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Science News Archive March 2012 - Page 24


Page 24 of 32

Partnerships in the brain

Researchers developed a mathematical model to test whether neurons communicate individually or as groups. The method filters signals to determine if neurons collaborate flexibly within milliseconds. This breakthrough has the potential to reveal dynamic cell assemblies involved in planning and controlling behavior.

SourceRIKEN·JournalPLOS Computational Biology·DateMar 8, 2012

Cultural 'tightness' holds back female leadership -- but not always, says study

A study found that cultural 'tightness' can prevent the emergence of women leaders in some countries, but also supports equal opportunities for both sexes. Societies with loose cultures, such as New Zealand and Norway, showed a high rate of female leadership, while culturally tight countries like Pakistan had low rates.

SourceUniversity of Toronto, Rotman School of Management·JournalJournal of World Business·DateMar 8, 2012

Saving power, saving money

A team of researchers at Case Western Reserve University has developed a novel technique called fine-grained power gating, which can eliminate wasted energy in computer processors. This method reduces power consumption by up to 40% and also minimizes heat production, resulting in significant cost savings.

Want to limit aggression? Practice self-control!

A new review article examines the psychological research on self-control and aggression, finding that depleting self-control can increase aggressive behavior, while strengthening it can reduce it. Practicing self-control through techniques like using the non-dominant hand or improving posture can also improve impulse control.

SourceAssociation for Psychological Science·JournalCurrent Directions in Psychological Science·DateMar 8, 2012

Aging, overweight people stay happy says new study

A new cross-cultural study found that people reported better mental quality of life as they age, despite a decrease in physical quality of life. The study also found that being overweight or obese did not have a significant impact on mental well-being levels, contradicting the 'jolly fat' hypothesis.

SourceUniversity of Warwick·JournalEuropean Journal of Epidemiology·DateMar 8, 2012

Discovery of hair-cell roots suggests the brain modulates sound sensitivity

The discovery of a previously unknown root extension in hair cells suggests the brain regulates sound sensitivity and head position. This finding challenges current understanding of how hair cells work, with the striated organelle connecting the rootlets to the cell membrane enabling feedback from the cell to the detectors.

SourceUniversity of Illinois Chicago·JournalProceedings of the National Academy of Sciences·DateMar 8, 2012

'Chum cam' underwater video survey shows that reef sharks thrive in marine reserves

A team of scientists from the Institute for Ocean Conservation Science used video cameras to count Caribbean reef sharks inside and outside marine reserves on the Mesoamerican Barrier Reef. The results show that the sharks were more abundant in the reserves, with a higher relative abundance compared to areas where fishing is allowed.

Share and share alike

Researchers studied viral campaigns and found that increased product involvement and social network consideration significantly predicted sharing intentions. People filter information, but personal involvement in the item being shared also contributes to higher likelihood of sharing.

SourceInderscience Publishers·JournalInternational Journal of Electronic Marketing and Retailing·DateMar 8, 2012

Ultrafast sonograms shed new light on rapid phase transitions

Researchers have developed an ultrafast method to track structural changes in solid materials during phase transitions. This technique sheds new light on vanadium dioxide's fast transformation between transparent and reflective phases. The study provides valuable insights into designing high-speed optical switches using this material.

SourceVanderbilt University·JournalNature Communications·DateMar 8, 2012

Magnetic moon

A team of researchers from Harvard and MIT suggests that massive asteroid collision is responsible for the Moon's magnetic anomalies. The anomaly is found around the rim of a 2,400-kilometer-diameter crater known as South Pole-Aitken.

SourceHarvard University·JournalScience·DateMar 8, 2012

Vaccination may be key for true elimination of HIV-1

Scientists discovered an effective way to eliminate a persistent form of HIV-1 through vaccination strategy. The research found that heightened immune response prior to virus reactivation facilitates the elimination of latent viral reservoir, paving the way for true eradication.

SourceCell Press·JournalImmunity·DateMar 8, 2012

Sport fields: Catalysts for physical activity in the neighborhood?

A University of Alberta study found that individuals who live near areas with more traffic-related incidents are more likely to engage in sufficient levels of physical activity. The research also highlights the importance of increasing awareness about available facilities to encourage physical activity.

SourceUniversity of Alberta - Faculty of Physical Education and Recreation·JournalInternational Journal of Environmental Research and Public Health·DateMar 8, 2012