Researchers have detected at least three instances of cross-species mating that likely influenced the evolutionary paths of “old world” mice, two in recent times and one in the distant past. They think these instances of introgressive hybridization are only the first of many needles waiting to be found in a very large genetic haystack. The finding suggests that hybridization in mammals may not be an evolutionary dead end.
Although there are a diverse range of applications for predictive analytics in R&D, two...
Where did the songbird get its song? What branch of the bird family tree is closer to the...
Communication protocols for digital devices are very efficient but also very brittle: They...
At a White House ceremony on November 20, 2014, President Obama presented the National Medal of Science and National Medal of Technology and Innovation to individuals who have made outstanding contributions to science and engineering. The awards are the nation's highest honors for achievement and leadership in advancing the fields of science and technology.
The introduction of newer sequencing methodologies, DNA microarrays and high-throughput technology has resulted in a deluge of large data sets that require new strategies to clean, normalize and analyze the data. All of these and more are covered in approximately 300 pages with extraordinary clarity and minimal mathematics.
The mathematician, Robert R. Coveyou, said: “The generation of random numbers is too important to be left to chance.” Random numbers are used in sampling, simulations, modeling, data encryption, gambling and even musical composition. A random number is one selected from a set of equally possible values. Any sequence of random numbers must be statistically independent of the others.
It should come as no surprise to readers of this column that JMP is a personal favorite and, along with SAS, one of my most-used programs. There are a number of reasons for this. Of the many advantages that most packages can offer, breadth and depth of the statistics offered, quality of the diagnostics, interconnectivity of graphics with both data and analyses, and ease-of-use issues are uppermost in my mind as most desirable.
Symbion QT 2.5. chemometrics software provides Parametric Data Cleaning, a technique that automates the handling of data compromised by excessive noise or other artifacts. Key cleaning parameters are under the control of the analyst, allowing chemometric optimization under a wide range of analytical situations.
GeneSpring Pathway Architect software is designed to enable faster discovery of complex relationships across multi-omic data. Designed for researchers focused on genomics, proteomics, metabolomics, transcriptomics or any combination of life science disciplines, the package includes GeneSpring GX and Mass Profiler Professional, as well as Pathway Architect.
Origin and OriginPro 2015 are software applications for data analysis and publication-quality graphing that are tailored to the needs of scientists and engineers. The applications are designed to offer an easy-to-use interface for beginners, and the ability for advanced users to customize analysis and graphing tasks using themes, templates, custom reports, batch processing and programming.
Huygens Titan is lightweight software that indexes, finds and shows 2-D to 5-D microscopic image data. It can read all common microscope formats from any folder and subdirectory on any location to which a user has access. The software does not alter or move images.
During the 1930s, North America endured the Dust Bowl, a prolonged era of dryness that withered crops and dramatically altered where the population settled. Land-based precipitation records from the years leading up to the Dust Bowl are consistent with the telltale drying-out period associated with a persistent dry weather pattern, but they can’t explain why the drought was so pronounced and long-lasting.
Strong solar flares can bring down communications and power grids on Earth. By demonstrating how these gigantic eruptions are caused, physicists are laying the foundations for future predictions. The shorter the interval between two explosions in the solar atmosphere, the more likely it is that the second flare will be stronger than the first one.
The central mystery of quantum mechanics is that small chunks of matter sometimes seem to behave like particles, sometimes like waves. For most of the past century, the prevailing explanation of this conundrum has been what’s called the “Copenhagen interpretation” — which holds that, in some sense, a single particle really is a wave, smeared out across the universe, which collapses into a determinate location only when observed.
Earth's protective but fragile ozone layer is beginning to recover, largely because of the phase-out since the 1980s of certain chemicals used in refrigerants and aerosol cans, a U.N. scientific panel reported September 10, 2014, in a rare piece of good news about the health of the planet. Scientists said the development demonstrates that, when the world comes together, it can counteract a brewing ecological crisis.
New software launched by researchers at Birmingham City University aims to reduce the long periods of training and expensive equipment required to make music, while also giving musicians more intuitive control over the music that they produce. The developed software, showcased at the British Science Festival, trains computers to understand the language of musicians when applying effects to their music.
The Antwerp Diamond Center theft and other sophisticated, high-value heists show that motivated criminals can find ways to overcome every obstacle between them and their targets. Can the Energy and Defense departments, responsible for analyzing, designing and implementing complex systems to protect vital national security assets, learn from security failures in the banking, art and jewelry worlds? Sandia Labs set out to answer that question
SigmaPlot Version 13 is a scientific data analysis and graphing software package with features that include Forest plots, which combine the results of like studies to improve statistical significance, and Kernel Density — a smooth probability distribution plot — as well as Analysis of Covariance (ANCOVA), which includes the effects of “nuisance” variables, and Principal Components Analysis (PCA) to determine the major data relationships.
How using CPU/GPU parallel computing is the next logical step - My work in computational mathematics is focused on developing new, paradigm-shifting ideas in numerical methods for solving mathematical models in various fields. This includes the Schrödinger equation in quantum mechanics, the elasticity model in mechanical engineering, the Navier-Stokes equation in fluid mechanics, Maxwell’s equations in electromagnetism...
With over 700 new functions — the single biggest jump in new functionality in the software's history — Mathematica 10 is the first version of Mathematica based on the complete Wolfram Language. Integration with the Wolfram Cloud and access to the expanded Wolfram Knowledgebase open up new possibilities for intelligent computation and deployment.
Discovering a brain tumor is a very serious issue, but it is not the end of the story. There are many different types of brain tumor with different survival rates and different methods for treatment. However, today, many brain tumors are difficult to clearly diagnose, leading to poor prognoses for patients.
Dinosaurs and mathematics do not seem like an obvious pair, but for Robert Sinclair and his Mathematical Biology Unit, they are a logical match. Sinclair was part of a team that recently published a paper reexamining the classification of a dinosaur bone found. Using his expertise in mathematics, Sinclair was able to help reclassify a single arm bone as belonging to a dinosaur family previously believed not to have existed ...
On the eve of the 2014 FIFA World Cup, researchers investigated the productivity of top goal scorers in international football. The RMIT University team applied advanced econometric techniques to a sample of 66 top goal scorers in the Union of European Football Associations (UEFA) Champions League between 1991 and 2011.
There are some 100 million other places in the Milky Way galaxy that could support complex life, report a group of university astronomers in the journal Challenges. They have developed a new computation method to examine data from planets orbiting other stars in the universe. Their study provides the first quantitative estimate of the number of worlds in our galaxy that could harbor life above the microbial level.
Nelson Mandela said: “We must use time wisely and forever realize that the time is always ripe to do right.” Time series data have a temporal order that makes analysis distinctly different from other data analysis. The goal of time series analysis can be divided into characterization or prediction.
I can most simply describe this book by quoting from the back cover: Motivation — “…how can you get started in a wide-ranging, interdisciplinary field that’s so clouded in hype?” Background Needed — “If you’re familiar with linear algebra, probability, and statistics, and have programming experience…”
Celebrated portrait photographers like Richard Avedon, Diane Arbus, and Martin Schoeller made their reputations with distinctive visual styles that sometimes required the careful control of lighting possible only in the studio. Now, MIT researchers and their colleagues at Adobe Systems and the University of Virginia, have developed an algorithm that could allow you to transfer those distinctive styles to your own cellphone photos.
Now at Mark 24, the NAG C Library is a collection of hundreds of user-callable mathematical and statistical functions for C and C++ programmers. It contains over 1,500 powerful algorithms that are designed to be reliable, flexible and ready-for-use from a wide range of operating systems, languages, environments and packages
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