Hip-Hop Physics

Electrons dance to a quantum beat in the Hubbard model of solid-state physics.

Brian Hayes in American Scientist:

ScreenHunter_09 Oct. 14 10.03 Mathematical models and computer simulations usually begin as aids to understanding, introduced when some aspect of natural science proves too knotty for direct analysis. Facing an intractable problem, we strip away all the messy details of the real world and build a toy universe, one simple enough that we can hope to master it. Often, though, even the dumbed-down model defies exact solution or accurate computation. Then the model itself becomes an object of scientific inquiry—a puzzle to be solved.

A good example is the Ising model in solid-state physics, which attempts to explain the nature of magnetism in materials such as iron. (I wrote about the Ising model in an earlier Computing Science column; see “The World in a Spin,” September–October 2000.) The Ising model glosses over all the intricacies of atomic structure, representing a magnet as a simple array of electron “spins” on a plain, gridlike lattice. Even in this abstract form, however, the model presents serious challenges. Only a two-dimensional version has been solved exactly; for the three- dimensional model, getting accurate results requires both algorithmic sophistication and major computer power.

More here.



Why do Italians keep voting for Berlusconi?

Anne Applebaum in Slate:

ScreenHunter_08 Oct. 14 09.10 Silvio Berlusconi has been accused of bribery, tax evasion, corruption, and subversion of the press. His wife has left him on the grounds that he consorts with prostitutes and holds orgies at his villa in Sardinia. He makes embarrassing jokes (and then repeats them, as he did with the one about President Barack Obama's “suntan“) and periodically disappears to undergo more plastic surgery. He is at war with the Italian legal establishment, with almost all the journalists who don't work for him, and with the Catholic Church. Last week, the Italian constitutional court lifted his immunity from prosecution, which means Italians can look forward to a whole new series of law suits and scandals.

Yet by far the most interesting thing about the Italian prime minister is this: Italians keep voting for him. The somewhat ragged coalition he leads—Il Popolo della Libertà, the People of Freedom—won a decisive general election victory in 2008 and trounced the opposition in European parliamentary elections in June 2009. Whether or not you agree with his daughter, who says he “will go down in the history books as the longest-serving and most loved leader in the history of the Italian republic,” you cannot argue with the fact that he has been the dominant force in Italian politics since he first became prime minister in 1994. But why?

More here.

Tuesday, October 13, 2009

Oliver Williamson and Elinor Ostrom Win the Nobel in Economics

12nobel-650aLouis Uchitelle on a much deserved prize, in the NYT:

Ms. Ostrom’s work deals in the concept of “commons” shared by a number of people who earn their living from a common resource and have a stake, therefore, in preserving it. Her most recent research has focused on relatively small forests in undeveloped countries. Groups of people share the right to harvest lumber from a particular forest, and so they have a stake in making sure the forest survives.

“When local users of a forest have a long-term perspective, they are more likely to monitor each other’s use of the land, developing rules for behavior,” Ms. Ostrom said in an interview. “It is an area that standard market theory does not touch.”

Often working with her husband, Vincent, 90, who is a professor emeritus at Indiana, Ms. Ostrom concluded in her research that the “tragedy of the commons” was an inaccurate concept. Particularly in 17th- and 18th-century England and Scotland, the concept described villagers’ overgrazing of their herds on the village commons, thereby destroying it as pasture.

The solution often invoked was to convert the commons to private property, on the ground that self-interested owners would protect their pasture land.

“Conservatives used the tragedy of the commons to argue for property rights, and efficiency was achieved as people were thrown off the commons,” said Joseph E. Stiglitz of Columbia University, a Nobel laureate in economics himself. “But the effects of throwing a lot of people out of their livelihood were enormous. What Ostrom has demonstrated is the existence of social control mechanisms that regulate the use of commons without having to resort to property rights.”

Sex, Flies and Videotape: the Secret Lives of Harun Yahya

Yahya_lureHalil Arda in New Humanist:

Yahya is the founder of the Science Research Foundation, an impressive publishing empire that boasts more than 60 websites dedicated to his writings. It provides documentary films and audio recordings in fifteen languages, including Turkish, English, Russian, Amharic and Arabic, and claims to sell more than half a million books a year, including the infamous 850-page, fully illustrated Atlas of Creation, which was sent free in two volumes to dozens of universities, libraries and prominent scientists (including Richard Dawkins) across the world. In painstaking detail, with a mass of photos, graphs and statistics interspersed with verses from the Koran, the Atlas purports to prove that Darwin was utterly mistaken, that each plant and animal was created intact, and that no modification through natural selection ever took place.

Yahya has publicly offered a lucrative prize for anyone who can produce a “transitional fossil” – the lack of which he claims proves evolution to be false. When Dawkins publicly lampooned the research in the Atlas of Creation (he pointed out that one of the photos of a Caddis Fly was in fact a fishing fly, complete with metal hook, stolen from the internet, pictured) labelled Yahya a charlatan on his website, Yahya used his considerable influence and battalion of lawyers to sue for libel and have Dawkins’s website banned in Turkey. This is just one of thousands of cases he has brought before the Turkish courts.

Despite the shoddiness of his science Yahya has found a ready audience among those looking for scientific justification for their rejection of the West. Over the past decades he has served as an adviser to several Turkish politicians, and received endorsements from across the Arab world including Saudi Arabia and Dubai, where his stalls feature prominently at book fairs.

Catching the Wind in Rural Malawi

Kamkwamba_inline_diagram_640x585Maywa Montenegro in Seed:

Fourteen-year-old William Kamkwamba had never heard of windmills, or climate change, for that matter, when he stumbled across a photograph one day and it changed his life forever.

Now 22, Kamkwamba has become something of an international DIY celebrity: He’s spoken at the World Economic Forum, at the Aspen Ideas Festival, and at TED Global—twice. He’s chatted with Al Gore, Bono, and Larry Page. A documentary about his life is currently in the works. But Kamkwamba’s story isn’t really about stardom: It’s about the grit, resourcefulness, and audacity of a young engineer who built a windmill from scrap in his native Malawi and brought power to his home—and eventually lit up every house in the village. It’s told in brilliant detail in The Boy Who Harnessed the Wind, (out now from William Morris) co-authored with journalist Bryan Mealer. Seed editor Maywa Montenegro spoke with Kamkwamba while he was in New York City kicking off a US book tour.

Seed: How did you first get the idea to build a windmill?

William Kamwamba: In 2001, there was drought in Malawi so many people didn’t have enough food. Starting in November, people began starving to death. It was the same year I was supposed to start high school, but in Malawi you pay school fees. My parents couldn’t manage to pay the fees so I was forced to drop out.

In order to keep up with my friends who were going to school, I decided to start reading books at the library. When I was reading, I came across a book that had a picture of a windmill. I thought maybe if I try to build one of these machines, I will be able to pump water for irrigation and then my family would no longer have to go through this hunger problem.

From Liberalism to Social Democracy

AndreasIraGeoffrey Kurtz reviews Andreas Kalyvas and Ira Katznelson's Liberal Beginnings: Making a Republic for the Moderns, in Dissent:

The central political question at stake in this book is whether the liberal tradition contains sufficient resources for its own renewal. In other words, whether the way of thinking about politics pioneered by Adam Smith, Adam Ferguson, Thomas Paine, James Madison, Germaine de Staël, and Benjamin Constant offers the ideas the democratic left needs if it is to rethink its work today. The authors think it does. But in explaining their reasons, they also give us reason to think that it might not.

Kalyvas and Katznelson present a new framework for thinking about the relationship between the liberal and republican traditions in political thought. Debates between liberals and those critics of liberalism who style themselves as “civic republicans” have often been organized around unnecessary dichotomies.

How can we choose between process and substance, the universal and the particular, the individual and the community? We can’t, at least not if we want to think through the demands of a politics that is simultaneously radical and democratic.

Kalyvas and Katznelson’s alternative is to understand the relationship between the two traditions historically. Liberalism, they write, developed from republicanism as a butterfly does from a chrysalis. A cohort of pivotal thinkers between 1750 and 1830 began as republicans and, in trying to construct “a republic for moderns,” ended up inventing modern liberalism and bringing about the end of republicanism as a “freestanding model.”

The Collider, the Particle and a Theory About Fate

Dennis Overbye in the New York Times:

ScreenHunter_07 Oct. 13 14.16 In December, if all goes well, protons will start smashing together in an underground racetrack outside Geneva in a search for forces and particles that reigned during the first trillionth of a second of the Big Bang.

Then it will be time to test one of the most bizarre and revolutionary theories in science. I’m not talking about extra dimensions of space-time, dark matter or even black holes that eat the Earth. No, I’m talking about the notion that the troubled collider is being sabotaged by its own future. A pair of otherwise distinguished physicists have suggested that the hypothesized Higgs boson, which physicists hope to produce with the collider, might be so abhorrent to nature that its creation would ripple backward through time and stop the collider before it could make one, like a time traveler who goes back in time to kill his grandfather.

More here.

How I learned to stop worrying and live with the bomb

Michael Lind in Salon:

Bomb President Obama's Nobel Peace Prize has been justified by some because it draws attention to the goal he endorses of ridding the world of nuclear weapons. I share that goal, but not because nuclear weapons are uniquely horrible — if you're a victim, it makes little difference whether you're killed or maimed by nuclear weapons or conventional weapons, which sometimes can create lingering illnesses and poison the landscape, too. I support the abolition of nuclear weapons because, if it were successful, it would lock in the advantages of the small number of great powers like the U.S. that are capable of building and maintaining first-class conventional militaries.

The goal of American liberal internationalism, since the days of Woodrow Wilson and Franklin Roosevelt, has been what Wilson called “a community of power” — a great power concert whose members collaborate to keep the peace. This is different from the conservative vision of unilateral U.S. hegemony. But whether you think the law should be enforced by a posse or a single sheriff, you want the law officers to be better armed than the law-breakers.

More here.

In Mammals, a Complex Journey to the Middle Ear

Natalie Angier in The New York Times:

Ang Imagine what a dinner conversation would be like if you had decent table manners, but the ears of a lizard. Not only would you have to stop eating whenever you wanted to speak, but, because parts of your ears are now attached to your jaw, you’d have to stop eating whenever you wanted to hear anybody else, as well. With no fork action on your end, your waiter would soon conclude that you were obviously “done working on that” and would whisk your unbreached baked ziti away.

Sometimes it’s the little things in life that make all the difference — in this case, the three littlest bones of the human body. Tucked in our auditory canal, just on the inner side of the eardrum, are the musically named malleus, incus and stapes, each minibone, each ossicle, about the size of a small freshwater pearl and jointly the basis of one of evolution’s greatest inventions, the mammalian middle ear. The middle ear gives us our sound bite, our capacity to masticate without being forced to turn a momentarily deaf ear to the world, as most other vertebrates are. Who can say whether we humans would have become so voraciously verbal if not for the practice our ancestors had of jawboning around the wildebeest spit.

More here.

Subject: Our Marketing Plan

Ellis Weiner in The New Yorker:

ScreenHunter_06 Oct. 13 11.31 Hi, Ellis—

Let me introduce myself. My name is Gineen Klein, and I’ve been brought on as an intern to replace the promotion department here at Propensity Books. First, let me say that I absolutely love “Clancy the Doofus Beagle: A Love Story” and have some excellent ideas for promotion.

To start: Do you blog? If not, get in touch with Kris and Christopher from our online department, although at this point I think only Christopher is left. I’ll be out of the office from tomorrow until Monday, but when I get back I’ll ask him if he spoke to you. We use CopyBuoy via Hoster Broaster, because it streams really easily into a Plaxo/LinkedIn yak-fest meld. When you register, click “Endless,” and under “Contacts” just list everyone you’ve ever met. It would be great if you could post at least six hundred words every day until further notice.

If you already have a blog, make sure you spray-feed your URL in niblets open-face to the skein. We like Reddit bites (they’re better than Delicious), because they max out the wiki snarls of RSS feeds, which means less jamming at the Google scaffold. Then just Digg your uploads in a viral spiral to your social networks via an FB/MS interlink torrent. You may have gotten the blast e-mail from Jason Zepp, your acquiring editor, saying that people who do this sort of thing will go to Hell, but just ignore it.

More here.

The pieces are in place, but no one wants an intifada

Tony Karon in The National:

ScreenHunter_05 Oct. 13 11.24 Mr Obama has certainly not been deterred by failure thus far. His envoy, George Mitchell, is in the region pressing the two sides to begin final-status negotiations, but there is little belief on either side that a peace agreement is possible. Israel’s foreign minister, Avigdor Lieberman, declared that any attempt to reach a final settlement for years to come is misguided and doomed to fail, and the prime minister Benjamin Netanyahu’s senior aide, Uzi Arad, has said much the same.

On the Palestinian side, the president, Mahmoud Abbas, grows ever weaker. His political demise was accelerated last week by Palestinian fury over his decision to sideline the Goldstone report into alleged war crimes during Israel’s invasion of Gaza in January. Fatah has instructed Mr Abbas to stay out of any talks with Mr Netanyahu until the Israelis commit to the settlement freeze demanded by the Obama administration. And his likely successor as the head of Fatah, the imprisoned Marwan Barghouti, says anyone who believes it possible to negotiate peace with the current Israeli government is “delusional”.

Moreover, Mr Obama could soon have more to worry about than the absence of progress. Ominous echoes are everywhere of the conditions that brought about the second Palestinian intifada in 2000, which left thousands dead and destroyed the Oslo peace process.

More here.

Monday, October 12, 2009

Sunday, October 11, 2009

Clausewitz as Educator

Photo_1225_landscape_large Willis G. Regier in The Chronicle of Higher Education:

Vegetius, a Roman writer of the fourth century AD, said, “Let him who desires peace prepare for war.” Carl von Clausewitz sharpened the point: “The fact that slaughter is a horrifying spectacle must make us take war more seriously, but not provide an excuse for gradually blunting our swords in the name of humanity. Sooner or later someone will come along with a sharp sword and hack off our arms.” Darfur has made clear that that is not just a metaphor.

Clausewitz (1780-1831) studied total war. Although he knew nothing of tanks, air forces, or satellite communications, he knew from combat how wars kill, confuse, and terrify. In war studies, expertise matters enormously; he had plenty.

At the age of 12, Clausewitz joined two brothers as cadets in the Prussian army. (Eventually all three became generals.) He fought for Prussia against Napoleon at Jena, was captured, taken to Paris, exchanged, and returned to duty. When Prussia was intimidated into joining Napoleon for his disastrous 1812 campaign, Clausewitz resigned his commission and fought for the czar. In 1815, again with the Prussian army, he fought at Ligny. In 1818 he became director of the Military Academy in Berlin, where he devoted the last 15 years of his life to scholarship. His major work, On War (three volumes of Vom Kriege were published, from 1832 to 1843), was left unfinished at his death.

On War has become something of a classic, often cited, discussed in numerous recent books, seen in the company of Sun Tzu’s Art of War (thought to be circa fourth century BC), and studied in military academies. On War appeals to anyone who wants to see how a general thinks, and to all who suppose that warcraft applies to an office, company, college, or team. Clausewitz himself compared war with commerce and alliances with “a business deal.”

Sunday Poem

Nurse.........................
Veronica’s face is not like the face on the veil.
It has seen much suffering but it does not wear

last judgment or a crown of thorns. I have seen blood

on her uniform (which happens to be violet today
……………………..

but is often white), sometimes fresh splashes of it

leaked from an IV or, barely visible, dry specks.
…………………….

I have observed firsthand her unflinching kindness,

and I have thanked any and all the gods for her,
…………………….

and I have wondered at her ability to bear

so many crucifixions all at once.

Susan Kelly-DeWitt