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Archive for the ‘computing’ category: Page 140

Jan 13, 2024

Why does depression cause difficulties with learning?

Posted by in categories: biotech/medical, computing, mathematics, neuroscience

When learning, patients with schizophrenia or depression have difficulty making optimal use of information that is new to them. In the learning process, both groups of patients give greater weight to less important information and, as a result, make less than ideal decisions.

This was the finding of a several-months-long study conducted by a team led by neuroscientist Professor Dr. med. Markus Ullsperger from the Institute of Psychology at Otto von Guericke University Magdeburg in collaboration with colleagues from the University Clinic for Psychiatry & Psychotherapy and the German Center for Mental Health.

By using electroencephalography (EEG) and complex mathematical computer modeling, the team of researchers discovered that learning deficits in depressive and schizophrenic are caused by diminished/reduced flexibility in the use of new information.

Jan 13, 2024

First unhackable shopping transactions carried out on quantum internet

Posted by in categories: computing, internet, quantum physics

A secure exchange between a merchant and a buyer has been successfully tested as a proof of concept using a small quantum computing network in China.

By Karmela Padavic-Callaghan

Jan 12, 2024

This New Semiconductor Could Revolutionize Computing

Posted by in categories: computing, open access

Potentially good technology if it makes it to market. A new semiconductor would be great!


Researchers at the Georgia Institute for Technology have found a new semiconductor that’s a really good candidate for making computers faster and smaller than ever. Amazingly enough, it works by combining graphene with silicon carbide, to give a material with a sensible band gap that still has a high thermal conductivity.

Continue reading “This New Semiconductor Could Revolutionize Computing” »

Jan 11, 2024

China develops ‘Star Wars’-style deflector plasma shield to defend drones

Posted by in categories: computing, drones, military

According to Chinese news sources, Chinese scientists have allegedly harnessed plasma to develop a working energy shield for drones and other military tech.


Chinese scientists have allegedly developed an energy shield to protect some of its military assets, the South China Morning Post (SCMP) reports. Utilizing a special kind of plasma, the energy shield is designed to resist potentially harmful microwaves from damaging delicate electronics. If the claims of its existence are true, the new shield is a significant leap in directed energy technology, especially in the ongoing aerial-to-anti-aerial arms race.

Continue reading “China develops ‘Star Wars’-style deflector plasma shield to defend drones” »

Jan 11, 2024

Quantum Leap: The New Frontier of Polymer Simulations

Posted by in categories: biological, chemistry, computing, encryption, mathematics, quantum physics

A new study shows how quantum computing can be harnessed to discover new properties of polymer systems central to biology and material science.

The advent of quantum computing is opening previously unimaginable perspectives for solving problems deemed beyond the reach of conventional computers, from cryptography and pharmacology to the physical and chemical properties of molecules and materials. However, the computational capabilities of present-day quantum computers are still relatively limited. A newly published study in Science Advances fosters an unexpected alliance between the methods used in quantum and traditional computing.

The research team, formed by Cristian Micheletti and Francesco Slongo of SISSA in Trieste, Philipp Hauke of the University of Trento, and Pietro Faccioli of the University of Milano-Bicocca, used a mathematical approach called QUBO (from “Quadratic Unconstraint Binary Optimization”) that is ideally suited for specific quantum computers, called “quantum annealers.”

Jan 11, 2024

How To Use the Emacs Editor in Linux

Posted by in category: computing

Emacs is one of the oldest and most versatile text editors. The GNU Emacs version was originally written in 1984 and is well known for its powerful and rich editing features. It can be customized and extended with different modes, enabling it to be used like an Integrated Development Environment (IDE) for programming languages such as Java, C, and Python.

For those who have used both the Vi and the user-friendly nano text editors, Emacs presents itself as an in-between. Its strengths and features resemble those of Vi, while its menus, help files, and command-keys compare with nano.

In this article, you’ll learn how to install Emacs on an Ubuntu 22.04 server and use it for basic text editing.

Jan 10, 2024

A magnetically actuated acoustic metamaterial

Posted by in categories: computing, engineering, space

Space coiling acoustic metamaterials are static and require manual reconfiguration for sound-field modulation. In a new report published in Communications Materials, Christabel Choi, and a team of scientists in computer science and engineering in the U.K., and Italy, developed an approach for active reconfiguration with standalone dynamics to space-coil unit cells known as dynamic meta-bricks.

The meta-bricks housed an actuatable, magnetorheological, elastomeric flap, to function like a switch and to directly regulate the transmitted ultrasound. The scientists showed the synergy between active and passive reconfigurability to develop multifunctional metamaterials with additional degrees of freedom, for design and implementation.

Jan 10, 2024

Three-dimensional integration of two-dimensional field-effect transistors

Posted by in category: computing

Monolithic three-dimensional integration of two-dimensional field-effect transistors enables improved integration density and multifunctionality to realize ‘More Moore’ and ‘More than Moore’ technologies.

Jan 10, 2024

MIT/Harvard spinout plans 10,000-qubit, error-corrected quantum computer by 2026

Posted by in categories: computing, quantum physics

QuEra, a quantum computing startup founded by researchers from Harvard and the Massachusetts Institute of Technology, recently released what may be the most ambitious quantum technology roadmap we’ve seen yet.

The company plans on releasing a quantum computer with 100 logical qubits and 10,000 physical qubits by 2026. It also claims this planned system will demonstrate “practical quantum advantage,” meaning they’d be capable of useful computation feats that classical, binary computers aren’t.

Jan 10, 2024

Single-Photon Source Marks Quantum Cryptography Gain

Posted by in categories: computing, encryption, engineering, internet, nanotechnology, quantum physics

Producing photons one at a time on demand at room temperature is a key requirement for the rollout of a quantum internet—and the practical quantum computers that would undergird that network. The photons can be used as quantum bits (qubits), the quantum equivalent of classical computing’s 0s and 1s. Labs around the world have devised various ways to generate single photons, but they can involve complex engineering techniques such as doped carbon nanotubes or costly cryogenically-cooled conditions. On the other hand, less complicated techniques such as using traditional light sources do not provide the necessary level of control over single-photon emissions required for quantum networks and computers.

Now, researchers from Tokyo University of Science (TUS) and the Okinawa Institute of Science and Technology have collaborated to develop a prototype room temperature single-photon light source using standard materials and methods. The team described the fabrication of the prototype and its results in a recent issue of the journal Physical Review Applied.

“Our single-photon light source … increases the potential to create quantum networks—a quantum internet—that are cost-effective and accessible.” —Kaoru Sanaka, Tokyo University of Science.