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Why millions of lasers on a chip could be the future of lidar | Ars Technica
Ouster's single-chip vertical-cavity surface-emitting laser (VCSEL) technology vs. Velodyne's spinning lidar array.
lidar  technology  hardware  sdv  imaging  lasers  arstechnica  cars 
4 days ago by geephroh
Chinese spies orchestrated massive hack that stole aviation secrets
Feds say campaign hacked 13 firms in bid to help Chinese state-owned aerospace company.
arstechnica  cyber  security  china 
12 days ago by mattgrayson
Countrywide corruption breeds individual dishonesty, economists suggest | Ars Technica
Story ABOUT https://www.nature.com/articles/nature17160,
Intrinsic honesty and the prevalence of rule violations across societies
simon Gächter & Jonathan F. Schulz
Nature, volume 531, pages 496–499 (24 March 2016)

"Two economists at the University of Nottingham, Simon Gächter and Jonathan Schulz, have published an intriguing suggestion about the roots of dishonesty: they suggest that a corrupt social environment, rife with political corruption and tax evasion, can trickle down to the individual level and make people in such a country more likely to be dishonest in some contexts. Based on data gathering and behavioral experiments done in 23 countries, they found that people in more corrupt countries were more likely to cheat during an experiment."

"The question was why—do national tendencies push the population toward more or less honesty, or do individuals drive the national tendency?"

"Overall, there was a correlation between a country’s PRV level and the amount of money its citizens claimed, with people from low-honesty countries claiming more money. Other results backed up the finding, like more reports of rolling a six (probably honest, because this resulted in no payment) in high-honesty countries."

"Whatever direction the effect runs in, the correlations are robust. There's a link between dishonesty at the individual and national levels"
ArsTechnica  economics  dishonesty  lying  culture 
13 days ago by pierredv
After century of removing appendixes, docs find antibiotics can be enough | Ars Technica
“Despite upending a long-held standard of care, the study’s finding is not entirely surprising; it follows several other randomized trials over the years that had carved out evidence that antibiotics alone can treat an acute appendicitis. Those studies, however, left some dangling questions, including if the antibiotics just improved the situation temporarily and if initial drug treatments left patients worse off later if they did need surgery.

“The new JAMA study, with its full, five-year follow-up, effectively cauterised those remaining issues. Nearly two-thirds of the patients randomly assigned in the study to get antibiotics for an uncomplicated appendicitis didn’t end up needing surgery in the follow-up time, the Finnish authors, based at the University of Turku, report. And those drug-treated patients that did end up getting an appendectomy later were not worse off for the delay in surgery.”
science  appendicitis  appendix  arstechnica  2018 
6 weeks ago by handcoding
Inside the eight desperate weeks that saved SpaceX from ruin | Ars Technica
The company's meteoric rise can be traced to a critical launch from a Pacific isle.
spacex  arstechnica 
7 weeks ago by jorgebarba

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