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IMAGE: Consuming spoiled beef is dangerous, but there are currently no simple and efficient methods to assess beef freshness. view more
Credit: Unsplash
Although beef is one of the most consumed foods around the world, eating it when it s past its prime is not only unsavory, but also poses some serious health risks. Unfortunately, available methods to check for beef freshness have various disadvantages that keep them from being useful to the public. For example, chemical analysis or microbial population evaluations take too much time and require the skills of a professional. On the other hand, non-destructive approaches based on near-infrared spectroscopy require expensive and sophisticated equipment. Could artificial intelligence be the key to a more cost-effective way to assess the freshness of beef?
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We ve all heard the adage, If at first you don t succeed, try, try again, but new research from Carnegie Mellon University and the University of Pittsburgh finds that it isn t all about repetition. Rather, internal states like engagement can also have an impact on learning.
The collaborative research, published in
Nature Neuroscience, examined how changes in internal states, such as arousal, attention, motivation, and engagement can affect the learning process using brain-computer interface (BCI) technology. Findings suggest that changes in internal states can systematically influence how behavior improves with learning, thus paving the way for more effective methods to teach people skills quickly, and to a higher level of proficiency.
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IMAGE: a) Energy levels used to achieve SCC. b) A schematic diagram of SCC readout. c) The excitation spectrum of the nitrogen-vacancy (NV) center used here at cryogenic temperature of 8?K.. view more
Credit: ZHANG Qi et al.
The team led by Professor DU Jiangfeng and Professor WANG Ya from the Chinese Academy of Sciences (CAS) Key Laboratory of Microscale Magnetic Resonance of the University of Science and Technology of China put forward an innovative spin-to-charge conversion method to achieve high-fidelity readout of qubits, stepping closer towards fault-tolerant quantum computing.
Quantum supremacy over classical computers has been fully exhibited in some specific problems, yet the next milestone, fault-tolerant quantum computing, still requires the accumulated logic gate error and the spin readout fidelity to exceed the fault-tolerant threshold. DU s team has resolved the first requirement in the nitrogen-vacancy (NV) center system [
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Technology can be biased, and its design can disadvantage certain demographic groups. While efforts to address bias and promote fairness in technologies are rapidly growing in a variety of technical disciplines, Achuta Kadambi argues that similar growth is not occurring fast enough for medical engineering. Although computer science companies terminate lucrative but biased facial recognition systems, biased medical devices continue to be sold as commercial products, writes Kadambi in a Perspective. Bias in medical devices results in undesirable performance variation across demographic groups and can greatly influence health inequality. For example, optical biosensors that use light to monitor vital signs like blood oxygenation have been shown to work differently on light versus dark skin. Since some of these measures relate to what could be serious medical prognoses, such a biased medical device could lead to disparate mortality outcomes for Black and dark-skinned patients
Credit: Professor Wonho Choe, KAIST.
A study by KAIST researchers revealed that an ionized gas jet blowing onto water, also known as a plasma jet , produces a more stable interaction with the water s surface compared to a neutral gas jet. This finding reported in the April 1 issue of
Nature will help improve the scientific understanding of plasma-liquid interactions and their practical applications in a wide range of industrial fields in which fluid control technology is used, including biomedical engineering, chemical production, and agriculture and food engineering.
Gas jets can create dimple-like depressions in liquid surfaces, and this phenomenon is familiar to anyone who has seen the cavity produced by blowing air through a straw directly above a cup of juice. As the speed of the gas jet increases, the cavity becomes unstable and starts bubbling and splashing.