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ScienceDaily: Computers & Math News |
| A new platform for customizable quantum devices Posted: 24 Feb 2022 11:09 AM PST Scientists have demonstrated a wide range of tunability in a family of qubits, an important step in designing custom qubits for specific applications. |
| California's push for computer science education examined Posted: 24 Feb 2022 08:37 AM PST Despite California's computer science education policies, gender, racial and ethnic disparities persist among the high schools that offer these courses, the students enrolled in them and the faculty who teach them. |
| Development of a diamond transistor with high hole mobility Posted: 24 Feb 2022 08:27 AM PST Using a new fabrication technique, engineers have developed a diamond field-effect transistor (FET) with high hole mobility, which allows reduced conduction loss and higher operational speed. This new FET also exhibits normally-off behavior (i.e., electric current flow through the transistor ceases when no gate voltage is applied, a feature that makes electronic devices safer). These results may facilitate the development of low-loss power conversion and high-speed communications devices. |
| New methods for network visualizations enable change of perspectives and views Posted: 24 Feb 2022 08:26 AM PST Researchers have developed a new method for generating network layouts that allow for visualizing different information of a network in two- and three-dimensional virtual space and exploring different perspectives. The results could also facilitate future research on rare diseases by providing more versatile, comprehensible representations of complex protein interactions. |
| Visualization of the origin of magnetic forces by atomic resolution electron microscopy Posted: 24 Feb 2022 08:26 AM PST Scientists have observed atomic magnetic fields, the origin of magnetic forces, for the first time using an innovative Magnetic-field-free Atomic-Resolution STEM they developed. |
| How a single nerve cell can multiply Posted: 24 Feb 2022 08:26 AM PST Neurons are constantly performing complex calculations to process sensory information and infer the state of the environment. For example, to localize a sound or to recognize the direction of visual motion, individual neurons are thought to multiply two signals. However, how such a computation is carried out has been a mystery for decades. Researchers have now discovered in fruit flies the biophysical basis that enables a specific type of neuron to multiply two incoming signals. This provides fundamental insights into the algebra of neurons -- the computations that may underlie countless processes in the brain. |
| Fingertip sensitivity for robots Posted: 24 Feb 2022 08:26 AM PST Striving to improve touch sensing in robotics, scientists developed a thumb-shaped sensor with a camera hidden inside and trained a deep neural network to infer its haptic contact information. When something touches the finger, the system constructs a three-dimensional force map from the visible deformations of its flexible outer shell. This research invention significantly improves a robot finger's haptic perception, coming ever closer to the sense of touch of human skin. |
| Navigation tools could be pointing drivers to the shortest route — but not the safest Posted: 23 Feb 2022 01:45 PM PST Time for a road trip. You punch the destination into your GPS and choose the suggested route. But is this shortest route the safest? Not necessarily, according to new findings. |
| New artificial intelligence tool detects often overlooked heart diseases Posted: 23 Feb 2022 10:35 AM PST Physician-scientists have created an artificial intelligence (AI) tool that can effectively identify and distinguish between two life-threatening heart conditions that are often easy to miss: hypertrophic cardiomyopathy and cardiac amyloidosis. |
| Pioneering simulations focus on HIV-1 virus Posted: 23 Feb 2022 10:34 AM PST First-ever biologically authentic computer model was completed of the HIV-1 virus liposome. Key finding from the simulations is the formation of sphingomyelin and cholesterol rich microdomains. HIV-1 is known to preferentially bud from regions of the host cell membrane where these constituents are in high abundance. Scientists are hopeful this basic research into viral envelopes can help efforts to develop new HIV-1 therapeutics, as well as laying a foundation for study of other enveloped viruses such as the novel coronavirus. |
| A Minecraft build can be used to teach almost any subject Posted: 23 Feb 2022 08:12 AM PST A professor has used Minecraft to teach a class on the history and culture of modernity. The course was based entirely within the game server, with instructions, in-class communication and course work almost exclusively carried out within the Minecraft world and over the messaging app Discord. This new pedagogical framework presented the researchers with the opportunity to see how the students used the game to achieve academic goals. |
| Risks of using AI to grow our food are substantial and must not be ignored, warn researchers Posted: 23 Feb 2022 08:12 AM PST Artificial intelligence (AI) is on the cusp of driving an agricultural revolution, and helping confront the challenge of feeding our growing global population in a sustainable way. But researchers warn that using new AI technologies at scale holds huge risks that are not being considered. |
| Sensor breakthrough paves way for groundbreaking map of world under Earth surface Posted: 23 Feb 2022 08:12 AM PST An object hidden below ground has been located using quantum technology - a long-awaited milestone with profound implications for industry, human knowledge and national security. |
| Monitoring Arctic permafrost with satellites, supercomputers, and deep learning Posted: 22 Feb 2022 10:54 AM PST Using deep learning and supercomputers, researchers have been able to identify and map 1.2 billion ice wedge polygons in the Arctic permafrost based on satellite imagery. The data helps establish a baseline from which to detect changes to the region. The researchers trained a deep learning system to identify Arctic features and TACC's Longhorn supercomputer to analyze the data. The ice wedge data will be available for rapid analysis on the new Permafrost Discovery Gateway. |
| Posted: 20 Feb 2022 04:54 PM PST A new accelerator chip called 'Hiddenite' that can achieve state-of-the-art accuracy in the calculation of sparse 'hidden neural networks' with lower computational burdens has now been developed. By employing the proposed on-chip model construction, which is the combination of weight generation and 'supermask' expansion, the Hiddenite chip drastically reduces external memory access for enhanced computational efficiency. |
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