In the 1920s, Erwin Schrödinger wrote an equation that predicts how particles-turned-waves should behave. Now, researchers are perfectly recreating those predictions in the lab

A century ago, Albert Einstein suggested that the universe might contain ripples in space-time, known as gravitational waves – but then he changed his mind

Experiments in a state-of-the-art wave tank suggest we have underestimated the potential size and power of rogue waves and the risk they pose to offshore infrastructure

Zinc nanoparticles, a common sunscreen ingredient, can make plants more resilient to climate change – in a surprising way

Title: Hearing Persists at End of Life, Brain Waves of Hospice Patients Show
Category: Health News
Created: 8/26/2020 12:00:00 AM
Last Editorial Review: 8/27/2020 12:00:00 AM

Title: Heat Waves That Threaten Lives Will Be Common by 2100
Category: Health News
Created: 8/26/2022 12:00:00 AM
Last Editorial Review: 8/26/2022 12:00:00 AM

Lightning strikes near Earth give rise to electromagnetic waves called “whistlers” that can carry energy high enough above our planet to pose a risk to satellites and astronauts

Nearly imperceptible quantum flickers used to limit how precisely we could detect the way space-time ripples, but squeezing the laser light used in detectors overcomes this and doubles the number of gravitational waves we can see

Tech expert Kurt “CyberGuy" Knutsson discusses how MAB Robotics' Honey Badger 4.0, a versatile robot, now walks underwater with amphibious skills.

Rats perform better on memory tests when certain brainwave-producing neurons are stimulated while they sleep. If we can boost these brainwaves in people, it could help treat memory impairments in those with dementia

Jesse Watters takes a look at the administration that President-elect Trump is assembling and how they're planning on changing Washington on “Jesse Watters Primetime.”

In 6G telecom research today, a crucial portion of wireless spectrum has been neglected: the Frequency Range 3, or FR3, band. The shortcoming is partly due to a lack of viable software and hardware platforms for studying this region of spectrum, ranging from approximately 6 to 24 gigahertz. But a new, open-source wireless research kit is changing that equation. And research conducted using that kit, presented last week at a leading industry conference, offers proof of viability of this spectrum band for future 6G networks.

In fact, it’s also arguably signaling a moment of telecom industry re-evaluation. The high-bandwidth 6G future, according to these folks, may not be entirely centered around difficult millimeter wave-based technologies. Instead, 6G may leave plenty of room for higher-bandwidth microwave spectrum tech that is ultimately more familiar and accessible.

The FR3 band is a region of microwave spectrum just shy of millimeter-wave frequencies (30 to 300 GHz). FR3 is also already very popular today for satellite Internet and military communications. For future 5G and 6G networks to share the FR3 band with incumbent players would require telecom networks nimble enough to perform regular, rapid-response spectrum-hopping.

Yet spectrum-hopping might still be an easier problem to solve than those posed by the inherent physical shortcomings of some portions of millimeter-wave spectrum—shortcomings that include limited range, poor penetration, line-of-sight operations, higher power requirements, and susceptibility to weather.

Pi-Radio’s New Face

Earlier this year, the Brooklyn, N.Y.-based startup Pi-Radio—a spinoff from New York University’s Tandon School of Engineering—released a wireless spectrum hardware and software kit for telecom research and development. Pi-Radio’s FR-3 is a software-defined radio system developed for the FR3 band specifically, says company co-founder Sundeep Rangan.

“Software-defined radio is basically a programmable platform to experiment and build any type of wireless technology,” says Rangan, who is also the associate director of NYU Wireless. “In the early stages when developing systems, all researchers need these.”

For instance, the Pi-Radio team presented one new research finding that infers direction to an FR3 antenna from measurements taken by a mobile Pi-Radio receiver—presented at the IEEE Signal Processing Society‘s Asilomar Conference on Signals, Systems and Computers in Pacific Grove, Calif. on 30 October.

According to Pi-Radio co-founder Marco Mezzavilla, who’s also an associate professor at the Polytechnic University of Milan, the early-stage FR3 research that the team presented at Asilomar will enable researchers “to capture [signal] propagation in these frequencies and will allow us to characterize it, understand it, and model it... And this is the first stepping stone towards designing future wireless systems at these frequencies.”

There’s a good reason researchers have recently rediscovered FR3, says Paolo Testolina, postdoctoral research fellow at Northeastern University’s Institute for the Wireless Internet of Things unaffiliated with the current research effort. “The current scarcity of spectrum for communications is driving operators and researchers to look in this band, where they believe it is possible to coexist with the current incumbents,” he says. “Spectrum sharing will be key in this band.”

Rangan notes that the work on which Pi-Radio was built has been published earlier this year both on the more foundational aspects of building networks in the FR3 band as well as the specific implementation of Pi-Radio’s unique, frequency-hopping research platform for future wireless networks. (Both papers were published in IEEE journals.)

“If you have frequency hopping, that means you can get systems that are resilient to blockage,” Rangan says. “But even, potentially, if it was attacked or compromised in any other way, this could actually open up a new type of dimension that we typically haven’t had in the cellular infrastructure.” The frequency-hopping that FR3 requires for wireless communications, in other words, could introduce a layer of hack-proofing that might potentially strengthen the overall network.

Complement, Not Replacement

The Pi-Radio team stresses, however, that FR3 would not supplant or supersede other new segments of wireless spectrum. There are, for instance, millimeter wave 5G deployments already underway today that will no doubt expand in scope and performance into the 6G future. That said, the ways that FR3 expand future 5G and 6G spectrum usage is an entirely unwritten chapter: Whether FR3 as a wireless spectrum band fizzles, or takes off, or finds a comfortable place somewhere in between depends in part on how it’s researched and developed now, the Pi-Radio team says.

“We’re at this tipping point where researchers and academics actually are empowered by the combination of this cutting-edge hardware with open-source software,” Mezzavilla says. “And that will enable the testing of new features for communications in these new frequency bands.” (Mezzavilla credits the National Telecommunications and Information Administration for recognizing the potential of FR3, and for funding the group’s research.)

By contrast, millimeter-wave 5G and 6G research has to date been bolstered, the team says, by the presence of a wide range of millimeter-wave software-defined radio (SDR) systems and other research platforms.

“Companies like Qualcomm, Samsung, Nokia, they actually had excellent millimeter wave development platforms,” Rangan says. “But they were in-house. And the effort it took to build one—an SDR at a university lab—was sort of insurmountable.”

So releasing an inexpensive open-source SDR in the FR3 band, Mezzavilla says, could jump start a whole new wave of 6G research.

“This is just the starting point,” Mezzavilla says. “From now on we’re going to build new features—new reference signals, new radio resource control signals, near-field operations... We’re ready to ship these yellow boxes to other academics around the world to test new features and test them quickly, before 6G is even remotely near us.”

This story was updated on 7 November 2024 to include detail about funding from the National Telecommunications and Information Administration.

Zinc nanoparticles, a common sunscreen ingredient, can make plants more resilient to climate change – in a surprising way

In a recent study, researchers from Helmholtz Munich and Augsburg University Hospital demonstrated that nocturnal heat significantly raises the risk of stroke.

Khoj Resorts is proud to announce the upcoming launch of Khoj Resort Allana, a premier luxury destination nestled along the serene coast of the Arabian Sea. Poised to redefine the standards of hospitality in Pakistan, Khoj Resort Allana offers an unparalleled experience that blends world-class amenities with the natural beauty of the country’s pristine beachside location. Set against the stunning backdrop of the Arabian Sea, this exclusive resort will provide guests with a taste of luxury that rivals the finest international destinations. From rejuvenating spa treatments to a variety of exquisite dining options and private beach cabanas, Khoj Resort Allana promises an oasis of relaxation, adventure, and indulgence. Guests can look forward to an array of bespoke services, including personalized honeymoon packages, signature wellness treatments at the resort’s spa, Lehr, and a variety of dining experiences at Dastaan, the all-day dining restaurant. Whether you’re seeking a romantic geta...

     The last three decades revealed a new phenomenon in the field of English literature. More and more Indian, Chinese and African origin...

Berlin ; Boston : De Gruyter, [2023]

Durham : Duke University Press, [2023]

Justices R. Mahadevan and Mohammed Shaffiq refrain from stalling the conduct of the race, they permit TN government to conduct the race with certain conditions

'I thought of a suppressed country and a free world.''If we travel from one to another, what will that road look like?''What colours, music there will be? What kind of people would you see?'

'On the set, Ranveer and I got along really well. Ten days after the release, Ranveer messaged me and said, you have killed the scene! For someone like him to message me just says how supportive person he is of newcomers.'

'I have nostalgia for Ladakhi culture, which is common to both Muslims and Buddhists.''It is kind of a Buddhist way of life. You are compassionate and nice to each other.''You are good human beings.'

Produced by WIRED Brand Lab with Toyota Tundra | Chasing the perfect wave and a world title, pro surfer Ezekiel Lau, spotlights the innovative technologies he uses to maximize his performance on the World Surf League circuit.

What is a heatwave condition? Why are Indian cities, towns and villages vulnerable both in the hills and the plains? Will notifying it as a State-specific disaster help? Why is it important to have a focused management plan in place?

IEEE / Institute of Electrical and Electronics Engineers Incorporated

IEEE / Institute of Electrical and Electronics Engineers Incorporated

IEEE / Institute of Electrical and Electronics Engineers Incorporated

Practically omnipresent, thanks to human activity, radio frequency is the new area of focus for energy harvesting technology

Katia Parodi describes an innovative technique for improving ion-beam therapy

With 52 brands and their 100 watches, the recently concluded Geneva Watch Days puts the spotlight on new trends in horology

The event, organized by the Surfing Swami Foundation and hosted by the Mantra Surf Club, will feature top Indiansurfers competing in various categories

Lewis Library - ML3917.A78 M35 2018

Dewey Library - QC174.12.B35525 2019

An influx of pollution from Asia in the western United States and more frequent heat waves in the eastern U.S. are responsible for the persistence of smog in these regions over the past quarter century despite laws curtailing the emission of smog-forming chemicals from automobile tailpipes and factories.

In recent months, a number of initiatives aimed at speeding up the development of the wave energy sector have been launched in the U.S. and Europe. As part of the ongoing work to establish a viable United States wave energy industry, the National Renewable Energy Laboratory (NREL) and Sandia National Laboratories (SANDIA) are working on the creation of a sophisticated open-source modeling tool known as WEC-Sim — and the U.S. Department of Energy is also enlisting the coding community to help in its development. Meanwhile, the European WavePOD project is an industry-wide initiative that aims to solve the problem of converting captured wave energy into electricity by creating a "standardised self-contained offshore electricity generator for the wave industry."

     The last three decades revealed a new phenomenon in the field of English literature. More and more Indian, Chinese and African origin...

Seventeen years after the Supreme Court ruled that the government cannot restrict content on radio, it remains impossible for independent news to be aired on radio channels. Navya P K reports.

Archives, Room Use Only - QC661.B85 1994

Archives, Room Use Only - TK5451.S33 1876

Einstein’s general theory of relativity predicts the emission of gravitational waves by massive celestial bodies moving though space-time. For the past century gravitational waves have […]

The post Astronomers complete First Search for Visible Light Associated with Gravitational Waves appeared first on Smithsonian Insider.

This animation shows how binary neutron stars warp space-time to create gravitational waves, then collide and explode into a visible kilonova, which can be detected […]

The post Astronomers see light show associated with gravitational waves appeared first on Smithsonian Insider.

Yung-An Huang, Chih-Hsuan Hsu, Ho-Chieh Chiu, Pei-Yu Hsi, Chris T. Ho, Wei-Lun Lo, and Eric Hwang

Microtubule (MT) is the most abundant cytoskeleton in neurons and controls multiple facets of their development. While the MT-organizing center (MTOC) in mitotic cells is typically located at the centrosome, MTOC in neurons switches to non-centrosomal sites. A handful of cellular components have been shown to promote non-centrosomal MT (ncMT) formation in neurons, yet the regulation mechanism remains unknown. Here we demonstrate that the small GTPase Ran is a key regulator of ncMTs in neurons. Using an optogenetic tool that enables light-induced local production of RanGTP, we demonstrate that RanGTP promotes ncMT plus-end growth along the neurite. Additionally, we discovered that actin waves drive the anterograde transport of RanGTP. Pharmacological disruption of actin waves abolishes the enrichment of RanGTP and reduces growing ncMT plus-ends at the neurite tip. These observations identify a novel regulation mechanism of ncMTs and pinpoint an indirect connection between the actin and MT cytoskeletons in neurons.

Heatwaves in Europe are likely to become more frequent and devastating, according to recent research. Climate change will lead to extended periods of high day and night-time temperatures, coupled with high humidity, and will particularly affect the Mediterranean coast and southern European river basins, where there are many densely populated urban areas.