Readers discuss sustainable fuels, the magic of the placebo effect and the deaths of DFT and expensive calculators ...

Abstract: This paper presents a unified logic for flagged prefix addition-subtraction that eliminates the need to perform constant addition and subtraction in two separate blocks. The logic is based ...

Doctors and device makers are habituated to the notion that more devices equal better outcomes, but one presenter at this year’s Transcatheter Cardiovascular Therapeutics meeting in San Francisco ...

SARS-CoV-2 is an emergent virus. Specifically how it will adapt to human hosts and populations with growing immunity is unknown. Coronaviruses acquire substitutions more slowly than other RNA viruses ...

Take this quiz to see how much you know about this topic already, then work through the guide and see if you can beat your score. Take a look at this number line. It shows 14 - 5 = 9. You can count ...

Abstract: Most of the recently published background subtraction methods can still be classified as pixel-based, as most of their analysis is still only done using pixel-by-pixel comparisons. Few ...

The authors used a Bayesian modeling framework to fit behavior and serotonin neuron activity to reward history across multiple timescales. A key goal was to distinguish value coding from other ...

Learn how to use first, then and now stories to understand addition. First, then, now (subtraction) Learn how to use first, then and now stories to understand subtraction problems. Subtraction within ...

Western civilization has always had a fascination with the civilization which grew up along the Nile River around 3,000 BC. Greek intellectuals, such as Thales, visited Egypt and were enamored by the ...

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