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How Computers Push on the Molecules They Simulate

By Guest PostJanuary 9, 2013Scienceacceleration, albert einstein, algorithm, analytical results, artifacts, atoms and molecules, behavior, Berkeley, berkeley lab, calculation, california, california institute, chemical fuel, collide, computer method, conserve energy, david sivak, digital representation, digitize time, dna repair, driving force, effective friction, energy dense, equation, error, finite time steps, fluid, french physicist, gavin crooks, john chodera, langevin dynamics, model brownian motion, modeling molecular system, modern computer, molecular machines, molecular scale motion, molecule, momentum, natural system, nonequilibrium driving force, nonequilibrium statistical mechanics, particle, passage of time, paul langevin, photosynthesis, pollen grain, qb3, quantitative biosciences, quantum mechanics, real world, simulation, source, tenacious errors, theoretical method, thermal energy, toy models, university, velocity, water, water molecules

Berkeley Lab bioscientists and their colleagues decipher a far-reaching problem in computer simulations

Because modern computers have to depict the real world with digital representations of numbers instead of physical analogues, to simulate the continuous passage of time they have to digitize time into small slices. This kind of simulation is essential in disciplines from medical and biological research, to new materials, to fundamental considerations of quantum mechanics, and the fact that it inevitably introduces errors is an ongoing problem for scientists.

Scientists at the U.S. Department of Energy’s Lawrence Berkeley National Laboratory (Berkeley Lab) have now identified and characterized the source of tenacious errors and come up with a way to separate the realistic aspects of a simulation from the artifacts of the computer method. The research was done by David Sivak and his advisor Gavin Crooks in Berkeley Lab’s Physical Biosciences Division and John Chodera, a colleague at the California Institute of Quantitative Biosciences (QB3) at the University of California at Berkeley. The three report their results in Physical Review X. (more…)

Commerce Guys Taps Microsoft Cloud to Evolve E-Commerce

By Guest PostNovember 7, 2012Technologyann arbor, azure platform, ceo, cloud, commerce framework, commerce guys, database, drupal, ecommerce sales, economic landscape, european headquarter, european summit, france, frederic plais, Microsoft, microsoft bizspark, mike oconnor, one startup, open source, Paris, product, real world, software, sql server, top sommeliers, us headquarter, windows

Microsoft BizSpark One startup helps businesses adapt in a volatile economic landscape.

REDMOND, Wash. — Nov. 7, 2012 — E-commerce sales are expected to top $1.25 trillion by 2013 globally.* However, according to the CEO of Commerce Guys, e-commerce is still in its infancy.

There is a growing opportunity for retailers and merchants using e-commerce, but meeting the needs of a global marketplace presents many challenges. Commerce Guys is working to make it easy with a platform that is flexible and scalable to meet the needs of a variety of customers. (more…)

Interactive Classroom

By Guest PostOctober 28, 2012Educationbuyer, catherine eckel, class, computer generated, dallas, economic scenarios, economics professor, ellen green, equilibrium price, experimental economics, game, interactive, introductory economics, market, markets, personal experience, posted offer, profit maximization, real world, sheryl ball, teaching program, teaching system, Technology, texas, virginia tech, widgets, wireless, wits, wits programs

Economics professor implements Wireless Interactive Teaching System

Ellen Green, a visiting assistant professor of economics in the University of Delaware’s Alfred Lerner College of Business and Economics, is finding new ways to engage students in the classroom instead of simply lecturing.

Green uses a Wireless Interactive Teaching System (WITS) in her introductory economics classes that enables students to act as players in different economic scenarios — they even compete against each other during class. (more…)

Video Games Can Teach How To Shoot Guns More Accurately And Aim For The Head

By Guest PostMay 1, 2012General, Technology9mm, anders behring breivik, brad bushman, bullet, factor, gun, head shots, human target, jodi whitaker, mannequin, modern warfare 2, mw2, nonviolent, norwegian man, pistol, real world, semi automatic pistol, shooting accuracy, video game, violent crimes, violent shooting

COLUMBUS, Ohio – Just 20 minutes of playing a violent shooting video game made players more accurate when firing a realistic gun at a mannequin – and more likely to aim for and hit the head, a new study found.

Players who used a pistol-shaped controller in a shooting video game with human targets had 99 percent more completed head shots to the mannequin than did participants who played other video games, as well as 33 percent more shots that hit other parts of the body. (more…)

University of Missouri Completes First Drought Simulator

By Guest PostAugust 21, 2011Environment, Scienceactual drought conditions, and soil types, bob sharp, bradford research and extension center, cafnr, college of agriculture, commercial crops, crop species, delta research center, drought simulators, droughts, east of columbia, effects of water deficiency on crops, effects on agriculture, famine, farmers, felix fritschi, food and natural resources, food costs, genetics, plant breeding, plant insect and plant disease interaction, plant responses to drought, plant root biology, portageville, real world, real world application of scientific research, soil biology, soil physics, university of missouri, variety of environments, water quality

*Drought simulator will enable in-depth testing under real-world conditions*

COLUMBIA, Mo. – Historically, droughts have had devastating effects on agriculture, causing famine and increasing consumer food costs. Now, researchers at the University of Missouri College of Agriculture, Food and Natural Resources (CAFNR) have completed two drought simulators designed to test the effects of water deficiency on crops. The simulators are located at the University of Missouri’s Bradford Research and Extension Center east of Columbia.

The simulators, part of a $1.5 million Missouri Life Sciences Research Board grant, are essentially mobile greenhouses measuring 50 feet by 100 feet. To simulate drought, researchers move the greenhouses over plants when it is raining and move them away from plants when it is sunny. A test plot of the same plants will be kept next to the simulator to provide a comparison. The drought simulators will increase the real-world application of scientific research, as they allow researchers to more closely mimic actual drought conditions. (more…)

Tag Archives: real world

How Computers Push on the Molecules They Simulate

Commerce Guys Taps Microsoft Cloud to Evolve E-Commerce

Interactive Classroom

Video Games Can Teach How To Shoot Guns More Accurately And Aim For The Head

University of Missouri Completes First Drought Simulator