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Cancer therapy 'tumor sanctuaries' and the breeding ground of resistance

Thu, 03/19/2015 - 18:33
Tumors acquiring resistance is one of the major barriers to successful cancer therapy. Scientistst use mathematical models to characterize how important aspects of tumor microenvironment can impair the efficacy of targeted cancer therapies.

Scientists invent new way to control light, critical for next gen of super fast computing

Thu, 03/19/2015 - 17:10
A device resembling a plastic honeycomb yet infinitely smaller than a bee's stinger can steer light beams around tighter curves than ever before possible, while keeping the integrity and intensity of the beam intact.

Citizen science project helps scientists develop a quantum computer

Thu, 03/19/2015 - 14:53
Since Quantum Games came online as a citizen science project to help scientists develop a quantum computer, the game has been played 400,000 times, making it possible for researchers to discover a kind of 'atlas of human thoughts.'

Quantum computing: One step closer with defect-free logic gate

Thu, 03/19/2015 - 13:22
What does hair styling have in common with quantum computing? The braiding pattern has inspired scientists as a potential new approach to quantum calculation. But due to their tight assembly, such braids are much more difficult to destabilize and less error-prone. Yet, local defects can still arise along nanowires. A new study identifies potential sources of computer errors arising from these defects.

Quantum dots 'breathe' in response to stress

Thu, 03/19/2015 - 13:19
Researchers have watched nanoscale semiconductor crystals expand and shrink in response to powerful pulses of laser light. This ultrafast "breathing" provides new insight about how such tiny structures change shape as they start to melt -- information that can help guide researchers in tailoring their use for a range of applications.

Text message reminders boost breast cancer screening attendance

Thu, 03/19/2015 - 12:01
Women who received a text message reminding them about their breast cancer screening appointment were 20 per cent more likely to attend than those who were not texted, according to a study. "Our research found that a cheap, simple text-message-reminder could boost the number of women -- especially those from deprived areas -- attending screening, or cancelling in advance," authors said.

Computer sims: In climatic tug of war, carbon released from thawing permafrost wins handily

Wed, 03/18/2015 - 19:39
There will be a lot more carbon released from thawing permafrost than the amount taken in by more Arctic vegetation, according to new computer simulations. The findings are from an Earth system model that is the first to represent permafrost processes as well as the dynamics of carbon and nitrogen in the soil. Simulations using the model showed that by the year 2300, if climate change continues unchecked, the net loss of carbon to the atmosphere from Arctic permafrost would range from between 21 petagrams and 164 petagrams. That's equivalent to between two years and 16 years of human-induced CO2 emissions.

Robot model for infant learning shows bodily posture may affect memory and learning

Wed, 03/18/2015 - 19:39
Using both robots and infants, a cognitive scientist and collaborators have found that posture is critical in the early stages of acquiring new knowledge. "This study shows that the body plays a role in early object name learning, and how toddlers use the body's position in space to connect ideas," an author said. "The creation of a robot model for infant learning has far-reaching implications for how the brains of young people work."

Finding support for surgery on Facebook

Wed, 03/18/2015 - 18:06
Despite the popularity of social networking sites like Facebook, scientists are only beginning to learn how they affect human interaction. In a recent study, researchers examined Facebook conversations to better understand how people seek and receive support on social networking sites. When the researchers examined the conversations where the initial posts mentioned surgery, they discovered that posts referencing a family member triggered much greater response via comments on that post.

Electronic waste has energy value

Wed, 03/18/2015 - 17:44
Using discarded electronic boards, researchers have developed a system for obtaining clean hydrogen that can be used as fuel. The researchers have already registered the patent of the process in Japan.

New optical materials break digital connectivity barriers

Wed, 03/18/2015 - 17:04
In our increasingly networked world, we need much faster computer components to support enormous amounts of data transfer and data processing. A new study finds that new optical materials could serve as the nuts and bolts of future ultra-high-speed optical computing components. These 'nonlinear metamaterials,' which possess physical capabilities not found in nature, may be the building blocks that allow major companies like IBM and Intel to move from electronic to optical computing.

Actual Reality tested in functional assessment post-TBI

Wed, 03/18/2015 - 17:04
Actual Reality has been described as a new tool for assessing performance of activities of everyday life in people with traumatic brain injury (TBI). A new article outlines the first study examining the use of Actual Reality in the TBI population.

Measuring the effect of urban planning changes

Wed, 03/18/2015 - 17:03
With a population likely to grow 27 percent by 2031, putting an end to urban sprawl in Greater Montreal appears impossible for the short to medium term. But it is possible to slow the pace of urban sprawl by harnessing the full development potential of central areas, according to forecasts by the researcher who developed a spatial microsimulation model called Local Demographic Simulations.

Nanostructure complex materials modeling

Wed, 03/18/2015 - 14:08
Brookhaven physicists have illustrated how advances in computing and applied mathematics can improve the predictive value of models used to design new materials.

30 years after C60: Fullerene chemistry with silicon opens new possibilities in semiconductor industry

Wed, 03/18/2015 - 12:47
Chemists have managed to synthesize a compound featuring an Si20 dodecahedron. The long strived-for silicon dodecahedron has been synthesized at room temperature.

Understanding democracy, development traps using a data-driven approach

Wed, 03/18/2015 - 11:42
Why do some countries seem to develop quickly while others remain poor? This question is at the heart of the so-called poverty or development trap problem. Using mathematics on open data sets researchers now present new insights into this issue, and also suggest which countries can be expected to develop faster. The paper is published in the journal Big Data.

New ipad game uses citizen science to track endangered species

Wed, 03/18/2015 - 11:42
Today, a new app for the iPad was released that could change the way wildlife is monitored in the future.

Human brain inspires wearable micro-sensors

Wed, 03/18/2015 - 11:40
An electrical and computer engineer is taking a cue from nature to devise the next generation of integrated low-power, wearable micro-devices.

Data structures influence speed of quantum search in unexpected ways

Tue, 03/17/2015 - 19:24
Quantum computers will be able to find target items within large piles of data far faster than conventional computers though the speed of the search will likely depend on the structure of the data. Intuition says that the search would be fastest in a highly connected database, but a new analysis found counterexamples of slowed search on a highly connected structure and fast search on a sparsely connected one.

Teens' approach to social media risk is different from adults'

Tue, 03/17/2015 - 16:26
For every parent who ever wondered what the heck their teens were thinking when they posted risky information or pictures on social media, a team of researchers suggests that they were not really thinking at all, or at least were not thinking like most adults do.