Sunday, March 3, 2013

Dinosaur-Mail: Postal Service, Prehistoric Pop-Art & Plagiarism

The first postage stamp featuring a prehistoric beast was a stamp from India (1951), celebrating the centenary of the Geological Survey of India it showed the reconstruction of the fossil elephant species Stegodon ganesca. Cuba released a stamp in 1958. Dedicated to the naturalist Carlos de la Torre y Huerta (1858 ? 1950) it shows the giant sloth Megalocnus rodens.
In the same year China issued the very first stamp showing a dinosaur ? the Chinese prosauropod Lufengosaurus. Belgium followed with the more prominent Iguanodon. From there dinosaurs will appear on postage stamps from Poland and San Marino (1965), Congo (1975), Germany (1977), Mongolia and Nicaragua (1987). The U.S. will dedicate four values to Pteranodon, Tyrannosaurus, Brontosaurus and Stegosaurus in 1989.

Fig.1.The small republic of San Marino issued a series of nine values, showing a Brontosaurus, Brachiosaurus, Pteranodon, Elasmosaurus, Tyrannosaurus, Stegosaurus, Thaumatosaurus, Iguanodon and Triceratops -mostly in dull colors (all images ? as images from government documents ? are in public domain).

Fig.2. An interesting series of psychedelic postage stamps from Tanzania (1991), presenting the first (very) colorful dinosaurs.

Fig.3. Many editions of stamps with dinosaurs are intended for the market and collectors ? therefore often more aesthetic appealing than scientific accurate. Sometimes the motif is even simply copied from other artists or publications, like these two specimens, copies from the Saltopus by Jane Burton and the Tyrannosaurus by Doug Henderson.

Fig.4. The first postage stamps showing tracks of dinosaurs were released in Lesotho in 1984.

Fig.5. Evolutionary ladder in a Polish edition, illustrations by artist Andrzej Heidrich (he designed also advertising posters and Polish banknotes).

Fig.6. Not only ?living dinosaurs?? ? a German series (1990) celebrates with dinosaur-skeletons 100 years Museum for Natural History in Berlin.

Fig.7. The Great End?

Bibliography:

THENIUS, E. & VAVRA, N. (1996): Fossilien im Volksglauben und im Alltag ? Bedeutung und Verwendung vorzeitlicher Tier- und Pflanzenreste von der Steinzeit bis heute. Senckenberg-Buch 71, Waldemar Kramer Verlag ? Frankfurt am Main: 179

Source: http://rss.sciam.com/click.phdo?i=993cc25b00fcbeb6023fa30390beb617

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Saturday, March 2, 2013

Play the Slate News Quiz


If you've been following the news closely, I think you could get all 12 of this week's answers right. Unless you just guess C for all of them in honor of C. Everett Koop, who died this week at age 96. That would be a touching tribute to the former surgeon general, but would?I'm warning you right now?lead to a terrible score.

Question 1 of 12

A panel of trademark judges in February affirmed whose exclusive right to be called the "Evil Empire"?

The Yankees objected to a private entrepreneur calling his business "Baseballs [sic] Evil Empire." "There is only one Evil Empire in baseball," agreed the jurists.

Question 2 of 12

More than 100 prominent Republicans have now signed Ken Mehlman's brief in support of what?

The document was submitted in support of a lawsuit seeking to overturn Proposition 8, and analysts say it could make a difference in deciding the case.

Question 3 of 12

Surprised researchers have discovered giant goldfish?some over 4 pounds and measuring 2 feet long?where?

Question 4 of 12

What screen sequel dominated the Razzie awards on Saturday, with seven wins?

Question 5 of 12

An obscure functionary named Miguel Diaz-Canel was chosen out of nowhere Sunday as the heir apparent to which world leader?

Question 6 of 12

Frankenstein, Billy the Kid, and Adolf Hitler got a new lease on life last weekend, with their names appearing where?

Historically famous and infamous names aren't unusual in the Indian state of Meghalaya. "My father added 'Lu' in between ... that's why I am different," said assembly candidate Adolf Lu Hitler.

Question 7 of 12

After more than a century of use, what word will soon be disappearing from U.S. Census Bureau forms and surveys?

Respondents will instead be able to identify themselves as "black" or "African-American."

Question 8 of 12

In a final statement this week, who looked back on "many days of sunshine" as well as "times when the water was rough and the wind"?

Question 9 of 12

FBI assistant director Candice Will told CNN last week about an embarrassing new problem for the bureau, saying, "When you are given an FBI BlackBerry, it's for official use. It's not to" do what?

Will is concerned about a new "rash of sexting" among FBI employees.

Question 10 of 12

Which of these senators supported filibustering Chuck Hagel's nomination as secretary of defense but then, confusingly, voted for Hagel?

Question 11 of 12

The National Salvation Front, an opposition coalition, says it will boycott this spring's elections in which country?

The alliance is protesting new laws that it claims give the Muslim Brotherhood an insuperable electoral advantage over more liberal parties.

Question 12 of 12

Which of these features is Australian tycoon Clive Palmer promising to include on the maiden voyage of his Titanic II replica in 2016?

Passengers will not be able to move between classes, says Palmer, but steerage will be provided with more toilets than they had on the first Titanic.

You got 8 out of 12 answers correct in 20 minutes 30 seconds.

Source: http://feeds.slate.com/click.phdo?i=bb903e9da987c1501e9f6433a81a022a

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Study: High-Skilled Immigrants Are Neither Better Nor Brighter Than U.S. Workers

Green cardWhile America’s political and business elite are pressing Congress to ease high-skilled immigration laws, a new study argues that foreign workers aren’t necessarily better or brighter. “The immigrant workers, especially those who first came to the United States as foreign students, are in general of no higher talent than the Americans, as measured by salary, patent filings, dissertation awards, and quality of academic program,” writes University Of California-Davis professor, Norman Matloff. While technology leaders, such as Bill Gates, often complain that they must bait the best foreign workers with luxurious salaries, Matloff says that data doesn’t back this up. To illustrate just how little big tech companies actually value foreign workers, he presents a graph of the share of percentage of foreign workers that make substantially more than their native colleagues. At Google, for instance, only 12% of foreign workers are making 1.45 times the average worker in their field. Matloff, a noted critic of high-skilled H1-B visa reform, finds that because there is no statistical difference in economic output between foreign and native workers, the idea of a shortage of high-skilled workers is a myth. “One of the industry?s most effective public relations tacks has been to claim that too few Americans major in STEM fields in college,” he argues. Instead, foreign immigrants have saturated the market, pushing science, technology, engineering, and mathematics students onto other career paths. Quoting a study by a team of Berkeley economists, “?high-tech engineers and managers have experienced lower wage growth than their counterparts nationally. ?Why hasn?t the growth of high-tech wages kept up??Foreign students are an important part of the story.” Posh Wall Street jobs for American STEM students are fueling the so-called “diversion” of STEM students away from technology careers. Between 2003 and 2006, the share of MIT grads going into financial services nearly doubled, from 13% to 25%. “If you?re a high math student in America, from a purely economic point of view, it?s crazy to go into STEM,” said Georgetown University researcher Anthony Carnevale. As a result of the overwhelming influx, Matloff argues that foreign immigrants became a kind of “indentured servant,” forced to work for lower pay and less legal protections (a concern also expressed by industry unions). Matloff’s study is sure to take a lot of heat, especially because he doesn’t take into account foreign entrepreneurs, who founded a huge chunk of influential technology corporation, from Google to

Source: http://feedproxy.google.com/~r/Techcrunch/~3/CFjY1uEFjy0/

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Friday, March 1, 2013

NHL drafts the wrong players due to birthday bias

Feb. 27, 2013 ? A hockey player's birthday strongly biases how professional teams assess his talent, according to a new study by Grand Valley State University researchers. The findings were published in the online journal PLOS ONE.

The research, led by Robert Deaner, associate professor of psychology at Grand Valley, shows that, on average, National Hockey League (NHL) draftees born between July and December are much more likely than those born in the first three months of the year to have successful careers. In particular, 34 percent of draftees were born in the last six months of the year, but these individuals played 42 percent of the games and scored 44 percent of the points accumulated by those in the study. By contrast, those born in the first three months of the year constituted 36 percent of draftees but only played 28 percent of the games and only scored 25 percent of the points.

The study focused on Canadian players because in Canadian youth ice hockey there is a January 1 cut-off date. This means players born later in the year would have been consistently younger than their age group peers.

"There's no doubt that drafting professional athletes is an inexact science," said Deaner. "Plenty of sure-fire first-round picks fizzle while some late-round picks unexpectedly become stars. But our results show that, at least since 1980, NHL teams have been consistently fooled by players' birthdays or something associated with them. They greatly underestimate the promise of players born in the second half of the year, the ones who have always been relatively younger than their peers. For any given draft slot, relatively younger players are about twice as likely to be successful. So if teams really wanted to win, they should have drafted more of the relatively younger players."

Background and Significance

Previous studies have demonstrated relative age effects (RAEs), which occur when those who are relatively older for their age group are more likely to succeed. For example, in elite Canadian youth ice hockey, roughly 40 percent of players are born in the first three months of the year while only 15 percent are born in the last three months. Although RAEs are well established in many sports and educational settings, their underlying causes remain unclear. The new study provides the most direct evidence yet that selection bias is a crucial cause of RAEs. Selection bias means that evaluators, such as teachers and coaches, grant fewer opportunities to relatively younger individuals than is warranted by their talent.

"There are many possible causes of RAEs," said Deaner. "For instance, a youth coach may mainly select relatively older players because those players' greater size means they are actually more likely to help the team. Researchers believe, however, that selection bias is also a big cause of RAEs, but there has never been a direct test of selection bias. We could make this test because we had a good measure of perceived talent, the order or slot in which each player was drafted. And we had good measures of realized talent, how long they were able to stay in the NHL and how many points they scored there. Because relatively younger players consistently performed better than would be expected based on their draft slots, we've shown selection bias."

The researchers admit that they don't fully understand the selection bias they discovered. "We don't know yet why the evaluations of NHL teams are biased, but there are several ways it could work. Because being many months older than one's peers can be a big advantage as a child or early teen, the relatively older players might be more likely to be on the most elite junior teams when they are 17 or 18, and scouts might be swayed by that," said Deaner. "Another possibility, suggested by educational studies, is an 'underdog' effect. This would involve relatively younger individuals developing better work habits so that they improve more in adulthood."

The authors believe their pro hockey results have implications for education. Deaner noted: "We have to be careful about assuming too much because a teacher deciding which children should be tracked into advanced classes is a much different situation than hockey teams assessing which adults are likely to develop into NHL stars. But, for many reasons, one would think that NHL teams should be less biased than educators. First, NHL teams are evaluating adults not children, meaning that relative age differences are proportionally smaller. Second, NHL teams are aware of RAEs, but educators may not be. Third, NHL teams have vast resources to evaluate individuals while educators do not. Fourth, NHL teams pay a steep price for poor evaluation whereas educators may not. So overall, in many situations, evaluations of ability may be greatly colored by an individual's relative age. This may even happen when the teachers and coaches know about RAEs."

Co-authors of the study were Aaron Lowen of Grand Valley State University and Steven Cobley of the University of Sydney.

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Story Source:

The above story is reprinted from materials provided by Grand Valley State University.

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


Journal Reference:

  1. Robert O. Deaner, Aaron Lowen, Stephen Cobley. Born at the Wrong Time: Selection Bias in the NHL Draft. PLoS ONE, 2013; 8 (2): e57753 DOI: 10.1371/journal.pone.0057753

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

Disclaimer: This article is not intended to provide medical advice, diagnosis or treatment. Views expressed here do not necessarily reflect those of ScienceDaily or its staff.

Source: http://feeds.sciencedaily.com/~r/sciencedaily/top_news/top_technology/~3/aiKTLbZhmbM/130227183506.htm

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New way to keep PCs cool: Submerge them in goo

The scourge of the hot computer isn't limited to lap-scalding notebooks. The enormous datacenters used by the likes of Facebook and Google generate immense amounts of heat and cost a fortune in air conditioning. But there's a new option: Dip the whole computer in heat-dissipating goo.

Most computers these days are air-cooled with fans. (You can often hear one spinning up if your computer is working hard on a task.)

Higher-end computers such as custom gaming rigs may resort to water cooling, which uses cool water in copper pipes to absorb and whisk away more heat than air alone. Even exotic materials like liquid nitrogen or hydrogen can be used in extreme circumstances.

But those aren't suitable for applying to the thousands of servers in a Facebook datacenter. Unfortunately, the most common solution seems to be huge air-conditioning and venting systems, along with using naturally cool locations ? a solution that could have ecological implications.

A company called Iceotope has what it thinks is the best of both worlds: putting the whole server "blade" (the individual hardware component of a server "farm") inside a container full of a special liquid called Novec. Made by 3M, it's specially engineered to dissipate heat, doing so 20 times faster than water ? and 1,000 times faster than air.

But the key is that Novec doesn't conduct electricity at all, meaning that a computer or any electronic device can sit in it and run, happy as a clam. The researchers who came up with the technique demonstrate the benefits of Novec this in the following video, which shows mobile phones being dunked and functioning perfectly well:

The server works at high capacity and produces lots of heat, which spreads out quickly through the Novec bath. The module's enclosure is made of aluminum, which also conducts heat well, outside of which is an array of running pipes, filled with cool water. This fast-moving water draws out the heat and then gets promptly pumped out.

As a result, the cost of keeping the datacenters cool is massively reduced (and they're quieter, to boot). A "rack" of servers might take several kilowatts of power for its fans and venting, but Iceotope's use only a small fraction of that ? 80 watts or less. And the outgoing water is easier to handle than hot air and could even be used for purposes such as residential heating.

The first to deploy the system is the University of Leeds, which helped test and develop the server modules. They'll be using it to run engineering students' computer models ? and routing the warmed water through radiators to heat the lab.

This sort of system is great for Google and its big-data ilk, but what about consumers? For now, the system is too specialized for use in laptops, or for that matter smartphones, which occasionally also get hot to the touch. It's not out of the question, but this magic liquid will probably take some time to trickle down, so to speak, to ordinary users.

Devin Coldewey is a contributing writer for NBC News Digital. His personal website is coldewey.cc.

Source: http://www.nbcnews.com/technology/futureoftech/new-way-keep-pcs-cool-submerge-them-goo-1C8603909

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The Vatican Just Deleted All of Pope Benedict's Tweets

MADRID, Feb 27 (Reuters) - Lionel Messi has rarely been accused of failing to deliver in big games, having scored in two European Cup finals, but after subdued performances against AC Milan and Real Madrid, questions are being asked. The four-times World Player of the Year and leading scorer in one of the greatest club teams of all time, was a shadow of his usual self at the San Siro in a Champions League last-16 first leg last week, when Barcelona slumped to a 2-0 defeat. ...

Source: http://news.yahoo.com/vatican-just-deleted-pope-benedicts-tweets-201012438.html

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Army GI says he leaked secrets to spark war debate

FILE - In this June 25, 2012 file photo, Army Pfc. Bradley Manning, right, is escorted out of a courthouse in Fort Meade, Md. The Army private charged in the largest leak of classified material in U.S. history says he sent the material to WikiLeaks to enlighten the public about American foreign and military policy on Thursday, Feb. 28, 2013. (AP Photo/Patrick Semansky, File)

FILE - In this June 25, 2012 file photo, Army Pfc. Bradley Manning, right, is escorted out of a courthouse in Fort Meade, Md. The Army private charged in the largest leak of classified material in U.S. history says he sent the material to WikiLeaks to enlighten the public about American foreign and military policy on Thursday, Feb. 28, 2013. (AP Photo/Patrick Semansky, File)

Army Pfc. Bradley Manning, front, is escorted out of a courthouse in Fort Meade, Md., Thursday, Feb. 28, 2013, after a pretrial military hearing. Manning, the Army private arrested in the biggest leak of classified material in U.S. history, pleaded guilty Thursday to charges that could send him to prison for 20 years, saying he was trying to expose the American military's "bloodlust" and disregard for human life in Iraq and Afghanistan. Military prosecutors said they plan to move forward with a court-martial on 12 remaining charges against him, including aiding the enemy, which carries a potential life sentence. (AP Photo/Patrick Semansky)

(AP) ? After almost three years in custody, the Army private accused in the biggest leak of classified material in U.S. history said he did it because he wanted the public to know how the American military was fighting wars in Iraq and Afghanistan with little regard for human life.

Bradley Manning, 25, pleaded guilty Thursday at a military hearing at Fort Meade, Md., to 10 charges that could carry a maximum sentence of 20 years. Prosecutors plan to pursue 12 more charges against him at court-martial, including a charge of aiding the enemy that carries a potential life sentence.

"I began to become depressed at the situation we found ourselves mired in year after year. In attempting counterinsurgency operations, we became obsessed with capturing and killing human targets on lists," the former intelligence analyst in Baghdad told a military judge.

He added: "I wanted the public to know that not everyone living in Iraq were targets to be neutralized."

It was the first time Manning directly admitted leaking the material to the anti-secrecy website WikiLeaks and detailed the frustrations that led him to do it.

The slightly built soldier from Crescent, Okla., read from a 35-page statement through his wire-rimmed glasses for more than an hour. He spoke quickly and evenly, showing little emotion even when he described how troubled he was by what he had seen.

The judge, Col. Denise Lind, accepted his plea to 10 charges involving illegal possession or distribution of classified material. Manning was allowed to plead guilty under military regulations instead of federal espionage law, which knocked the potential sentence down from 92 years.

He will not be sentenced until his court-martial on the other charges is over.

Manning admitted sending hundreds of thousands of Iraq and Afghanistan battlefield reports, State Department diplomatic cables, other classified records and two battlefield video clips to WikiLeaks in 2009 and 2010. WikiLeaks posted some of the material, embarrassing the U.S. and its allies.

He said he was disturbed by the conduct of the wars in Afghanistan and Iraq and the way American troops treated the populace. He said he did not believe the release of the information he downloaded onto a thumb drive would harm the U.S.

"I believed that if the general public, especially the American public, had access to the information ... this could spark a domestic debate on the role of the military and our foreign policy in general," Manning said.

Manning said he was appalled by 2007 combat video of an assault by a U.S. helicopter that killed 11 men, including a Reuters news photographer. The Pentagon concluded the troops mistook the camera equipment for weapons.

"The most alarming aspect of the video to me was the seemingly delightful bloodlust the aerial weapons team happened to have," Manning said, adding that the soldiers' actions "seemed similar to a child torturing ants with a magnifying glass."

As for the State Department cables, he said they "documented backdoor deals and criminality that didn't reflect the so-called leader of the free world."

"I thought these cables were a prime example of the need for a more open diplomacy," Manning said. "I believed that these cables would not damage the United States. However, I believed these cables would be embarrassing."

The battlefield reports were the first documents Manning decided to leak. He said he sent them to WikiLeaks after contacting The Washington Post and The New York Times. He said he felt a reporter at the Post didn't take him seriously, and a message he left for news tips at the Times was not returned.

Times spokeswoman Eileen Murphy said Thursday of the purported phone call: "This is news to us."

The Obama administration has said the release of the documents threatened valuable military and diplomatic sources and strained America's relations with other governments. The administration has aggressively pursued people accused of leaking classified material, and Manning's is the highest-profile case.

Manning has been embraced by some left-leaning activists as a whistle-blowing hero whose actions exposed war crimes and helped trigger the Middle Eastern pro-democracy uprisings known as the Arab Spring in 2010. He has spent more than 1,000 days in custody.

The soldier told the court that he corresponded online with someone he believed to be WikiLeaks founder Julian Assange but never confirmed the person's identity.

WikiLeaks has been careful never to confirm or deny Manning was the source of the documents.

Reached by telephone in Britain on Thursday, Assange would not say whether he had any dealings with Manning but called him a political prisoner and said his prosecution was part of an effort by the U.S. to clamp down on criticism of its military and foreign policy.

Assange himself remains under investigation by the U.S. and has been holed up in the Ecuadorean Embassy in London for the better part of a year to avoid extradition to Sweden on sex-crimes allegations.

___

Associated Press Writer Raphael Satter in London contributed to this report.

___

Follow Ben Nuckols on Twitter at https://twitter.com/APBenNuckols .

Associated Press

Source: http://hosted2.ap.org/APDEFAULT/3d281c11a96b4ad082fe88aa0db04305/Article_2013-03-01-Manning-WikiLeaks/id-62de64a0e08f446a826232e407303d6d

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