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DateDate: 4-07-2019, 06:23

American engineers taught the robot to carefully wear a sleeve of clothing on a person. The algorithm they created allows them to control the force with which the sleeve presses on the arm, and to adjust the movements of the robot to ensure maximum comfort for the person, reports the website of the Cornell University Library.
Such developments can be useful for people with disabilities. Thus, robots have already been created that are capable of bringing household objects to the sick — the development was presented by Toyota, reports.
A new algorithm was created by a group of engineers from the Georgia Institute of Technology under the direction of Charles Kemp. It consists of several components. The location and magnitude of the forces applied by clothing to a person’s hand is determined based on the readings of the sensors. Another component predicts the strength with which clothing will affect the hand in the process of dressing. Also, artificial intelligence plans actions for 0.2 seconds ahead, choosing the most comfortable for a person. Parts of the algorithm are based on long short-term memory (LSTM).
Algorithm training was carried out using simulation, trial and error. Training in a virtual environment helped identify actions that could harm people.
After this robot, Willow Garage PR2, equipped with a manipulator, was tested on ten volunteers. When planning actions in 0.2 seconds, the robot successfully coped with the task in more than 97.5% of cases.

DateDate: 3-07-2019, 07:45

Environmental problems and unstable oil prices are forcing scientists to experiment with various sources of renewable energy.
24GADGET 07/02/2019 22:18:15
In Switzerland, began to extract kerosene from the air
Engineers of the Swiss Higher Technical School of Zurich have proposed an unusual method of extracting hydrocarbon fuels from the air using solar energy.
They created an installation that extracts water and carbon dioxide from the air, which then decomposes using solar energy, according to 24gadget.
As a result, an artificial gas consisting of hydrogen and carbon monoxide is obtained at the outlet. The resulting mixture is then used to produce hydrocarbon fuels, including aviation kerosene.
The experimental facility is already operating in Switzerland, and even in the mid-European climate it can produce up to 100 ml of kerosene per day.
The chemical process uses high temperature, which is achieved by solar energy. Such conditions allow to achieve high speed and efficiency of the reaction. As a result, the experimental facility produces about 100 ml of fuel.
The next stage of the project will be the creation of a large solar-powered power plant, the construction of which has already begun near Madrid.
The main goal of the developers is to create a cost-effective hydrocarbon fuel generator capable of producing kerosene on an industrial scale.
According to experts, the use of technology at a solar station of 1 square km will allow producing up to 20 thousand liters of kerosene per day.
Placing a solar generator on an area of about one-third of the area of the Mojave Desert, which is just over 11 thousand square km, you can completely abandon oil production for aviation needs.
Reducing the cost of solar and wind energy to a level 2-3 times lower than the price of hydrocarbon energy, now opens the way for the development of production of hydrogen fuel.

DateDate: 2-07-2019, 07:13

Scientists have created a device that sends signals to the owner when changing the emotional heat.
A group of engineers at the School of Computing and Communications at the University of Lancaster has developed a bracelet that helps the wearer to monitor the emotional state. This was reported by EurikAlert.
According to experts, the technique will help people suffering from affective disorders - depression and bipolar disorder, as well as sudden "inappropriate emotions" - fear, anxiety, rage, anger.
The gadget monitors skin temperature. It is known that it does not require any synchronization with other devices.
“Previous work on a similar technology has focused on graphs and abstract visualization of biosignals on mobile and web interfaces. However, we focused on devices that are worn on the hand and work not only through visual signals, but can also be felt through vibration, the sensation of "tightening" and heat. It does not need access to other programs. Our prototypes provide real-time data, ”quotes the publication of Mohammed Umayr involved in the development.
Volunteers are required to wear bracelets from eight to sixteen hours. At the same time, they led everyday life, communicating with other people, worked, rested and experienced stressful situations.
According to Umayra, testing participants began to pay more attention to their emotional state. They have the opportunity to analyze mood changes.
Now engineers are planning a series of additional tests and upgrading their development.

DateDate: 1-07-2019, 07:08

Workers are completing the construction of a pedestrian bridge that will connect the Cornwall peninsula with the island fortress Tintagel in England.
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The bridge with a length of 70 meters will consist of two consoles that stretch towards each other: one from the island with the castle ruins, the other from the opposite shore, where the village of Tintagel stands, reports Stroy Obzor.
The highlight of the bridge will be that the consoles do not touch, and a gap of 4 cm between them will remain.
According to the authors of the project, such a gap should create a feeling of transition between the mainland and a small island.
The bridge will be lined with stone blocks, along its entire length they will install stainless steel balustrades, which are designed so that at a distance they merge with the sky.
A source

DateDate: 30-06-2019, 06:40
New software, which was developed by American scientists at Washington University, will allow at home, using a smartphone, to determine whether a person has otitis. Failure to diagnose otitis media can lead to serious complications, including the complete loss of hearing.
The EarHealth app turns an iPhone, iPod touch or Android into an otoscope. The system uses a phone speaker and microphone to send and receive audio to the ear canal through a paper cone. The principle of operation of this invention, scientists have compared with the system of echolocation of a bat.
The device sends a series of soft audio signals with a frequency of 1 to 4 kHz in your ear. The sound resembles the chirping of birds and does not cause unpleasant sensations in humans.
The signal is reflected from the eardrum and is picked up by the microphone of the mobile device. If there is fluid in the middle ear, the frequency of the sound in the reflected wave changes.
The eardrum of a healthy person resonates well at several sound frequencies. The sound reflected from a healthy ear will create a soft echo that resembles an acoustic and wide dip.
The fluid in the ear limits the vibratory capacity of the eardrum, which in turn creates a narrower and deeper acoustic dip.
“It's like tapping on a glass of wine,” says study co-author, Dr. Justin Chen. “Depending on how much fluid is in it, you get different sounds.”
The method was tested on a group of children aged 1.5 years to 17 years at the Seattle Children's Hospital.
Dr. Randall Bligh claims that it will be easier and cheaper to monitor at home.
“Even in developing countries, smartphones are becoming commonplace. If an application can give doctors precision at the specialist level, this can really change the tactics of treating inflammatory diseases of the ear at the global level,” Dr. Chen said.