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Study: Alternate Walking and Running to Save Energy, Maintain Endurance

By Guest PostFebruary 4, 2013Healthalternate walking, best strategy, bus stop, calculation, conserve energy, data, exoskeletons, goal, human body, human energy costs, hypothesis, leroy long, less energy, maintain endurance, manoj srinivasan, marathon finish line, natural environment, notion, ohio state university, optimize energy, pam frost gorder, physical factor, prosthetic devices, running, save energy, transition region, treadmill

COLUMBUS, Ohio — Forget “slow and steady wins the race.” A new study shows that, at least sometimes, the best way to conserve energy and reach your destination on time is to alternate between walking and running—whether your goal is the bus stop or a marathon finish line.

In the January 30, 2013 issue of the Journal of the Royal Society Interface, researchers examined how people budget their time as they travel on foot to reach a destination at a particular appointed time. The study found that when people have neither too much time nor too little time to reach their destination, they naturally switch back and forth between walking and running, which turns out to be the best strategy for saving energy. (more…)

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…)

IBM Survey Reveals New Type of Energy Concern: Lack of Consumer Understanding

By Guest PostAugust 25, 2011Technology2011 ibm global utility consumer survey, alternative motivation, behavioral economics, behavioral factors, conserve energy, consumers, crucial behavioral patterns, dollar per kwh, enemalta corporation, ibm, malta, michael valocchi, smart grid, social drivers, water services corporation

*Behavioral economics a key factor to realizing the benefits of smarter energy*

ARMONK, N.Y., – 25 Aug 2011: IBM today unveiled findings from its “2011 IBM Global Utility Consumer Survey,” which revealed that many consumers around the globe do not understand the basic unit of electricity pricing and other energy concepts used by energy providers. The company also identified a list of crucial behavioral patterns that have the potential to impact how providers communicate and drive motivation amongst consumers.

IBM surveyed more than 10,000 people across 15 countries to explore the wants and needs of energy consumers worldwide. The findings expose a major gap between what consumers currently know and what they need to know to reduce energy consumption and benefit from smarter energy initiatives. Over 30 percent of those polled, for example, have never heard of the term “dollar per kwh” or the equivalent currency, and more than 60 percent are unaware of smart grids or smart meters. (more…)

Going Green: Berkeley Lab on a Path to Substantially Cut Its Emissions

By Guest PostJune 6, 2011Environmentadvanced light source, berkeley lab, blair horst, carbon cycle 2.0, carbon dioxide, cobbler children have no shoes, conserve energy, cool roofs, energy efficiency technologies, ghg, ghg emissions, global warming, godfather of energy efficiency, greenhouse gas, lawrence berkeley national laboratory, living laboratory, melissa summers, old saying, patrick thorson, president barack obama, site sustainability plan, the molecular foundry

*Energy use intensity is down; sustainability plan would reduce it even further.*

There’s an old saying that the cobbler’s children have no shoes. But at Lawrence Berkeley National Laboratory, whose scientists have pioneered many of the energy efficiency technologies being deployed around the world today, energy conservation is not neglected at home. In fact, a number of homegrown energy-savings technologies are in use at the Lab itself, allowing Berkeley Lab to substantially reduce its energy use intensity and make headway towards achieving significant cuts in its greenhouse gas emissions.

From cool roofs to automated building controls to advanced lighting systems, the Lab has implemented an assortment of measures which has resulted in a 44 percent decline in energy use intensity, or energy usage per square foot, since 1985. And greenhouse gas (GHG) emissions from Berkeley Lab facilities have shrunk by about 5 percent over the last two years. (more…)

Tag Archives: conserve energy

Study: Alternate Walking and Running to Save Energy, Maintain Endurance

How Computers Push on the Molecules They Simulate

IBM Survey Reveals New Type of Energy Concern: Lack of Consumer Understanding

Going Green: Berkeley Lab on a Path to Substantially Cut Its Emissions