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en-usPhys.org provides the latest news on mathematics, math, math science, mathematical science and math technology. Using 'mood maths' to understand more about bipolar disorderBipolar disorder – formerly known as manic depression – is a chronic, recurrent mental illness characterised by extreme swings in mood. The condition is thought to affect at least one in every 100 adults worldwide and has the highest rate of suicide among psychiatric disorders.
http://phys.org/news/2015-11-mood-maths-bipolar-disorder.html
Mathematics Wed, 18 Nov 2015 07:44:02 ESTnews367054673Mathematical model helps show how zebrafish get their stripesA mathematical model developed by Brown University researchers is shedding new light on how zebrafish get their iconic stripes. The model helps to demonstrate how two dynamic processes—the movement of pigment cells across the skin, and the birth and death of cells as the fish grows—combine to keep zebrafish stripes in line.
http://phys.org/news/2015-11-mathematical-zebrafish-stripes.html
Mathematics Tue, 17 Nov 2015 12:15:15 ESTnews366984898Computer scientist claims to have solved the graph isomorphism problem(Phys.org)—László Babai with the Department of Computer Science and Mathematics at the University of Chicago has caused a lot of excitement in the computer science community by announcing recently during a lecture that he had developed an algorithm that solves the graph isomorphism problem. Though not as well known, it is comparable to someone solving the famous traveling salesmen problem.
http://phys.org/news/2015-11-scientist-graph-isomorphism-problem.html
Mathematics Thu, 12 Nov 2015 09:21:20 ESTnews366542467Scientific research is conservative but could be accelerated, analysis findsInstitutional and cultural pressures lead scientists to avoid risk-taking and choose inefficient research strategies, two new University of Chicago papers conclude. Despite increased opportunities for groundbreaking experiments, most scientists choose conservative research strategies to reduce personal risk, which makes collective discovery slower and more expensive.
http://phys.org/news/2015-11-scientific-analysis.html
Mathematics Mon, 09 Nov 2015 15:00:03 ESTnews366276898Scientists devise new method to solve significant variables conundrumScientists at Columbia University, the University of California, San Diego (UCSD) and Harvard University have presented an alternative method to address the challenge of using significant variables to make useful predictions in areas such as complex disease.
http://phys.org/news/2015-10-scientists-method-significant-variables-conundrum.html
Mathematics Mon, 26 Oct 2015 17:05:31 ESTnews365097921New model developed for research into 'social-ecological systems'A new mathematical model allows researchers to better understand and plan the designs for infrastructure to account for human factors in systems ranging from small-scale agriculture to urban infrastructure.
http://phys.org/news/2015-10-social-ecological.html
Mathematics Wed, 21 Oct 2015 06:36:36 ESTnews364628186New math model represents how mind processes sequential memory, may help understand psychiatric disordersTry to remember a phone number, and you're using what's called your sequential memory. This kind of memory, in which your mind processes a sequence of numbers, events, or ideas, underlies how people think, perceive, and interact as social beings.
http://phys.org/news/2015-10-math-mind-sequential-memory-psychiatric.html
Mathematics Tue, 20 Oct 2015 11:00:15 ESTnews364557603New mathematical method reveals structure in neural activity in the brainA newly-developed mathematical method can detect geometric structure in neural activity in the brain. "Previously, in order to understand this structure, scientists needed to relate neural activity to some specific external stimulus," said Vladimir Itskov, associate professor of mathematics at Penn State University. "Our method is the first to be able to reveal this structure without our knowing an external stimulus ahead of time. We've now shown that our new method will allow us to explore the organizational structure of neurons without knowing their function in advance."
http://phys.org/news/2015-10-mathematical-method-reveals-neural-brain.html
Mathematics Mon, 19 Oct 2015 17:12:59 ESTnews364493571Mathematicians find 'magic key' to drive Ramanujan's taxi-cab numberTaxi-cab numbers, among the most beloved integers in math, trace their origins to 1918 and what seemed like a casual insight by the Indian genius Srinivasa Ramanujan. Now mathematicians at Emory University have discovered that Ramanujan did not just identify the first taxi-cab number - 1729 - and its quirky properties. He showed how the number relates to elliptic curves and K3 surfaces - objects important today in string theory and quantum physics.
http://phys.org/news/2015-10-mathematicians-magic-key-ramanujan-taxi-cab.html
Mathematics Wed, 14 Oct 2015 12:46:11 ESTnews364045533Research pair suggest crowd sourcing could improve social science experiment results(Phys.org)—Social science experiments do not have the best track records—oftentimes, studies are conducted, followed by wild claims which are then either contested or outright refuted by colleagues. There might be a better way Raphael Silberzahn and Eric Uhlmann suggest in an essay piece published in the journal Nature—crowdsourcing.
http://phys.org/news/2015-10-pair-crowd-sourcing-social-science.html
Mathematics Thu, 08 Oct 2015 10:40:04 ESTnews363516795Blog comment, collab help man attack old maths problemChris Cesare in Nature reported on Friday that Terence Tao successfully attacked the Erdős discrepancy problem by building on an online collaboration. Tao is a professor in the math department at UCLA. He works primarily in mathematical areas of harmonic analysis, PDE, geometric combinatorics, arithmetic combinatorics, analytic number theory, compressed sensing, and algebraic combinatorics.
http://phys.org/news/2015-09-blog-comment-collab-maths-problem.html
Mathematics Sat, 26 Sep 2015 14:40:01 ESTnews362496325Researchers determine how groups make decisionsFrom Beats headphones' rise to prominence or a political candidate's surge in the polls to how ants and bees select a new nest site, decisions emerging from groups frequently occur without a leader.
http://phys.org/news/2015-09-groups-decisions.html
Mathematics Fri, 18 Sep 2015 14:00:03 ESTnews361791260NFL fans and ESPN reporters overly optimistic about team prospects, study showsUS fans of the National Football League (NFL) and sports reporters assigned to specific teams have unrealistic expectations about how well their team will perform, finds new research from UCL and Oxford University.
http://phys.org/news/2015-09-nfl-fans-espn-overly-optimistic.html
Mathematics Wed, 09 Sep 2015 14:04:42 ESTnews361026266Fractals 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 ESTnews359959524New 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 ESTnews358574055Human 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 ESTnews358585133Model 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 ESTnews357447315Researchers 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 ESTnews356169971'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 ESTnews354995926Stuck 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 ESTnews354815255Mathematicians 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 ESTnews354174504New 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 ESTnews352919049Game 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 ESTnews350746942Is 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 ESTnews349350118Copying 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 ESTnews348911949Should 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 ESTnews348334434Using 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 ESTnews347015395Researchers 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 ESTnews347009826Quantum 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 ESTnews346586733Mathematicians 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 ESTnews346333776