Menu

Blog

Page 9120

Jan 27, 2019

‘Build the wall’ with fiber optics

Posted by in categories: materials, transportation

A concrete or steel wall along the southern border of the U.S. is not impenetrable; daily news programs show how concrete walls are burrowed under or driven over with car carriers and hydraulic ramps, while steel walls are breached with grappling hooks and inexpensive metal saws. And while a fiber-optic fence is also vulnerable to a physical cut, it can be discretely buried or placed along existing infrastructure, and (unlike concrete or steel) can fundamentally detect the location of a cut with high accuracy so that border patrol agents can be dispatched to understand the breach and apprehend the humans (easily distinguished from animals) crossing over the fence.


Let’s put our money and photonics technology to more effective use.

Read more

Jan 27, 2019

These Patients Had Sickle-Cell Disease. Experimental Therapies Might Have Cured Them

Posted by in categories: biotech/medical, genetics

Success against sickle-cell would be “the first genetic cure of a common genetic disease” and could free tens of thousands of Americans from agonizing pain.

Read more

Jan 27, 2019

Can AI Really Be a Game Changer in Cervical Cancer Screenings?

Posted by in categories: biotech/medical, health, information science, robotics/AI

An artificial intelligence solution (AI) can accurately identify precancerous changes that could require medical attention in images from a woman’s cervix. Researchers from the National Institutes of Health and Global Good developed the computer algorithm, which is called automated visual evaluation.

Researchers created the algorithm by using more than 60,000 cervical images from a National Cancer Institute (NCI) archive of photos collected during a cervical cancer screening study that was carried out in Costa Rica in the 1990s.

More than 9,400 women participated in that population study, with follow up that lasted up to 18 years. Because of the prospective nature of the study, the researchers said that they gained nearly complete information on which cervical changes became pre-cancers and which did not.

Continue reading “Can AI Really Be a Game Changer in Cervical Cancer Screenings?” »

Jan 26, 2019

AI is sending people to jail—and getting it wrong

Posted by in category: robotics/AI

Using historical data to train risk assessment tools could mean that machines are copying the mistakes of the past.

Read more

Jan 26, 2019

Scientists Create Liquid Fuel That Can Store The Sun’s Energy For Up to 18 Years

Posted by in categories: solar power, sustainability

No matter how abundant or renewable, solar power has a thorn in its side. There is still no cheap and efficient long-term storage for the energy that it generates.

The solar industry has been snagged on this branch for a while, but in the past year alone, a series of four papers has ushered in an intriguing new solution.

Scientists in Sweden have developed a specialised fluid, called a solar thermal fuel, that can store energy from the sun for well over a decade.

Continue reading “Scientists Create Liquid Fuel That Can Store The Sun’s Energy For Up to 18 Years” »

Jan 26, 2019

SpaceX Just Test Fired the Rocket That’ll Launch Its Crew Dragon

Posted by in category: space travel

But it’s only the first of a series of tests before astronauts are allowed to…

Read more

Jan 26, 2019

Blue Origin breaks ground for BE-4 factory

Posted by in category: space travel

WASHINGTON — As Blue Origin breaks ground on a new factory for producing rocket engines, the company says development of its BE-4 engine will be completed later this year.

Blue Origin held a groundbreaking ceremony in Huntsville, Alabama, Jan. 25 to formally mark the start of construction of a factory that will be used for building BE-4 engines. The company announced plans to build the factory there in June 2017, contingent on the selection of the engine by United Launch Alliance for its Vulcan rocket. ULA picked the BE-4 in September 2018.

The factory, scheduled for completion in March 2020, will build dozens of BE-4 engines a year for both Vulcan as well as Blue Origin’s own New Glenn vehicle. Both rockets are scheduled to make first launches in 2021. Vulcan will use two BE-4 engines in its first stage while New Glenn’s reusable first stage will be powered by seven BE-4 engines.

Read more

Jan 26, 2019

New Paper: A ‘Mirror Image’ of Our Universe Existed Before The Big Bang

Posted by in categories: cosmology, physics

The Big Bang didn’t just result in our familiar universe, according to a mind-bending new theory — it also generated a second “anti-universe” that extended backwards in time, like a mirror image of our own.

A new story in Physics World explores the new theory, which was proposed by a trio of Canadian physicists who say that it could explain the existence of dark matter.

The new theory, which is laid out in a recent paper in the journal Physical Review of Letters, aims to preserve a rule of physics called CPT symmetry. In the anti-universe before the Big Bang, it suggests, time ran backwards and the cosmos were made of antimatter instead of matter.

Continue reading “New Paper: A ‘Mirror Image’ of Our Universe Existed Before The Big Bang” »

Jan 26, 2019

Battling AI algorithm tested on a quantum computer for first time

Posted by in categories: information science, quantum physics, robotics/AI

One of the most powerful techniques in machine learning, generative adversarial networks, has been tested on a quantum computer for the first time.

Read more

Jan 26, 2019

Robot surgeons lack tactile sensation to replace humans

Posted by in categories: biotech/medical, robotics/AI

Prof Pugh is using motion-tracking sensors to test how trainee surgeons use the instruments, for example in a simulated hernia repair. Their performance is measured, videoed and compared with best practice at each stage, so they can understand where they need to improve.

“Like Olympic athletes, they can practise repeatedly until they understand the routine and where they need to improve. That is the goal in training surgeons.” The next step is to use sensors in real operations.

Being able to measure pressure will help create better surgical robots, says Richard Trimlett, a cardiothoracic surgeon and head of mechanical support at the Royal Brompton and Harefield Trust, London.

Read more