Tag: "numerical" at biology news
A new study examines how shared pathogens affect host populations
...abundance of species in the community, without any numerical
or genetic change in the host or pathogen. Studying only the target species or the abiotic environment would not reveal the cause of the epidemic. Their results have not only important consequences for understanding the role of pathogens in species i...
Super predators and mass extinctions
...ipowski (Adam Mickiewicz University) constructed a numerical
model of many species competing for both food and living space. The model also included a term that controls mutation rates, allowing new species to develop over time. The model shows that, much of time, the system is populated with "medium efficienc...
Assessing the Amazon River's sensitivity to deforestation
...rn portion of the basin. By using a combination of numerical
models and data from several disciplines to assess the possible impacts of future human-induced land cover and land use change, researchers are investigating the causes of changes to stream hydrology and biogeochemistry. The Amazon, one of the most ...
Envisat and ERS-2 reveal hidden side of Hurricane Rita
...ge Weather Forecasting (ECMWF) into their advanced numerical
models used for meteorological predictions. "Scatterometer data from the ERS-2 platform provide high-quality wind information in the vicinity of tropical cyclones," states Hans Hersbach of ECMWF. "For a Hurricane like Rita, the combination of such ...
Monkeys understand numbers across senses
... scientists have found. The finding indicates that numerical
perception is truly an abstract concept and not ju...ave a verbal capacity, understand similar abstract numerical
concepts, they said. The researchers, led by Elizabeth Brannon of Duke University and Asif Ghazanfa...
Tropical Deforestation affects rainfall in the U.S. and around the globe
...esearchers caution that their results are based on numerical
simulations performed with a single general circulation model and that reproducing the experiment with other computer models using different atmospheric variables would be beneficial. Current research is attempting to answer why deforestation has suc...
NCAR analysis shows widespread pollution from 2004 wildfires
...ion of observing instruments, computer models, and numerical
techniques that allowed them to distinguish betwee...Tracers). The team confirmed its results by using numerical
techniques to compare simulated concentrations of carbon monoxide in the atmosphere with measurement...
Researchers link ocean organisms with increased cloud cover and potential climate change
...eastern coast of South America. Using complex numerical
models, they estimated that the resulting increase in cloudiness reduced the absorption of sunlight by an amount comparable to what has been measured in highly polluted areas of the globe. If confirmed by field studies, this connection between cloud...
Virginia Tech's System X supercomputer provides super tool for simulation of cell division
... demonstrated that the new mathematical models and numerical
algorithms provide powerful tools for studying the...hematical biologist must figure out how to set the numerical
values of the â€˜parametersâ€™ in the model equations in order to create an accurate representation ...
Ocean's 'twilight zone' may be a key to understanding climate change
...fforts today to improve the predictive capacity of numerical
models that relate ocean carbon to global climate change on different time scales," said Don Rice, director of NSF's chemical oceanography program. It also adds a new wrinkle to proposals to mitigate climate change by fertilizing the oceans with ...
Studies yield insight into the numerical brain
... shed significant light on how the brain processes numerical
information--both abstract quantities and their co...tive information as well as lead to studies of how numerical
representation in the brain develops in children. Such studies could aid in rehabilitating people wh...
University of Alberta researchers unravel intricate animal patterns
...s with the zigzagging type of pattern shown by the numerical
simulations. Or we can think about the anti-predatory behaviour exhibited by some schools of fish--when a predator is nearby, the school contracts in a tight aggregation, to expand again when the predator is gone. And we can try to compare this behav...
Salty oceans provide early warning for climate change
...urred. Using a combination of modern observations, numerical
models and palaeoclimate data scientists are increasingly realising that salt is the key. Their results reveal that a build up of salty water can stimulate deep water circulation, while a diluting of the waters is linked to sluggish flow. “Salt pl...