Landing multi-rotor drones smoothly is difficult. Complex turbulence is created by the airflow from each rotor bouncing off the ground as the ground grows ever closer during a descent. This turbulence is not well understood nor is it easy to compensate for, particularly for autonomous drones. That is why takeoff and landing are often the two trickiest parts of a drone flight. Drones typically wobble and inch slowly toward a landing until power is finally cut, and they drop the remaining distance to the ground.
* This article was originally published here
Sunday, 26 May 2019
United Airlines extends cancellation of Boeing Max flights
United Airlines is canceling another month's worth of flights with Boeing 737 Max planes that were grounded after two deadly accidents.
* This article was originally published here
* This article was originally published here
Huawei could be stripped of Google services after US ban
Huawei could lose its grip on the No. 2 ranking in worldwide cellphone sales after Google announced it would comply with U.S. government restrictions meant to punish the Chinese tech powerhouse.
* This article was originally published here
* This article was originally published here
Nobel-winning physicist Murray Gell-Man dies at 89
Murray Gell-Mann, the Nobel Prize-winning physicist who brought order to the universe by helping discover and classify subatomic particles, has died at the age of 89.
* This article was originally published here
* This article was originally published here
PixelGreen: A hybrid, green media wall for existing high-rise buildings
Researchers at Deakin University and the University of Hong Kong have recently designed a hybrid green architectural wall system for high-rise buildings that integrates a vertical micro-farm and a media screen. They presented this wall, called PixelGreen, in a paper published on Research Gate. PIXEL GREEN is designed for integration into the wall surfaces of existing buildings, turning them into analogue media screens.
* This article was originally published here
* This article was originally published here
Researchers discover how three-dimensional organization of the genome regulates cell differentiation
A new study from the University of Minnesota Medical School clarifies how the three-dimensional organization of the genome is regulated at the onset of skeletal muscle formation. Although the DNA sequence of the genome is a linear code, like a long sentence, the actual DNA molecule twists and folds in 3-D space, with some sequences that are distant from each other in sequence being physically close to each other in space. These 3-D interactions are thought to allow proteins that bind DNA to regulate the activity of genes that are distant from where they are binding.
* This article was originally published here
* This article was originally published here
Would overturning abortion rights turn back clock to 1973?
A wave of state abortion bans has set off speculation: What would happen if Roe v. Wade, the ruling establishing abortion rights nationwide, were overturned?
* This article was originally published here
* This article was originally published here
Support needed for multiple-birth families to improve outcomes
Having multiple-birth babies can be a time of wonder and excitement, however, according to the first-ever international collaborative report released today, these babies and their families can face serious disadvantages compared to parents of single-birth babies.
* This article was originally published here
* This article was originally published here
'Don't be too optimistic': Huawei employees fret at US ban
While Huawei's founder brushes aside a US ban against his company, the telecom giant's employees have been less sanguine, confessing fears for their future in online chat rooms.
* This article was originally published here
* This article was originally published here
A quicker eye for robotics to help in our cluttered, human environments
In a step toward home-helper robots that can quickly navigate unpredictable and disordered spaces, University of Michigan researchers have developed an algorithm that lets machines perceive their environments orders of magnitude faster than similar previous approaches.
* This article was originally published here
* This article was originally published here
FDA approves $2M medicine, most expensive ever
U.S. regulators have approved the most expensive medicine ever, for a rare disorder that destroys a baby's muscle control and kills nearly all of those with the most common type of the disease within a couple of years.
* This article was originally published here
* This article was originally published here
Threat or promise? E-auto boom could cost industry jobs
Over 115 years the auto industry in the east German town of Zwickau has lived through wrenching upheavals including World War II and the collapse of communism. Now the city's 90,000 people are plunging headlong into another era of change: top employer Volkswagen's total shift into electric cars at the local plant.
* This article was originally published here
* This article was originally published here
Mobile phone app designed to boost physical activity in women shows promise in trial
Activity trackers and mobile phone apps are all the rage, but do they really help users increase and maintain physical activity? A new study has found that one mobile phone app designed for inactive women did help when combined with an activity tracker and personal counseling.
* This article was originally published here
* This article was originally published here
Electrified methane reformer produces far less carbon dioxide
A team of researchers from several institutions in Denmark, along with colleagues from Sintex and Haldor Topsoe, has developed an electrified methane reformer that produces far less CO2 than conventional steam-methane reformers. In their paper published in the journal Science, the group describes their new technology and how well it works. Kevin Van Geem, Vladimir Galvita and Guy Marin with the Laboratory for Chemical Technology and Center for Sustainable Chemistry in Ghent have published a Perspective piece on the work done by the team in the same journal issue.
* This article was originally published here
* This article was originally published here
NASA's first-of-kind tests look to manage drones in cities
NASA has launched the final stage of a four-year effort to develop a national traffic management system for drones, testing them in cities for the first time beyond the operator's line of sight as businesses look in the future to unleash the unmanned devices in droves above busy streets and buildings.
* This article was originally published here
* This article was originally published here
Don't overdo omega-6 fat consumption during pregnancy
In Western societies, we are eating more omega 6 fats, particularly linoleic acid, which are present in foods such as potato chips and vegetable oil. Other research has shown that linoleic acid can promote inflammation and may be associated with an increased risk of heart disease.
* This article was originally published here
* This article was originally published here
Tapping the power of AI and high-performance computing to extend evolution to superconductors
Owners of thoroughbred stallions carefully breed prizewinning horses over generations to eke out fractions of a second in million-dollar races. Materials scientists have taken a page from that playbook, turning to the power of evolution and artificial selection to develop superconductors that can transmit electric current as efficiently as possible.
* This article was originally published here
* This article was originally published here
Engineered bacteria could be missing link in energy storage
One of the big issues with sustainable energy systems is how to store electricity that's generated from wind, solar and waves. At present, no existing technology provides large-scale storage and energy retrieval for sustainable energy at a low financial and environmental cost.
* This article was originally published here
* This article was originally published here
New approaches to study the genetics of autism spectrum disorder may lead to new therapies
Canadian neuroscientists are using novel experimental approaches to understand autism spectrum disorder, from studying multiple variation in a single gene to the investigation of networks of interacting genes to find new treatments for the disorder.
* This article was originally published here
* This article was originally published here
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