Stories
Slash Boxes
Comments
typodupeerror delete not in

Slashdot stories can be listened to in audio form via an RSS feed, as read by our own robotic overlord.

Comments: 801 +-   Obama Kicks Off Massive Science Education Effort on Monday November 23, @03:58PM

Posted by ScuttleMonkey on Monday November 23, @03:58PM
from the need-a-new-space-race dept.
education
In a speech at the White House today, President Obama launched a new campaign, "Educate to Innovate," designed to get American students fired up about science, technology, engineering, and math (STEM). The full text of the speech is also available on whitehouse.gov. "The new campaign builds on the President's Inaugural Address, which included a vow to put science 'in its rightful place.' One of those rightful places, of course, is the classroom. Yet too often our schools lack support for teachers or the other resources needed to convey the practical utility and remarkable beauty of science and engineering. As a result, students become overwhelmed in their classes and ultimately disengaged. They lose, and our nation loses too. The partnerships launched today aim to change that. They respond to a challenge made by the President in April, when he spoke at the annual meeting of the National Academy of Sciences and asked the nation's philanthropists, professional and educational societies, corporations, and individuals to collaborate and innovate with the goal of reinvigorating America's STEM educational enterprise. The partnerships announced today — dramatic commitments in the hundreds of millions of dollars, generated through novel collaborations and creative outreach activities — are just the first wave of commitments anticipated in response to his call."
Read More... 801 comments story

Comments: 42 +- Screenshot-sm   Parents Fight Legal Battle For Less Homework on Thursday November 19, @01:02PM

Posted by samzenpus on Thursday November 19, @01:02PM
from the no-more-pencils-no-more-books dept.
idle
Sherri and Tom Milley may be the coolest parents in the world, at least in the eyes of their children. The Milley's were tired of having to help their children with hours of homework each night so they negotiated the "Milleys' Differentiated Homework Plan" with the school. The plan, which ensures their youngest two children will never have to do homework again, was signed by the children, parents and teachers. "It was a constant homework battle every night," Sherri told Canada's Globe and Mail newspaper. "It's hard to get a weeping child to take in math problems. They are tired. They shouldn't be working a second shift."
Read More... 42 comments story

Comments: 221 +-   Tracking the World's Great Unsolved Math Mysteries on Wednesday November 18, @07:06PM

Posted by samzenpus on Wednesday November 18, @07:06PM
from the another-piece-of-pi dept.
math
coondoggie writes "Some math problems are as old as the wind, experts say, and many remain truly unsolved. But a new open source-based site from the American Institute of Mathematics looks to help track work done and solve long-standing and difficult math problems. The Institute, along with the National Science Foundation, has opened the AIM Problem Lists site to offer an organized and annotated collection of unsolved problems, and previously unsolved problems, in a specialized area of mathematics research. The problem list provides a snapshot of the current state of research in a particular research area, letting experts track new developments, and newcomers gain a perspective on the subject."
Read More... 221 comments story

Comments: 255 +-   "Mandelbulb," a 3D Mandlebrot Construct, Discovered on Sunday November 15, @07:13PM

Posted by kdawson on Sunday November 15, @07:13PM
from the to-boldly-go dept.
math
symbolset writes "Many know the beauty and complexity of the Mandelbrot set. For some years now a few enterprising mathematicians / rendering fiends have been seeking a true 3D Mandelbrot set. A month ago a solution was found, and it is awesome to behold."
Read More... 255 comments story

Comments: 221 +-   The Space Garbage Scow, ala Cringely on Sunday November 15, @11:21AM

Posted by Soulskill on Sunday November 15, @11:21AM
from the dream-big dept.
space
An anonymous reader writes "Robert X. Cringely once again educates and amuses with his take on how we could clean up the garbage that's in orbit around Earth. I cannot vouch for his math, but it makes sense to me. Quoting: 'We’d start in a high orbit, above the space junk, because we could trade that altitude for speed as needed, simply by flying lower, trading potential energy for kinetic. Dragging the net behind a little unmanned spacecraft, my idea would be to go past each piece of junk in such a way that it not only lodges permanently in the net, but that doing so adds kinetic energy (hitting at shallow angles to essentially tack like a sailboat off the debris). But wait, there’s more! You not only have to try to get energy from each encounter, it helps if — like in a game of billiards or pool — each encounter results in an effective ricochet sending the net in the proper trajectory for its next encounter. Rinse and repeat 18,000 times.'"
Read More... 221 comments story

Comments: 90 +-   The Math of a Fly's Eye May Prove Useful on Friday November 13, @11:08AM

Posted by kdawson on Friday November 13, @11:08AM
from the saw-that-one-coming dept.
math
cunniff writes "Wired Magazine points us to recent research that demonstrates an algorithm derived from the actual biological implementation of fly vision (PLoS paper here). Quoting the paper: 'Here we present a model with multiple levels of non-linear dynamic adaptive components based directly on the known or suspected responses of neurons within the visual motion pathway of the fly brain. By testing the model under realistic high-dynamic range conditions we show that the addition of these elements makes the motion detection model robust across a large variety of images, velocities and accelerations.' The researchers claim that 'The implementation of this new algorithm could provide a very useful and robust velocity estimator for artificial navigation systems.' Additionally, the paper describes the algorithm as extremely simple, capable of being implemented on very small and power-efficient processors. Best of all, the entire paper is public and hosted via a service that allows authenticated users to give feedback."
Read More... 90 comments story

Comments: 314 +-   Micro-Black Holes Make Poor Planet Killers on Friday November 13, @08:09AM

Posted by timothy on Friday November 13, @08:09AM
from the they-don't-even-make-good-nightclubs dept.
space
astroengine writes "Physicists are getting excited about the possibility of micro-black holes (MBH) being produced by the LHC and an international group of researchers have done the math to see what kind of impact they could have on the Earth. Unfortunately, if you're a megalomaniac looking for your next globe-eating weapon, you can scrub MBHs off your WMD list. If a speedy MBH is produced, flying through our planet, it will only have a few seconds to accrete the mass of a few atoms. It would then be lost to space where it will evaporate. If a slow MBH is produced, dropping into the Earth where it sits for a few billion years, the results are even more boring."
Read More... 314 comments story

Comments: 20 +-   90% of 200 CUNY Students Can't Do Basic Algebra Problems on Thursday November 12, @03:19PM

Posted by timothy on Thursday November 12, @03:19PM
from the so-that's-like-8-students? dept.
education
vvaduva writes "Basic algebra involving fractions and decimals stumped a group of City University of New York freshmen — suggesting city schools aren't preparing them, a CUNY report shows. During their first math class at one of CUNY's four-year colleges, 90% of 200 students tested couldn't solve a simple algebra problem, the report by the CUNY Council of Math Chairs found. Only a third could convert a fraction into a decimal."
Read More... 20 comments story

Comments: 421 +-   What Computer Science Can Teach Economics on Monday November 09, @05:12PM

Posted by ScuttleMonkey on Monday November 09, @05:12PM
from the just-build-better-computers dept.
math
eldavojohn writes "A new award-winning thesis from an MIT computer science assistant professor showed that the Nash equilibrium of complex games (like the economy or poker) belong to problems with non-deterministic polynomial (NP) complexity (more specifically PPAD complexity, a subset of TFNP problems which is a subset of FNP problems which is a subset of NP problems). More importantly there should be a single solution for one problem that can be adapted to fit all the other problems. Meaning if you can generalize the solution to poker, you have the ability to discover the Nash equilibrium of the economy. Some computer scientists are calling this the biggest development in game theory in a decade."
Read More... 421 comments story

Comments: 229 +- Screenshot-sm   The Big Questions on Monday November 09, @01:31PM

Posted by samzenpus on Monday November 09, @01:31PM
from the read-all-about-it dept.
books
Frequent Slashdot contributor Bennett Haselton changes things up today by reviewing The Big Questions: Tackling the Problems of Philosophy with Ideas from Mathematics, Economics and Physics. Questions that big need a big review and you can learn what Bennett has to say about it all by reading below.
Read 23969 More Bytes... 229 comments story

Comments: 626 +-   Why Computers Suck At Math on Saturday October 31, @07:16AM

Posted by Soulskill on Saturday October 31, @07:16AM
from the must-be-lit-majors dept.
math
antdude writes "This TechRadar article explains why computers suck at math, and how simple calculations can be a matter of life and death, like in the case of a Patriot defense system failing to take down a Scud missile attack: 'The calculation of where to look for confirmation of an incoming missile requires knowledge of the system time, which is stored as the number of 0.1-second ticks since the system was started up. Unfortunately, 0.1 seconds cannot be expressed accurately as a binary number, so when it's shoehorned into a 24-bit register — as used in the Patriot system — it's out by a tiny amount. But all these tiny amounts add up. At the time of the missile attack, the system had been running for about 100 hours, or 3,600,000 ticks to be more specific. Multiplying this count by the tiny error led to a total error of 0.3433 seconds, during which time the Scud missile would cover 687m. The radar looked in the wrong place to receive a confirmation and saw no target. Accordingly no missile was launched to intercept the incoming Scud — and 28 people paid with their lives.'"
Read More... 626 comments story

Comments: 823 +-   How To Enter Equations Quickly In Class? on Thursday October 29, @03:36PM

Posted by timothy on Thursday October 29, @03:36PM
from the napkins-and-a-digital-camera dept.
inputdev
AdmiralXyz writes "I'm a university student, and I like to take notes on my (non-tablet) computer whenever possible, so it's easier to sort, categorize, and search through them later. Trouble is, I'm going into higher and higher math classes, and typing "f_X(x) = integral(-infinity, infinity, f(x,y) dy)" just isn't cutting it anymore: I need a way to get real-looking equations into my notes. I'm not particular about the details, the only requirement is that I need to keep up with the lecture, so it has to be fast, fast, fast. Straight LaTeX is way too slow, and Microsoft's Equation Editor isn't even worth mentioning. The platform is not a concern (I'm on a MacBook Pro and can run either Windows or Ubuntu in a virtual box if need be), but the less of a hit to battery life, the better. I've looked at several dedicated equation editing programs, but none of them, or their reviews, make any mention of speed. I've even thought about investing in a low-end Wacom tablet (does anyone know if there are ultra-cheap graphics tablets designed for non-artists?), but I figured I'd see if anyone at Slashdot has a better solution."
Read More... 823 comments story

Comments: 138 +-   Data Entry Errors Resulted In Improper Sentences on Friday October 23, @09:23AM

Posted by kdawson on Friday October 23, @09:23AM
from the month-here-a-month-there dept.
court
shrik writes "Slate has a look at the efforts of Emily Owens, in 2005 a Ph.D student in economics at the University of Maryland, who 'came across thousands of inconsistencies and errors in the sentencing recommendations provided to judges' by the Maryland State Commission on Criminal Sentencing Policy. Quoting: 'The sentencing guidelines for judges were based on a work-sheet [PDF] that "graded the severity of a convict's crime and his risk to society", ostensibly to make the rulings meted out more objective in nature. But on carefully studying her data, Owens noticed something wasn't adding up — the system seemed to be producing 1 error in every ten trials. She also realized that this "recommendation system" actually mattered: crimes and criminals analyzed to be quite similar were resulting in systematically different punishments correlated with the work-sheet.' The source of these discrepancies was ultimately found to be a simple, but very significant, PEBKAC: 'More than 90 percent of errors resulted from the person completing the work sheet [usually the DA, but signed off by the defense attorney] entering the figure from a cell next to the correct one. ... The remaining errors came mostly from incorrect choice of criminal statute in calculating the offense score and from a handful of math errors (in operations that were literally as simple as adding two plus two).' Timo Elliott's BI Questions Blog lists the morals of the story."
Read More... 138 comments story

Comments: 597 +-   Computer-Based System To Crack Down On Casino Card Counters on Friday October 16, @01:13AM

Posted by timothy on Friday October 16, @01:13AM
from the de-niro-system-more-effective dept.
math
An anonymous reader writes with this excerpt from Yahoo Tech outlining a system currently being researched: "Card counting is perfectly legal — all a counter does is attempt to keep track of whether the cards remaining in a deck are favorable to his winning a hand (mainly if there are lots of tens and aces remaining in the deck) — but it's deeply frowned upon by Vegas casinos. Those caught counting cards are regularly expelled from casinos on the spot and are often permanently banned from returning. But given the slim house odds on Blackjack, it's often said that a good card counter can actually tip the odds in his favor by carefully controlling the way he bets his hands. And Vegas really doesn't care for that. The anti-card-counter system uses cameras to watch players and keep track of the actual 'count' of the cards, the same way a player would. It also measures how much each player is betting on each hand, and it syncs up the two data points to look for patterns in the action. If a player is betting big when the count is indeed favorable, and keeping his chips to himself when it's not, he's fingered by the computer... and, in the real world, he'd probably receive a visit from a burly dude in a bad suit, too. The system reportedly works even if the gambler intentionally attempts to mislead it with high bets at unfavorable times." It's not developed in Vegas, though, according to the brief description (the other projects are also interesting) from the University of Dundee's release, but rather in conjunction with the Dundee Casino.
Read More... 597 comments story

Comments: 232 +-   12M Digit Prime Number Sets Record, Nets $100,000 on Thursday October 15, @10:43AM

Posted by CmdrTaco on Thursday October 15, @10:43AM
from the that's-a-lotta-bits dept.
math
coondoggie writes "A 12-million-digit prime number, the largest such number ever discovered, has landed a voluntary math research group a $100,000 prize from the Electronic Frontier Foundation (EFF). The number, known as a Mersenne prime, is the 45th known Mersenne prime, written shorthand as 2 to the power of 43,112,609, minus 1 . A Mersenne number is a positive integer that is one less than a power of two, the group stated. The computing project called the Great Internet Mersenne Prime Search (GIMPS) made the discovery on a computer at the University of California, Los Angeles (UCLA) Mathematics Department."
Read More... 232 comments story

Comments: 91 +-   NASA's LCROSS Moon Impact Mission Provides Great Data on Friday October 09, @04:43PM

Posted by ScuttleMonkey on Friday October 09, @04:43PM
from the yes-but-is-it-wet? dept.
nasa
Several sources are sending us reports of NASA's recent LCROSS Moon impact mission. While the visual results seem to be less than stunning, LCROSS Principal Investigator Anthony Colaprete said the initial results produced "the data we need," but refused to say anything about "water or no water." "The goal of this dual impact was to have the Centaur upper stage impact first, allowing the LCROSS spacecraft to observe close-up the results of the impact. In fairness, the view from LCROSS as it approached the moon was amazing — even though there was no obvious visual evidence of impact, which early data from the infrared camera on the craft indicates did occur. What happens next is a whole lot of math and science. The LCROSS spacecraft included nine individual science instruments. This suite of instruments consisted of one visible camera, two near-infrared cameras, two mid-infrared cameras, a visible light spectrometer, two near-infrared spectrometers, and a photometer. All nine of those instruments were gathering data simultaneously and streaming that data back to Earth."
Read More... 91 comments story

Comments: 341 +-   Microsoft Plans Largest-Ever Patch Tuesday on Thursday October 08, @06:49PM

Posted by timothy on Thursday October 08, @06:49PM
from the 24-hours-but-bigger-minutes dept.
bug
CWmike writes "Microsoft said it will deliver its largest-ever number of security updates on Tuesday to fix 13 flaws in every version of Windows, as well as Internet Explorer (IE), Office, SQL Server, important developer tools and Forefront Security client software. Among the updates will be the first for the final, or release to manufacturing, code of Windows 7, Microsoft's newest operating system. The 13 updates slated for next week, eight of them pegged 'critical,' beat the previous record of 12 updates shipped in February 2007 and again in October 2008." Update Reader Kurt Seifried writes to correct the math a bit, pointing to Microsoft's Advance Notification page for the release, which says that rather than 13 flaws, this Patch Tuesday involves "13 bulletins (eight critical and five important), addressing 34 vulnerabilities ... Most of these updates require a restart so please factor that into your deployment planning."
Read More... 341 comments story

Comments: 99 +-   New Comic Book About Logic, Math, and Madness on Friday October 02, @04:39PM

Posted by ScuttleMonkey on Friday October 02, @04:39PM
from the only-math-some-kids-are-likely-to-get-these-days dept.
math
areYouAHypnotist writes to tell us the New York Times has the scoop on a new comic book about the quest for logical certainty in mathematics. "The story spans the decades from the late 19th century to World War II, a period when the nature of mathematical truth was being furiously debated. The stellar cast, headed up by Bertrand Russell, includes the greatest philosophers, logicians and mathematicians of the era, along with sundry wives and mistresses, plus a couple of homicidal maniacs, an apocryphal barber, and Adolf Hitler."
Read More... 99 comments story

Comments: 219 +-   Red Hat Files Amicus Brief In Bilski Patent Case on Friday October 02, @10:45AM

Posted by kdawson on Friday October 02, @10:45AM
from the shut-'em-down dept.
patents
I Don't Believe in Imaginary Property writes "Red Hat has filed a friend of the court brief with the Supreme Court in regards to the In Re Bilski case, which has become incredibly important due to the possibility that it could redefine the scope of patentable subject matter in a way that affects software patents. In the brief, Red Hat argues that software should not be considered patentable subject matter because it causes economic harm due to patents being granted with vague subject matter, which makes it impossible to say that a given piece of software doesn't arguably infringe upon someone's patent. They also point out Knuth's famous quote that you can't differentiate between 'numeric' and 'non-numeric' algorithms, because numbers are no different from other kinds of precise information." Read below for the submitter's thoughts on an earlier amicus brief filed in the Bilski case by Professor Lee Hollaar.
Read More... 219 comments story

Comments: 175 +-   Nvidia Discloses Details On Next-Gen Fermi GPU on Wednesday September 30, @06:57PM

Posted by samzenpus on Wednesday September 30, @06:57PM
from the getting-the-skinny dept.
graphics
EconolineCrush writes "The Tech Report has published the first details describing the architecture behind Nvidia's upcoming Fermi GPU. More than just a graphics processor, Fermi incorporates many enhancements targeted specifically at general-purpose computing, such as better support for double-precision math, improved internal scheduling and switching, and more robust tools for developers. Plus, you know, more cores. Some questions about the chip remain unanswered, but it's not expected to arrive until later this year or early next."
Read More... 175 comments story

All theoretical chemistry is really physics; and all theoretical chemists know it. -- Richard P. Feynman