hírolvasó

Mars Orbiter Beams Back Images of Comet's Surprisingly Tiny Nucleus

Slashdot - k, 2014-10-21 14:53
astroengine writes The High-Resolution Imaging Science Experiment (HiRISE) camera on board NASA's Mars Reconnaissance Orbiter (MRO) has become the first instrument orbiting Mars to beam back images of comet Siding Spring's nucleus and coma. And by default, it has also become the first ever mission to photograph a long-period comet's pristine nucleus on its first foray into the inner solar system. Interestingly, through analysis of these first HiRISE observations, astronomers have determined that the icy nucleus at the comet's core is much smaller than originally thought. "Telescopic observers had modeled the size of the nucleus as about half a mile, or one kilometer, wide," writes a NASA Jet Propulsion Laboratory news release. "However, the best HiRISE images show only two to three pixels across the brightest feature, probably the nucleus, suggesting a size less than half that estimate."

Read more of this story at Slashdot.








Kategóriák: Napi hírek

Mars Orbiter Beams Back Images of Comet's Surprisingly Tiny Nucleus

Slashdot - k, 2014-10-21 14:53
astroengine writes The High-Resolution Imaging Science Experiment (HiRISE) camera on board NASA's Mars Reconnaissance Orbiter (MRO) has become the first instrument orbiting Mars to beam back images of comet Siding Spring's nucleus and coma. And by default, it has also become the first ever mission to photograph a long-period comet's pristine nucleus on its first foray into the inner solar system. Interestingly, through analysis of these first HiRISE observations, astronomers have determined that the icy nucleus at the comet's core is much smaller than originally thought. "Telescopic observers had modeled the size of the nucleus as about half a mile, or one kilometer, wide," writes a NASA Jet Propulsion Laboratory news release. "However, the best HiRISE images show only two to three pixels across the brightest feature, probably the nucleus, suggesting a size less than half that estimate."

Read more of this story at Slashdot.








Kategóriák: Napi hírek

Mars Orbiter Beams Back Images of Comet's Surprisingly Tiny Nucleus

Slashdot - k, 2014-10-21 14:53
astroengine writes The High-Resolution Imaging Science Experiment (HiRISE) camera on board NASA's Mars Reconnaissance Orbiter (MRO) has become the first instrument orbiting Mars to beam back images of comet Siding Spring's nucleus and coma. And by default, it has also become the first ever mission to photograph a long-period comet's pristine nucleus on its first foray into the inner solar system. Interestingly, through analysis of these first HiRISE observations, astronomers have determined that the icy nucleus at the comet's core is much smaller than originally thought. "Telescopic observers had modeled the size of the nucleus as about half a mile, or one kilometer, wide," writes a NASA Jet Propulsion Laboratory news release. "However, the best HiRISE images show only two to three pixels across the brightest feature, probably the nucleus, suggesting a size less than half that estimate."

Read more of this story at Slashdot.








Kategóriák: Napi hírek

Mars Orbiter Beams Back Images of Comet's Surprisingly Tiny Nucleus

Slashdot - k, 2014-10-21 14:53
astroengine writes The High-Resolution Imaging Science Experiment (HiRISE) camera on board NASA's Mars Reconnaissance Orbiter (MRO) has become the first instrument orbiting Mars to beam back images of comet Siding Spring's nucleus and coma. And by default, it has also become the first ever mission to photograph a long-period comet's pristine nucleus on its first foray into the inner solar system. Interestingly, through analysis of these first HiRISE observations, astronomers have determined that the icy nucleus at the comet's core is much smaller than originally thought. "Telescopic observers had modeled the size of the nucleus as about half a mile, or one kilometer, wide," writes a NASA Jet Propulsion Laboratory news release. "However, the best HiRISE images show only two to three pixels across the brightest feature, probably the nucleus, suggesting a size less than half that estimate."

Read more of this story at Slashdot.








Kategóriák: Napi hírek

Emacs 24.4 released

Linux Weekly News - k, 2014-10-21 14:25
Version 24.4 of the Emacs editor is out. New features this time around include a built-in web browser (unfortunately named "eww"), better multi-monitor support, the ability to save and restore the state of frames and windows, digital signatures on Emacs Lisp packages, access control list support, and much more. See the NEWS file for all the details.
Kategóriák: Linux

Facebook To DEA: Stop Using Phony Profiles To Nab Criminals

Slashdot - k, 2014-10-21 14:12
HughPickens.com writes: CNNMoney reports that Facebook has sent a letter to the U.S. Drug Enforcement Administration demanding that agents stop impersonating users on the social network. "The DEA's deceptive actions... threaten the integrity of our community," Facebook chief security officer Joe Sullivan wrote to DEA head Michele Leonhart. "Using Facebook to impersonate others abuses that trust and makes people feel less safe and secure when using our service." Facebook's letter comes on the heels of reports that the DEA impersonated a young woman on Facebook to communicate with suspected criminals, and the Department of Justice argued that they had the right to do so. Facebook contends that their terms and Community Standards — which the DEA agent had to acknowledge and agree to when registering for a Facebook account — expressly prohibit the creation and use of fake accounts. "Isn't this the definition of identity theft?" says privacy researcher Runa Sandvik. The DEA has declined to comment and referred all questions to the Justice Department, which has not returned CNNMoney's calls.

Read more of this story at Slashdot.








Kategóriák: Napi hírek

Kipróbáltuk: Galaxy Note 4, negyedikre betalált

HWSW - k, 2014-10-21 13:33
A legfontosabb gyengeségeket javítja a Galaxy Note negyedik kiadásában a Samsung, a gondozott külső és az összeszedett szoftver révén igazán szerethető telefon lett a Note 4. A nagy kijelzővel könnyű együtt élni, bár kétségtelenül megszokást igényel. Az Android szerencsére elviszi hátán a terméket, a Samsung innovációi továbbra is zsákutcák.

Kategóriák: Napi hírek

V is for Vivid (Ubuntu 15.04)

LinuxToday - k, 2014-10-21 13:30
Kategóriák: Linux

[keres] Dell PowerEdge 1800 CPU hűtőbordát

HUP adás-vétel - k, 2014-10-21 13:07

Sziasztok!

Hozzájutottunk (ránk maradt) egy PE 1800, 1 cpu-val. Az ebay-től rendeltünk bele procit (párban), meg némi ramot, de a hűtőbordákat drágának tartom (4-5000 HUF + posta - ~olcsóbb volt a 2 cpu...).
Ha valakinek van esetleg már nem működő fenti gépe (elég régi vas ahhoz, hogy nem esélytelen), és a/egy hűtőbordát el tudná juttatni (egyetemi) intézményünkbe, hálásak lennénk.

Jelige: építsünk sz*ból várat, de azt is minél olcsóbban... :)

Köszönjük!

Sok újdonsággal bővült a Microsoft felhője

HWSW - k, 2014-10-21 12:35
Egy hétfő esti kaliforniai eseményen mutatta be a Microsoft az Azure felhőszolgáltatás új képességeit. A vállalat egy helyben futtatható cloudplatformot is bejelentett, amelyhez a Dell adja a hardveres hátteret.

Kategóriák: Napi hírek

Top 4 Linux network managers

LinuxToday - k, 2014-10-21 12:30
Kategóriák: Linux

3D-Printed Gun Earns Man Two Years In Japanese Prison

Slashdot - k, 2014-10-21 11:21
jfruh writes: Japan has some of the strictest anti-gun laws in the world, and the authorities there aim to make sure new technologies don't open any loopholes. 28-year-old engineer Yoshitomo Imura has been sentenced to two years in jail after making guns with a 3D printer in his home in Kawasaki.

Read more of this story at Slashdot.


Kategóriák: Napi hírek

3D-Printed Gun Earns Man Two Years In Japanese Prison

Slashdot - k, 2014-10-21 11:21
jfruh writes: Japan has some of the strictest anti-gun laws in the world, and the authorities there aim to make sure new technologies don't open any loopholes. 28-year-old engineer Yoshitomo Imura has been sentenced to two years in jail after making guns with a 3D printer in his home in Kawasaki.

Read more of this story at Slashdot.








Kategóriák: Napi hírek

Australian Physicists Build Reversible Tractor Beam

Slashdot - k, 2014-10-21 09:33
An anonymous reader writes: Physicists at Australian National University have developed a tiny tractor beam that improves in several ways upon previous attempts. First, it operates on scales which, while still tiny, are higher than in earlier experiments. The beam can move particles up to 200 microns in diameter, and it can do so over a distance of 20 cm. "Unlike previous techniques, which used photon momentum to impart motion, the ANU tractor beam relies on the energy of the laser heating up the particles and the air around them (abstract). The ANU team demonstrated the effect on gold-coated hollow glass particles. The particles are trapped in the dark center of the beam. Energy from the laser hits the particle and travels across its surface, where it is absorbed creating hotspots on the surface. Air particles colliding with the hotspots heat up and shoot away from the surface, which causes the particle to recoil, in the opposite direction. To manipulate the particle, the team move the position of the hotspot by carefully controlling the polarization of the laser beam."

Read more of this story at Slashdot.








Kategóriák: Napi hírek

Az iPhone 6 húzta az Apple negyedévét

HWSW - k, 2014-10-21 09:13
Hétfő este közzétette a harmadik naptári negyedévre eső negyedik pénzügyi negyedévének eredményeit az Apple. A bevétel és a nyereség is szépen nőtt, elsősorban az iPhone 6 sikerének köszönhetően. Az iPad eladásai nagyot estek.

Kategóriák: Napi hírek

Doctor Who To Teach Kids To Code

Slashdot - k, 2014-10-21 08:18
DCFC writes: The BBC is releasing a game to help 8- to 11-year-old kids get into coding. Based on Doctor Who, it alternates between a standard platform game and programming puzzles that introduce the ideas of sequence, loops, if..then, variables and a touch of event-driven programming. Kids will get to program a Dalek to make him more powerful. (Apparently the BBC thinks upgrading psychopathic, racist death machines is a good idea!)

Read more of this story at Slashdot.








Kategóriák: Napi hírek

Security Company Tries To Hide Flaws By Threatening Infringement Suit

Slashdot - k, 2014-10-21 06:20
An anonymous reader writes: An RFID-based access control system called IClass is used across the globe to provide physical access controls. This system relies on cryptography to secure communications between a tag and a reader. Since 2010, several academic papers have been released which expose the cryptographic insecurity of the IClass system. Based on these papers, Martin Holst Swende implemented the IClass ciphers in a software library, which he released under the GNU General Public License. The library is useful to experiment with and determine the security level of an access control system (that you own or have explicit consent to study). However, last Friday, Swende received an email from INSIDE Secure, which notified him of (potential) intellectual property infringement, warning him off distributing the library under threat of "infringement action." Interestingly, it seems this is not the first time HID Global has exerted legal pressure to suppress information.

Read more of this story at Slashdot.








Kategóriák: Napi hírek

Security Company Tries To Hide Flaws By Threatening Infringement Suit

Slashdot - k, 2014-10-21 06:20
An anonymous reader writes: An RFID-based access control system called IClass is used across the globe to provide physical access controls. This system relies on cryptography to secure communications between a tag and a reader. Since 2010, several academic papers have been released which expose the cryptographic insecurity of the IClass system. Based on these papers, Martin Holst Swende implemented the IClass ciphers in a software library, which he released under the GNU General Public License. The library is useful to experiment with and determine the security level of an access control system (that you own or have explicit consent to study). However, last Friday, Swende received an email from INSIDE Secure, which notified him of (potential) intellectual property infringement, warning him off distributing the library under threat of "infringement action." Interestingly, it seems this is not the first time HID Global has exerted legal pressure to suppress information.

Read more of this story at Slashdot.








Kategóriák: Napi hírek

Security Company Tries To Hide Flaws By Threatening Infringement Suit

Slashdot - k, 2014-10-21 06:20
An anonymous reader writes: An RFID-based access control system called IClass is used across the globe to provide physical access controls. This system relies on cryptography to secure communications between a tag and a reader. Since 2010, several academic papers have been released which expose the cryptographic insecurity of the IClass system. Based on these papers, Martin Holst Swende implemented the IClass ciphers in a software library, which he released under the GNU General Public License. The library is useful to experiment with and determine the security level of an access control system (that you own or have explicit consent to study). However, last Friday, Swende received an email from INSIDE Secure, which notified him of (potential) intellectual property infringement, warning him off distributing the library under threat of "infringement action." Interestingly, it seems this is not the first time HID Global has exerted legal pressure to suppress information.

Read more of this story at Slashdot.








Kategóriák: Napi hírek