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: 55 min 45 sec ago

To catch a poacher: GIS, drones can improve elephant conservation

Wed, 05/18/2016 - 21:04
Applying a suite of geographical information system (GIS) tools can improve monitoring for elephant poaching, according to researchers. Investigating Tsavo, a region in southwest Kenya that is home to that country's largest elephant population, the researchers tried to identify methods that local conservation groups could use to reduce poaching.

Your friends have more friends than you do

Wed, 05/18/2016 - 21:04
No matter how smart and funny you think you are, those you follow on Twitter really do have a larger following than you. And the same holds true for Facebook. But there is no reason to feel badly about any of this, according to researchers who say that it is all due to the inherently hierarchical nature of social media networks, where, in the social hierarchy of connections, people mostly either follow up or across; they rarely follow down.

Future geriatricians 'become' Alfred, a 74-year-old patient, using virtual reality

Wed, 05/18/2016 - 19:34
A virtual reality experience transforms the user into a 74-year-old named Alfred in order to see his perspective as a medical patient.

Educational debt for emergency medicine bigger than average mortgage

Wed, 05/18/2016 - 19:29
The average educational debt carried by emergency medicine residents is approximately 25 percent higher than the average mortgage in the United States, according to the results of a recent study, and has profound effects on EM residents career and life choices.

Researchers develop new way to decode large amounts of biological data

Wed, 05/18/2016 - 19:28
In recent years, the amount of genomic data available to scientists has exploded. This trove of genetic information has created a problem: how can scientists quickly analyze all of this data. Now, researchers have developed an innovative computing technique that is both faster and more accurate than current methods.

Big data, better care for chronic kidney disease patients

Wed, 05/18/2016 - 18:14
A team of physicians and computer scientists is using merged electronic health records to improve care and clinical outcomes for patients with chronic kidney disease, which affects some 26 million American adults.

How your brain learns to ride the subway, and why AI developers care

Wed, 05/18/2016 - 16:55
In machine learning, a programmer might develop an AI that can calculate all possible consequences of a single action. Humans, however, don't have the same raw computational power; we have to efficiently create and execute a plan. We mentally invent different 'layers' to organize our actions and then think about the higher levels rather than individual steps, according to a new study.

Robots get creative to cut through clutter

Wed, 05/18/2016 - 16:04
Clutter is a special challenge for robots, but new software is helping robots cope, whether they're beating a path across the Moon or grabbing a milk jug from the back of the refrigerator. The software not only helped a robot deal efficiently with clutter, it surprisingly revealed the robot's creativity in solving problems.

How repeated spot microdischarges damage microdevices

Wed, 05/18/2016 - 16:02
In microelectronics, devices made up of two electrodes separated by an insulating barrier are subject to multiple of microdischarges -- referred to as microfilaments -- at the same spot. Now have elucidated the mechanism of microdischarge reoccurrence, by attributing it to the temperature increase in a single microdischarge.

Gentle strength for robots

Wed, 05/18/2016 - 16:02
A soft actuator using electrically controllable membranes could pave the way for machines that are no danger to humans.

New type of graphene-based transistor will increase the clock speed of processors

Wed, 05/18/2016 - 16:01
Scientists have developed a new type of graphene-based transistor and using modelling they have demonstrated that it has ultralow power consumption compared with other similar transistor devices. The most important effect of reducing power consumption is that it enables the clock speed of processors to be increased. According to calculations, the increase could be as high as two orders of magnitude.

Digital health intervention does not lower heart attack risk

Wed, 05/18/2016 - 16:01
Researchers examined whether a digital health intervention using email and text messages designed to change diet and physical activity would improve heart attack risk among a South Asian population.

Innovations are needed if big data is to boost jobs, says new research

Wed, 05/18/2016 - 13:47
Phenomenal quantities of valuable data are now being collected and created by UK businesses but much of its commercial potential remains untapped, a new report suggests.

High-efficiency power amplifier could bring 5G cell phones

Tue, 05/17/2016 - 23:19
A new highly efficient power amplifier for electronics could help make possible next-generation cell phones, low-cost collision-avoidance radar for cars and lightweight microsatellites for communications.

Squeezing out mountains, mathematically, on Jupiter's moon Io

Tue, 05/17/2016 - 23:18
The odd-looking mountains on Jupiter's innermost moon, Io, are made by a tectonic process unique to Io (and maybe the early Earth), suggests a numerical experiment.

Words, more words ... and statistics

Tue, 05/17/2016 - 17:16
Picking out single words in a flow of speech is no easy task and, according to linguists, to succeed in doing it the brain might use statistical methods. A group of scientists has applied a statistics-based method for word segmentation and measured its efficacy on natural language, in nine different languages, to discover that linguistic rhythm plays an important role.

Twitter location data can reveal users' home, work addresses

Tue, 05/17/2016 - 17:08
The location stamps on just a handful of Twitter posts -- as few as eight over the course of a single day -- can be enough to disclose the addresses of the poster's home and workplace to a relatively low-tech snooper.

More than ten risk factors identified in readmission of pediatric neurosurgery patients

Tue, 05/17/2016 - 17:08
Big data provides insight into patient readmission after pediatric neurosurgery in a new study. The study looks at specific surgical procedures performed, such as cerebral spinal fluid shunt replacement or CSF shunt revision, as well as patient demographics and postoperative complications like surgical site infection.

What makes the public more likely to second-guess authorities during a crisis?

Tue, 05/17/2016 - 13:44
In a digital age when people have many information sources, during a crisis they won’t always seek guidance from the government or other official channels. Why not?

New technology reduces 30% chip area of STT-MRAM while increasing memory bit yield by 70%

Tue, 05/17/2016 - 13:42
Researchers have successfully developed a technology to stack magnetic tunnel junctions directly on the vertical interconnect access.