Phys.org news tagged with:mathematical equations
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en-usPhys.org internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine.USU ecologists propose new method to probe population growth questionsBy developing an innovative series of mathematical equations, Utah State University ecologists are shedding light on a stalemate that's vexed population biologists' understanding of why some organisms adapt and flourish, while others decline.
http://phys.org/news/2016-07-usu-ecologists-method-probe-population.html
Ecology Fri, 15 Jul 2016 05:44:23 EDTnews387780243An equation to quantify the origins of life on other planets(Phys.org)—A pair of researchers, one with the Columbia Astrobiology Center in New York, the other with the University of Glasgow in the U.K. has come up with a mathematical equation that when solved is meant to offer a means for estimating how often life begins on other planets. In their paper published in Proceedings of the National Academy of Sciences, Caleb Scharf and Leroy Cronin describe their equation, how they came up with it and why they believe it might become more useful as scientists learn more about the true nature of other planets and solar systems.
http://phys.org/news/2016-07-equation-quantify-life-planets.html
Astronomy Tue, 05 Jul 2016 09:45:07 EDTnews386930686Walking and talking behaviors may help predict epidemics and trendsMobile phone data may reveal an underlying mathematical connection between how we move and how we communicate that could make it easier to predict how diseases—and even ideas—spread through a population, according to an international team of researchers.
http://phys.org/news/2016-06-behaviors-epidemics-trends.html
General Physics Mon, 06 Jun 2016 15:00:02 EDTnews384442234The mysterious biomechanics of riding – and balancing – a bicycleHumans have been riding bicycle-like machines for close to 200 years, beginning with the Draisine or "velocipede" in 1817.
http://phys.org/news/2016-02-mysterious-biomechanics-bicycle.html
Engineering Thu, 25 Feb 2016 07:46:58 EDTnews375608800A mathematical model for animal stripesThe back of a tiger could have been a blank canvas. Instead, nature painted the big cat with parallel stripes, evenly spaced and perpendicular to the spine. Scientists don't know exactly how stripes develop, but since the 1950s, mathematicians have been modeling possible scenarios. In Cell Systems on December 23, Harvard researchers assemble a range of these models into a single equation to identify what variables control stripe formation in living things.
http://phys.org/news/2015-12-mathematical-animal-stripes.html
Plants & Animals Wed, 23 Dec 2015 12:39:36 EDTnews370096761Princeton honoring memory of mathematician John NashFive months after his remarkable life ended in a crash on a New Jersey highway, Princeton University is paying tribute to John Nash, the Nobel Prize-winning mathematician remembered by colleagues for his brilliance and by millions for the Hollywood movie about him.
http://phys.org/news/2015-10-princeton-honoring-memory-mathematician-john.html
Mathematics Sun, 18 Oct 2015 15:54:06 EDTnews364402439Molecular trick alters rules of attraction for non-magnetic metalsScientists have demonstrated for the first time how to generate magnetism in metals that aren't naturally magnetic, which could end our reliance on some rare and toxic elements currently used.
http://phys.org/news/2015-08-molecular-non-magnetic-metals.html
General Physics Wed, 05 Aug 2015 13:00:03 EDTnews357987653Stanford engineers team up with US Army to set computational recordStanford engineers have partnered with the U.S. Army Research Laboratory (ARL) to set a computational record. Stanford Professor Charbel Farhat and his research team at the Army High Performance Computing Research Center (AHPCRC) used a new, high-end, massively parallel computer to demonstrate the power of algorithms that instruct processors to work together to solve challenging problems.
http://phys.org/news/2015-06-stanford-team-army.html
Computer Sciences Thu, 11 Jun 2015 06:00:41 EDTnews353221230Mathematics reveals how fluid flow affects bacteriaResearchers from the University of Liverpool have used mathematical equations to shed new light on how flowing fluid hinders the movement of bacteria in their search for food.
http://phys.org/news/2015-04-mathematics-reveals-fluid-affects-bacteria.html
Mathematics Tue, 28 Apr 2015 09:52:27 EDTnews349433541American mathematicians Nash, Nirenberg win Abel math prizeAmerican mathematicians John F. Nash Jr. and Louis Nirenberg have won this year's Abel Prize in mathematics.
http://phys.org/news/2015-03-american-mathematicians-nash-nirenberg-abel.html
Mathematics Wed, 25 Mar 2015 08:39:14 EDTnews346491547When it comes to nuclear disaster, safety really is in numbersThe safety of nuclear plants, as well as the medical management of acute radiation syndrome, could soon be dramatically improved thanks to a new mathematical equation developed by Japan's Nuclear Safety Research Centre.
http://phys.org/news/2015-03-nuclear-disaster-safety.html
Energy & Green Tech Thu, 12 Mar 2015 07:30:15 EDTnews345364205Optimized application of high intensity focused ultrasoundThe field of nonlinear acoustics is currently receiving a lot of attention, thanks to applications focused on the improvement of ultrasonic cleaning, ultrasonic welding, sonochemistry, or thermotherapy. Lithotripsy – the demolition of kidney stones based on the use of high intensity focused ultrasound – represents a further medical field of application.
http://phys.org/news/2015-02-optimized-application-high-intensity-focused.html
Mathematics Tue, 10 Feb 2015 09:30:06 EDTnews342782154Best of Last Week: Questioning Higgs finding, possible alternative to antibiotics and reversing diabetes in mice(Phys.org) —It was an interesting week for physics—an international team of researchers openly questioned whether the particle discovered last year was truly the Higgs boson, since as they note, there is no conclusive evidence that it really was. Also, two physicists with USC suggested that maybe string field theory could be the foundation of quantum mechanics—providing a basis for all of physics and perhaps answering the question of where quantum mechanics actually comes from. And another team of physicists proposed the identification of a gravitational arrow of time—they've taken time out of mathematical equations used to describe the total energy of the universe allowing them to split equations that describe the evolution of the universe into two parts.
http://phys.org/news/2014-11-week-higgs-alternative-antibiotics-reversing.html
Other Mon, 10 Nov 2014 09:00:02 EDTnews334827863From smart grids to flying robots, engineer finds many applications for theoryThe future of electricity involves a "smart" grid, in which the energy distribution system is fully computerized, with sensors and wireless devices monitoring remote parts of the system and communicating with a central operations center. Automated technology can then adjust and control the components of the grid to improve its efficiency and manage the integration of renewable energy sources.
http://phys.org/news/2014-11-smart-grids-robots-applications-theory.html
Engineering Mon, 03 Nov 2014 07:08:10 EDTnews334220877Insightful mathematics for an optimal run: Mathematical equations can help improve athletic performanceSure, we can become better runners by hydrating well, eating right, cross training, and practice. But getting to an optimal running strategy with equations? That's exactly what a pair of mathematicians from France propose in a paper published this month in the SIAM Journal on Applied Mathematics.
http://phys.org/news/2014-10-insightful-mathematics-optimal-mathematical-equations.html
Mathematics Mon, 27 Oct 2014 10:01:43 EDTnews333622896Adding uncertainty to improve mathematical modelsMathematicians from Brown University have introduced a new element of uncertainty into an equation used to describe the behavior of fluid flows. While being as certain as possible is generally the stock and trade of mathematics, the researchers hope this new formulation might ultimately lead to mathematical models that better reflect the inherent uncertainties of the natural world.
http://phys.org/news/2014-09-adding-uncertainty-mathematical.html
Mathematics Mon, 29 Sep 2014 16:36:51 EDTnews331227369A mathematical theory proposed by Alan Turing in 1952 can explain the formation of fingersAlan Turing, the British mathematician (1912-1954), is famous for a number of breakthroughs, which altered the course of the 20th century. In 1936 he published a paper, which laid the foundation of computer science, providing the first formal concept of a computer algorithm. He next played a pivotal role in the Second World War, designing the machines which cracked the German military codes, enabling the Allies to defeat the Nazis in several crucial battles. And in the late 1940's he turned his attention to artificial intelligence and proposed a challenge, now called the Turing test, which is still important to the field today.
http://phys.org/news/2014-07-mathematical-theory-alan-turing-formation.html
Cell & Microbiology Thu, 31 Jul 2014 14:00:03 EDTnews326031856Maths can make the internet 5-10 times fasterMathematical equations can make Internet communication via computer, mobile phone or satellite many times faster and more secure than today. Results with software developed by researchers from Aalborg University in collaboration with the US universities the Massachusetts Institute of Technology (MIT) and California Institute of Technology (Caltech) are attracting attention in the international technology media.
http://phys.org/news/2014-07-maths-internet-faster.html
Telecom Thu, 17 Jul 2014 07:50:01 EDTnews324798671Strange physics turns off laserInspired by anomalies that arise in certain mathematical equations, researchers have demonstrated a laser system that paradoxically turns off when more power is added rather than becoming continuously brighter.
http://phys.org/news/2014-06-strange-physics-laser.html
Optics & Photonics Tue, 17 Jun 2014 12:11:55 EDTnews322225896Why Einstein will never be wrongOne of the benefits of being an astrophysicist is your weekly email from someone who claims to have "proven Einstein wrong". These either contain no mathematical equations and use phrases such as "it is obvious that..", or they are page after page of complex equations with dozens of scientific terms used in non-traditional ways. They all get deleted pretty quickly, not because astrophysicists are too indoctrinated in established theories, but because none of them acknowledge how theories get replaced.
http://phys.org/news/2014-01-einstein-wrong.html
General Physics Tue, 14 Jan 2014 13:52:53 EDTnews308929959Explained: MatricesAmong the most common tools in electrical engineering and computer science are rectangular grids of numbers known as matrices. The numbers in a matrix can represent data, and they can also represent mathematical equations. In many time-sensitive engineering applications, multiplying matrices can give quick but good approximations of much more complicated calculations.
http://phys.org/news/2013-12-matrices.html
Computer Sciences Fri, 06 Dec 2013 09:30:02 EDTnews305543519Mathematical equation could reduce traffic jams(Phys.org) —New research has found traffic jams and accidents could be reduced by controlling the reaction times of robotic cars.
http://phys.org/news/2013-11-mathematical-equation-traffic.html
Mathematics Wed, 06 Nov 2013 05:17:32 EDTnews302937422Imaging electron pairing in a simple magnetic superconductorIn the search for understanding how some magnetic materials can be transformed to carry electric current with no energy loss, scientists at the U.S. Department of Energy's Brookhaven National Laboratory, Cornell University, and collaborators have made an important advance: Using an experimental technique they developed to measure the energy required for electrons to pair up and how that energy varies with direction, they've identified the factors needed for magnetically mediated superconductivity-as well as those that aren't.
http://phys.org/news/2013-07-imaging-electron-pairing-simple-magnetic.html
Superconductivity Sun, 14 Jul 2013 13:00:09 EDTnews293009429Researchers reveal model of Sun's magnetic fieldResearchers at the Universities of Leeds and Chicago have uncovered an important mechanism behind the generation of astrophysical magnetic fields such as that of the Sun.
http://phys.org/news/2013-05-reveal-sun-magnetic-field.html
Astronomy Wed, 22 May 2013 13:00:05 EDTnews288435797From eardrums to electromagnetics, researcher hears the problemsA good tool is both robust and accurate; it doesn't break down easily, or give faulty readings or results. This standard applies to everything from a bathroom scale, or vending machine to a sniper rifle. It also rings true for computer code. Industry and agencies use computer code to design products and test research in the digital realm. It cuts down and time and cost, and can allow a design to be tested in a variety of conditions. Teams of scientists and engineers at companies are dedicated to implementing codes that work efficiently and represent reality—codes that are robust and accurate. But sometimes, they get stuck.
http://phys.org/news/2013-04-eardrums-electromagnetics-problems.html
Computer Sciences Wed, 24 Apr 2013 08:12:50 EDTnews286009961On the origins of the Schrodinger equation(Phys.org) —One of the cornerstones of quantum physics is the Schrödinger equation, which describes what a system of quantum objects such as atoms and subatomic particles will do in the future based on its current state. The classical analogies are Newton's second law and Hamiltonian mechanics, which predict what a classical system will do in the future given its current configuration. Although the Schrödinger equation was published in 1926, the authors of a new study explain that the equation's origins are still not fully appreciated by many physicists.
http://phys.org/news/2013-04-schrodinger-equation.html
Quantum Physics Mon, 08 Apr 2013 11:30:01 EDTnews284638321A model predicts that the world's populations will stop growing in 2050Global population data spanning the years from 1900 to 2010 have enabled a research team from the Autonomous University of Madrid to predict that the number of people on Earth will stabilise around the middle of the century. The results, obtained with a model used by physicists, coincide with the UN's downward forecasts.
http://phys.org/news/2013-04-world-populations.html
Social Sciences Thu, 04 Apr 2013 10:49:51 EDTnews284291377What is behind Einstein's turbulences? Calculations give initial insight into relativistic properties of this process(Phys.org) —The American Nobel Prize Laureate for Physics Richard Feynman once described turbulence as "the most important unsolved problem of classical physics", because a description of the phenomenon from first principles does not exist. This is still regarded as one of the six most important problems in mathematics today. David Radice and Luciano Rezzolla from the Max Planck Institute for Gravitational Physics (Albert Einstein Institute/AEI) in Potsdam have now taken a major step toward solving this problem: For the first time, a new computer code has provided relativistic calculations that give scientists a better understanding of turbulent processes in regimes that can be found in astrophysical phenomena.
http://phys.org/news/2013-04-einstein-turbulences-insight-relativistic-properties.html
General Physics Wed, 03 Apr 2013 16:21:47 EDTnews284224873Researchers use attenuation between cell towers to measure rainfall(Phys.org)—Researchers in the Netherlands have devised a means to use the attenuation that results with radio signals when rain falls between cellular towers, to measure the amount of rain that falls in an area. In their paper published in Proceedings of the National Academy of Sciences, the team describes how they were able to use cell phone tower data to create an accurate map of rainfall across the Netherlands twice over 12 day periods in 2011.
http://phys.org/news/2013-02-attenuation-cell-towers-rainfall.html
Earth Sciences Tue, 05 Feb 2013 06:50:01 EDTnews279268279Generating, sustaining electrical currents with unique properties for information processing closer to realitySpintronics is a form of signal processing similar to that used in traditional electronics, but it takes advantage of a property of electrons known as spin. Spin is often visualized as an arrow about which the electron rotates, much like a top spinning around its axis. Generating a stream of electrons in which these 'arrows' are all parallel—a so-called spin-polarized current (see image)—is the foundation upon which spintronics is based. Imperfections in a material, however, can easily destroy polarization. Simply applying an oscillating voltage across the device could help to maintain a spin-polarized current even in the presence of impurities, according to theoretical research by Seng Ghee Tan at the A*STAR Data Storage Institute, Singapore, and co‐workers.
http://phys.org/news/2013-01-sustaining-electrical-currents-unique-properties.html
General Physics Wed, 30 Jan 2013 06:40:01 EDTnews278749622