Top Technology News -- ScienceDaily
Wearable device measures cortisol in sweatBy drawing in a bit of sweat, a patch can reveal how much cortisol a person is producing. Cortisol is known as the stress hormone but is involved in many important physiological functions.
Parakeet pecking orders, basketball match-ups, and the tenure-trackResearchers describe a new algorithm called SpringRank that uses wins and losses to quickly find rankings lurking in large networks. When tested on a wide range of synthetic and real-world datasets, ranging from teams in an NCAA college basketball tournament to the social behavior of animals, SpringRank outperformed other ranking algorithms in predicting outcomes and in efficiency.
Eagle-eyed machine learning algorithm outdoes human expertsResearchers have trained computers to quickly and consistently detect and analyze microscopic radiation damage to materials under consideration for nuclear reactors. And the computers bested humans in this arduous task.
How to weigh stars with gravitational lensingAstronomers have published the predictions of the passages of foreground stars in front of background stars. A team of astronomers, using ultra-precise measurements from the Gaia satellite, have accurately forecast two passages in the next months. Each event will produce shifts in the background star's position due to the deflection of light by gravity, and will allow the measurement of the mass of the foreground star, which is extremely difficult to determine by other means.
Speed up solving complex problems: Be lazy and only work crucial tasksA new improvement to a programming technique called 'lazy grounding' could solve hard-set and complex issues in freight logistics, routing and power grids by drastically reducing computation times.
World's fastest human-made spinning object could help study quantum mechanicsResearchers have created the fastest human-made spinning object in the world, which they believe will help them study material science, quantum mechanics and the properties of vacuum.
New material: Two faces offer limitless possibilitiesNamed for the mythical god with two faces, Janus membranes -- double-sided membranes that serve as gatekeepers between two substances -- have emerged as a material with potential industrial uses.
New study shows certain video games can improve health in children with obesityA new study showed for the first time that video games, in combination with fitness coaching and a step tracker, helped overweight children lose weight, lower their blood pressure and cholesterol and increase their physical activity.
Protecting autonomous grids from potentially crippling GPS spoofing attacksNot long ago, getting a virus was about the worst thing computer users could expect in terms of system vulnerability. But in our current age of hyper-connectedness and the emerging Internet of Things, that's no longer the case. With connectivity, a new principle has emerged, one of universal concern to those who work in the area of systems control. That law says, essentially, that the more complex and connected a system is, the more susceptible it is to disruptive cyber-attacks.
New solar sailing technology for NASAResearchers is taking solar sailing to the next level with advanced photonic materials. This new class of materials could be used to steer reflected or transmitted photons and enable near-Earth, interplanetary and interstellar space travel.