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: 19 min 32 sec ago

Silicon nanoparticles trained to juggle light

Tue, 08/23/2016 - 16:54
Silicon nanoparticles based devices would allow to transmit, reflect, or scatter incident light in a specified direction, depending on its intensity. They could be integrated into microchips that would enable ultrafast all-optical signal processing in optical communication lines and the next generation optical computers.

Analog DNA circuit does math in a test tube

Tue, 08/23/2016 - 16:53
Researchers have created strands of synthetic DNA that, when mixed together in a test tube in the right concentrations, form an analog circuit that can add, subtract and multiply as the molecules form and break bonds. While most DNA circuits are digital, their device performs calculations in an analog fashion by measuring the varying concentrations of specific DNA molecules directly, without requiring special circuitry to convert them to zeroes and ones first.

Chaos could provide the key to enhanced wireless communications

Tue, 08/23/2016 - 16:51
Scientists have demonstrated that chaos can be used to transmit information over a wireless physical channel offering wide-ranging advantages from enhanced communications security.

Reproducing spots and stripes of a furry animal: Understanding nature's patterns with plasmas

Tue, 08/23/2016 - 16:48
Patterns abound in nature, from zebra stripes and leopard spots to honeycombs and bands of clouds. Somehow, these patterns form and organize all by themselves. To better understand how, researchers have now created a new device that may allow scientists to study patterns in 3-D like never before.

New approach to determining how atoms are arranged in materials

Tue, 08/23/2016 - 15:20
Researchers have developed a novel approach to characterizing how atoms are arranged in materials, using Bayesian statistical methods to glean new insights into the structure of materials. The work should inform the development of new materials for use in a variety of applications.

New microchip demonstrates efficiency and scalable design

Mon, 08/22/2016 - 22:18
The Piton chip's architecture is scalable; designs can be built which go from a dozen processing units (called cores) to several thousand.

Light and matter merge in quantum coupling

Mon, 08/22/2016 - 19:26
Physicists probe the boundaries of light-matter interactions as they bridge traditional condensed matter physics and cavity-based quantum optics.

The science of diffusion and the spread of public policy

Mon, 08/22/2016 - 18:42
Scientists merged the domains of health policy with network science and dynamical systems to help understand the mechanisms of policy diffusion in the same way we understand the diffusion of one substance into another.

'Artificial atom' created in graphene

Mon, 08/22/2016 - 14:07
When they are confined to a small space, the behavior of electrons can only be explained by quantum physics. Much like electrons in an atom, they are forced into discrete quantum states. These states can be used for quantum information technologies.

New theory could lead to new generation of energy friendly optoelectronics

Mon, 08/22/2016 - 12:36
Researchers have created a new theoretical framework which could help physicists and device engineers design better optoelectronics, leading to less heat generation and power consumption in electronic devices which source, detect, and control light.

Cybersecurity student researches how to keep cars safe from hacking

Fri, 08/19/2016 - 15:49
Cybersecurity student researches spent the summer researching how to keep cars safe from cyberattacks during an intensive eight-week cybersecurity summer research program.

Mathematical analysis conducted of a rare cavernicolous crustacean

Fri, 08/19/2016 - 15:42
A scientific collaboration has discovered previously unknown regularities of arthropod limbs based on studies of the remipede Speleonectes tulumensis, a rare crustacean found in saline waters of caves.

People favour expressive, communicative robots over efficient and effective ones

Fri, 08/19/2016 - 12:46
Making an assistive robot partner expressive and communicative is likely to make it more satisfying to work with and lead to users trusting it more, even if it makes mistakes, a new study suggests.

Scientists combine satellite data, machine learning to map poverty

Thu, 08/18/2016 - 19:00
The availability of accurate and reliable information on the location of impoverished zones is surprisingly lacking for much of the world. Applying machine learning to satellite images could identify impoverished regions in Africa, say researchers.

X-ray optics on a chip

Thu, 08/18/2016 - 15:15
Waveguides are widely used for filtering, confining, guiding, coupling or splitting beams of visible light. However, creating waveguides that could do the same for X-rays has posed tremendous challenges in fabrication, so they are still only in an early stage of development.

Natural scale caterpillar soft robot is powered and controlled with light

Thu, 08/18/2016 - 14:26
Researchers, using the liquid crystal elastomer technology have demonstrated a bioinspired micro-robot capable of mimicking caterpillar gaits in natural scale. The 15-millimeter long soft robot harvests energy from green light and is controlled by spatially modulated laser beam. Apart from traveling on flat surfaces, it can also climb slopes, squeeze through narrow slits and transport loads.

The math of earthquakes

Thu, 08/18/2016 - 13:06
A computational science doctoral student has successfully tied a new mathematical modeling process to the study of earthquakes.

Extension theory of operators in Krein, Pontryagin spaces, applications

Thu, 08/18/2016 - 13:00
A new study investigates and generalizes several well-known results from Extension theory of operators. In a new doctoral dissertation, a researcher has been able to improve a couple of classical theorems known in the area, namely Shmul'yan theorem on completion of nonnegative block operators and Krein famous theorem on description of selfadjoint contractive extensions of a Hermitian contraction.  

Personalized wearable tech can help adults diagnosed with autism manage anxiety

Wed, 08/17/2016 - 18:30
Personalized wearable digital technology can help adults diagnosed with autism understand and manage their anxiety, say researchers.

Interscatter enables first implanted devices, contact lenses, credit cards to 'talk' WiFi

Wed, 08/17/2016 - 18:29
Engineers have introduced a new way of communicating that allows power-constrained devices such as brain implants, contact lenses, credit cards and smaller wearable electronics to talk to everyday devices such as smartphones and watches.