Mathematics and Computer Science at The University of Virginia's College at Wise
Syndicate content Computers & Math News -- ScienceDaily
Hacking and computer security. Read today's research news on hacking and protecting against codebreakers. New software, secure data sharing, and more.
Updated: 15 hours 16 min ago

Stacking two-dimensional materials may lower cost of semiconductor devices

Thu, 12/11/2014 - 16:55
A team of researchers has found that stacking materials that are only one atom thick can create semiconductor junctions that transfer charge efficiently, regardless of whether the crystalline structure of the materials is mismatched -- lowering the manufacturing cost for a wide variety of semiconductor devices such as solar cells, lasers and LEDs.

Early adoption of robotic surgery leads to organ preservation for kidney cancer patients

Thu, 12/11/2014 - 15:18
Researchers found that partial nephrectomy -- the recommended treatment for localized kidney tumors -- was performed more frequently at hospitals that were early adopters of robotic surgery.

Worms' mental GPS helps them find food

Wed, 12/10/2014 - 21:21
A theory to explain how animals gather information and switch attention has been devised by scientists who have developed a mathematical theory -- based on roundworm foraging -- that predicts how animals decide to switch from localized to very broad searching. This new theory could begin to explain animal behavior in a more unified way, laying the groundwork for general rules of behavior that could help us understand complex or erratic attention-related behaviors, such as attention deficit hyperactivity disorder (ADHD), and even let us predict how extraterrestrials might behave.

Crowdfunding 101 for science

Wed, 12/10/2014 - 20:22
Everything you know about crowdfunding is wrong, according to researchers. Crowdfunding is the practice of financing a project or venture through contributions from a large number of people, typically via the Internet. "At a time when money is getting ever tighter and more difficult to procure, having a completely different source of cash is incredibly valuable," one author said. "But the main value -- and the real power in all of this -- is that it provides a new argument to engage with the general public over the long term. Because long-term outreach is the only way to unlock significant dollar value out of the crowdfunding process."

New way to plug 'leaky' light cavities demonstrated

Wed, 12/10/2014 - 19:08
Engineers have demonstrated a new and more efficient way to trap light, using a phenomenon called bound states in the continuum that was first proposed in the early days of quantum wave mechanics.

Physicists explain puzzling particle collisions

Wed, 12/10/2014 - 18:13
An anomaly spotted at the Large Hadron Collider has prompted scientists to reconsider a mathematical description of the underlying physics. By considering two forces that are distinct in everyday life but unified under extreme conditions, they have simplified one description of the interactions of elementary particles. Their new version makes specific predictions about events that future experiments should observe and could help to reveal 'new physics,' particles or processes that have yet to be discovered.

Theory details how 'hot' monomers affect thin-film formation

Wed, 12/10/2014 - 17:14
Researchers have devised a mathematical model to predict how 'hot' monomers on cold substrates affect the growth of thin films being developed for next-generation electronics.

New 'electronic skin' for prosthetics, robotics detects pressure from different directions

Wed, 12/10/2014 - 17:14
Touch can be a subtle sense, but it communicates quickly whether something in our hands is slipping, for example, so we can tighten our grip. For the first time, scientists report the development of a stretchable 'electronic skin' closely modeled after our own that can detect not just pressure, but also what direction it's coming from. The study on the advance could have applications for prosthetics and robotics.

Smoothing the path to an independent life: Virtual reality based training systems boost cognitive functions

Wed, 12/10/2014 - 17:13
Virtual reality is a powerful tool to simulate real-life environments and situations. Scientists are exploring the medium as a way to help people with cognitive limitations overcome difficulties in life. Among the many kinds of disabilities, cognitive deficits may bring more hindrance to a person's life than others. For examples, dementia affects a patient's ability to do basic tasks such as grocery shopping or traveling to a specific place.

Internet searches can predict volume of ER visits

Wed, 12/10/2014 - 16:43
The correlation between Internet searches on a regional medical website and next-day visits to regional emergency departments was 'significant,' authors of a recent study say, suggesting that Internet data may be used in the future to predict the level of demand at emergency departments. This is the first study to use Internet data to predict emergency department visits in either a region or a single hospital.

Pros and cons of using big data to monitor drug safety

Wed, 12/10/2014 - 16:41
Although healthcare databases have allowed for greater access to real world medical data, using databases to evaluate the safety of medical products is complex and requires careful research consideration, a new report warns.

Limiting internet congestion a key factor in net neutrality debate

Wed, 12/10/2014 - 14:58
If Internet Service Providers known as ISPs initiate price discrimination in their pricing, a “recongestion effect” will occur. In other words, online delivery channels that are less congested at the onset of new pricing tiers will eventually become recongested when consumer behavior adjusts, according to new research.

Scientists resolve spin puzzle

Wed, 12/10/2014 - 13:06
Scientists have helped to uncover the properties of defects in the atomic structure of magnetite, potentially opening the way for its use in producing more powerful electronic devices.

Move over smart cities, the Internet of Things is off to the country

Wed, 12/10/2014 - 13:06
Computer scientists are investigating how the Internet of Things could work in the countryside.

Shifting boundaries and changing surfaces: Energies at work in closed flexible loop spanned by soap film

Wed, 12/10/2014 - 13:04
New research examines the energies at work in a closed flexible loop spanned by a soap film. While the underlying experiments are simple enough to be replicated in a kitchen sink, the research generates potentially important questions and changes how we think about different disciplines from material science to vertebrate morphogenesis.

Long-term aging of electronics in nuclear weapons

Wed, 12/10/2014 - 12:50
Researchers have studied radiation effects since the early days of nuclear weapons. But a 30-year program began in 2006 will provide real-time data for the first time on how electronics age within the weapon.

It doesn’t add up: People who say they are good at math, but aren't

Wed, 12/10/2014 - 12:41
Thinking you’re good at math and actually being good at it are not the same thing, new research has found. About one in five people who say they are bad at math in fact score in the top half of those taking an objective math test. But one-third of people who say they are good at math actually score in the bottom half.

Immunizing schoolkids fights flu in others, too

Wed, 12/10/2014 - 12:41
Mathematical models predicted it, and now a study confirms it: Immunizing school-aged children from flu can protect other segments of the population, as well, researchers report.

Robotic surgery technique to treat previously inoperable head and neck cancer tumors

Wed, 12/10/2014 - 12:38
In a groundbreaking new study, researchers have for the first time advanced a surgical technique performed with the help of a robot to successfully access a previously-unreachable area of the head and neck.

Mobile device use leads to few interactions between mother and child during mealtime

Tue, 12/09/2014 - 18:37
Moms who use mobile devices while eating with their young children are less likely to have verbal, nonverbal and encouraging interactions with them. The findings may have important implications about how parents balance attention between their devices with their children during daily life. Parent-child interactions during meal time in particular show a protective effect on child health outcomes such as obesity, asthma and adolescent risk behaviors.