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Math

Help Me Get My Math Back? 467

nwm writes "I am trying to refresh my math skills back to the point that I can take college-level statistics and calculus courses. I took everything through AP calculus in high school, had my butt kicked by college calculus, and dropped out shortly thereafter. Twenty+ years later, I need to take a few math courses to wrap up a degree. I've dug around some and found a few sites with useful information, but I'm hoping the Slashdot crowd can offer some good resources — sites, books, programs, online tutors, etc. I really don't want to have to take a series of algebra-geometry-trig 'pre-college' level courses (each at full cost and each a semester long) just to warm my brain up; I'd much rather find some resources, review, cram, and take the placement test with some confidence. Any suggestions?"
Security

Anatomy of a SQL Injection Attack 267

Trailrunner7 writes "SQL injection has become perhaps the most widely used technique for compromising Web applications, thanks to both its relative simplicity and high success rate. It's not often that outsiders get a look at the way these attacks work, but a well-known researcher is providing just that. Rafal Los showed a skeptical group of executives just how quickly he could compromise one of their sites using SQL injection, and in the process found that the site had already been hacked and was serving the Zeus Trojan to visitors." Los's original blog post has more and better illustrations, too.
Google

Yes, Google Does De-List Pages; But When? 133

Frequent Slashdot contributor Bennett Haselton writes "Google finds itself inserting a disclaimer once again above some offensive search results. But the disclaimer still leads many to believe (incorrectly) that Google doesn't tamper with search results even in cases of 'harmful' or 'offensive' material. We know that Google has in fact de-listed some pages at the request of offended parties. What is their real policy on the issue?" Read on for Bennet's essay.
Patents

BetaNet Sues Everyone For Remote SW Activation 227

eldavojohn writes "Not to be out patent trolled by Eolas, a mystery company named 'BetaNet, LLC' is suing: Adobe Systems, Inc, Apple, Inc., Arial Software, LLC, Autodesk, Inc.,, CARBONITE, INC., Corel Corp., Eastman Kodak Co., International Business Machines Corp., Intuit, Inc., Microsoft Corp., McAfee, Inc., Oracle Corp., Rockwell Automation, Inc., Rosetta Stone, Inc., SAP America, Inc., Siemens Corp. and Sony Creative Software, Inc. for infringement of their patent entitled Secure system for activating personal computer software at remote locations. And of course, this was filed in our favoritest of favorite places: Marshall, TX (Texas Eastern District Court)."
Books

The DIY Book Scanner 177

azoblue writes "Daniel Reetz did not want to lug around heavy textbooks, so he built a book scanner to create digital copies. '... over three days, and for about $300, he lashed together two lights, two Canon Powershot A590 cameras, a few pieces of acrylic and some chunks of wood to create a book scanner that's fast enough to scan a 400-page book in about 20 minutes (PDF). To use it, he simply loads in a book and presses a button, then turns the page and presses the button again. Each press of the button captures two pages, and when he's done, software on Reetz's computer converts the book into a PDF file. The Reetz DIY book scanner isn't automated — you still need to stand by it to turn the pages. But it's fast and inexpensive.'"
Open Source

Linux Kernel 2.6.32 Released 195

diegocg writes "Linus Torvalds has officially released the version 2.6.32 of the Linux kernel. New features include virtualization memory de-duplication, a rewrite of the writeback code faster and more scalable, many important Btrfs improvements and speedups, ATI R600/R700 3D and KMS support and other graphic improvements, a CFQ low latency mode, tracing improvements including a 'perf timechart' tool that tries to be a better bootchart, soft limits in the memory controller, support for the S+Core architecture, support for Intel Moorestown and its new firmware interface, run-time power management support, and many other improvements and new drivers. See the full changelog for more details."
Software

Inkscape 0.47 Released 225

derrida writes "After over a year of intensive development and refactoring, Inkscape 0.47 is out. This version of the SVG-based vector graphics editor brings improved performance and tons of new features, including: timed autosave, Spiro splines, auto-smooth nodes, Eraser tool, new modes in Tweak tool, snapping options toolbar & greater snapping abilities, new live path effects (including Envelope), over 200 preset SVG filters, new Cairo-based PS and EPS export, spell checker, many new extensions, optimized SVG code options, and much more. Additionally, it would be wrong to not mention the hundreds of bug fixes. Check out the full release notes for more information about what has changed, enjoy the screenshots, or just jump right to downloading your package for Windows, Linux, or Mac OS X." We've been following the progress of Inkscape for years (2006, 2005, 2004).
Input Devices

How To Enter Equations Quickly In Class? 823

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."

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