Sunday, February 3, 2013

Twitter Careers: New Jobs Posted This Week - AllTwitter

This week,?Twitter added 19 new jobs to its?career page.

And here they are:

Business Development & Sales

Account Manager (Atlanta)

Self Serve Ad Product Marketing Manager (San Francisco)

Support Agent ? Ad Operations (San Francisco)

Corporate

Technical Recruiter (San Francisc0)

Engineering

Database Administrator ? Vertica (San Francisco)

Manager, Reliability Engineer: Distributed Data (San Francisco)

Infrastructure Operations

Senior Network Engineer (San Francisco)

Senior Network Security Engineer (San Francisco)

International?

Administrative Assistant (Dublin)

HR Business Partner/Recruiter Generalist (Brazil)

Mid-Market Account Executive (Brazil)

Sales Marketing ? Editorial Manager (London)

Sales Marketing ? Events Coordinator (London)

Senior Recruiter (London)

User Safety ? Domain Expert (Dublin)

User Services ? International Agent ? Turkisk/Dutch/Russian (Dublin)

Revenue ROI Product Manager (San Francisco)

Support

User Services ? Spam Operations (San Francisco)

University

Communications Intern (San Francisco)

And remember, ?you can always find more great?social media?jobs?on our?job?board. For real-time openings and employment news, follow?@MBJobPost.

(Bird?image from Shutterstock)

Source: http://www.mediabistro.com/alltwitter/twitter-careers-4_b35472

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Astronomers ask 'where are all the dwarf galaxies?'

Feb. 1, 2013 ? Astronomers of the international CLUES collaboration have identified "Cosmic Web Stripping" as a new way of explaining the famous missing dwarf problem: the lack of observed dwarf galaxies compared with that predicted by the theory of Cold Dark Matter and Dark Energy.

High-precision observations over the last two decades have indicated that our Universe consists of about 75% Dark Energy, 20% Dark Matter and 5% ordinary matter. Galaxies and matter in the universe clump in an intricate network of filaments and voids, known as the Cosmic Web. Computer experiments on massive supercomputers have shown that in such a Universe a huge number of small "dwarf" galaxies weighing just one thousandth of the Milky Way should have formed in our cosmic neighbourhood. Yet only a handful of these galaxies are observed orbiting around the Milky Way. The observed scarcity of dwarf galaxies is a major challenge to our understanding of galaxy formation.

An international team of researchers has studied this issue within the Constrained Local UniversE Simulations project (CLUES). The CLUES simulations use the observed positions and peculiar velocities of galaxies within Tens of Millions of light years of the Milky Way to accurately simulate the local environment of the Milky Way. "The main goal of this project is to simulate the evolution of the Local Group -- the Andromeda and Milky Way galaxies and their low-mass neighbours -- within their observed large scale environment," said Stefan Gottl?ber of the Leibniz Institute for Astrophysics Potsdam.

Analysing the CLUES simulations, the astronomers have now found that some of the far-out dwarf galaxies in the Local Group move with such high velocities with respect to the Cosmic Web that most of their gas can be stripped and effectively removed. They call this mechanism "Cosmic Web Stripping," since it is the pancake and filamentary structure of the cosmos that is responsible for depleting the dwarfs' gas supply.

"These dwarfs move so fast that even the weakest membranes of the Cosmic Web can rip off their gas," explained Alejandro Ben?tez LLambay, PhD student at the Instituto de Astronom?a Te?rica y Experimental of the Universidad Nacional de C?rdoba in Argentina, and first author of the publication of this study. Without a large gas reservoir out of which to form stars, these dwarf galaxies should be so small and dim that they would be hardly be visible today. The missing dwarfs may simply be too faint to see.

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The above story is reprinted from materials provided by Leibniz-Institut f?r Astrophysik Potsdam (AIP).

Note: Materials may be edited for content and length. For further information, please contact the source cited above.


Journal Reference:

  1. Alejandro Ben?tez-Llambay, Julio F. Navarro, Mario G. Abadi, Stefan Gottl?ber, Gustavo Yepes, Yehuda Hoffman, Matthias Steinmetz. Dwarf Galaxies and the Cosmic Web. The Astrophysical Journal, 2013; 763 (2): L41 DOI: 10.1088/2041-8205/763/2/L41

Note: If no author is given, the source is cited instead.

Disclaimer: Views expressed in this article do not necessarily reflect those of ScienceDaily or its staff.

Source: http://feeds.sciencedaily.com/~r/sciencedaily/top_news/top_technology/~3/ufZqWZhbMxM/130201090359.htm

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Saturday, February 2, 2013

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Source: http://forums.ferra.ru/index.php?showtopic=54321

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Windows 8 Pro Is Still Only $15 If You Don't Mind Being a Liar (Update: Not Any More)

Technically, Thursday was the last day to pick up a Windows 8 upgrade for $40 before it jumped up to $200, but that's not exactly the case if you know what you're doing. There's a loophole that will let you get that upgrade for a scant $15, and all you have to do is lie to Microsoft; they're not even checking. More »


Source: http://feeds.gawker.com/~r/gizmodo/full/~3/770vrcyu4oM/windows-8-pro-is-still-only-15-if-you-dont-mind-being-a-liar

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Dog Evolution Included Getting the Starch In

60-Second Science

A comparison of the dog and wolf genomes finds that dogs have genetic changes that allow them to digest starches, which might have eased their way to becoming man's best friend. Karen Hopkin reports.

More 60-Second Science

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When you think about dog food, you probably picture more meat than potato. But a new study finds that, unlike wolves, dogs have genes that allow them to digest starch. That evolutionary adaptation may have helped fuel their domestication. The report is in the journal Nature. [Eric Axelsson et al, The genomic signature of dog domestication reveals adaptation to a starch-rich diet]

Dogs and wolves hail from a common canine ancestor. And though you can still see a strong resemblance, many traits distinguish the two today. Wolves have larger teeth and skulls than dogs do. And they?re far less likely to bring you your newspaper and slippers.

To figure out how such differences might have evolved, researchers compared the DNA of a dozen wolves and 14 different dog breeds, from cocker spaniels to German Shepherds. And they found 36 places where the dogs? genes stray from those of the wolf. Some of these genes have to do with the brain, but a surprising number help pooches process carbs. [See also Kate Wong, Adaptation to Starchy Diet Was Key to Dog Domestication]

That metabolic trick may have made it easier for dogs to stomach hanging around with humans, particularly once people started farming. The leftover grains in the scrap heap may have attracted animals that, over time, evolved an ability to carbo-load. And ultimately convinced them to stay.

?Karen Hopkin

[The above text is a transcript of this podcast]?

Scientific American is part of the Nature Publishing Group
?


Source: http://rss.sciam.com/click.phdo?i=f3d0a6900e292d4db3c8e799bd9c205e

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Deep thoughts: Long ball could carry Ravens to win

NEW ORLEANS (AP) ? Fear the dreadlocks, San Francisco.

Torrey Smith just might be the difference in a Super Bowl that will hinge on the 49ers' ability to prevent the Baltimore Ravens from scoring with the long ball.

You might remember Smith from that playoff game in Denver on Jan. 12. Broncos cornerback Champ Bailey sure does. Bailey, a 12-time Pro Bowl star, watched the dreadlocks flapping from the back of Smith's helmet as he chased the speedy wide receiver into the end zone on touchdown catches of 59 and 32 yards.

Oh, and let's not forget that Baltimore forced overtime in that game on a 70-yard touchdown pass from Joe Flacco to Jacoby Jones with 31 seconds left.

The Ravens have 17 pass completions of at least 40 yards this season, six of them involving Smith. Sometimes, Smith runs deep just to free up wideout Anquan Boldin or tight end Dennis Pitta or running back Ray Rice underneath, leaving Flacco a variety of viable targets.

"It all depends," said Smith, the speedy receiver from Maryland. "It's not like they say, 'Hey Torrey, just run straight down the field' all the time. Some of it is scheme-wise to open other guys up. Against certain coverages, I have certain responsibilities. We do attack vertically. That's a strength of ours, and I'm one of the guys that they definitely use to do that."

Combine all that with a San Francisco defense that gave up 396 yards passing to Atlanta's Matt Ryan in the NFC title game, and it could add up to a very long night for the 49ers.

"Joe Flacco, he's playing excellent football right now," former 49ers star receiver Jerry Rice said. "You've got Torrey Smith and also Anquan Boldin on the outside, and passes over 18 yards. They targeted Torrey Smith 109 times. So they're not afraid to throw the ball deep. The secondary of the San Francisco 49ers, they have had problems with the deep ball, so they can't let these guys run free."

The 49ers know this. Whether they can prevent Smith & Co. from breaking loose is another story. Rice is also a threat ? he caught 61 passes for 478 yards during the regular season.

"I think No. 1, you've got one (receiver) that's got track speed that will take the top off your defense, so he's going to draw some attention," San Francisco cornerback Carlos Rogers said. "Anquan is a very physical guy. He doesn't go deep as much as Torrey, but he's got the ability to. He's just got that connection, strong arm guy, physical guy, so it's going to be a challenge with him, too.

"We're challenged at every position. The tight end in the red zone, he's got a connection, too. Ray Rice out of the backfield, people don't look at that, but when you break down film, he continues to make linebackers look silly and break yards. ... So everybody on our side of the ball has their hands full with those guys."

On the other side of the ball, the Ravens' defense will be poised to hitch their emotions to middle linebacker Ray Lewis for the final stage of his last ride into retirement. The 37-year-old announced before Baltimore's first playoff game that he would quit when the Ravens ended their run, and since that time they've been played their best football of the year.

So has Lewis. He has a team-high 44 tackles during the playoffs after missing the previous 10 games with a torn right triceps.

"They're going to be up," San Francisco running back Frank Gore said. "Ray Lewis means a lot to that organization. He's been playing the game for a long time, he's probably the best at his position and guys love him."

Sure, the Ravens would love to win it for Lewis. But only one player on the roster owns a Super Bowl ring (Lewis), and the rest of the players are in it for themselves.

"There's no way in the world that you can imagine Torrey blocking better down the field because Ray is quitting," Ravens owner Steve Bisciotti said. "There's no way in the world that (fullback) Vonta Leach is going to give that much more, knocking that linebacker in the hole. I believe if Ray was saying he was going to play another year, these guys would give us the same thing."

Ravens offensive linebacker Bobby Williams was asked why the Ravens are going to win.

"The spirit of the team is something special," he said. "Everybody works hard around the league. The 49ers work hard. But the spirit of this team is different."

After thumping Indianapolis at home and outlasting the top-seeded Broncos in double overtime, Baltimore disposed of host New England. Flacco, in succession, outplayed Andrew Luck, Peyton Manning and Tom Brady. Now he goes up against second-year quarterback Colin Kaepernick, who is fleet of foot but short on experience.

Unless Kaepernick runs wild or connects repeatedly with Randy Moss, the self-proclaimed "greatest receiver ever to play this game," then big brother John Harbaugh will be the one smiling when shaking hands with little brother Jim, San Francisco's coach, as purple and black confetti falls from the roof of the Superdome.

PREDICTION: Ravens 24, 49ers 20.

Source: http://news.yahoo.com/deep-thoughts-long-ball-could-carry-ravens-win-012256931--nfl.html

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Israel playing down Syria's threats of retaliation

BEIRUT (AP) ? An Israeli air attack staged in Syria this week may be a sign of things to come.

Israeli military officials appear to have concluded that the risks of attacking Syria are worth taking when compared to the dangers of allowing sophisticated weapons to reach Hezbollah guerrillas in neighboring Lebanon.

With Syrian President Bashar Assad's grip on power weakening, Israeli officials fear he could soon lose control over his substantial arsenal of chemical and advanced weapons, which could slip into the hands of Hezbollah or other hostile groups. These concerns, combined with Hezbollah's own domestic problems, mean further military action could be likely.

Tzachi Hanegbi, an incoming lawmaker in Prime Minister Benjamin Netanyahu's Likud Party and a former chairman of parliament's influential foreign affairs and defense committee, signaled Thursday that Israel could be compelled to act on its own. While Israel's preference is for Western powers to gain control over Syria's arms stockpile, he said there are no signs of that happening.

"Israel finds itself, like it has many times in the past, facing a dilemma that only it knows how to respond to. And it could well be that we will reach a stage where we will have to make decisions," Hanegbi told Israel's Army Radio Thursday. Hanegbi, like other Israeli officials, would not confirm Israeli involvement in the airstrike.

In this week's incident, Israeli warplanes conducted a rare airstrike inside Syria, according to U.S. officials who said the target was a convoy carrying anti-aircraft weapons bound for Hezbollah, the powerful Lebanese militant group allied with Syria and Iran.

The Syrian military has denied the existence of any weapons shipment and said a military research facility outside Damascus was hit.

On Thursday, Syria threatened to retaliate, while Hezbollah condemned the attack as "barbaric aggression." Iran, which supplies arms to Syria, Hezbollah and the Hamas militant group in Gaza, said the airstrike would have significant implications for Israel. Syrian ally Russia said it appeared to be an unprovoked attack on a sovereign nation.

Syria's ambassador to Lebanon, Ali Abdul-Karim Ali, said Damascus "has the option and the capacity to surprise in retaliation." He told Hezbollah's al-Ahd news website that it was up to the relevant authorities to choose the time and place.

For now, Israeli officials seem to be playing down the threats.

"Israel took a big gamble out of the belief that Iran and Hezbollah won't retaliate. The question is, 'Are they right or not?'" said Moshe Maoz, a professor emeritus at Hebrew University who specializes in Syria.

Officials believe that Assad's position in Syria is so precarious that he cannot risk opening a new front with Israel. With an estimated 60,000 Syrians killed in the civil war, Israeli officials also think it's too late for Assad to rally his bitterly divided nation behind him.

"Syria is in such a bad state right now that an Israeli retaliation to a Syrian action would be harsh and could topple the regime. Therefore Syria is not responding," Maoz said.

Israel is far more worried about the threat of sophisticated weapons reaching Hezbollah. In a monthlong 2006 war, Hezbollah fired some 4,000 rockets and missiles into Israel before the conflict ended in a stalemate. Israeli officials believe the guerrilla group has restocked its arsenal with tens of thousands of missiles, some capable of striking deep inside the Jewish state.

Resigned to this fact, Israel has set a number of "red lines" for Hezbollah that it says are unacceptable, in particular the acquisition of new weapons that it believes would change the balance of power in the region. These include chemical weapons and sophisticated anti-aircraft and surface-to-sea missiles.

This week's airstrike targeted trucks containing Russian-made SA-17 anti-aircraft missiles, according to a U.S. official. The trucks were next to the military research facility identified by the Syrians, and the strike hit both the trucks and the facility, said the official, who spoke on condition of anonymity because he was not authorized to speak about the operation.

If the SA-17s were to have reached Hezbollah, they would have greatly inhibited the Israeli air force's ability to operate in Lebanon. Israel has frequently flown sorties over Lebanese skies since 2006.

The airstrike is part of an Israeli strategy known to military planners as "the policy of prevention," or the "war between wars." In recent years, Israel is believed to have launched a number of covert missions, including airstrikes in Sudan and assassinations of key Hezbollah and Hamas militants, aimed at disrupting the flow of weapons to its Iranian-backed enemies. Israel has never acknowledged involvement.

Israeli security officials believe that Hezbollah, despite its claims of victory, is still deterred by the experience of the 2006 war, in which it lost hundreds of fighters. Instead of a direct war, Israel fears Hezbollah might try to strike Israeli or Jewish targets around the world. Israel has accused Hezbollah of a string of attacks on Israeli targets in recent years, including a deadly attack on Israeli tourists in Bulgaria last July.

The Israeli airstrike comes at a particularly sensitive and vulnerable time for Hezbollah in Lebanon. Despite its formidable weapons arsenal and political clout in the country, the group's credibility and maneuvering space has been significantly reduced in the past few years.

Hezbollah still suffers from the fallout of the 2006 war, which many in Lebanon accused it of provoking by kidnapping soldiers from the border area. Since then, the group has come under increasing pressure at home to disarm, leading to sectarian tensions between its Shiite supporters and Sunnis from the opposing camp that have often spilled into deadly street fighting.

When Hezbollah sent an Iranian-made reconnaissance drone over Israel in November, the group boasted of its capabilities ? but critics in Lebanon slammed it for embarking on a unilateral adventure that could provoke Israel.

Despite persistent reports and accusations that Hezbollah members are fighting alongside the military in Syria, Hezbollah has largely approached the Syria conflict with caution, mindful that any action it takes could backfire.

"In different times, Hezbollah would have reacted to Israel's surgical strike, but not today," said Bilal Saab, director of the Institute for Near East and Gulf Military Analysis, North America. "This is a time for hunkering down and weathering the storm."

The uprising in Syria, the main transit point of weapons brought from Iran to Hezbollah, presents the group with its toughest challenge since its inception in 1982.

The group could still get weapons, but would struggle to get them as easily without the Syria supply route. Hezbollah leader Sheik Hassan Nasrallah's public support for the Assad regime has proved costly and the group's reputation has taken a severe beating. Former champions of the group now describe it as hypocritical for supporting Arab Spring uprisings in Tunisia, Libya and Egypt, but not in Syria.

As for Israel and Syria, although they are bitter enemies, they have avoided direct conflict for most of the past 40 years. Israel has been careful to stay out of Syria's civil war, not wanting to be seen as supporting any side in the conflict.

While the attack overnight Tuesday, believed to be the first by Israel on Syrian soil since 2007, appeared to come out of nowhere, signs of impending action were evident in recent days.

On Jan. 23, the day after national elections, Netanyahu convened top security officials for an emergency meeting to discuss the situation in Syria.

One of the meeting participants, Vice Premier Silvan Shalom, warned this week that Israel could be forced to carry out a pre-emptive attack under certain circumstances. The same day, Israel suddenly moved a new, state-of-the-art rocket-defense system to the northern city of Haifa, which was hit hard by Hezbollah rocket fire during a 2006 war.

Uzi Rabi, a military analyst at Tel Aviv University's Dayan Center, said the attack was a "kind of message" sent by Israel to Syria and Hezbollah.

"It says we do have capabilities when it comes to intelligence gathering ... and this would serve as kind of a warning sign to Hezbollah not to transfer chemical weaponry from Syria to Hezbollah," he said.

___

Federman reported from Jerusalem.

Source: http://news.yahoo.com/israel-may-feel-strike-syria-again-211039801.html

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