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Ultra-compact dwarf galaxies are bright star clusters

TechAndComputer (Dec. 19, 2011) — Astronomy & Astrophysics is publishing the results of a detailed investigation of how many 'ultra-compact dwarf galaxies' (UCDs) can be found in nearby galaxy clusters. UCDs were recognized as a populous and potentially distinct class of stellar systems about a decade ago. But they are still mysterious objects that are characterized by a compact morphology (30-300 light-years in size) and high masses (more...

TechAndComputer (Dec. 19, 2011) — Astronomy & Astrophysics is publishing the results of a detailed investigation of how many 'ultra-compact dwarf galaxies' (UCDs) can be found in nearby galaxy clusters. UCDs were recognized as a populous and potentially distinct class of stellar systems...

Patterns seen in spider silk and melodies connected

TechAndComputer (Dec. 8, 2011) — Using a new mathematical methodology, researchers at MIT have created a scientifically rigorous analogy that shows the similarities between the physical structure of spider silk and the sonic structure of a melody, proving that the structure of each relates to its function in an equivalent way.

The step-by-step comparison begins with the primary building blocks of each item -- an amino acid and a sound wave -- and...

TechAndComputer (Dec. 8, 2011) — Using...

Learning spatial terms improves children's spatial skills

TechAndComputer (Nov. 9, 2011) — Preschool children who hear their parents describe the size and shape of objects and then use those words themselves perform better on tests of their spatial skills, researchers at the University of Chicago have found.

The study is the first to show that learning to use a wide range of spatial words predicts children's later spatial thinking, which in turn is important in mathematics, science and technology....

TechAndComputer (Nov. 9, 2011) — Preschool...

Big, little, tall and tiny: Learning spatial terms improves children's spatial skills

TechAndComputer (Nov. 9, 2011) — Preschool children who hear their parents describe the size and shape of objects and then use those words themselves perform better on tests of their spatial skills, researchers at the University of Chicago have found.

The study is the first to show that learning to use a wide range of spatial words predicts children's later spatial thinking, which in turn is important in mathematics, science and technology....

TechAndComputer (Nov. 9, 2011) — Preschool...

Using math and light to detect misshapen red blood cells

TechAndComputer (Oct. 31, 2011) — Misshapen red blood cells (RBCs) are a sign of serious illnesses, such as malaria and sickle cell anemia. Until recently, the only way to assess whether a person's RBCs were the correct shape was to look at them individually under a microscope -- a time-consuming process for pathologists. Now researchers from the University of Illinois at Urbana-Champaign (UIUC) have pioneered a technique that will allow doctors...

TechAndComputer (Oct. 31, 2011) —...

Studying random structures with confetti

TechAndComputer (Oct. 10, 2011) — Chance and probability play a natural role in statistical physics. Inspired by confetti, researchers at the University of Gothenburg, Sweden, are gaining better understanding of random phenomena and refine the tools that can be used to study them.

"The result of small disturbances to random systems can be illustrated by throwing confetti. If simple rules are constructed at a small scale, it is possible to study...

TechAndComputer (Oct. 10, 2011) — Chance...

Social media sites may reveal information about problem drinking among college students

TechAndComputer (Oct. 3, 2011) — Social media websites, such as Facebook and MySpace, may reveal information that could identify underage college students who may be at risk for problem drinking, according to a report published Online First by Archives of Pediatrics and Adolescent Medicine, one of the JAMA/Archives journals.

According to background information in the article, alcohol is a major cause of injury and death among U.S. college...

TechAndComputer (Oct. 3, 2011) — Social media...

Tracing an elusive killer parasite in Peru

TechAndComputer (Sep. 27, 2011) — Despite what Hollywood would have you believe, not all epidemics involve people suffering from zombie-like symptoms--some can only be uncovered through door-to-door epidemiology and advanced mathematics.

Michael Levy, PhD, assistant professor of Biostatistics and Epidemiology, at the Perelman School of Medicine, University of Pennsylvania, along with other collaborators from Penn, Johns Hopkins University, the...

TechAndComputer (Sep. 27, 2011) — Despite...

Hedge funds sold stocks quickly while mutual fund investors suffered larger losses during crisis

TechAndComputer (Aug. 25, 2011) — A new study of stock trading during the financial crisis of 2007 to 2009 found that hedge funds sold their stocks much more aggressively than mutual funds at the first signs of poor performance.

These selloffs occurred in response to falling stock values, the study found. Hedge fund investors withdrew almost three times as much of the money they invested as compared to mutual fund investors.

As a result, the total...

TechAndComputer (Aug. 25, 2011) — A...