Tuesday, December 23, 2008

American Dreams


Ounce upon the time some people have dreams. Another have dreams all the time, that means, are young.
Sleep studies reveal that we are relaxing only when the brain is dreaming, that is few minutes at every quite 120 minutes.
Simple photographic tools give the opportunity to reveal for you part of the dreams!

Merry Christmas for you !


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Friday, October 03, 2008

Wall Street's 'Colossal' Risk Management Failure




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It seems clear that no one really knows what is coming next. Why?

Well, part of the reason is that economists still try to understand markets by using ideas from traditional economics, especially so-called equilibrium theory.

Really understanding what’s going on means going beyond equilibrium thinking and getting some insight into the underlying ecology of beliefs and expectations, perceptions and misperceptions, that drive market swings.

....models of deregulated electricity markets are being developed by a handful of researchers around the world, who see them as the only way of reckoning intelligently with the design of extremely complex deregulated electricity markets, where faith in the reliability of equilibrium reasoning has already led to several disasters, in California, notoriously, and more recently in Texas.

If we’re really going to avoid crises, we’re going to need something more imaginative, starting with a more open-minded attitude to how science can help us understand how markets really work. Done properly, computer simulation represents a kind of “telescope for the mind,” multiplying human powers of analysis and insight just as a telescope does our powers of vision. With simulations, we can discover relationships that the unaided human mind, or even the human mind aided with the best mathematical analysis, would never grasp.

Better market models alone will not prevent crises, but they may give regulators better ways for assessing market dynamics, and more important, techniques for detecting early signs of trouble. Economic tradition, of all things, shouldn’t be allowed to inhibit economic progress.







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Sunday, August 03, 2008

Shipping Costs Start to Crimp Globalization


Mendeleev was one of the founders, in 1869, of the Russian Chemical Society. He worked on the theory and practice of protectionist trade and on agriculture.
...the collapse of world trade talks in Geneva last week also signal that ...
India and China a on opposite position with USA, talking about their own food products market.
"the Canadian investment bank CIBC World Markets, calculates that the recent surge in shipping costs is on average the equivalent of a 9 percent tariff on trade. “The cost of moving goods, not the cost of tariffs, is the largest barrier to global trade today,” the report concluded, and as a result “has effectively offset all the trade liberalization efforts of the last three decades.”"
Last week, efforts to complete what is known as the Doha round of trade talks collapsed in acrimony, dealing a serious blow to tariff reduction. The negotiations, begun in 2001, failed after China and India battled the United States over agricultural tariffs, with the two developing countries insisting on broad rights to protect themselves against surges of food imports that could hurt their farmers.
...the sharp increase in transportation costs has implications for the “just-in-time” system pioneered in Japan and later adopted the world over.
“Despite everything, the American economy is still the biggest Rottweiler on the block,” said Jagdish N. Bhagwati, the author of “In Defense of Globalization” and a professor of economics at Columbia. “But if it’s expensive to get products from there to here, it’s also expensive to get them from here to there.”
....
School of Chemical Engineering and the Energy Center, School of Materials Engineering and the Birck Nanotechnology Center, Purdue University, West Lafayette Indiana 47906, and Institute of Energy Conversion, University of Delaware, Newark, Delaware 19716

Received July 10, 2008

Revised July 17, 2008

Abstract:

The creation of a suitable inorganic colloidal nanocrystal ink for use in a scalable coating process is a key step in the development of low-cost solar cells. Here, we present a facile solution synthesis of chalcopyrite CuInSe2 nanocrystals and demonstrate that inks based on these nanocrystals can be used to create simple solar cells, with our first cells exhibiting an efficiency of 3.2% under AM1.5 illumination. We also report the first solution synthesis of uniform hexagonal shaped single crystals CuInSe2 nanorings by altering the synthesis parameter.



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