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Feb 28, 2024

Hyundai Confirms Its Georgia ‘Metaplant’ EV Factory Is Opening Early

Posted by in category: transportation

As other automakers fret over demand, Hyundai Motor Group is ahead of schedule on its Savannah, Georgia EV factory.

Feb 28, 2024

Former AMD Radeon boss says NVIDIA is the GPU cartel

Posted by in category: computing

“They are the GPU cartel and they control all supply” Scott Herkelman, former AMD Radeon chief, has something to say about NVIDIA practices. Scott Herkelman & Jensen Huang, Source: AMD/NVIDIA According to the article on Wall Street Journal (via Tom’s Hardware), NVIDIA might be delaying data center GPU orders if customers start eyeing other options. […].

Feb 28, 2024

Colossal Magnetic Field Detected in Nuclear Matter

Posted by in category: futurism

Collisions of heavy ions briefly produced a magnetic field times stronger than Earth’s, and it left observable effects.

Feb 28, 2024

Rainproof Water Striders

Posted by in category: futurism

Researchers reveal how water striders survive collisions with raindrops that are much larger than the insects—a result that could help in understanding how microplastics are transported in water.

Feb 28, 2024

Fault-Tolerant Quantum Error Correction without Measurements

Posted by in category: quantum physics

A proposed recipe for quantum error correction removes the need for time-consuming measurements of qubits, replacing them with copying and feedback steps instead.

Feb 28, 2024

Nonreciprocal Frustration Meets Geometrical Frustration

Posted by in categories: education, energy, mathematics, physics

New theoretical work establishes an analogy between systems that are dynamically frustrated, such as glasses, and thermodynamic systems whose members have conflicting goals, such as predator–prey ecosystems.

A system is geometrically frustrated when its members cannot find a configuration that simultaneously minimizes all their interaction energies, as is the case for a two-dimensional antiferromagnet on a triangular lattice. A nonreciprocal system is one whose members have conflicting, asymmetric goals, as exemplified by an ecosystem of predators and prey. New work by Ryo Hanai of Kyoto University, Japan, has identified a powerful mathematical analogy between those two types of dynamical systems [1]. Nonreciprocity alters collective behavior, yet its technological potential is largely untapped. The new link to geometrical frustration will open new prospects for applications.

To appreciate Hanai’s feat, consider how different geometric frustration and nonreciprocity appear at first. Frustration defies the approach that physics students are taught in their introductory classes, based on looking at the world through Hamiltonian dynamics. In this approach, energy is to be minimized and states of matter characterized by their degree of order. Some of the most notable accomplishments in statistical physics have entailed describing changes between states—that is, phase transitions. Glasses challenge that framework. These are systems whose interactions are so spatially frustrated that they cannot find an equilibrium spatial order. But they can find an order that’s “frozen” in time. Even at a nonzero temperature, everything is stuck—and not just in one state. Many different configurations coexist whose energies are nearly the same.

Feb 28, 2024

A General Equation of State for a Quantum Simulator

Posted by in categories: information science, particle physics, quantum physics

Researchers have characterized the thermodynamic properties of a model that uses cold atoms to simulate condensed-matter phenomena.

Feb 28, 2024

Light stimulates a new twist for synthetic chemistry

Posted by in categories: biotech/medical, chemistry, computing

Molecules that are induced by light to rotate bulky groups around central bonds could be developed into photo-activated bioactive systems, molecular switches, and more.

Researchers at Hokkaido University, led by Assistant Professor Akira Katsuyama and Professor Satoshi Ichikawa at the Faculty of Pharmaceutical Sciences, have extended the toolkit of synthetic chemistry by making a new category of molecules that can be induced to undergo an internal rotation on interaction with . Similar processes are believed to be important in some natural biological systems.

Synthetic versions might be exploited to perform photochemical switching functions in molecular computing and sensing technologies or in bioactive molecules, including drugs. Their report is pending in Nature Chemistry.

Feb 28, 2024

Pythagoras was wrong: There are no universal musical harmonies, study finds

Posted by in category: media & arts

The tone and tuning of musical instruments has the power to manipulate our appreciation of harmony, new research shows. The findings challenge centuries of Western music theory and encourage greater experimentation with instruments from different cultures.

According to the Ancient Greek philosopher Pythagoras, ‘consonance’—a pleasant-sounding combination of notes—is produced by special relationships between simple numbers such as 3 and 4. More recently, scholars have tried to find psychological explanations, but these ‘integer ratios’ are still credited with making a chord sound beautiful, and deviation from them is thought to make music ‘dissonant,’ unpleasant sounding.

But researchers from the University of Cambridge, Princeton and the Max Planck Institute for Empirical Aesthetics, have now discovered two key ways in which Pythagoras was wrong.

Feb 28, 2024

Linking environmental influences, genetic research to address concerns of genetic determinism of human behavior

Posted by in categories: biotech/medical, genetics, neuroscience

It has long been known that there is a complex interplay between genetic factors and environmental influences in shaping behavior. Recently it has been found that genes governing behavior in the brain operate within flexible and contextually responsive regulatory networks. However, conventional genome-wide association studies (GWAS) often overlook this complexity, particularly in humans where controlling environmental variables poses challenges.

In a new perspective article published on February 27 in the open-access journal PLOS Biology by researchers from the University of Illinois Urbana-Champaign and Rutgers University, U.S., the importance of integrating environmental effects into genetic research is underscored. The authors discuss how failure to do so can perpetuate deterministic thinking in genetics, as historically observed in the justification of eugenics movements and, more recently, in cases of racially motivated violence.

The authors propose expanding GWAS by incorporating environmental data, as demonstrated in studies on aggression in , in order to get a broader understanding of the intricate nature of gene-environment interactions. Additionally, they advocate for better integration of insights from animal studies into human research. Animal experiments reveal how both genotype and environment shape brain gene regulatory networks and subsequent behavior, and these findings could better inform similar experiments with people.

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