Category Physics

AI-based Tongue Imaging could help enable Non-Invasive Detection of Coronary Artery Disease

AI-based tongue imaging could help enable non-invasive detection of coronary artery disease
The tongue diagnosis instrument and collection process. 1: lens hood, 2: LED light resource, 3: high-definition camera, 4: chin support plate. Note. Use fixed standard camera parameters when shooting: the color temperature is 5,000 k, the color rendering index is 97, the frame rate is 1/125 s, the aperture is F/6.3, the exposure indicator scale is 0 or ±1. Credit: Frontiers in Cardiovascular Medicine (2024). DOI: 10.3389/fcvm.2024.1384977

Coronary artery disease (CAD) is the most common cause of illness-based death throughout the world. According to the World Health Organization, CAD causes 17.9 million deaths per year worldwide, nearly one-third of all illness-based deaths annually.

Coronary angiography is currently the best method of confirming a CAD diagnosis, but it is ex...

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Bubbling, frothing and sloshing: Long-Hypothesized Plasma Instabilities Finally Observed

Plasma jets illustration
An artist’s representation of plasma interacting with magnetic fields. (Image credit: Kyle Palmer / PPPL Communications Department)

Results could aid understanding of how black holes produce vast intergalactic jets. Scientists have observed new details of how plasma interacts with magnetic fields, potentially providing insight into the formation of enormous plasma jets that stretch between the stars.

Whether between galaxies or within doughnut-shaped fusion devices known as tokamaks, the electrically charged fourth state of matter known as plasma regularly encounters powerful magnetic fields, changing shape and sloshing in space...

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Generative AI brings us Closer to Automating Investment Expertise

Credit: CC0 Public Domain

Large language models (LLMs) such as ChatGPT and Google Gemini excel at being trained on large data-sets to generate informative responses to prompts. Yi Cao, an assistant professor of accounting at the Donald G. Costello College of Business at George Mason University, and Long Chen, associate professor and area chair of accounting at Costello, are actively exploring how individual investors can use LLMs to glean market insights from the dizzying array of available data about companies.

Their new working paper, appearing in SSRN Electronic Journal and co-authored with Jennifer Wu Tucker of the University of Florida and Chi Wan of University of Massachusetts Boston, examines AI’s ability to identify “peer firms,” or product market competitors in an industry.

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Scientists Invent a Hot-Emitter Transistor for Future High Performance, Low-Power, Multifunctional Devices

Chinese scientists invent a hot-emitter transistor
A hot-emitter transistor based on stimulated emission of heated carriers. Credit: IMR

Transistors, the building blocks of integrated circuits, face growing challenges as their size decreases. Developing transistors that use novel operating principles has become crucial to enhancing circuit performance.

Hot carrier transistors, which utilize the excess kinetic energy of carriers, have the potential to improve the speed and functionality of transistors. However, their performance has been limited by how hot carriers have traditionally been generated.

A team of researchers led by Prof. Liu Chi, Prof. Sun Dongming, and Prof...

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