Intel fixes CPU security flaw it said was patched in May
It turns out that Intel's CPU security fixes from May didn't address everything the company mentioned. Intel is rolling out another patch that does more to close the speculative execution flaws that could let attackers swipe passwords and other sensitive info. The mitigations in the patch should "substantively reduce" the possibility of an attack, Intel said. This still doesn't fully resolve the problem, but Intel is promising future CPU-level microcode fixes. There's a larger concern over how Intel has handled these vulnerabilities in the first place, however.
On a hillside above Stanford University, the SLAC National Accelerator Laboratory operates a Accelerator - on - a - chip technology could also lead to new cancer radiation therapies, said physicist This demands a new approach to engineering based on silicon integrated photonics and lithography.
But particle accelerators are expensive, require scientists to travel from locations all over the world and cannot accommodate all the researchers who submit To make these devices more accessible, a team at Stanford University developed a laser-driven particle accelerator that fits on a tiny silicon
In scientific pursuits, like the search for dark matter, researchers sometimes use. But these are extremely expensive and only a handful of them exist, so teams must travel to places like the National Accelerator Laboratory in Menlo Park, California, where Stanford University operates at two-mile-long particle accelerator. This may change, though. Researchers believe they have developed an alternative: a laser-driven particle accelerator that fits on a silicon chip.
Traditional particle accelerators use microwave radiation to boost the speed of electrons, but microwaves measure four inches from peak to trough, so they require more distance to nudge electrons along. The prototype particle accelerator created byuses infrared light, which has a wavelength one-tenth the width of a human hair, so it can accelerator electrons in much shorter distances.
Stanford publishes its massive Apple Watch heart-rate study
The Stanford researchers that conducted Apple's Heart Study have published their paper in the New England Journal of Medicine. They previously released the study's preliminary results, but you can now read the full paper if you're curious about how they were able to come to the conclusion that, yes, the Apple Watch can detect atrial fibrillation. People who have the condition have irregular heartbeat and could suffer from stroke, blood clots and heart failure.The study, which was sponsored by Apple and started back in 2017, garnered enough interest to enlist 400,000 volunteers with access to an iPhone and a Watch Series 1, 2 or 3.
Physicists Go Small: Let's Put A Particle Accelerator On A Chip . An early prototype of the silicon - chip -sized particle accelerator that physicists at Stanford are working on. An accelerator built this way would bring an accelerator 's usefulness within the reach of more researchers .
Researchers have created a tiny prototype particle accelerator , small enough to fit onto a silicon chip . Although it accelerates particles to a far lower velocity than a full-size particle accelerator , it can still produce energized particles that could be used for research applications in chemistry and biology.
But because the wavelengths are so much shorter, the researchers had to make the rest of the accelerator 100,000 times smaller. To do so, they used inverse design algorithms to reverse engineer a silicon chip that could meet those needs. Then, in the silicon, they etched a nanoscale channel and strategic structures, to guide the electrons and bursts of infrared light. The light pulses 100,000 times every second, and as it does, it hits the electrons, accelerating them forward.
For research or medical uses, accelerators need to boost electrons to 94 percent of the speed of light, or one million electron volts (1MeV). This silicon chip prototype isn't there yet. You would need 1,000 of these to reach those speeds. But researchers think they can make a one-inch chip that accelerators electrons to 1MeV, and they plan to do so by the end of 2020.
Amazon designs faster ARM-based chips for its cloud servers
Amazon's cloud hosting business, Amazon Web Services, will soon be getting new server hardware -- an updated processor specifically designed for data centers, as reported by Reuters. Last year, Amazon announced the launch of its ARM-based processor called Graviton which was optimized for performance and cost. According to a source who spoke to Reuters, the new processors are at least 20 percent faster than this first-generation ARM chip. TheLast year, Amazon announced the launch of its ARM-based processor called Graviton which was optimized for performance and cost. According to a source who spoke to Reuters, the new processors are at least 20 percent faster than this first-generation ARM chip.
Stanford University. Summary: For the first time, scientists have created a silicon chip that can accelerate electrons -- albeit at a The accelerator - on - a - chip demonstrated in Science is just a prototype, but Vuckovic said its design and fabrication techniques can be scaled up to deliver particle
Using an inverted design model, Stanford researchers have flipped the script on mammoth particle accelerators , creating a nano accelerator - on - a - chip . The team used white infrared light, which passes through silicon , to hit and push the particles up to speed as it moves though the nanoscale
Stanford and SLAC compare it to the work engineers once did to compress the power from room-sized mainframes into desktop PCs. They believe it could be used for medical and other scientific researcher. For instance, today, highly energized electrons aren't used for cancer radiation therapy because they are hard to guide and would burn the skin. One of the Stanford researchers, Olav Solgaard, is already working on an application of this chip that would guide the energized electrons through a catheter-like vacuum tube inserted alongside a tumor.
"We can derive medical benefits from the miniaturization of accelerator technology in addition to the research applications," Solgaard said in a press release.,
The RATP pollution measures in the metro and the RER criticized by an association
The air measurements carried out by the RATP showed that the air in the metro and RER was more polluted than that of the outside. But this Wednesday, the national association for the prevention and improvement of air quality, Respire, publishes a new study showing that the instruments used to obtain said measurements are "insufficient" to be able to measure it correctly, reports.
This study, carried out in June by the team of Jean-Baptiste Renard, researcher at the CNRS and specialist in, showed a "great variability of measurements" of pollution depending on where we are find. To establish its results, the RATP is based on three fixed measurement stations. "In RER A, the arrival of certain trains is preceded by a strong cloud of particles, probably linked to braking. This shows that it is not a sufficient indicator to put a fixed device in the middle of the station" , tance Jean-Baptiste Renard.
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As for the results of the study, they are final. At the Lyon RER A station, PM10 concentrations (below 10 micrometers) have reached a threshold up to ten times higher than that measured on the surface, says"Poorly detected particles" . For 30 µg / m3 measured outside, the researchers obtained a rate of 300 micrograms per cubic meter (µg / m3) inside.
In addition, the researchers noted the significant presence of fine PM1 particles (less than or equal to one micrometer). According to the study, they represent 99.5% of the particles measured. And "these particles are poorly detected at the moment. They are lighter, so we can miss out if we use devices that measure mass," laments Jean-Baptiste Renard.
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In support of these new elements, the president of the association Olivier Blond calls on the RATP to set up "a real program of measures "," a little more serious than what is happening now, "he explains to Franceinfo.
For its part, the transport authority highlights the generalization of electric braking in 2030 to limit particles, and the 56 million euros invested between 2016 and 2020 to improve ventilation.
EUV will use plasma and lasers to make next-gen chips .
Microchips are so ubiquitous, it's easy to lose sight of how remarkable they actually are. Something as mundane as a thermostat or singing greeting card contains millions of microscopic structures created in one of the most remarkable manufacturing processes ever developed. The current process has been evolving since around 1977, and works sort of like a projector. Lasers shine light through a mask, which is like the blueprint for the chip, and projects the mask onto light-sensitive chemicals painted onto a slab of silicon.