Android faces must express greater emotion if robots are to interact with humans more effectively. Researchers tackled this challenge as they upgraded their android child head, named Affetto. They precisely examined Affetto's facial surface points and the precise balancing of different forces necessary to achieve more human-like motion. Through mechanical measurements and mathematical modeling, they were able to use their findings to greatly enhance Affetto's range of emotional expression.
It takes energy to make weapons, but it may take even more energy to maintain them. Because leaf-footed bugs drop their legs, it is possible to measure how much energy they allocate to maintaining this appendage that males use to fight other males.
Facial massaging using a roller can increase skin blood flow for more than ten minutes after the massage. It can also improve vasodilation -- the widening of blood vessels, -- in the long-term, according to a new study.
A wide ranging international study that genetically analysed the DNA of a series of famous and controversial ancient remains across North and South America has discovered that the Spirit Cave remains -- the world's oldest natural mummy - was a Native American. They were also able to dismiss a longstanding theory that a group called Paleoamericans existed in North America before Native Americans.
Laser-based 'optical tweezers' could levitate uranium and plutonium particles, thus allowing the measurement of nuclear recoil during radioactive decay. This technique provides a new method for conducting the radioactive particle analysis essential to nuclear forensics
A new study has shown vultures use their very own social networks to take advantage of thermal updrafts which help them fly vast distances. Researchers examined how the vultures seemed to make risky but efficient choices when it came to their flight patterns by observing other birds in the network.
Computer scientists have developed a promising new approach for interpreting machine learning algorithms. Unlike previous efforts, which typically sought to 'break' the algorithms by removing key words from inputs to yield the wrong answer, the researchers instead reduced the inputs to the bare minimum required to yield the correct answer. On average, the researchers got the correct answer with an input of less than three words.
Researchers have developed modular robots that can perceive their surroundings, make decisions and autonomously assume different shapes in order to perform various tasks -- an accomplishment that brings the vision of adaptive, multipurpose robots a step closer to reality.
Edible dormice are extremely long-lived thanks to their seasonal dormancy with hibernation periods lasting between at six and eleven months. Researchers hypothesized that older animals should shorten their winter dormancy in favor of a reproductive advantage and confirmed this for both sexes in a database analysis.
When Chlamydia trachomatis, the bacterium that causes one of the most common sexually transmitted infections worldwide, enters a human cell, it hijacks parts of the host to build protective layers around itself. Inside this makeshift fortress, the bug grows and reproduces, eventually bursting out in search of a new target and killing the host cell. While scientists have known for years that Chlamydia protects itself in this way, they were missing the mechanics until now.
Singing may provide benefits beyond improving respiratory and swallow control in people with Parkinson's disease, according to new data. The results from the pilot study revealed improvements in mood and motor symptoms, as well as reduced physiological indicators of stress.
Scientists have developed a noninvasive way of delivering drugs to within a few millimeters of a desired point in the brain. The method, tested in rats, uses focused ultrasound to jiggle drug molecules loose from nanoparticle 'cages' that have been injected into the bloodstream.
A research group has successfully developed a methodology for enhancing thermoelectric power factor while decreasing thermal conductivity. By introducing ZnO nanowires into ZnO films, the thermoelectric power factor became 3 times larger than that of ZnO film without ZnO nanowires. The success of this research will lead to the realization of high-performance transparent thermoelectric devices which will enable energy recovery from transparent objects used all over the world.
Scientists have shown that a bird found in Pennsylvania is the offspring of a hybrid warbler mother and a warbler father from an entirely different genus -- a combination never recorded before now and which resulted in a three-species hybrid bird.