Mathematics and Computer Science at The University of Virginia's College at Wise
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Hacking and computer security. Read today's research news on hacking and protecting against codebreakers. New software, secure data sharing, and more.
Updated: 5 min 23 sec ago

'Deep web search' may help scientists

Sat, 05/23/2015 - 14:09
When you do a simple Web search on a topic, the results that pop up aren't the whole story. The Internet contains a vast trove of information -- sometimes called the "Deep Web" -- that isn't indexed by search engines: information that would be useful for tracking criminals, terrorist activities, sex trafficking and the spread of diseases. Scientists could also use it to search for images and data from spacecraft.

The Viking's grave and the sunken ship: New photogrammetry method transforms archaeological sites

Fri, 05/22/2015 - 17:15
Mapping archaeological digs takes plenty of time and a lot of measuring, photographing, drawing and note taking. Now, most of this work can be done with a technique called photogrammetry. Photogrammetry is a method that uses two-dimensional images of an archaeological find to construct a 3D model.

New computational technique advances color 3D printing process

Fri, 05/22/2015 - 15:22
A technique has been developed that enables hydrographic printing, a widely used industrial method for transferring color inks on a thin film to the surface of 3D objects, to color these surfaces with the most precise alignment ever attained. This new computational method, which simulates the printing process and predicts color film distortion during hydrographic immersion, generates a colored film that guarantees exact alignment of the surface textures to the object.

Robot masters new skills through trial and error

Fri, 05/22/2015 - 14:54
Researchers have developed algorithms that enable robots to learn motor tasks through trial and error using a process that more closely approximates the way humans learn, marking a major milestone in the field of artificial intelligence.

3D geological tour of the Guadalquivir basin using Google Earth

Fri, 05/22/2015 - 12:34
A research team has developed a tool that allows a 3D journey in ten sites of geological and palaeontological interest in the Guadalquivir basin (Huelva, Spain). In the virtual tour, developed with Google Earth, you can visit and explore treasures of this area, such as records of the opening of the Atlantic Ocean, using tablets and smartphones.

Facebook status updates reveal low self-esteem and narcissism

Fri, 05/22/2015 - 01:37
People who post Facebook status updates about their romantic partner are more likely to have low self-esteem, while those who brag about diets, exercise, and accomplishments are typically narcissists, according to new research.

Supercomputer unlocks secrets of plant cells to pave the way for more resilient crops

Fri, 05/22/2015 - 01:06
Scientists have moved a step closer to identifying the nanostructure of cellulose -- the basic structural component of plant cell walls. The insights could pave the way for more disease resistant varieties of crops and increase the sustainability of the pulp, paper and fiber industry -- one of the main uses of cellulose.

Time to move beyond 'Medieval' cyber security approach, expert says

Fri, 05/22/2015 - 01:05
The nation's approach to cyber security has much in common with medieval defense tactics, and that needs to change, says a cyber security expert.

Significant cost savings found in pediatric telemedicine consults

Thu, 05/21/2015 - 19:18
A comprehensive study has been completed to determine whether pediatric telemedicine consultations with rural emergency departments save money compared to telephone consults.

Intuitive control of robotic arm using thoughts alone

Thu, 05/21/2015 - 18:40
Through a clinical collaboration between Caltech, Keck Medicine of USC and Rancho Los Amigos National Rehabilitation Center, a 34-year-old paralyzed man is the first person in the world to have a neural prosthetic device implanted in a region of the brain where intentions are made, giving him the ability to perform a fluid hand-shaking gesture, drink a beverage, and even play 'rock, paper, scissors,' using a robotic arm.

Cutting e-waste: Device will self-destruct when heated

Thu, 05/21/2015 - 17:37
Where do electronics go when they die? Most devices are laid to eternal rest in landfills. But what if they just dissolved away, or broke down to their molecular components so that the material could be recycled? Researchers have developed heat-triggered self-destructing electronic devices, a step toward greatly reducing electronic waste and boosting sustainability in device manufacturing. They also developed a radio-controlled trigger that could remotely activate self-destruction on demand.

Emoticons may signal better customer service ;)

Thu, 05/21/2015 - 16:10
Online customer service agents who use emoticons and who are fast typists may have a better chance of putting smiles on their customers' faces during business-related text chats, according to researchers.

Social structure 'helps birds avoid a collision course'

Thu, 05/21/2015 - 13:49
The sight of skilful aerial maneuvering by flocks of Greylag geese to avoid collisions with York's Millennium Bridge intrigued a mathematical biologist. It raised the question of how birds collectively negotiate human-made obstacles such as wind turbines that lie in their flight paths.

Simulations predict flat liquid

Thu, 05/21/2015 - 12:23
Computer simulations have predicted a new phase of matter: atomically thin two-dimensional liquid.

Designing microwave devices from scratch using computer simulations

Thu, 05/21/2015 - 12:22
For decades, the fundamental design of microwave devices, such as antennas for mobile communication and waveguides used in radars, has essentially relied on the inventiveness of a professional designer. Computer simulations are usually used only in final design stages to fine-tune details in the design. This classical approach to microwave device design has now been challenged.

Preventing soil erosion, surface runoff

Wed, 05/20/2015 - 23:35
The same spring rains that lessen producers' concerns about drought can also lead to soil erosion and nutrient runoff. Keeping soil and fertilizers where they belong--in the field--benefits producers and the environment, according to a plant scientist who used computer modeling to determine which farm management methods will produce the best reduction in surface runoff.

Online safety: If you want something done right, do it yourself

Wed, 05/20/2015 - 20:03
The end-user is often the 'weakest link' in the Internet safety chain according to experts. The team's conclusion: Internet users have to take personal responsibility for their safety and security. This includes taking the necessary steps to learn how it can be done.

With one false tweet, computer-based hack crash led to real panic

Wed, 05/20/2015 - 20:01
A false tweet from a hacked account owned by the Associated Press demonstrates the need to better understand how social media data is linked to decision making in the private and public sector, according to new research.

Energy harvesting? Measuring thermoelectric behavior by 'tinkertoy' materials

Wed, 05/20/2015 - 18:06
Researchers have made the first measurements of thermoelectric behavior by a nanoporous metal-organic framework (MOF), a development that could lead to an entirely new class of materials for such applications as cooling computer chips and cameras and energy harvesting.

How video gamers will be able to play in the cloud without guzzling gigabytes

Wed, 05/20/2015 - 17:46
Gamers might one day be able to enjoy the same graphics-intensive fast-action video games they play on their gaming consoles or personal computers from mobile devices such as smartphones and tablets without guzzling gigabytes, thanks to a new tool developed. Named 'Kahawai' after the Hawaiian word for stream, the tool delivers graphics and gameplay on par with conventional cloud-gaming, while using one sixth of the bandwidth.