Category: Engineering
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Did an ethical hacker prevent espionage by hacking CIA’s channel?
A glitch on X, formerly known as Twitter, could have opened a can of worms for the Central Intelligence Agency (CIA) had an ethical hacker on the microblogging website not sprung to action. The CIA’s official X account is linked to the agency’s Telegram channel, which invites intelligence and information from individuals in countries with…
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Nvidia’s AI bites nails as US bans AI chip sales to China
The US administration has gone forward with its objective of limiting China’s access to advanced chipsets made in the country by introducing further regulations. A year back, the US announced new laws prohibiting companies operating out of its soil from selling specific chips used in supercomputing and AI to Chinese corporations. The limitations also targeted…
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NASA starts planning of the Roman telescope’s future observations
A new sophisticated telescope will soon join the next generation of advanced space observatories. NASA is making preparations for the launch of its next major astronomical observatory, the Nancy Roman Space Telescope, scheduled for 2027. The agency has already begun working with the space community to prepare plans for observations using the Roman telescope. In…
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Scientists invent superlensing microscope without a superlens
Physicists at the University of Sydney Nano Institute in Australia have invented a superlensing microscope that does not actually use a superlens, a press release said. The invention is expected to help advance imaging in areas such as medical diagnostics, archaeology, and forensics. In the 17th century, Dutch microbiologist Antonie van Leeuwenhoek opened up a…
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Study reveals Mesolithic Europeans ate seaweed and freshwater plants
Ancient Europeans consumed seaweed, rich in dietary fiber and nutrition, long before it gained modern recognition as a superfood. Out of the 10,000 seaweed species globally, roughly 145 are currently consumed, primarily in Asian countries. The consumption of seaweed has been unheard of in European countries. However, a recent study contradicts the notion and revealed…
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Using AI to develop hydrogen fuel cell catalysts more efficiently and economically
Oct 18, 2023 (Nanowerk News) Proton exchange membrane hydrogen fuel cells (PEMFCs) used in hydrogen vehicles use expensive platinum catalysts to facilitate the oxygen reduction reaction at the anode. There are a vast number of elemental combinations and compositions that need to be explored to develop more efficient and cost-effective catalyst materials than platinum, and…
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Fault diagnosis of anti-friction bearings based on Bi-dimensional ensemble local mean decomposition and optimized dynamic least square support vector machine
In LSSVM, the Lagrangian function is constructed as follows18: $$ L\left( {w,b,\varepsilon_{i} ,\alpha_{i} } \right) = \frac{1}{2}\left( {\left\| w \right\|^{2} + C\sum\limits_{i = 1}^{n} {\varepsilon_{i}^{2} } } \right) – \sum\limits_{i = 1}^{n} {\alpha_{i} \left[ {y_{i} \left( { < w^{T} \cdot \phi (x_{i} ) > + b} \right) – 1 + \varepsilon_{i} } \right]} $$ (8)…
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Develop an empirical flow rate correlation to model wellbore storage phenomenon for wells produced at a constant wellhead pressure
The main objective of developing an approximate correlation is to develop a more applicable correlation which could be easily incorporated in complicated calculations, especially at early times. Considering the fact that the proposed correlation is able to predict the flow rate precisely at early times (as noted in Fig. 4), modeling of wellbore storage effect can…
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Machine learning risk estimation and prediction of death in continuing care facilities using administrative data
The primary outcome variable in this study was mortality within 60 days of a resident’s first COVID-19 test. We aimed to identify factors associated with mortality among continuing care residents in Alberta during the COVID-19 pandemic and develop machine learning models to improve risk prediction for mortality. In this study, we employed a diverse range of…
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Optimal placement criteria of actuators for hybrid mounting system on a non-aligned plate structure
Lumped parameter model Fig. 3 depicts the suggested analytical model of the smart composite plate structure with concurrent active path and passive path based on the source-path-receiver system. Paths consist of an active path and a passive path, where source denotes a vehicle engine. For active vibration control, the active path consists of a piezoelectric…