Phys.org news tagged with:mathematical modelling
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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.Scientists shed light on powerful currents that create massive underwater canyonsThrough the use of mathematical models, Stanford researchers have better defined the powerful processes that carved some of the largest canyons on Earth, deep under the oceans.
http://phys.org/news/2016-04-scientists-powerful-currents-massive-underwater.html
Earth Sciences Mon, 04 Apr 2016 07:54:59 EDTnews378975291Now researchers can follow the hectic life inside a cellLiving cells are constantly on the move. They move around and divide, and they are responsible for transporting molecules around inside themselves. Now SDU researchers have developed a method that makes it possible to become a spectator at this hectic traffic. The method is of particular importance for disease research.
http://phys.org/news/2016-03-hectic-life-cell.html
Cell & Microbiology Mon, 14 Mar 2016 10:49:50 EDTnews377171367Kuiper Belt objects point the way to Planet 9On January 20th, 2016, researchers Konstantin Batygin and Michael E. Brown of Caltech announced that they had found evidence that hinted at the existence of a massive planet at the edge of the Solar System. Based on mathematical modeling and computer simulations, they predicted that this planet would be a super-Earth, two to four times Earth's size and 10 times as massive. They also estimated that, given its distance and highly elliptical orbit, it would take 10,000 – 20,000 years to orbit the Sun.
http://phys.org/news/2016-03-kuiper-belt-planet.html
Space Exploration Mon, 14 Mar 2016 09:46:43 EDTnews377167592Using statistics to predict rogue wavesScientists have developed a mathematical model to derive the probability of extreme waves. This model uses multi-point statistics, the joint statistics of multiple points in time or space, to predict how likely extreme waves are.
http://phys.org/news/2016-03-statistics-rogue.html
General Physics Fri, 11 Mar 2016 02:38:38 EDTnews376886298Search narrows for Planet NineUS astronomers announced last month they may have found a ninth planet beyond Neptune, but conceded they had no idea where on an estimated 10,000-20,000-year orbit it might be.
http://phys.org/news/2016-02-narrows-planet.html
Astronomy Tue, 23 Feb 2016 13:47:37 EDTnews375457643Researchers document new approach to dealing with uncertainties in mathematical modelsMathematical models are used to predict just about everything from traffic and weather to plant metabolism and industrial biotechnology.
http://phys.org/news/2016-02-document-approach-uncertainties-mathematical.html
Mathematics Mon, 22 Feb 2016 14:15:25 EDTnews375372918Turning the volume of gene expression up and downGene expression can be turned on and off like a switch, or it can be finely adjusted , as with a volume control knob. Dr Garth Ilsley, research scientist in Prof. Nick Luscombe's unit at the Okinawa Institute of Science and Technology Graduate University (OIST), has developed a mathematical model that shows how to predictably tune gene expression. This was validated experimentally using a technique for adjusting gene expression in fruit fly embryos pioneered by Dr Justin Crocker in the group of Dr David Stern at Janelia Research Campus in the U.S. This study, published in Nature Genetics, has important implications in cellular and developmental biology, with potential applications in stem cell reprogramming and regenerative medicine.
http://phys.org/news/2016-02-volume-gene.html
Biotechnology Mon, 08 Feb 2016 11:00:13 EDTnews374148927Snake gait: Science observes nature to invent new ways of movingIt has no wheels or legs or anything to help itself along, and yet it is able to move and to move quite fast. In terms of mobility, the snake is a masterpiece of engineering, and it is no coincidence that it should be studied to uncover the physics underlying its locomotion.
http://phys.org/news/2016-02-snake-gait-science-nature-ways.html
Plants & Animals Fri, 05 Feb 2016 09:49:47 EDTnews373888179Russian scientists blow up ice to test their theoriesSupposing that a week ago, the air temperature was about zero, what is the best, safest method to blow up ice on rivers? What is the best way to plant explosives in conditions of low temperature when spring ice will not melt? The mechanics of Tomsk State University (TSU) have left their warm laboratories to test their methods in practice.
http://phys.org/news/2016-02-russian-scientists-ice-theories.html
Earth Sciences Thu, 04 Feb 2016 05:34:49 EDTnews373786488Weather applications of mathematical statisticsThe application possibilities seem to be endless when it comes to mathematical statistics. Several of the researchers at the department work with issues related to weather, climate and environment – Igor Rychlik and David Bolin are two of them.
http://phys.org/news/2016-01-weather-applications-mathematical-statistics.html
Earth Sciences Fri, 29 Jan 2016 12:10:01 EDTnews373288633Do the math—why some people are jerks yet others are even nice to strangersWhy are some people always jerks? Yale University psychologists have developed a mathematical model that provides an answer, and also helps to explain why the rest of us are usually nice, even to strangers.
http://phys.org/news/2016-01-mathwhy-people-jerks-nice-strangers.html
Social Sciences Tue, 12 Jan 2016 05:31:22 EDTnews371799072How two-tone cats get their patches comes to light in cell studyScientists have discovered how the distinctive piebald patches seen in black and white cats and some horses are formed in the womb.
http://phys.org/news/2016-01-two-tone-cats-patches-cell.html
Cell & Microbiology Wed, 06 Jan 2016 06:01:10 EDTnews371282463Modeling Amazonian transitional forest micrometeorologyWhat can mathematical modeling teach us about the micrometeorology of the southern Amazonian 'transitional' forest? Quite a lot, it turns out. This particular forest is located between the rain forest of the Amazon Basin and the tropical Brazilian Savanna, so it plays a crucial role in both regional and global biogeochemical cycling.
http://phys.org/news/2015-12-amazonian-transitional-forest-micrometeorology.html
Mathematics Tue, 29 Dec 2015 12:15:22 EDTnews370613701A 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 EDTnews370096761'Freak' ocean waves hit without warning, new research showsMariners have long spoken of 'walls of water' appearing from nowhere in the open seas. But oceanographers have generally disregarded such stories and suggested that rogue waves - enormous surface waves that have attained a near-mythical status over the centuries - build up gradually and have relatively narrow crests.
http://phys.org/news/2015-12-freak-ocean.html
Mathematics Tue, 15 Dec 2015 19:00:02 EDTnews369422159An online game reveals something fishy about mathematical modelsHow can you tell if your mathematical model is good enough? In a new study, researchers from Uppsala University implemented a Turing test in the form of an online game (with over 1700 players) to assess how good their models were at reproducing collective motion of real fish schools. The results are published in Biology Letters.
http://phys.org/news/2015-12-online-game-reveals-fishy-mathematical.html
Mathematics Tue, 01 Dec 2015 19:00:02 EDTnews368210329Town planners underestimate the importance of urban green spacesCompact towns with high population density can have social, environmental, and economic benefits. The supply of high-density urban housing has increased, but people continue to choose to live in suburbs and commuter towns. The result is continued "urban sprawl" and longer commuting times.
http://phys.org/news/2015-11-town-planners-underestimate-importance-urban.html
Environment Thu, 26 Nov 2015 10:12:18 EDTnews367755131Study suggests carbon content of temperate forests overestimatedDigital measurements of millions of trees indicate that previous studies likely overestimate the amount of carbon stored by temperate U.S. forests, according to a new NASA study.
http://phys.org/news/2015-11-carbon-content-temperate-forests-overestimated.html
Environment Tue, 24 Nov 2015 17:05:07 EDTnews367607096Using '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 EDTnews367054673Ketchup and traffic jams—the maths of soft matterThe class of materials known as soft matter—which includes everything from mayonnaise to molten plastic—is the subject of the inaugural lecture by Michael Cates, Cambridge's Lucasian Professor of Mathematics.
http://phys.org/news/2015-11-ketchup-traffic-jamsthe-maths-soft.html
Condensed Matter Tue, 03 Nov 2015 08:29:47 EDTnews365761684Research reveals how global warming will impact Earth's carbon cycleA research review by University of Exeter climate scientist, Professor Pierre Friedlingstein, examines how state-of-the-art mathematical modelling can help clarify carbon cycle sensitivity to climate change.
http://phys.org/news/2015-10-reveals-global-impact-earth-carbon.html
Environment Thu, 22 Oct 2015 09:50:01 EDTnews364725220Learning from ants how to build transportation networksUsing mathematical modeling and field data, researchers at the mathematics department at Uppsala University have found the basic rules that allow ants to build efficient and low cost transport networks without discarding robustness. The study is now published in the Royal Society journal Interface.
http://phys.org/news/2015-10-ants-networks.html
Plants & Animals Wed, 21 Oct 2015 03:15:27 EDTnews364616118How chickens walk holds clues to how they spread diseasePlotting on a grid just how a chicken walks may one day give farmers more insight into how best to protect their flock from non-airborne pathogens that can also hurt their profit.
http://phys.org/news/2015-10-chickens-clues-disease.html
Mathematics Mon, 19 Oct 2015 11:56:57 EDTnews364474609Predictive policing substantially reduces crime in Los Angeles during months-long testA new study by a UCLA-led team of scholars and law enforcement officials suggests the answer is yes. A mathematical model they devised to guide where the Los Angeles Police Department should deploy officers, led to substantially lower crime rates during a recent 21-month period.
http://phys.org/news/2015-10-policing-substantially-crime-los-angeles.html
Mathematics Wed, 07 Oct 2015 12:32:39 EDTnews363439950New gene drive technology evokes hopes and fearsThe idea of introducing a novel gene into a few individuals that then spreads through an entire population sounds like a premise for science fiction. And yet fiction can be prophetic.
http://phys.org/news/2015-10-gene-technology-evokes.html
Biotechnology Fri, 02 Oct 2015 06:43:19 EDTnews362986926You're not irrational, you're just quantum probabilistic: Researchers explain human decision-making with physics theoryThe next time someone accuses you of making an irrational decision, just explain that you're obeying the laws of quantum physics.
http://phys.org/news/2015-09-youre-irrational-quantum-probabilistic-human.html
Quantum Physics Mon, 14 Sep 2015 11:05:33 EDTnews361447517Tuberculosis video game battles world's oldest diseaseA new video game from Abertay University students and University of St Andrews scientists is taking on humanity's oldest disease, tuberculosis.
http://phys.org/news/2015-08-tuberculosis-video-game-world-oldest.html
Software Thu, 27 Aug 2015 09:30:02 EDTnews359884166How maths can help explain the workings of our brainGiven that advanced mathematical training is critical for helping to solve some of the most challenging questions about the brain works, why are there so few mathematical neuroscientists?
http://phys.org/news/2015-08-maths-brain.html
Mathematics Fri, 21 Aug 2015 07:10:04 EDTnews359359231Human 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 EDTnews358585133Mathematical kinetics model accurately depicts grain-level corrosion plaguing metal alloysA core concern for any structural material is maintaining a prolonged, effective service life. Notably, critical metal alloy failures typically initiate beyond the naked eye, where intergranular (between the grains) oxidation combines with stress corrosion, causing cracks. Even worse, these corrosive attacks ultimately can result in total metal alloy failure. In their work examining intergranular attack of alloys under hydrothermal conditions, scientists from PNNL's ACMD Division Computational Mathematics group, Physical Sciences Division, and Energy and Environment Directorate developed a mathematical model that is directly comparable to experimental data in predicting how fast oxygen penetrates binary alloys and the resulting depletion of select elements in the materials that leads to failures. Their work reveals insights into oxidation mechanisms at the atomic level that provide a new perspective on ways to improve materials durability.
http://phys.org/news/2015-08-mathematical-kinetics-accurately-depicts-grain-level.html
Materials Science Fri, 07 Aug 2015 07:09:31 EDTnews358150163