token0 - Slashdot User

Reflected Gravitational Waves 329

Posted by kdawson on Tuesday March 24, 2009 @05:33AM from the could-prove-useful dept.

WSOGMM sends in an arXiv blog post about reflecting gravity waves. The speculation is that reflected gravity could go some ways toward explaining the odd readings being returned by Gravity Probe B. "In the couple of weeks since he introduced the idea that superconducting sheets can reflect gravity waves, Raymond Chiao from the University of California, Merced, has been busy with a couple of buddies working out how big this effect is... Chiao and co. ask how big the effect of a gravitational wave on a thin superconducting sheet is compared to the effect on an ordinary conducting sheet. The answer? 42 orders of magnitude bigger."

Linux Kernel 2.6.29 Released 265

Posted by kdawson on Monday March 23, 2009 @10:07PM from the fullly-baked dept.

diegocgteleline.es writes "Linus Torvalds has released Linux 2.6.29. The new features include the inclusion of kernel graphic modesetting, WiMAX, access point Wi-Fi support, inclusion of squashfs and a preliminary version of btrfs, a more scalable version of RCU, eCryptfs filename encryption, ext4 no journal mode, OCFS2 metadata checksums, improvements to the memory controller, support for filesystem freeze, and other features. Here is the full list of changes."

Comment Re:Broke the internets! (Score 2, Insightful) 407

by token0 on Saturday January 31, 2009 @06:37PM (#26680331) Attached to: Google Search Flagging Everything As Potentially Harmful

I don't know of any case in which Google sold my data, but.. but.. Google has to be evil in some way!

Seriously, how is parent getting modded insightful?

Scientists Teleport Information Between Ions a Meter Apart 220

Posted by Soulskill on Friday January 23, 2009 @09:05PM from the perfecting-those-heisenberg-compensators dept.

erickhill writes with word that scientists from the University of Maryland have successfully transferred information from one charged atom to another without having it cross the intervening space of about one meter. The academic paper is available in the journal Science, though it requires a subscription to see more than the abstract. Scientists have previously teleported unmolested qubits between photons of light, and between photons and clouds of atoms. But researchers have long sought to teleport qubits between distant atoms. Light's high speed of travel makes photons good transporters of information, but for storing quantum information, atoms are a much better choice because they're easier to hold on to. 'This is a big deal,' comments Myungshik Kim, a quantum physicist at Queen's University Belfast in the United Kingdom. 'To store information as it is in quantum form, you have to have a teleportation scheme available between two stationary qubits. Then you can store them and manipulate them later on.'"

Ubuntu Mobile Looks At Qt As GNOME Alternative 262

Posted by kdawson on Tuesday January 20, 2009 @08:22PM from the friendly-competition dept.

Derwent sends along a Computerworld piece which begins: "The Ubuntu Mobile operating system is undergoing its most radical change with a port to the ARM processor for Internet devices and netbooks, and may use Nokia's LGPL Qt development environment as an alternative to GNOME. During a presentation at this year's linux.conf.au conference, Canonical's David Mandala said Ubuntu Mobile has changed a lot over the past year... 'I worked on ARM devices for many years so a full Linux distribution on ARM is exciting,' Mandala said, adding one of the biggest challenges is reminding developers to write applications for 800 by 600 screen resolutions found in smaller devices. 'The standard [resolution] for GNOME [apps] is 800 by 600, but not all apps are. For this reason Ubuntu Mobile uses the GNOME Mobile (Hildon framework) instead of a full GNOME desktop, but since Nokia open sourced Qt under the LGPL it may consider this as an alternative.'"

Spiraling Magnetic Signal Shows Up In the Cosmic Background 168

Posted by timothy on Friday January 09, 2009 @06:22AM from the headline-can-only-hold-so-many-words dept.

pln2bz writes "Astronomers looking for confirmation for emissions from early stellar formation in the cosmic microwave background radiation instead found a signal indicating large amounts of unaccounted-for spiraling magnetic fields in space, but without any accompanying infrared emissions. The discovery possibly dredges up the claims of plasma cosmologists like Eric Lerner, who claim that the intergalactic medium is a strong absorber of the CMB with the absorption occurring in a fog of narrow filaments. These filaments are the result of plasma's natural tendency, as observed within the plasma laboratory and in novelty plasma globes, to form braided, ropelike structures which are collimated by coiled magnetic fields."

The Return of (Old) PC Graphic Adventures 93

Posted by Soulskill on Monday December 22, 2008 @02:09AM from the back-to-the-past-ure dept.

KingofGnG writes "Though they belong to a genre already considered defunct and inadequate for the mainstream video game market, adventure games have a glorious past, a past that deserves to be remembered, and, of course, replayed. At the center of a good part of this effort of collective memory, there is ScummVM, the virtual machine which acts like an interface between the feelings and the puzzles from the good old times and the modern operating systems. As already highlighted before, the ScummVM target has grown immensely over time, going from the simple support of the 'classic' adventure games par excellence published by Lucasfilm/Lucasarts, to a range that includes virtually any single puzzle-solving game developed from the beginning of time up to the advent of the (Windows) NT platform. The last video game engine added to ScummVM within the past few days is Groovie, created by the software house Trilobyte for its first title released in 1993, The 7th Guest ."

Java Performance On Ubuntu Vs. Windows Vista 258

Posted by kdawson on Friday December 19, 2008 @11:49AM from the steaming-cuppa dept.

Henckle writes "Phoronix did a comparison of the Java performance between Ubuntu and Windows Vista. They tested both Java and OpenJDK on Ubuntu 8.10 and Java on Windows Vista Premium SP1, all with stock configurations. To no-one's surprise, Ubuntu was faster in a majority of the tests. The two OSs were similar in ray-tracing, and Vista was faster at Java OpenGL due to shortcomings with the Linux graphics driver."

Comment Why, should it? (Score 2, Funny) 165

by token0 on Wednesday December 17, 2008 @04:07PM (#26150079) Attached to: Is JavaScript Ready For Creating Quality Games?

In related stories:
Is bash ready for creating quality databases?
Are homing pigeons ready for creating quality mobile phone networks?
Is brainfuck ready for creating anything (quality)?

Towards a Wiki For Formally Verified Mathematics 299

Posted by kdawson on Tuesday September 30, 2008 @06:14PM from the preparing-the-ground-for-our-robot-overlords dept.

An anonymous reader writes "Cameron Freer, an instructor in pure mathematics at MIT, is working on an intriguing project called vdash.org (video from O'Reilly Ignite Boston 4): a math wiki which only allows true theorems to be added! Based on Isabelle, a free-software theorem prover, the wiki will state all of known mathematics in a machine-readable language and verify all theorems for correctness, thus providing a knowledge base for interactive proof assistants. In addition to its benefits for education and research, such a project could reveal undiscovered connections between fields of mathematics, thus advancing some fields with no further work being necessary."

Safe Stem Cells Produced From Adult Cells 207

Posted by Soulskill on Sunday September 28, 2008 @11:51AM from the spare-parts dept.

hackingbear writes "Wired, citing a paper published in Science magazine, reports that Harvard scientists may have found a safer way of giving a flake of skin the biologically alchemical powers of embryonic stem cells by turning adult cells into versatile, embryonic-like cells without causing permanent damage. The technique involves 'adding cell-reprogramming genes to adenoviruses, a type of virus that infects cells without affecting their DNA.' Four-month trials on mice demonstrated that the resulting stem cells are free from unpredictable cancer-inducing mutations. This is definitely a breakthrough in stem cell research." Additional coverage is available at Yahoo, and Science hosts the research paper, although you'll need a subscription to see more than the abstract.

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