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Sep 27, 2023

Electric Regional Aircraft Firm Signs Deal for 20 Cessna Grand Caravan EXs

Posted by in category: transportation

Surf Air Mobility Inc., a Southern California aerospace company devoted to developing regional air travel through the power of electrification, has placed an order for 20 Cessna Grand Caravan EX aircraft.

The Cessna Grand Caravan EX is designed and manufactured by Textron Aviation, a Textron Inc. (NYSE: TXT) company.

According to Textron, Surf Air Mobility has paid the deposit for the first of 100 aircraft with the option for an additional 50. The deliveries of the aircraft are expected to begin in the first half of 2024.

Sep 27, 2023

ChatGPT’s Choices: Overload or Overjoyed? Decoding Decision Dynamics

Posted by in category: robotics/AI

Summary: Researchers delved into how ChatGPT influences user decision-making, focusing on the ‘choice overload’ phenomenon. This condition emerges when an individual is overwhelmed by numerous options, often leading to decision paralysis or dissatisfaction.

The study found, however, that users preferred larger numbers of recommendations from ChatGPT over those from humans or online agents, appreciating the perceived accuracy of the chatbot’s suggestions. This points towards a new paradigm where AI-generated options might enhance decision-making processes across various industries.

Sep 27, 2023

Chi-Nu experiment ends, bolsters nuclear security and energy reactors

Posted by in categories: nuclear energy, physics, security

The results of the Chi-Nu physics experiment at Los Alamos National Laboratory have contributed essential, never-before-observed data for enhancing nuclear security applications, understanding criticality safety and designing fast-neutron energy reactors. The Chi-Nu project, a years-long experiment measuring the energy spectrum of neutrons emitted from neutron-induced fission, recently concluded the most detailed and extensive uncertainty analysis of the three major actinide elements—uranium-238, uranium-235 and plutonium-239.

“Nuclear and related nuclear chain reactions were only discovered a little more than 80 years ago, and experimenters are still working to provide the full picture of fission processes for the major actinides,” said Keegan Kelly, a physicist at Los Alamos National Laboratory. “Throughout the course of this project, we have observed clear signatures of fission processes that in many cases were never observed in any previous experiment.”

The Los Alamos team’s final Chi-Nu study, on the isotope uranium-238, was recently published in Physical Review C. The experiment measured uranium-238’s prompt fission spectrum: the energy of the neutron inducing the fission—the neutron that crashes into a nucleus and splits it—and the potentially wide-ranging energy distribution (the spectrum) of the neutrons released as a result. Chi-Nu focuses on “fast-neutron-induced” fission, with incident neutron energies in millions of electron volts, where there have typically been very few measurements.

Sep 27, 2023

Study shows that perception is driven by variability of neural activity in the sensory cortex

Posted by in categories: biotech/medical, neuroscience

The brain is a sophisticated biological system known to produce different experiences and perceptions via complex dynamics. Different brain regions and neural populations commonly work in tandem, communicating with each other to ultimately produce specific behaviors and sensations.

Researchers at University of Oxford and the Max Planck Institute for Dynamics and Self-Organization recently carried out a study aimed at better understanding the neural dynamics underpinning this communication between neural populations. Their findings, gathered in Nature Neuroscience, show that the probability that mice will perceive something is linked to a variability of neural activity in the brain region that processes the incoming stimulus information.

“Generally, we are interested in how the brain processes information,” James Rowland and Thijs Van der Plas, co-authors of the paper, told Medical Xpress. “The brain receives inputs from the senses which reflect what is happening in the world around it. It must then make sense of this information and use it to make decisions and take actions. To achieve this, the brain is built on a principle of division of labor, where different regions are specialized to perform distinct tasks.”

Sep 27, 2023

Researchers fabricate chip-based optical resonators with record low UV losses

Posted by in categories: chemistry, computing, particle physics, quantum physics

Researchers have created chip-based photonic resonators that operate in the ultraviolet (UV) and visible regions of the spectrum and exhibit a record low UV light loss. The new resonators lay the groundwork for increasing the size, complexity and fidelity of UV photonic integrated circuit (PIC) design, which could enable new miniature chip-based devices for applications such as spectroscopic sensing, underwater communication and quantum information processing.

“Compared to the better-established fields like telecom photonics and visible photonics, UV photonics is less explored even though UV wavelengths are needed to access certain atomic transitions in atom/ion-based quantum computing and to excite certain fluorescent molecules for biochemical sensing,” said research team member Chengxing He from Yale University. “Our work sets a good basis toward building photonic circuits that operate at UV wavelengths.”

In Optics Express, the researchers describe the alumina-based optical microresonators and how they achieved an unprecedented low loss at UV wavelengths by combining the right material with optimized design and fabrication.

Sep 27, 2023

New spin-squeezing techniques let atoms work together for better quantum measurements

Posted by in categories: particle physics, quantum physics

Opening new possibilities for quantum sensors, atomic clocks and tests of fundamental physics, JILA researchers have developed new ways of “entangling” or interlinking the properties of large numbers of particles. In the process they have devised ways to measure large groups of atoms more accurately even in disruptive, noisy environments.

The new techniques are described in a pair of papers published in Nature. JILA is a joint institute of the National Institute of Standards and Technology (NIST) and the University of Colorado Boulder.

“Entanglement is the holy grail of measurement science,” said Ana Maria Rey, a and a JILA and NIST Fellow. “Atoms are the best sensors ever. They’re universal. The problem is that they’re quantum objects, so they’re intrinsically noisy. When you measure them, sometimes they’re in one , sometimes they’re in another state. When you entangle them, you can manage to cancel the noise.”

Sep 27, 2023

Meta’s Threads struggles to grow amid rivalry with Elon Musk’s X, ranking ahead of only Tumblr

Posted by in category: Elon Musk

Threads ranks near the bottom of the most popular social apps and continues to trail X, according to Insider Intelligence’s first forecast of the Twitter clone.

Sep 27, 2023

Can you melt eggs? Quora’s AI says “yes,” and Google is sharing the result

Posted by in category: robotics/AI

When you type a question into Google Search, the site sometimes provides a quick answer called a Featured Snippet at the top of the results, pulled from websites it has indexed. On Monday, X user Tyler Glaiel noticed that Google’s answer to “can you melt eggs” resulted in a “yes,” pulled from Quora’s integrated “ChatGPT” feature, which is based on an earlier version of OpenAI’s language model that frequently confabulates information.

“This is actually hilarious,” Glaiel wrote in a follow-up post. “Quora SEO’d themselves to the top of every search result, and is now serving chatGPT answers on their page, so that’s propagating to the answers google gives.” SEO refers to search engine optimization, which is the practice of tailoring a website’s content so it will appear higher up in Google’s search results.

Sep 26, 2023

A Primer On Artificial Intelligence And Cybersecurity

Posted by in categories: cybercrime/malcode, robotics/AI

The topic of artificial intelligence’s rising involvement in our digital world and its associated opportunities and challenges have been the main topics of discussion at many security conferences and events in recent times. There is little doubt that humankind is on the verge of an era of exponential technological advancement, and AI is leading the way in the emerging digital world.

For cybersecurity, this tech trend has implications. In simple terms, artificial intelligence acts as a powerful catalyst and enabler for cybersecurity in our connected ecosystem.

Sep 26, 2023

Sphere Las Vegas introduces ‘life-like’ robots to interact with guests at venue

Posted by in category: robotics/AI

LAS VEGAS, Nev. (FOX5) — The Sphere in Las Vegas has introduced “life-like” robots that will interact with guests at the venue.

According to a news release, the Sphere describes the creation, which is named Aura, as the “world’s most advanced humanoid robot.”

Serving as the Sphere’s “spokesbot,” Aura will permanently reside in the grand atrium at the venue.

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