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Is China's new J-31 stealth multi-role fighter an F-35 rip-off?

FOX News

Fox News Flash top headlines are here. Check out what's clicking on Foxnews.com. Chinese media reports are now referencing new photos of the emerging J-31 5th-Gen stealth fighter appearing on social media, ostensibly showing various design improvements to the new radar-evading multi-role aircraft. A May 5th report in the Global Times, an English-language Chinese newspaper, says the new photos show an … "upgraded version with modifications made to its aerodynamic design just like the prototype that made its maiden flight in 2016, instead of the original version that made its public debut at Airshow China in 2014." Improvements or changes to the J-31 likely continue a long-standing pattern of China's alleged effort to copy, steal or mirror designs used for the U.S. F-35. Virtually all photos and renderings of the J-31, since first unveiled, revealed a striking resemblance to the U.S. F-35.


Pentagon seeks new space tech to destroy hypersonic attacks

FOX News

Fox News Flash top headlines are here. Check out what's clicking on Foxnews.com. They unleash destruction traveling at five times the speed of sound. Their speed and force is so significant, they can inflict damage by sheer "kinetic" impact without needing explosives. They can destroy Navy ships, air defenses, ballistic missiles, ground targets and aircraft in a matter of minutes or even seconds, depending upon the launch point--seemingly coming out of nowhere.


[Report] New particle formation in the free troposphere: A question of chemistry and timing

Science

New particle formation (NPF) is the source of over half of the atmosphere's cloud condensation nuclei, thus influencing cloud properties and Earth's energy balance. Unlike in the planetary boundary layer, few observations of NPF in the free troposphere exist. We provide observational evidence that at high altitudes, NPF occurs mainly through condensation of highly oxygenated molecules (HOMs), in addition to taking place through sulfuric acid–ammonia nucleation. Neutral nucleation is more than 10 times faster than ion-induced nucleation, and growth rates are size-dependent. NPF is restricted to a time window of 1 to 2 days after contact of the air masses with the planetary boundary layer; this is related to the time needed for oxidation of organic compounds to form HOMs.


Annual Meeting focuses on boundary-breaking research

Science

Attendees of the 2019 Annual Meeting of the American Association for the Advancement of Science will celebrate three milestones that exemplify the 2019 meeting theme of science transcending boundaries. The 150th anniversary of the presentation of the periodic table of elements helped bridge the gap between chemistry, physics, and biology, while the 50th anniversary of Neil Armstrong's moonwalk and the first messages sent on the nascent internet erased the boundary between Earth and space and brought the world closer together than ever. The 2019 annual meeting, to be held 14 to 17 February in Washington, D.C., will highlight research that brings together people, ideas, and solutions across boundaries in plenary and topical lectures, scientific sessions, career workshops, and public events such as Family Science Days. Among the topics to be discussed are the challenges of climate change, artificial intelligence, drug discovery, criminal justice, and more. This is an article distributed under the terms of the Science Journals Default License.


Beginners Ask "How Many Hidden Layers/Neurons to Use in Artificial Neural Networks?"

#artificialintelligence

Bio: Ahmed Gad received his B.Sc. degree with excellent with honors in information technology from the Faculty of Computers and Information (FCI), Menoufia University, Egypt, in July 2015. For being ranked first in his faculty, he was recommended to work as a teaching assistant in one of the Egyptian institutes in 2015 and then in 2016 to work as a teaching assistant and a researcher in his faculty. His current research interests include deep learning, machine learning, artificial intelligence, digital signal processing, and computer vision.