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Signaling the Future, Cell Phones Gain Limited Satellite-Link Capabilities

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Engineering 2023年第9期28卷 4-6页

作者： Mitch leslie Senior Technology Writer

On 13 December 2022,a couple was driving through the Angeles National Forest near Los Angeles,CA,USA,when their car slid off the road,plowed 100 m down a steep hillside,and landed upside down at the bottom of a canyon[1].Although the couple suffered only minor injuries,they were trapped in the canyon,and in the remote area the passenger could not get any reception on her iPhone 14 cellular ***,she was able to send an SOS through a new feature on the phone that routes such messages via satellites[2].Rescuers alerted to the couple’s location airlifted them out of the canyon later the same day.

关键词： Rescue injuries driving

US Regulators Clash Over 5G Rollout and Aircraft Safety

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Engineering 2022年第8期8卷 6-8页

作者： Mitch leslie 机构不祥

Late in 2021,US wireless companies were set to dramatically increase the performance of their fifth generation(5G)*** they had been offering 5G service since 2019,they were transmitting data in sections of the electromagnetic spectrum that often are no faster than the fourth generation(4G)or that provide restricted coverage[1,2].On 5 December 2021,the two biggest companies,AT&T and Verizon,were scheduled to expand into the C-band,a range of mid-band frequencies often dubbed the"sweet spot"for wireless because it combines high speed with broad coverage(Fig.1)[2].

关键词： companies offering faster

Hacking Contests Offer Big Payouts for Exposing Security Flaws

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Engineering 2022年第10期17卷 10-12页

作者： Mitch leslie Senior Technology Writer

Like any competitor,Yueqi Chen was anxious as he awaited the chance to demonstrate his skill in *** was the afternoon of 19May 2022,and Chen,then a visiting fellow in computer science at Northwestern University in Evanston,IL,USA,was sitting at a cloth-draped table in front of a small audience at Pwn2Own2022 Vancouver,a computer hacking competition held at the Vancouver Sheraton Wall Centre in Canada [1].

关键词： Canada computer Vancouver

With Great Expectations, Webb Telescope Finally Lifts Off

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Engineering 2022年第11期8卷 3-5页

作者： Mitch leslie Senior Technology Writer

Over the last 30 years,the Hubble Space Telescope has revolutionized astronomy and awed the public with gorgeous photos of the *** expect even bigger achievements from Hubble’s successor,the James Webb Space Telescope(JWST),which blasted off atop an Ariane 5 rocket from the Guiana Space Center in Kourou,French Guiana,on December 25,2021(Fig.1)[1].

关键词： Webb Great astronomy

Construction Industry Innovation Takes Aim at Reducing Carbon Emissions

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Engineering 2022年第12期19卷 7-10页

作者： Mitch leslie Senior Technology Writer

With only 18 floors,Mjøstårnet,a ruddy blonde building in Brummundal,Norway(Fig.1),is dwarfed by modern *** is not even the tallest building in *** the structure,which includes offices,apartments,and a hotel,stands out for another reason—it is built almost entirely of wood[1].Instead of the usual steel or concrete,the building’s beams,columns,and trusses are made from glulam,produced by gluing pieces of wood together with the grain in parallel[2].The lower floors,walls,stairs,and elevator shafts are also constructed of wood[3].Only the floors of the upper stories,which contain the apartments,are concrete to increase stability and improve acoustics[4].For three years after its completion in 2019,the 85.4 m Mjøstårnet was the world’s tallest timber building,but the Ascent MKE tower in Milwaukee,WI,USA,which opened in mid-2022,is just over 1 m taller[5].More than 1300 other so-called mass timber buildings,which substitute engineered wood products such as glulam for steel and concrete,are currently under construction in the United States alone[6].

关键词： floor entirely walls

Innovative Scanners Boost Medical Imaging Quality and Utility

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Engineering 2022年第9期16卷 3-5页

作者： Mitch leslie Senior Technology Writer

During his 30-year career,radiologist Philippe Douek has pored over thousands of images produced by computed tomography(CT)scanners,looking for signs of illness or *** the professor of radiology at the University Claude Bernard Lyon 1 in France,was wowed by the performance of a new type of device known as a photon-counting detector(PCD)CT *** and his colleagues have been putting prototype PCD machines through their paces,scanning animals,imaging dummies,and even Douek’s *** images produced with the technology“are much more detailed,”he said.

关键词： scanner looking Scanner

New US Rules Promise to Unlock Hearing Aid Availability

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Engineering 2022年第7期8卷 7-9页

作者： Mitch leslie Senior Technology Writer

One day in late 2022 or early 2023,a customer somewhere in the United States will make history by purchasing the first pair of hearing aids sold over the counter(OTC).For more than 40 years,these devices have been available in the United States and many other countries mainly through audiologists or other hearing *** updated regulations scheduled for enactment later this year by the Food and Drug Administration(FDA),the US agency that oversees drugs and medical devices,will allow retailers to sell hearing aids directly to consumers[1].

关键词： drugs Promise hearing

Pandemic Scrambles the Semiconductor Supply Chain

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Engineering 2022年第2期8卷 10-12页

作者： Mitch leslie Senior Technology Writer

The automaker Ford was forced to halt production of 60000–70000 mostly built F-150 pickups that it could not complete[1].Its competitor General Motors removed features from some new models and shut down many of its plants for weeks and even months[2,3].Apple announced that it was cutting iPhone produc-tion by more than 10%[4].For some Canadian customers,the wait for new refrigerators and other appliances stretched to a year or more[5].

关键词： Supply removed mostly

Robots Tackle DARPA Underground Challenge

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Engineering 2022年第6期8卷 2-4页

作者： Mitch leslie Senior Technology Writer

In a narrow passageway beneath the city of Louisville, KY, USA, a meter-tall robot with a yellow, rectangular body and four limbs that resemble a dog’s legs carefully descended a rocky slope. But as the robot attempted to turn, it lost its footing and tumbled down the slope, landing on its side. A modified commercial model known as‘‘Spot,”the machine almost immediately began extending and rotating its legs, pushing against the floor of the passageway. In about 40 s, it stood upright again and resumed exploring the passage.

关键词： robot beneath DARPA