Stage 3 description for number identification supplementary services using Signalling System No. 7 : Stage 3 description for number identification supplementary services using Signalling System No.7 - Calling line identification presentation

Supplement on Guidelines for developing a sustainable e-waste management system
Source: Editor
Study Questions: Q13/5

Draft Supplement on Guidelines for developing a sustainable e-waste management system
Source: Editor
Study Questions: Q13/5

Supplement on Guidelines for developing a sustainable e-waste management system
Source: Egypt, Uganda

Single-ended line testing for digital subscriber lines

Improved impulse noise protection for digital subscriber line (DSL) transceivers

Handshake procedures for digital subscriber line transceivers

Very high speed digital subscriber line transceivers 2 (VDSL2)

Interface between the link layer and the physical layer for digital subscriber line (DSL) transceivers

Physical layer management for digital subscriber line transceivers

If hybrid cars can cut CO2 emissions on the road, can hybrid-electric planes do the same in the air? 

NASA is exploring that possibility, announcing this week two contracts to aviation startup Electra. The company claims it can meet NASA’s goal of reducing airliner fuel use by 60% to 80% by 2035 with a hybrid design that features generators powering motors to drive a large number of propellers. While this may sound like a convoluted way to power an airliner, the company claims it ultimately requires far less fuel than a traditional plane. 

Electra is already flying a two-seat test plane with this kind of system and will debut a nine-seater with a 380-mile range this week. It’s now partnering with American Airlines, Honeywell, Lockheed Martin, MIT, and the University of Michigan to guide the design and scale up the tech to airliners.

Electra’s grants, totaling about $3.5 million, are part of the $11.5 million, to four companies and one university for the first phase of its Advanced Aircraft for Sustainable Aviation (AACES) 2050 program. First announced in August 2023, AACES challenges companies to propose aircraft concepts that could help bring passenger and cargo plane emissions to zero by 2050.

The aviation industry has long touted zero-emission fuels (for example, jet fuel made from biomass, or hydrogen produced with green electricity) as the ultimate climate solution. It’s easier to make enough of these fuels if new planes need a lot less of them—hence NASA’s challenge to Electra and the other winners to develop radically more-efficient designs.

The case for electric-powered planes

A number of companies are developing electric airplanes, but most are for short-range air taxi services. Toyota-backed Joby Aviation, for example, promises to put a four-passenger plane into service as soon as 2025. Powered 100% by heavy batteries, packing about 1/40th as much energy per pound as jet fuel, Joby’s plane can fly 100 miles per charge.

Electra stands out as one of the few companies, alongside Sweden’s Heart Aerospace and Ampaire and Whisper Aero out of the U.S., testing different hybrid concepts to dramatically extend range. (NASA has also been testing hybrid tech with other companies.) Electra and its allies’ initial concept for NASA is a 114-seat airliner that can fly nearly 3,300 miles, says Electra’s vice president and general manager, JP Stewart. But he says the tech can scale to NASA’s largest target: carrying about 300 people up to around 8,600 miles.

Electra’s take on hybrid technology is called a “series hybrid.” On a traditional plane, each propeller (or jet engine) requires a big, expensive turbine that burns jet fuel. By using turbines to power generators instead, Electra can run more props using lightweight electric motors. Electra’s initial sketch has five propellers across each wing (plus three in the tail), which the company says can improve airflow and boost the wing’s ability to lift the plane—tech that’s already working on its two-seat prototype. For its NASA proposal, Electra envisions an airliner that uses this hybrid tech and a new design of the fuselage (the tube carrying passengers) to take off with smaller wings, which will produce less drag and save fuel in flight.

Another benefit of hooking a turbine to a generator, says Stewart, is that the turbine can run at its most-efficient speed throughout the flight. Airplane engines have to be very flexible, gunning it on takeoff and landing and running less intensely when the plane is cruising in the air. Turbines that power the propellers directly don’t have the flexibility to do both tasks efficiently; electric motors do. Finally, by adding batteries to the mix, the plane can use a smaller turbine that needs to produce just enough power for cruising, says Electra. For takeoff and landing, battery packs join in to provide the extra oomph only when needed.

Electra’s concept is just one of several ideas NASA has given the green light to. Another contract winner, JetZero, has proposed a liquid hydrogen-powered, “blended wing body” concept for a jetliner or cargo plane that ditches the traditional design of a metal tube with wings and a tail. Instead, it has a tail-less, triangular shape that looks a bit like a B2 Stealth Bomber and promises major fuel savings. 

Other winners include Georgia Institute of Technology, Pratt & Whitney (part of the RTX conglomerate), and Boeing-owned Aurora Flight Sciences, which are working on several engine and body technologies. (Aurora founder John Langford went on to found Electra in 2020.)

The task now for Electra, JetZero, and other winners is to produce a final airplane design in 18 months. Getting real planes in the air will take many more years.

New Technology Delivers Flawless Dolby Atmos Sound Over Your Power Lines  Forbes

Department of Performing Arts and Technology celebrates 100 years, looks to the future  N.C. State University Technician Online

Is technology improving airline customer service?  PhocusWire

2024 Transportation Annual Technology Baseline Update Now Available  NREL

How Tech Created a ‘Recipe for Loneliness’  The New York Times

‘For young people to thrive, they need strong ties to their community and easy access to mental health services,’ says NCI’s Dr April Hargreaves.

Read more: How this neuropsychologist is tackling the loneliness epidemic

Many online shopping sites offer free international shipping, which can save you a fortune when shopping online! Here are 20.

PABCO Roofing’s entire Signature Cut line, including Paramount, Cascade, and Paramount Advantage, has earned UL 2218 Class 4 impact resistance, offering enhanced durability and aesthetic appeal.

Kirt Linington didn’t follow a straight line to success in the roofing industry, and he’s sharing his insights with entrepreneurs everywhere.

Timberline Solar, a system that directly integrates solar technology into traditional roofing processes and materials, will initially be available in the Twin Cities metro area for purchase and installation by local roofers. 

IKO expands its Dynasty Cool Colors Plus line with five new shades that meet California's Cool Roof requirements, exceed reflectivity standards, boast impact resistance, and feature ArmourZone technology for high wind durability.

The U.S. Department of Labor is ramping up efforts to emphasize workplace safety during the holiday season and providing resources through OSHA to prevent on-the-job tragedies, especially for workers in construction, warehousing, and delivery roles. 

The EEOC has published “Promising Practices for Preventing Harassment in the Construction Industry,” a guideline recommending committed leadership, accountability, comprehensive policies, accessible complaint procedures, and tailored training to ensure a harassment-free workplace. 

2023 Young Gun Cody Kline sold his roofing business, conquered Mount Everest and is now on a second career in the roofing industry with commercialroofer.com.

MyABCsupply provides roofing contractors with an easy-to-use tool that gives ABC Supply customers 24/7 access to view the status of their orders and deliveries, including delivery photos.

Westlake Royal Roofing brings together the portfolios of the former Boral® North America roofing and DaVinci® Roofscapes lines to the 2022 IRE.

New single-ply membranes for roof replacement by Viking Products offers more options to roofing contractors.

Patented Tubos pipe extensions are now available in 2-, 3-, 4- and 5-inch diameters to accommodate most common vent stack sizes, saving time on the roof.

GAF's Timberline HDZ Reflector Series shingles are rated by the Cool Roof Rating Council and can be used to comply with Title 24's Cool Roof Requirements and the LA County Green Building Standards Code.

Tesla's solar products experienced additional declines in Q3 2023, though its energy storage is once again booming, according to the company's latest earnings report.

The new manufacturing facility, GAF Energy's second, will increase its capacity by 500% and bring total production of its solar shingle to 300 megawatts annually.

Community and company leaders held a ribbon-cutting ceremony at GAF Energy's new 450,000-square-foot Timberline Solar manufacturing facility in Georgetown, Texas.

RAFTR Roofing + Exteriors partnered with RoofMarketplace to streamline the roof claims process, using remote data and contractor feedback to simplify and reduce costs for homeowners.

A total of 10,000 square feet of roofing was involved in the Eleven project, which had to be coordinated vertically in a small footprint.

An owner's exit from a business will probably be the largest financial event of their life.

This acquisition marks the inaugural partnership for Skyline Roofing Partners, an Imperial Capital portfolio company.

After Hurricane Milton, businesses face cleanup and rebuilding. Following OSHA safety guidelines is crucial to protect workers from hazards like floods, downed power lines, and debris.

Understanding the eight aspects of planning a successful exit can make any transitions smoother for roofing contractors.

Fabral Metal Wall and Roof Systems introduced Sherwin-Williams WeatherXL, a two-coat silicone-modified polyester coating in 21 colors, offering enhanced durability, weather resistance, and color retention for various metal panels. 

FlashCo, the Sonoma County, Calif.-based manufacturer of roof flashing products, unveils a suite of safety-oriented, roof-mounted gear ensuring maximum worker protection and regulatory compliance.

SRS welcomes several special guests and a trio of country music bands, including the legendary duo Big & Rich, on stage at the Sugar Mill during the 2022 IRE.

The Garland Company unveiled Green-Lock Plus White high-performance adhesive to construct multi-ply modified bitumen roofing systems.

In County Essex, England, a man’s Ring camera captured a black cat's daring leap from a ledge to a shed roof, leaving viewers breathless as the feline hangs precariously before returning to safety.

Los mejores tenistas del año buscarán alzarse con el último título del año Leer

El tenista murciano afronta el debut en el torneo, con el que se cierra la temporada tenística, con la ilusión de alzarse por primera vez con el triunfo Leer

Carlos Alcaraz se enfrenta este miércoles a Andrey Rublev en el que será el segundo partido del español en las ATP Finals 2024 Leer

Hay vida más allá del negro si hablamos de delinear los ojos. ¿Arriesgado? Todo depende del qué y del cómo... Y de jugar con el maquillaje, por qué no. Leer

[New Times] Ethiopia's national flag carrier and largest Airbus operator in Africa, Ethiopian Airlines, has taken delivery of its first of four A350-1000 from Airbus in Toulouse, France, it is reported. The first of its kind to be operated by an African based operator, the A350-1000 will enable Ethiopian Airlines to enhance its premium service on key destinations including Washington D.C., London, Paris and Frankfurt.