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en-usPhys.org provides the latest news on mathematics, math, math science, mathematical science and math technology. Data 'hashing' improves estimate of the number of victims in databasesResearchers from Rice University and Duke University are using the tools of statistics and data science in collaboration with Human Rights Data Analysis Group (HRDAG) to accurately and efficiently estimate the number of identified victims killed in the Syrian civil war.
https://phys.org/news/2018-06-hashing-victims-databases.html
Mathematics Tue, 05 Jun 2018 09:45:45 EDTnews447410733Math sheds light on how living cells 'think'How does the 'brain' of a living cell work, allowing an organism to function and thrive in changing and unfavourable environments?
https://phys.org/news/2018-05-math-cells.html
Mathematics Wed, 02 May 2018 09:36:29 EDTnews444472580Longest straight-line ocean path on planet Earth calculatedA pair of researchers, one with United Technologies Research Center, the other with IBM Research, has developed an algorithm that can be used to determine the longest straight-line path over water on Earth. In their paper uploaded to the arXiv preprint server, Rohan Chabukswar and Kushal Mukherjee describe their algorithm and what it revealed.
https://phys.org/news/2018-05-longest-straight-line-ocean-path-planet.html
Mathematics Wed, 02 May 2018 08:59:25 EDTnews444470260Amateur mathematician partially solves 60-year-old problemProfessional biologist and amateur mathematician Aubrey de Grey has partially solved the Hadwiger-Nelson problem, which has vexed mathematicians since 1950. He has published a paper describing the solution on the arXiv preprint server.
https://phys.org/news/2018-04-amateur-mathematician-partially-year-old-problem.html
Mathematics Tue, 24 Apr 2018 09:10:23 EDTnews443779197New study improves 'crowd wisdom' estimatesIn 1907, a statistician named Francis Galton recorded the entries from a weight-judging competition as people guessed the weight of an ox. Galton analyzed hundreds of estimates and found that while individual guesses varied wildly, the median of the entries was surprisingly accurate and within one percent of the ox's real weight. When Galton published his results, he ushered the theory of collective intelligence, or the "wisdom of crowds," into the public conscience.
https://phys.org/news/2018-04-crowd-wisdom.html
Mathematics Wed, 18 Apr 2018 09:07:15 EDTnews443261228Mathematicians devise new model to study response of endovascular aneurysm sealingResearchers at the University of Liverpool have developed a mathematical model that has the potential to improve the performance of endovascular aneurysm sealing (EVAS), which is an innovative procedure to treat abdominal aortic aneurysms (AAA).
https://phys.org/news/2018-04-mathematicians-response-endovascular-aneurysm.html
Mathematics Mon, 09 Apr 2018 07:25:15 EDTnews442477505Cracked it! Experts find answer to the knuckle-popping puzzle (Update)It has puzzled scientists for over 100 years but now they appear to have cracked it: what, exactly, is it that causes that wince-inducing sound when you pop your knuckles?
https://phys.org/news/2018-03-experts-knuckle-popping-puzzle.html
Mathematics Thu, 29 Mar 2018 10:15:24 EDTnews441537316Mathematicians invent tool to judge when voting maps have been unfairly drawnIn 1812, the governor of Massachusetts, Elbridge Gerry, approved a narrow and winding voting district for the state senate that curved from Marblehead around to Salisbury. It looked like a long-necked salamander, Federalist newspaper editors declared. They labeled the district "The Gerry-Mander," and the Salem-Gazette warned that it was a "monster brought forth to swallow and devour your Liberties and equal Rights."
https://phys.org/news/2018-03-mathematicians-tool-voting-unfairly-drawn.html
Mathematics Wed, 21 Mar 2018 15:06:01 EDTnews440863547Calculating tsunami's size and destructive force by exploiting high-speed acoustic gravity wavesMathematicians have devised a way of calculating the size of a tsunami and its destructive force well in advance of it making landfall by measuring fast-moving underwater sound waves, opening up the possibility of a real-time early warning system.
https://phys.org/news/2018-01-tsunamis.html
Mathematics Wed, 24 Jan 2018 09:45:14 EDTnews436009497Modern math sheds new light on long-standing debate about Viking-age Ireland conflictModern mathematical techniques - similar to those used to analyse social-networking websites - have allowed academics to shed new light on a centuries old debate surrounding the Viking age in Ireland and the famous battle of Clontarf in 1014.
https://phys.org/news/2018-01-modern-math-long-standing-debate-viking-age.html
Mathematics Tue, 23 Jan 2018 19:00:04 EDTnews435951955Vision, sensory and motor testing could predict best batters in baseballNew research from Duke Health suggests baseball scouts looking for a consistent, conscientious hitter may find clues not only in their performance on the field, but also in front of a computer screen.
https://phys.org/news/2018-01-vision-sensory-motor-batters-baseball.html
Mathematics Mon, 08 Jan 2018 05:00:02 EDTnews434605441How Facebook could stop a disease outbreakFacebook accounts and telephone records can be used to pinpoint the best individuals to vaccinate to stop a disease outbreak in its tracks, researchers said Wednesday.
https://phys.org/news/2018-01-facebook-disease-outbreak.html
Mathematics Wed, 03 Jan 2018 03:26:10 EDTnews434172363Maths for midges that pull 10gMidges move with ferocious randomness, frequently subjecting themselves to accelerations of more than 10g, well beyond the limit of fighter pilots, as they duck and dive in swarms that still retain an almost paradoxical cohesiveness despite blustery wind or powerful updrafts.
https://phys.org/news/2018-01-maths-midges-10g.html
Mathematics Tue, 02 Jan 2018 19:00:01 EDTnews434121548Randomness a key in spread of disease, other 'evil'An unfortunate church dinner more than 100 years ago did more than just spread typhoid fever to scores of Californians. It led theorists on a quest to understand why many diseases - including typhoid, measles, polio, malaria, even cancer - take so much longer to develop in some affected people than in others.
https://phys.org/news/2018-01-randomness-key-disease-evil.html
Mathematics Tue, 02 Jan 2018 12:50:29 EDTnews434119821Statistical test relates pathogen mutation to infectious disease progressionNucleic acid sequencing methods, which determine the order of nucleotides in DNA fragments, are rapidly progressing. These processes yield large quantities of sequence data—some of which is dynamic—that helps researchers understand how and why organisms function like they do. Sequencing also benefits epidemiological studies, such as the identification, diagnosis, and treatment of genetic and/or contagious diseases. Advanced sequencing technologies reveal valuable information about the time evolution of pathogen sequences. Because researchers can estimate how a mutation behaves under the pressure of natural selection, they are thus able to predict the impact of each mutation—in terms of survival and propagation—on the fitness of the pathogen in question. These predictions lend insight to infectious disease epistemology, pathogen evolution, and population dynamics.
https://phys.org/news/2017-12-statistical-pathogen-mutation-infectious-disease.html
Mathematics Thu, 28 Dec 2017 15:56:06 EDTnews433697657Mathematical model reveals solution to sloshing coffeeAmericans drink an average of 3.1 cups of coffee per day; for many people, the popular beverage is a morning necessity. When carrying a liquid, common sense says to walk slowly and refrain from overfilling the container. But when commuters rush out the door with coffee in hand, chances are their hastiness causes some of the hot liquid to slosh out of the cup. The resulting spills, messes, and mild burns undoubtedly counteract coffee's savory benefits.
https://phys.org/news/2017-12-mathematical-reveals-solution-sloshing-coffee.html
Mathematics Thu, 21 Dec 2017 17:22:47 EDTnews433099357Mathematical model mimics melanomaCancer cells' ability to tolerate crowded conditions may be one key to understanding tumor growth and formation, according to a mathematical model that has been applied to cancer cell growth for the first time. The model can replicate patterns of melanoma cell growth seen in laboratory experiments by controlling the 'exclusion area'—the amount of space required—around two types of simulated cells as they grow and spread. A paper describing the model and experiments appears in a recent issue of the journal Scientific Reports.
https://phys.org/news/2017-12-mathematical-mimics-melanoma.html
Mathematics Fri, 01 Dec 2017 08:29:11 EDTnews431339335How to cut your lawn for grasshoppersPicture a grasshopper landing randomly on a lawn of fixed area. If it then jumps a certain distance in a random direction, what shape should the lawn be to maximise the chance that the grasshopper stays on the lawn after jumping?
https://phys.org/news/2017-11-lawn-grasshoppers.html
Mathematics Wed, 22 Nov 2017 02:07:02 EDTnews430538808Mathematician's study of 'swarmalators' could direct future scienceHow does the Japanese tree frog figure into the latest work of noted mathematician Steven Strogatz? As it turns out, quite prominently.
https://phys.org/news/2017-11-mathematician-swarmalators-future-science.html
Mathematics Fri, 17 Nov 2017 18:05:52 EDTnews430164338New paper answers causation conundrumIn a new paper published in a special issue of the Philosophical Transactions of the Royal Society A, SFI Professor Jessica Flack offers a practical answer to one of the most significant, and most confused questions in evolutionary biology—can higher levels of organization drive the behavior of lower-level components?
https://phys.org/news/2017-11-paper-causation-conundrum.html
Mathematics Fri, 17 Nov 2017 09:30:04 EDTnews430132461Researchers use 3-D printers to turn century-old theory into complex schwarzitesRice University engineers are using 3-D printers to turn structures that have until now existed primarily in theory into strong, light and durable materials with complex, repeating patterns.
https://phys.org/news/2017-11-d-printers-century-old-theory-complex.html
Mathematics Thu, 16 Nov 2017 12:47:06 EDTnews430058808Paradoxical persistence of all negative growths from reformulation of Markowitz theoremAn improvement on the famous Markowitz theorem may have the potential to not only more accurately predict the next financial crises, but also the outbreak of pests and diseases, or whether a patient will have a heart attack in two hours or not.
https://phys.org/news/2017-11-paradoxical-persistence-negative-growths-reformulation.html
Mathematics Tue, 07 Nov 2017 12:12:44 EDTnews429279153Six degrees of separation: Why it is a small world after allIt's a small world after all - and now science has explained why. A study conducted by the University of Leicester and KU Leuven, Belgium, examined how small worlds emerge spontaneously in all kinds of networks, including neuronal and social networks, giving rise to the well-known phenomenon of "six degrees of separation".
https://phys.org/news/2017-10-degrees-small-world.html
Mathematics Thu, 19 Oct 2017 10:23:13 EDTnews427627381Scientists see order in complex patterns of river deltasRiver deltas, with their intricate networks of waterways, coastal barrier islands, wetlands and estuaries, often appear to have been formed by random processes, but scientists at the University of California, Irvine and other institutions see order in the apparent chaos.
https://phys.org/news/2017-10-scientists-complex-patterns-river-deltas.html
Mathematics Thu, 19 Oct 2017 02:32:20 EDTnews427599131How close to invisible can a mirror be?(Phys.org)—In 2011, mathematicians Alexander Plakhov and Vera Roshchina proved that objects with mirror surfaces cannot be perfectly invisible. Now in a new study, Plakhov has returned to the problem, asking just how close to invisible a mirror-surfaced object can be.
https://phys.org/news/2017-10-invisible-mirror.html
Mathematics Fri, 06 Oct 2017 09:30:03 EDTnews426479218A beautiful wing design solution inspired by owl feathersMany species of owl are able to hunt without being heard by their prey by suppressing the noise of their wings at sound frequencies above 1.6 kilohertz (kHz)—including the range at which human hearing is most sensitive.
https://phys.org/news/2017-09-beautiful-wing-solution-owl-feathers.html
Mathematics Wed, 27 Sep 2017 02:24:12 EDTnews425697842The math of doughnuts: 'Moonshine' sheds light on elliptic curvesMathematicians have opened a new chapter in the theory of moonshine, one which begins to harness the power of the pariahs - sporadic simple groups that previously had no known application.
https://phys.org/news/2017-09-math-doughnuts-moonshine-elliptic.html
Mathematics Fri, 22 Sep 2017 05:00:01 EDTnews425266650Mathematicians ask: What's in a ripple?When a fluid or a gas experiences a sudden disturbance, such as a change in pressure or elevation, it often gives rise to a phenomenon known as an undular bore, which consists of a series of rapid oscillations that propagate and spread.
https://phys.org/news/2017-09-mathematicians-ripple.html
Mathematics Wed, 20 Sep 2017 09:54:59 EDTnews425120076Mathematical mystery of ancient Babylonian clay tablet solvedUNSW Sydney scientists have discovered the purpose of a famous 3700-year old Babylonian clay tablet, revealing it is the world's oldest and most accurate trigonometric table, possibly used by ancient mathematical scribes to calculate how to construct palaces and temples and build canals.
https://phys.org/news/2017-08-mathematical-mystery-ancient-babylonian-clay.html
Mathematics Thu, 24 Aug 2017 14:00:06 EDTnews422781203Mathematical model helps explain C. elegans decision-making processThe C. elegans roundworm sees by eating, sucking in big gulps of bacteria to learn about its surrounding environment. As researchers watched, they noticed an odd pattern marked by "bursts" of eating.
https://phys.org/news/2017-08-mathematical-elegans-decision-making.html
Mathematics Thu, 17 Aug 2017 07:00:07 EDTnews422171425