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Computer vision and uncertainty in AI for robotic prosthetics
Researchers have developed new software that can be integrated with existing hardware to enable people using robotic prosthetics or exoskeletons to walk in a safer, more natural manner on different types of terrain. The new framework incorporates computer vision into prosthetic leg control, and includes robust artificial intelligence (AI) algorithms that allow the software to better account for uncertainty.
Novel insight reveals topological tangle in unexpected corner of the universe
In a recent theoretical study, scientists discovered the presence of the Hopfion topological structure in nano-sized particles of ferroelectrics -- materials with promising applications in microelectronics and information technology.
Formula may help 5G wireless networks efficiently share communications frequencies
Researchers have developed a mathematical formula that, computer simulations suggest, could help 5G and other wireless networks select and share communications frequencies about 5,000 times more efficiently than trial-and-error methods.
AI management can benefit the growing online workforce
New research shows that gig workers and others in the new crowd-work economy need more autonomy and clear purpose in online tasks to perform at a high level -- advantages that AI assistance offers. The findings are significant for an economy changed by coronavirus pandemic.
A stitch in time: How a quantum physicist invented new code from old tricks
Building large-scale quantum computers will require suppression of errors. Scientists have used a neat trick to apply powerful 3D error-suppression codes in a 2D architecture, something one industry insider said many thought was impossible.
World's fastest internet speed from a single optical chip
A research team has recorded the world's fastest internet speed from a single optical chip of 44.2 Terabits per second.
'One-way' electronic devices enter the mainstream
Engineers are the first to build a high-performance non-reciprocal device on a compact chip with a performance 25 times better than previous work. The new chip, which can handle several watts of power (enough for cellphone transmitters that put out a watt or so of power), was the leading performer in a DARPA SPAR program to miniaturize these devices and improve performance metrics.
Genetic barcodes can ensure authentic DNA fingerprints
Engineers have demonstrated a method for ensuring that an increasingly popular method of genetic identification called ''DNA fingerprinting'' remains secure against inadvertent mistakes or malicious attacks in the field. The technique relies on introducing genetic ''barcodes'' to DNA samples as they are collected and securely sending information crucial to identifying these barcodes to technicians in the laboratory.
Quantum leap: Photon discovery is a major step toward at-scale quantum technologies
A team of physicists has developed the first integrated photon source with the potential to deliver large-scale quantum photonics. The development of quantum technologies promises to have a profound impact across science, engineering and society. Quantum computers at scale will be able to solve problems intractable on even the most powerful current supercomputers, with many revolutionary applications, for example, in the design of new drugs and materials.
Scientists use pressure to make liquid magnetism breakthrough
Scientists have forced a solid magnetic metal into a spin liquid state, which may lead to insights into superconductivity and quantum computing.
First tunable, chip-based 'vortex microlaser' and detector
To break through a looming bandwidth bottleneck, engineers are exploring some of light's harder-to-control properties. Now, two new studies have shown a system that can manipulate and detect one such property: orbital angular momentum. Critically, they are the first to do so on small semiconductor chips and with enough precision that it can be used as a medium for transmitting information.
Early Bird uses 10 times less energy to train deep neural networks
Engineers have found a way to train deep neural networks for a fraction of the energy required today. Their Early Bird method finds key network connectivity patterns early in training, reducing the computations and carbon footprint for training deep learning.
Graphene-reinforced carbon fiber may lead to affordable, stronger car materials
A new way of creating carbon fibers -- which are typically expensive to make -- could one day lead to using these lightweight, high-strength materials to improve safety and reduce the cost of producing cars, according to a team of researchers. Using a mix of computer simulations and laboratory experiments, the team found that adding small amounts of the 2D graphene to the production process both reduces the production cost and strengthens the fibers.
A theoretical boost to nano-scale devices
Researchers have developed a new approach to the underlying physics of semiconductors. They calculated the quasi-Fermi levels in molecular junctions applying an ab initio approach.
Scientists break the link between a quantum material's spin and orbital states
Until now, electron spins and orbitals were thought to go hand in hand in a class of materials that's the cornerstone of modern information technology; you couldn't quickly change one without changing the other. But a new study shows that a pulse of laser light can dramatically change the spin state of one important class of materials while leaving its orbital state intact.

URL : http://www.sciencedaily.com/news/computers_math/computer_science
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