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en-usPhys.org provides the latest news on mathematics, math, math science, mathematical science and math technology. Fractals patterns in a drummer's musicFractal patterns are profoundly human – at least in music. This is one of the findings of a team headed by researchers from the Max Planck Institute for Dynamics and Self-Organization in Göttingen and Harvard University in Cambridge, Massachusetts following an analysis of the drumming of Jeff Porcaro who played in the band Toto and who many fans believe set new standards. In both the rhythm and the loudness of his hits on the hi-hat, the researchers discovered self-similar patterns with structures in longer periods of time that resemble the structures present in shorter time intervals. People evidently prefer exactly this type of variation: totally precise percussion or hits varied purely at random were perceived as less agreeable. The sequence of our heartbeats also has fractal properties, and too much precision can even be life threatening here.
http://phys.org/news/2015-08-fractals-patterns-drummer-music.html
Mathematics Fri, 28 Aug 2015 05:45:34 EDTnews359959524New model describes cognitive decision making as the collapse of a quantum superstate (Phys.org)—Decision making in an enormous range of tasks involves the accumulation of evidence in support of different hypotheses. One of the enduring models of evidence accumulation is the Markov random walk (MRW) theory, which assigns a probability to each hypothesis. In an MRW model of decision making, when deciding between two hypotheses, the cumulative evidence for and against each hypothesis reaches different levels at different times, moving particle-like from state to state and only occupying a single definite evidence level at any given point.
http://phys.org/news/2015-08-cognitive-decision-collapse-quantum-superstate.html
Mathematics Wed, 12 Aug 2015 09:30:09 EDTnews358574055Human societies think fast and slow in cycles, mathematicians findAs humans have evolved, so has our capacity to think rationally and use resources wisely - right? Not necessarily. According to Cornell research, careful, deliberate decision-making is in constant competition with the more knee-jerk type of behavior.
http://phys.org/news/2015-08-human-societies-fast-mathematicians.html
Mathematics Wed, 12 Aug 2015 07:59:03 EDTnews358585133Model shows how surge in wealth inequality may be reversed(Phys.org)—For many Americans, the single biggest problem facing the country is the growing wealth inequality. Based on income tax data, wealth inequality in the US has steadily increased since the mid-1980s, with the top 10% of the population currently owning about 73% of the country's wealth. In a new paper published in PLOS ONE, researchers have quantitatively analyzed several of the major factors that affect wealth inequality dynamics, and found that the most crucial factor associated with the recent surge in wealth inequality since the '80s has been the dramatic decrease in personal savings, followed closely by a large increase in the dominance of capital income over labor income.
http://phys.org/news/2015-07-surge-wealth-inequality-reversed.html
Mathematics Thu, 30 Jul 2015 09:10:01 EDTnews357447315Researchers develop math model to determine greatness of cities(Phys.org)—A team of life scientists and mathematicians at Imperial College in London has created a series of formulas that together allow for determining what they deem the greatness of a city. In their paper published in Journal of the Royal Society Interface, the team describes the factors they consider to be critical in judging the greatness of a city and the formulas they developed to create a model.
http://phys.org/news/2015-07-math-greatness-cities.html
Mathematics Wed, 15 Jul 2015 09:50:01 EDTnews356169971'Smaller is smarter' in superspreading of influence in social networkA study by City College of New York physicists Flaviano Morone and Hernán A. Makse suggests that "smaller is smarter" when it comes to influential superspreaders of information in social networks. This is a major shift from the widely held view that "bigger is better," and could have important consequences for a broad range of social, natural and living networked systems.
http://phys.org/news/2015-07-smaller-smarter-superspreading-social-network.html
Mathematics Wed, 01 Jul 2015 18:58:57 EDTnews354995926Stuck on you: Research shows fingerprint accuracy stays the same over timeFingerprints have been used by law enforcement and forensics experts to successfully identify people for more than 100 years. Though fingerprints are assumed to be infallible personal identifiers, there has been little scientific research to prove this claim to be true. As such, there have been repeated challenges to the admissibility of fingerprint evidence in courts of law.
http://phys.org/news/2015-06-stuck-fingerprint-accuracy.html
Mathematics Mon, 29 Jun 2015 16:47:41 EDTnews354815255Mathematicians formulate equations, bend light and figure out how to hide thingsThe idea of cloaking and rendering something invisible hit the small screen in 1966 when a Romulan Bird of Prey made an unseen, surprise attack on the Starship Enterprise on Star Trek. Not only did it make for a good storyline, it likely inspired budding scientists, offering a window of technology's potential.
http://phys.org/news/2015-06-mathematicians-equations-figure.html
Mathematics Mon, 22 Jun 2015 06:48:39 EDTnews354174504New theory identifies height-to-base ratio that helped humanity master fire and migrate across the globeFrom ancient Egyptians roasting a dripping cut of beef next to the Great Pyramid of Giza to a Boy Scout learning to build a log cabin fire in his backyard, everyone builds fires with the same general shape. And now we know why.
http://phys.org/news/2015-06-theory-height-to-base-ratio-humanity-master.html
Mathematics Mon, 08 Jun 2015 05:00:03 EDTnews352919049Game intelligence can be learnedNew theories on game intelligence could change the world of team sports forever. Game intelligence is not necessarily something you are born with but something you can learn, according to the authors of the article "Game Intelligence in Team Sports". Co-author and former NHL player Nicklas Lidström embodies the evidence.
http://phys.org/news/2015-05-game-intelligence.html
Mathematics Wed, 13 May 2015 14:42:29 EDTnews350746942Is the universe a hologram?Describing the universe requires fewer dimensions than we might think. New calculations show that this may not just be a mathematical trick, but a fundamental feature of space itself.
http://phys.org/news/2015-04-universe-hologram.html
Mathematics Mon, 27 Apr 2015 10:42:07 EDTnews349350118Copying behavior in social groups may be governed by optimal control theoryNature has provided herding animals and flocking birds with abilities to react to predator attacks and to sense risky features in their environment— like trees or cliffs—that might impede their defense. But how do these abilities work? What's going on inside individual animals and the group as a whole as they protect themselves with coordinated movements?
http://phys.org/news/2015-04-behavior-social-groups-optimal-theory.html
Mathematics Wed, 22 Apr 2015 08:59:23 EDTnews348911949Should a political party form a coalition? Voters and math decideMathematical ideas and tools are often used to describe aspects of large macroscopic systems. Examples abound in areas as varied as finance to psychology. In a paper published last month in the SIAM Journal on Applied Mathematics, author Fabio Bagarello proposes mathematical models to analyze political decision-making. Using a dynamical approach which accounts for interactions between political parties and their constituents, the model tries to deduce whether parties should form coalitions under various circumstances.
http://phys.org/news/2015-04-political-party-coalition-voters-math.html
Mathematics Wed, 15 Apr 2015 16:34:10 EDTnews348334434Using Twitter to probe political polarizationWe'd like to believe that our opinions are nuanced, balanced, high-minded, wise and above all, unique, but alas they are not—or so says Twitter. Most often, those we engage with on the popular social media site are like-minded, and the ensuing electronic maelstrom of 140-character missives most often serves to reinforce, pulling us and them further along in the direction we were already trending toward—so that at the end of the day, we all tweet to the converted.
http://phys.org/news/2015-03-twitter-probe-political-polarization.html
Mathematics Tue, 31 Mar 2015 11:00:01 EDTnews347015395Researchers suggest adding uncertainty to catastrophe models may help predictability(Phys.org)—A small team of researchers with members from Universidad de Granada and Princeton University has found that adding some uncertainty to computer models meant to predict catastrophes such as stock market crashes, rapid desertification of a region, etc. can help make the models better. In their paper published in Proceedings of the National Academy of Sciences, the team describes how they employed mathematical models that allow for adding in randomness to catastrophe prediction models and what they found by doing so.
http://phys.org/news/2015-03-adding-uncertainty-catastrophe.html
Mathematics Tue, 31 Mar 2015 08:50:01 EDTnews347009826Quantum compute this—Mathematicians build code to take on toughest of cyber attacksWashington State University mathematicians have designed an encryption code capable of fending off the phenomenal hacking power of a quantum computer.
http://phys.org/news/2015-03-quantum-thismathematicians-code-toughest-cyber.html
Mathematics Thu, 26 Mar 2015 11:05:46 EDTnews346586733Mathematicians solve 60-year-old problemA team of researchers, led by Rensselaer Polytechnic Institute professor Yuri Lvov, has found an elegant explanation for the long-standing Fermi-Pasta-Ulam (FPU) problem, first proposed in 1953, investigated with one of the world's first digital computers, and now considered the foundation of experimental mathematics.
http://phys.org/news/2015-03-mathematicians-year-old-problem.html
Mathematics Mon, 23 Mar 2015 15:00:01 EDTnews346333776One fractal quantifies another, mathematicians findTo humor mathematicians, picture a pile of sand grains – say, a billion – in one square of a vast sheet of graph paper. If four or more grains occupy a single square, that square topples by sending one grain to each of its four neighboring squares.
http://phys.org/news/2015-03-fractal-quantifies-mathematicians.html
Mathematics Wed, 11 Mar 2015 15:50:39 EDTnews345307827Perfect NCAA bracket? Near impossible, mathematician saysThe odds of picking a perfect bracket for the NCAA men's basketball March Madness championship tournament are a staggering less than one in 9.2 quintillion (that's 9,223,372,036,854,775,808), according to Jeff Bergen, mathematics professor at DePaul University.
http://phys.org/news/2015-03-ncaa-bracket-impossible-mathematician.html
Mathematics Thu, 05 Mar 2015 14:20:33 EDTnews344787617A formula for predicting innovationBy the time she was six years old, Nadya Bliss had already figured out her professional calling. She knew that one day she would be a mathematician.
http://phys.org/news/2015-02-formula.html
Mathematics Sat, 14 Feb 2015 16:47:20 EDTnews343154833Wrinkle predictions: New mathematical theory may explain patterns in fingerprints, raisins, and microlensesAs a grape slowly dries and shrivels, its surface creases, ultimately taking on the wrinkled form of a raisin. Similar patterns can be found on the surfaces of other dried materials, as well as in human fingerprints. While these patterns have long been observed in nature, and more recently in experiments, scientists have not been able to come up with a way to predict how such patterns arise in curved systems, such as microlenses.
http://phys.org/news/2015-02-wrinkle-mathematical-theory-patterns-fingerprints.html
Mathematics Mon, 02 Feb 2015 16:06:02 EDTnews342115553Automated method beats critics in picking great moviesDon't rely on the Academy Awards next month if you are seeking to know whether the movies deemed great today will survive the test of time.
http://phys.org/news/2015-01-automated-method-critics-great-movies.html
Mathematics Mon, 19 Jan 2015 15:00:22 EDTnews340887676Ecosystems need maths not random nature to surviveA previously unknown mathematical property has been found to be behind one of nature's greatest mysteries – how ecosystems survive.
http://phys.org/news/2014-12-ecosystems-maths-random-nature-survive.html
Mathematics Mon, 22 Dec 2014 08:14:08 EDTnews338458434Mathematicians prove the Umbral Moonshine ConjectureMonstrous moonshine, a quirky pattern of the monster group in theoretical math, has a shadow - umbral moonshine. Mathematicians have now proved this insight, known as the Umbral Moonshine Conjecture, offering a formula with potential applications for everything from number theory to geometry to quantum physics.
http://phys.org/news/2014-12-mathematicians-umbral-moonshine-conjecture.html
Mathematics Mon, 15 Dec 2014 11:06:11 EDTnews337863945Assessing scientific research by 'citation wake' detects Nobel laureates' papers(Phys.org)—Ranking scientific papers in order of importance is an inherently subjective task, yet that doesn't keep researchers from trying to develop quantitative assessments. In a new paper, scientists have proposed a new measure of assessment that is based on the "citation wake" of a paper, which encompasses the direct citations and weighted indirect citations received by the paper. The new method attempts to focus on the propagation of ideas rather than credit distribution, and succeeds by at least one significant measure: a large fraction (72%) of its top-ranked papers are coauthored by Nobel Prize laureates.
http://phys.org/news/2014-12-scientific-citation-nobel-laureates-papers.html
Mathematics Fri, 12 Dec 2014 09:10:04 EDTnews337586941Carrot or stick? Game-theory can optimize collaborationWhat motivates people to cooperate in collaborative endeavors? "First carrot, then stick". Tatsuya Sasaki, mathematician from the University of Vienna, has put forth for the first time ever a mathematical proof of this process. The study is recently published online in the Journal of the Royal Society Interface.
http://phys.org/news/2014-12-carrot-game-theory-optimize-collaboration.html
Mathematics Wed, 03 Dec 2014 11:11:32 EDTnews336827486Finding the simple patterns in a complex worldAn ANU mathematician has developed a new way to uncover simple patterns that might underlie apparently complex systems, such as clouds, cracks in materials or the movement of the stockmarket.
http://phys.org/news/2014-12-simple-patterns-complex-world.html
Mathematics Wed, 03 Dec 2014 08:48:15 EDTnews336818882A numbers game: Math helps to predict how the body fights diseaseWalter and Eliza Hall Institute researchers have defined for the first time how the size of the immune response is controlled, using mathematical models to predict how powerfully immune cells respond to infection and disease.
http://phys.org/news/2014-11-game-math-body-disease.html
Mathematics Thu, 27 Nov 2014 14:00:01 EDTnews336315378Passengers boarding airplanes—we're doing it wrong'Tis the season for airplane travel. We may be looking forward to getting where we're going, but most aspects of the travel itself are merely endured. There's stressful security, the madding crowd and the scrum at boarding, where people and their myriad belongings clog the gate area, standing between you and your departure.
http://phys.org/news/2014-11-passengers-boarding-airplaneswere-wrong.html
Mathematics Wed, 26 Nov 2014 08:20:02 EDTnews336206599Risk analysis for a complex worldDeveloping adaptable systems for finance and international relations could help reduce the risk of major systemic collapses such as the 2008 financial crisis, according to a new analysis.
http://phys.org/news/2014-11-analysis-complex-world.html
Mathematics Tue, 18 Nov 2014 10:14:51 EDTnews335528081