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Search results for “Traveling Salesman Problem”

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National emphysema results confirm Washington University findings

A national multicenter trial confirms that lung volume reduction surgery (LVRS) significantly improves the quality of life and life expectancy for patients with severe emphysema. The procedure, which involves removing diseased sections of lung tissue, allows patients to resume routine activities without breathing difficulties.

SourceWashU Medicine·JournalNew England Journal of Medicine·DateMay 20, 2003

US Physics olympiad team

The US Physics Olympiad team consists of 24 high school students from 14 different states who were selected to compete in the International Physics Olympiad. The team will undergo a week-long physics 'boot camp' and attend lectures by prominent scientists before traveling to Taipei, Taiwan for the competition.

Neighborhood layout could turn drivers into walkers

Researchers found that people living in walkable communities were more likely to leave their cars behind, suggesting that the physical environment plays a crucial role in shaping physical activity habits. The study's findings encourage policymakers to consider changes in neighborhood design as a way to promote better health.

SourceCenter for Advancing Health·JournalAnnals of Behavioral Medicine·DateApr 1, 2003

The hard work of vigilance can improve on cue

Researchers found that providing reliable warning cues enhances vigilance performance, maintaining attention and efficiency over time. The study's results have practical implications for designing operational cueing systems to reduce brain strain and improve safety in various applications.

SourceUniversity of Cincinnati·JournalTheoretical Issues in Ergonomics Science·DateJan 8, 2003

Let's talk about sex -- And pain

Researchers at McGill University are studying sex-associated pain in women, focusing on the issue of pain itself rather than its physical or psychological causes. They recommend a combination of cognitive behavioral pain management and physical therapy for relief.

Whip cracking mystery explained

Professor Alain Goriely explains that whip cracking is caused by a sonic boom generated by the loop in the whip, which travels at one speed but parts of it travel twice as fast. The tip's motion is also analyzed to reveal why it wasn't heard when hitting the speed of sound

SourceAmerican Physical Society·JournalPhysical Review Letters·DateMay 23, 2002

Weird wave behavior near earth's core

Researchers used experiments and mathematical modeling to understand seismic wave behavior in the lower mantle, finding that mineral grain alignment causes unusual wave behavior. The study provides a window into Earth's inner workings and is an important step toward integrating seismology and geodynamics in the lower mantle.

SourceUniversity of Michigan·JournalNature·DateMar 20, 2002

World's smallest atom storage ring is first to guide ultra-cold neutral atoms; a step toward 'atom fiber optics'

Researchers at Georgia Institute of Technology have developed the first storage ring to confine and guide ultra-cold neutral atoms in a circular path. The Nevatron ring marks a step toward creating atom fiber optics that could improve aircraft guidance systems and open new areas of study in basic physics.

SourceGeorgia Institute of Technology·JournalPhysical Review Letters·DateDec 15, 2001

Discovery of extra energy escaping from supermassive black hole a first, say scientists

A team of researchers using the XMM Newton satellite detected X-ray emissions from a supermassive black hole, indicating it is spinning and emitting energy through a complex magnetic field system. This discovery provides new insights into the behavior of supermassive black holes and their role in galaxy formation.

SourceUniversity of Colorado at Boulder·JournalMonthly Notices of the Royal Astronomical Society·DateOct 22, 2001

Earth's deepest secrets

Scientists have long known that Earth's core is primarily composed of iron, but the cause of seismic waves traveling faster in certain directions was unclear. Recent studies using supercomputer simulations revealed a temperature-dependent alignment of crystal structures in the inner core, shedding new light on this phenomenon.

SourceUniversity of Michigan·JournalNature·DateSep 5, 2001