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Mar 22, 2018

The limits of earthquake early warning: Timeliness of ground motion estimates

Posted by in categories: physics, robotics/AI, transportation

The basic physics of earthquakes is such that strong ground motion cannot be expected from an earthquake unless the earthquake itself is very close or has grown to be very large. We use simple seismological relationships to calculate the minimum time that must elapse before such ground motion can be expected at a distance from the earthquake, assuming that the earthquake magnitude is not predictable. Earthquake early warning (EEW) systems are in operation or development for many regions around the world, with the goal of providing enough warning of incoming ground shaking to allow people and automated systems to take protective actions to mitigate losses. However, the question of how much warning time is physically possible for specified levels of ground motion has not been addressed. We consider a zero-latency EEW system to determine possible warning times a user could receive in an ideal case. In this case, the only limitation on warning time is the time required for the earthquake to evolve and the time for strong ground motion to arrive at a user’s location. We find that users who wish to be alerted at lower ground motion thresholds will receive more robust warnings with longer average warning times than users who receive warnings for higher ground motion thresholds. EEW systems have the greatest potential benefit for users willing to take action at relatively low ground motion thresholds, whereas users who set relatively high thresholds for taking action are less likely to receive timely and actionable information.

Earthquake early warning (EEW) systems rapidly detect and characterize ongoing earthquakes in real time to provide advance warnings of impending ground motion. They use the information contained in the early parts of the typically low-amplitude ground motion waveforms to estimate the ensuing and potentially large-amplitude ground motion. Because EEW alert information can be transmitted faster than seismic wave propagation speed, such ground motion warnings may arrive at a target site before the strong shaking itself, thereby providing invaluable time for both people and automated systems to take actions to mitigate earthquake-related injury and losses. These actions might range from simple procedures like warning people to get themselves to a safe location to complex automated procedures like halting airport takeoffs and landings.

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Mar 22, 2018

New algorithm will allow for simulating neural connections of entire brain on future exascale supercomputers

Posted by in categories: information science, mathematics, neuroscience, supercomputing


(credit: iStock)

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Mar 22, 2018

Biological Cells Fused with Artificial Cells

Posted by in categories: bioengineering, biological

For the first time in history, researchers have fused artificial cells with biological cells in a way that lets them work together. This opens the door for a variety of new possibilities and applications.

Fusing biological and artificial cells

The research team at Imperial College London uses a system that encapsulates biological cells within an artificial cell. Using this approach, the team can harness the ability of biological cells to produce chemicals while offering them protection from the environment.

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Mar 22, 2018

Transhumanism VS Christianity (Full Exclusive Interview)

Posted by in categories: cosmology, transhumanism

Just Out: I did an hour long interview with Josh Peck of Into the Multiverse on Skywatch TV. Josh is a Christian #libertarian and this interview covers a variety of subjects including the compatibility of #Christianity & #Transhumanism, as well as my CA Governor run: PLEASE SUBSCRIBE AND SHARE! Here is the full exclusive interview of Zoltan Istvan by Josh Peck on the topic of transhumanism vs Christianity.

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Mar 22, 2018

New theory to explain why planets in our solar system have different compositions

Posted by in categories: education, space

A team of researchers with the University of Copenhagen and the Museum für Naturkunde, Leibniz-Institut für Evolutions has come up with a new explanation regarding the difference in composition of the planets in our solar system. In their paper published in the journal Nature, they describe their study of the calcium-isotope composition of certain meteorites, Earth itself, and Mars, and use what they learned to explain how the planets could be so different. Alessandro Morbidelli with Observatoire de la Côte d’Azur in France offers a News & Views piece on the work done by the team in the same journal issue.

As Morbidelli notes, most planetary scientists agree that the in our solar system had similar origins as small rocks orbiting the sun, comprising the , which collided and fused, creating increasingly larger rocks that eventually became protoplanets. But from that point on, it is not clear why the planets turned out so differently. In this new effort, the researchers have come up with a new theory to explain how that happened.

The protoplanets all grew at the same rate, the group suggests, but stopped growing at different times. Those that were smaller, they continue, stopped growing sooner than those that were larger. During this time, they further suggest, material was constantly being added to the disk. Early on it, it appears that the composition of the material was different from the material that came later, which explains why the we see today have such differences in composition.

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Mar 22, 2018

Machine Learning Wiki

Posted by in category: robotics/AI

Get past the jargon and buzzwords surrounding neural networks and learn what they have to do with machine learning and data science.

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Mar 22, 2018

ESA proves new technologies to power future launchers

Posted by in categories: futurism, materials

A full-scale demonstrator of the thrust chamber for an upper-stage rocket engine incorporating the newest propulsion technologies is being prepared for its first hot firing.

The Expander-cycle Technology Integrated Demonstrator, or ETID, has arrived at the DLR German Aerospace Center test facility in Lampoldshausen for tests. It will help to prove new technologies, materials and manufacturing techniques that offer higher performance at lower cost for Europe’s future launchers.

ETID is a precursor of the next generation of 10-tonne rocket engines. Some of the technologies could also be used on upgrades to the existing Vinci, which powers the upper stage of Ariane 6.

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Mar 22, 2018

US, Russia send astronauts to International Space Station for months-long stay

Posted by in category: space travel

The U.S. and Russia each sent astronauts to the International Space Station with a Wednesday, March 21 launch from the Baikonur Cosmodrome in Kazakhstan.

NASA sent two astronauts to the space station while Russian space agency Roscosmos sent one. The three crew members were launched aboard the Soyuz spacecraft, and are expected to dock with the space station’s module sometime Friday afternoon. NASA will have a stream of this docking starting 3 p.m. Friday on NASA TV and its website.

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Mar 22, 2018

Scientists discover the origins of gold in space

Posted by in category: space

A collision in an obscure galaxy, recorded last year, has revealed its violent birth.

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Mar 22, 2018

Treating Heart Failure

Posted by in category: biotech/medical

Researchers at the University of Alabama at Birmingham have discovered a potential target for therapies that may prevent or delay heart failure from pressure overload of the heart. It could also be a biomarker to warn physicians that a patient is at risk of this happening.

Early macrophage infiltration is a step in heart failure

In a new study, Dr. Sumanth Prabhu and his team showed that preventing the early infiltration of CCR2+ macrophages into the heart, in a mouse model of heart failure, significantly reduced enlargement of the heart and the decline of the pumping ability that leads to heart failure [1]. This means that the infiltration of macrophages is a critical step in heart failure.

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