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A system for measuring optical proximity based on reflection of modulated light is presented. Its novel input stage topology comprising an ac coupled TIA and a two stage dc rejection circuit based on a synthesized inductance, provides readouts with a resolution better than 13.2 ENOB. This allows the sensor system to be flexibly used also for heart rate and(More)
Estimating population spread rates across multiple species is vital for projecting biodiversity responses to climate change. A major challenge is to parameterise spread models for many species. We introduce an approach that addresses this challenge, coupling a trait-based analysis with spatial population modelling to project spread rates for 15 000 virtual(More)
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