oizo - Slashdot User

Comment Re:Wait a minute! (Score 1) 500

by oizo on Monday April 16, 2012 @12:42PM (#39701151) Attached to: Sergey Brin Says Facebook, Apple and Gov't Biggest Threats To Internet Freedom

i agree with you. but have in mind that google does the same with google groups. it used to be open. now it's locked. everything is a mess, google on the other hand loses revenue lately and they have become very greedy.

Comment Re:Wait a minute! (Score 3, Insightful) 500

by oizo on Sunday April 15, 2012 @09:50PM (#39697031) Attached to: Sergey Brin Says Facebook, Apple and Gov't Biggest Threats To Internet Freedom

Huston we have a problem with closed networks. Google cannot crawl, index and sell ads.

Comment Are you kidding me? (Score 3, Interesting) 500

by oizo on Sunday April 15, 2012 @09:40PM (#39696991) Attached to: Sergey Brin Says Facebook, Apple and Gov't Biggest Threats To Internet Freedom

If Google is the Disneyland of the whole internet why the f*ck I cannot access google/groups without a google account?

MySQL Co-Founder Monty Widenius Quits Sun 140

Posted by timothy on Thursday February 05, 2009 @04:56PM from the good-luck-with-the-next-thing-monty dept.

BobB-nw writes "Michael 'Monty' Widenius, the original developer of the open-source MySQL database, has left Sun Microsystems and is starting his own company, Monty Program Ab, he said in a blog post Thursday. Widenius and Sun had a slightly rocky relationship since the vendor bought MySQL last year for $1 billion. In a much-discussed November blog post, he trashed Sun's decision to give MySQL 5.1 a 'generally available' designation, saying it was riddled with serious bugs. Meanwhile, Monty Program Ab will be 'a true open-source company,' with only a small number of employees who 'strive to have fun together and share the profit we create.' The company will work on the Maria project, a storage engine Widenius and others developed, he wrote.'"

Woman Claims Ubuntu Kept Her From Online Classes 1654

Posted by samzenpus on Thursday January 15, 2009 @11:54AM from the learning-is-hard dept.

stonedcat writes "A Wisconsin woman has claimed that Dell computers and Ubuntu have kept her from going back to school via online classes. She says she has called Dell to request Windows instead however was talked out of it. Her current claim is that she was unaware that she couldn't install her Verizon online disk to access the Internet, nor could she use Microsoft Word to type up her papers."

Comment Re:Iron Man's Suit Defies Physics -- Mostly (Score 2, Interesting) 279

by John Carmack on Thursday May 01, 2008 @03:06PM (#23266718) Attached to: The Science of Iron Man

Hydrogen peroxide powered rocket packs fly for around 30 seconds, because they have a specific impulse of around 125, meaning that one pound of propellant can make 125 pound-seconds of thrust, meaning that it takes about two pounds of propellant for every second you are in the air. Mass ratios are low for anything strapped to a human, so the exponential nature of the rocket equation can be safely ignored.

A pretty hot (both literally and figuratively) bipropellant rocket could manage about twice the specific impulse, and you could carry somewhat heavier tanks, but two minutes of flight on a rocket pack is probably about the upper limit with conventional propellants.

However, an actual jet pack that used atmospheric oxygen could have an Isp ten times higher, allowing theoretical flights of fifteen minutes or so. Here, it really is a matter of technical development, since jet engines have thrust to weight ratios too low to make it practical. There is movement on this technical front, but it will still take a while.

John Carmack

Comment Re:Mathematically provably secure? (Score 1) 234

by Alan Cox on Monday May 08, 2006 @06:53PM (#15289011) Attached to: Computer Security, The Next 50 Years

There are several "provably secure" computer systems. As in you can demonstrate they fulfil certain mathematical constraints and those constraints are absolute. Then you have to write the code and prove the code, then you have to hope the prover is correct and the hardwareis correct. Nothing is 100%.

As to the randomisation stuff - yes I've got examples, and we've hit the same thing in Linux with randomisation. You get cases where memory scribbles cause a problem only if the layout happens to be a specific variant (especially with stack randomisation). From "either it dies or it works" you get "1 in 10,000 times xyz app blows up". That does make debugging much much harder. Of course a good reply to that is "so improve the debugging tools".

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