In Bilyana Nikolova's grocery store in Chuprene, a village in northwestern Bulgaria, prices are now displayed in levs and ...

Harvard University is now making its most sought-after computer science courses accessible for free. Topics include AI, Python, cybersecurity, and web development. These courses come with no fees or ...

Abstract: Conventional approaches to sampling signals or images follow Shannon's theorem: the sampling rate must be at least twice the maximum frequency present in the signal (Nyquist rate). In the ...