Phys.org news tagged with:mathematics
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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.Understanding nature's patterns with plasmasPatterns abound in nature, from zebra stripes and leopard spots to honeycombs and bands of clouds. Somehow, these patterns form and organize all by themselves. To better understand how, researchers have now created a new device that may allow scientists to study patterns in 3-D like never before.
http://phys.org/news/2016-08-nature-patterns-plasmas.html
Plasma Physics Tue, 23 Aug 2016 11:00:02 EDTnews391159329Scientists conduct mathematical analysis of a rare cavernicolous crustaceanA scientific collaboration of researchers from the Lomonosov Moscow State University and the Smithsonian Institution has discovered previously unknown regularities of arthropod limbs based on studies of the remipede Speleonectes tulumensis, a rare crustacean found in saline waters of caves. The results of the research have been published in PeerJ, an open-access interdisciplinary journal.
http://phys.org/news/2016-08-scientists-mathematical-analysis-rare-cavernicolous.html
Archaeology & Fossils Mon, 22 Aug 2016 07:42:46 EDTnews391070535Mathematicians reveal reasons why the level of poverty in European countries changesOihana Aristondo, a researcher at the UPV/EHU-University of the Basque Country, has succeeded in expressing the poverty index of a country using a mathematical formula based on three variables. She has reported on her results in the International Journal of Approximate Reasoning. Aristondo has analysed the change in the levels of poverty between 2005 and 2011 in 25 European countries and has indicated what caused this change—variation in the number of poor people, intensity of poverty and the differences between poor people.
http://phys.org/news/2016-08-mathematicians-reveal-poverty-european-countries.html
Mathematics Tue, 16 Aug 2016 07:40:01 EDTnews390551490New insights into the evolution of cooperation in spatially structured populationsResearchers have analyzed a new mathematical model to investigate how a population's spatial structure affects the evolution of cooperation. Jorge Peña of the Max Planck Institute for Evolutionary Biology in Plön, Germany, and colleagues describe the model in a new study in PLOS Computational Biology.
http://phys.org/news/2016-08-insights-evolution-cooperation-spatially-populations.html
Social Sciences Thu, 11 Aug 2016 14:20:01 EDTnews390140826Improving computer graphics with quantum mechanicsCaltech applied scientists have developed a new way to simulate large-scale motion numerically using the mathematics that govern the universe at the quantum level.
http://phys.org/news/2016-07-graphics-quantum-mechanics.html
Quantum Physics Thu, 28 Jul 2016 07:01:13 EDTnews388908059Early controlled use of fire may have led to emergence of tuberculosis(Phys.org)—A small team of researchers with the University of New South Wales and Monash University, both in Australia, has developed a theory that suggests tuberculosis may have evolved into a disease as a result of the use of controlled fire by early humans. In their paper published in Proceedings of the National Academy of Sciences, the team describes how they came up with the theory and then tested it using mathematical modeling in conjunction with evolutionary genetics, epidemiology and paleontology.
http://phys.org/news/2016-07-early-emergence-tuberculosis.html
Evolution Tue, 26 Jul 2016 08:30:01 EDTnews388735244Student shows how diagrams can be used to make buildings energy smartAn Imperial engineering student showcases his equations as a set of beautiful diagrams and describes how they can be used to optimise processes.
http://phys.org/news/2016-07-student-diagrams-energy-smart.html
Engineering Fri, 22 Jul 2016 06:50:02 EDTnews388388098How a little mathematics can help create some beautiful musicSince the time of Pythagoras around 500 BCE, music and mathematics have had an intimate and mutually supportive relationship.
http://phys.org/news/2016-07-mathematics-beautiful-music.html
Mathematics Thu, 21 Jul 2016 07:06:54 EDTnews388303585Can we protect against computers being fingerprinted?Imagine that every time a person goes out in public, they leave behind a track for all to see, so that their behaviour can be easily analysed, revealing their identity.
http://phys.org/news/2016-07-fingerprinted.html
Internet Mon, 18 Jul 2016 06:30:44 EDTnews388042110Researchers chip away at Smale's 7th unsolved problem in mathematics(Phys.org)—How do you arrange a group of points on the surface of a sphere so that all the points are as far apart from each other as possible? With two points, the answer is easy: place them on opposite sides of the sphere, as if they are endpoints of the diameter. With three points, make them the vertices of an equilateral triangle, and so on. But as the number of points increases, so does the difficulty of the problem.
http://phys.org/news/2016-07-chip-smale-7th-unsolved-problem.html
General Physics Fri, 15 Jul 2016 09:30:03 EDTnews387773493USU 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 EDTnews387780243Scientists predict the existence of a new kind of spin liquidA team of physicists at the Okinawa Institute of Science and Technology Graduate University (OIST) has predicted the existence of a new kind of spin liquid. A spin liquid is an exotic phenomenon that intrigues scientists: it is a magnetic material in which the magnetism of the atoms fluctuates continuously between different directions. Their theoretical discovery found confirmation through computer simulation. Notably, this mathematical description of a spin liquid shares important similarities with a gauge symmetry, which is a key element in the way physics describes the world. The researchers, all from OIST Theory of Quantum Matter Unit, published their results in Nature Communications.
http://phys.org/news/2016-07-scientists-kind-liquid.html
General Physics Thu, 14 Jul 2016 07:23:32 EDTnews387699801Indestructible bridges could be realityA new generation of indestructible bridges could be possible, thanks to research from the University of Warwick.
http://phys.org/news/2016-07-indestructible-bridges-reality.html
Mathematics Wed, 13 Jul 2016 12:57:12 EDTnews387633395An 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 EDTnews386930686Researchers create new method for identifying black holesRochester Institute of Technology professors have developed a faster, more accurate way to assess gravitational wave signals and infer the astronomical sources that made them.
http://phys.org/news/2016-06-method-black-holes.html
Astronomy Wed, 29 Jun 2016 15:53:33 EDTnews386434403What drives biological synchrony?Ecologists traditionally attribute population explosions, be they of diseases or animals, to broad environmental conditions. But new data suggest that other factors may drive "synchrony": rapid, widespread rises and falls in populations.
http://phys.org/news/2016-06-biological-synchrony.html
Ecology Thu, 09 Jun 2016 09:20:02 EDTnews384681223Walking 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 EDTnews384442234Scientists experimentally confirm electron model in complex moleculesResearchers from the Institute of Molecular Science and Technologies (ISTM-CNR, Italy), Moscow Institute of Physics and Technology (MIPT), and the University of Milan have experimentally confirmed a model to detect electron delocalization in molecules and crystals. The chemists, whose paper was published in Acta Crystallographica on April 1, 2016, have also illustrated examples of the same approach applied toward obtaining insights into the chemical bonding of a wide variety of systems, from metallorganic compounds to systems of biological relevance.
http://phys.org/news/2016-06-scientists-experimentally-electron-complex-molecules.html
General Physics Fri, 03 Jun 2016 07:31:39 EDTnews384157889Discovering how cyanobacteria form patterns for nitrogen fixationScientists at Universidad Carlos III de Madrid (UC3M) have analyzed the process of nitrogen fixation by cyanobacteria, creating a mathematical model that reveals the patterns they form. In these patterns, approximately one out of 10 cells in cyanobacteria filaments fixes nitrogen, while the remaining nine carry out photosynthesis. These microorganisms are fundamental to life on Earth because they produce much of the planet's oxygen and convert nitrogen into chemical forms that can be used by any life form.
http://phys.org/news/2016-06-cyanobacteria-patterns-nitrogen-fixation.html
Cell & Microbiology Thu, 02 Jun 2016 09:56:23 EDTnews384080065Will computers replace humans in mathematics?Computers can be valuable tools for helping mathematicians solve problems but they can also play their own part in the discovery and proof of mathematical theorems.
http://phys.org/news/2016-06-humans-mathematics.html
Mathematics Thu, 02 Jun 2016 09:33:53 EDTnews384078820Researchers focusing on the fragmentation of plastic wasteFirst discovered by sailors, the masses of plastic debris floating at the center of vast ocean vortices called gyres are today under close scrutiny by scientists. To better understand the fragmentation of microplastics under the effect of light and abrasion by waves, researchers combined physico-chemical analyses with statistical modeling. They were thus able to show that pieces of plastic debris behave in very different ways according to their size. The bigger pieces appear to float flat at the surface of the water, with one face preferentially exposed to sunlight. However, the researchers observed fewer small-sized debris (around 1 mg) than predicted by the mathematical model. Several hypotheses are put forward to explain this lack. The findings were obtained by researchers from CNRS and Université Toulouse III – Paul Sabatier from samples collected during the 7th Continent Expedition. They are published in the journal Environmental Science: Nano on 23 May 2016.
http://phys.org/news/2016-05-focusing-fragmentation-plastic.html
Environment Tue, 24 May 2016 10:00:01 EDTnews383299691A digital Rochester Cloak to fit all sizesUsing the same mathematical framework as the Rochester Cloak, researchers at the University of Rochester have been able to use flat screen displays to extend the range of angles that can be hidden from view. Their method lays out how cloaks of arbitrary shapes, that work from multiple viewpoints, may be practically realized in the near future using commercially available digital devices.
http://phys.org/news/2016-05-digital-rochester-cloak-sizes.html
Optics & Photonics Thu, 19 May 2016 10:00:03 EDTnews382867021How to meet demand in bacterial 'factories'The battle over bacterial resources is coming to an end, thanks to research from the University of Bristol. The study describes a new way to model productivity in bacteria used as mini-factories to produce valuable biological components such as insulin or new man-designed proteins.
http://phys.org/news/2016-05-demand-bacterial-factories.html
Cell & Microbiology Mon, 16 May 2016 06:23:03 EDTnews382598575Math, not skin, may be a better way to help researchers test consumer products, study showsResearchers at the University of Cincinnati (UC) James L. Winkle College of Pharmacy are presenting collaborative research on the use of mathematical methods for understanding the transportation of chemical compounds in biological tissues, like the skin.
http://phys.org/news/2016-05-math-skin-consumer-products.html
Other Tue, 10 May 2016 12:57:51 EDTnews382103860Exploring the mathematical universe, uncovering new worlds along the wayA team of more than 80 mathematicians from 12 countries has begun charting the terrain of rich, new mathematical worlds, and sharing their discoveries on the Web. The mathematical universe is filled with both familiar and exotic items, many of which are being made available for the first time. The "L-functions and Modular Forms Database," abbreviated LMFDB, is an intricate catalog of mathematical objects and the connections between them. Making those relationships visible has been made possible largely by the coordinated efforts of a group of researchers developing new algorithms and performing calculations on an extensive network of computers. The project provides a new tool for several branches of mathematics, physics, and computer science.
http://phys.org/news/2016-05-exploring-mathematical-universe-uncovering-worlds.html
Mathematics Tue, 10 May 2016 00:20:01 EDTnews382030366Do genes express themselves through poetry?A new study from Michigan State University makes inroads in learning to "read" the genome, a key goal of modern biology.
http://phys.org/news/2016-05-genes-poetry.html
Biotechnology Mon, 09 May 2016 11:31:11 EDTnews382012262Researchers find new way to control quantum systemsResearchers from the Department of Applied Mathematics and the Institute for Quantum Computing at the University of Waterloo have developed a versatile new way of controlling quantum systems that can affect the reliability of experiments.
http://phys.org/news/2016-05-quantum.html
Quantum Physics Wed, 04 May 2016 13:40:45 EDTnews381587937Theoretical tiger chases statistical sheep to probe immune system behaviorStudying the way that solitary hunters such as tigers, bears or sea turtles chase down their prey turns out to be very useful in understanding the interaction between individual white blood cells and colonies of bacteria. Reporting their results in the Journal of Physics A: Mathematical and Theoretical, researchers in Europe have created a numerical model that explores this behaviour in more detail.
http://phys.org/news/2016-04-theoretical-tiger-statistical-sheep-probe.html
Mathematics Thu, 28 Apr 2016 19:00:01 EDTnews381077045Girls more anxious about mathematics, STEM subjects compared to boysGlobal studies have shown that women are underrepresented in some science, technology, engineering and mathematics (STEM) subjects and fields. Even in countries with higher gender equality, sex differences in math and technical scores persist. Now, using international data, a team of psychologists from the University of Missouri, the University of California-Irvine and the University of Glasgow in Scotland, have determined that, overall, girls experience negative emotions about mathematics that can result in avoidance of math topics. Often called "mathematics anxiety," scientists believe that several factors other than math performance are resulting in higher mathematics anxiety in girls compared to boys.
http://phys.org/news/2016-04-girls-anxious-mathematics-stem-subjects.html
Social Sciences Thu, 21 Apr 2016 11:53:08 EDTnews380458380Mathematicians use 'Game of Thrones' to highlight the growing importance of network scienceThe wildly popular fantasy HBO TV series 'Game of Thrones' will be returning for its sixth season later this month, and in advance of this a team of US-based researchers have applied a mathematical algorithm to ask the most potent question about the world of Westeros: who exactly is the real main character?
http://phys.org/news/2016-04-mathematicians-game-thrones-highlight-importance.html
Computer Sciences Wed, 13 Apr 2016 08:40:24 EDTnews379755607