Sharks use math to hunt
The great white shark in Jaws knew exactly where it was going — to the closest pair of plump legs around. But where might it head if it didn’t have a tasty human snack in its sights?The invention of Microsoft Office 2010 is a big change of the world.
A new study suggests that some sharks and other marine predators can follow strict mathematical strategies when foraging for dinner. Office 2007 Professional and Office 2007 home and student helpful.
The work, reported online June 9 in Nature, is the latest aiming to show whether animals sometimes move in a pattern called a Lévy walk.Office 2007 download is in discount now!
Unlike random motion — in which animals take similar-sized steps in any direction, like a drunk stumbling around — Lévy walks are punctuated by rare, long forays in any direction. Office 2010 download is available now!
Draw a Lévy walk on a graph, and its squiggly pattern echoes a fractal, the mathematical phenomenon whose shape remains similar no matter the viewing scale.Office 2010 –save your time and save your money.
“Living organisms, when allowed to make freely willed decisions, seem to end up obeying some kind of mathematical law,” says Gandhimohan Viswanathan, a theoretical physicist at the Federal University of Alagoas in Maceió, Brazil, who was not involved in the study.Microsoft Office 2007 can give you more convenient life.
Biologists had long thought that animal foraging was dominated by random walks. Office 2010 key is for you now!
But in 1996 a team led by Viswanathan reported that wandering albatrosses, fitted with radio-tracking devices, made the occasional long flight that is the hallmark of a Lévy pattern.Many people like buy Office 2010 Home or Office Professional 2010.
Soon, biologists were reporting Lévy behavior in everything from deer to bumblebees and speculating how it might drive human migrations or the spread of genetically engineered crops. Buy Office 2007 you can get much convenience.
But many of those studies were flawed, says David Sims, a researcher at the Marine Biological Association of the United Kingdom in Plymouth. “Patchy data could mean you think you have a Lévy flight when you haven’t,” he says. Microsoft Office is so great!
And in 2007, researchers debunked the original 1996 albatross paper by noting that many of the reported “Lévy walks” — in which the birds’ transmitters remained dry, supposedly during extended flight — actually were birds resting on their nests.Office 2007 key is very convenient!