Extended ground level structures like roads or field edges can be important cues for navigating animals, seen example in road-following pigeons. In a landscape devoid of skyline but with rectangular grid pathways and roads, we used harmonic radar to track free-flying bumble bees, Bombus terrestris. Individual bees consistently linear features navigation wide range behavioural contexts. Bee expl...

Recently, inverters with a common ac and dc ground are gaining significant interest due to their zero common-mode voltage that made them particularly attractive for the solar photovoltaic application. However, source current of existing topologies is discontinuous, gains limited. This article proposes novel common-ground-type boost inverter achieves continuous significantly enhanced dynamic gai...

In the Brazilian semi-arid, sustainable growth rates and higher standards of living in society may be attained by use irrigation aiming at obtaining best economical function without disregarding several factors, such as labor, soil, water supply. The objective this work is presenting an alternative design procedure for low-head bubble systems so to make technology more accessible users. An elec...