, as the requirements for our system changed, requiring me to print out new ones. After I switched, I only took my tablet. Plus, as a bonus, I could take a bunch of other documents I occasionally wanted reference to in the meetings at no additional cost, even though previously it would have doubled the size of the document stack.

Every once in a while, it did feel a little limiting due to not being able to look at multiple documents at the same time, but overall it was a big help. Plus, the PDFs I loaded in had a linked table of contents one touch away, so I was often able to jump around in the document better than those who had paper copies.

I wasn't the first in those meetings to have a tablet; I was the second. By the time the meetings wrapped up a few months ago, there are 5 tablets being used when we met, and only a couple of holdouts on paper.

Transportation

What Scorpions Have To Teach Aircraft Designers 127

First time accepted submitter elloGov writes "The north African desert scorpion, Androctonus australis, is a hardy creature. Most animals that live in deserts dig burrows to protect themselves from the sand-laden wind. Not Androctonus; it usually toughs things out at the surface. Yet when the sand whips by at speeds that would strip paint away from steel, the scorpion is able to scurry off without apparent damage thanks to the unique structure of its carapace. Dr Han Zhiwu of Jilin University and colleagues have found that surface irregularities based on the scorpion's exoskeleton could substantially minimize atmospheric dust damage to aircraft."
Entertainment

DC Comics Announces "Before Watchmen" 130

eldavojohn writes "Currently DC Comics' site has a banner announcing a new series called "Before Watchmen." Unfortunately the blog pages for this new series appear to be experiencing high traffic and are unreachable. But a number of sites are breaking down these new endeavors that will be giving backstories to the seven characters and who will be creating each of those series. There's also speculation ranging from how much this must upset Alan Moore (egg frying on his forehead seems to be the popular guess) to the theory that this is simply for more movie material. There's an abundance of information from interviews released today."
The Military

Self-Guided Bullet Can Hit Targets a Mile Away 421

New submitter jpwilliams writes "Gizmag reports that researchers at Sandia National Laboratories have tested a 10-centimeter bullet that can be fired from a smooth-bore rifle to hit a laser-marked target one mile away. The bullet 'includes an optical sensor in the nose to detect a laser beam on a target. The sensor sends information to guidance and control electronics that use an algorithm in an eight-bit central processing unit to command electromagnetic actuators. These actuators steer tiny fins that guide the bullet to the target.' Interestingly, accuracy improves with targets that are further away, because 'the bullet's motions settle the longer it is in flight.'"
Medicine

Fighting Mosquitoes With GM Mosquitoes 521

doug141 writes "Scientists are releasing genetically modified male mosquitoes that produce flightless female offspring. The male offspring go on to wipe out another generation of females. This is similar to the way screwworms were eradicated in the U.S., except with nature itself making more of the modified males. Field trials are already underway."

Comment Re:HJKL (Score 1) 271

I very often use j & k to move up/down lines. I use h & l much less frequently, as w, e, & b are usually better for that anyway. As for hitting escape, I'm almost always in command mode anyway; I don't type and occasionally escape to command mode, but rather am in command mode and occasionally insert text.

Power

Scientists Create New Type of Superconductor Wires 96

An anonymous reader writes "Scientists in Israel have used technology created at a U.S.-funded national research lab to created a new kind of wire spun from sapphire crystals, that is a vastly better conductor than traditional copper wires. The research could have profound implications for renewable energy since much of the generation is in remote locations. It could help bring more electricity from renewable sources to cities."
Security

A Linux Distro From the US Department of Defense 210

donadony writes "The Lightweight Portable Security distribution was created by the Software Protection Initiative under the direction of the Air Force Research Laboratory and the U.S. Department Of Defense. The idea behind it is that government workers can use a CD-ROM or USB stick to boot into a tamper proof, pristine desktop when using insecure computers such as those available in hotels or a worker's own home. The environment that it offers should be largely resistant to Internet-borne security threats such as viruses and spyware, particularly when launched from read-only media such as a CDROM. The LPS system does not mount the hard drive of the host machine, so leaves no trace of the user's activities behind."

Comment Re:this (Score 1) 495

In the time we all spend reviewing my code, we could have each fixed separate bugs in the software or completed a new feature.

Look at your last 50 or 100 bug fixes. How many of them could have been caught with a simple review? Take that data and apply it to your statement here: perhaps in the time you spend having your code reviewed, you and your coworkers will fix more bugs than you would have separately. It's just that bugs not submitted aren't as visible to anyone outside those people.

Try it. Keep some metrics on "bugs" found. You might be surprised.

Slashdot Top Deals

Congratulations! You are the one-millionth user to log into our system. If there's anything special we can do for you, anything at all, don't hesitate to ask!

Working...