Abstract: Disclosed herein are systems and methods for controlling illumination in a greenhouse, comprising obtaining a geometric model of a greenhouse comprising a grow space segmented to a plurality of grow sections each associated with a respective one of a plurality of dimmable lamps having an illumination area overlapping the respective grow section, computing a shade model for the greenhouse based on the geometric model, the shade model defines, for each of the plurality of grow sections, a respective shading pattern indicative of a level of direct sun light in the respective grow section, enhancing the shade model using one or more machine learning models trained to predict the level of direct sun light in each grow section, and operating one or more of the plurality of dimmable lamps based on the enhanced shade model to illuminate its associated grow section according to one or more illumination rules.

Abstract: A personal protective shield, which comprises a central panel; at least two lateral panels; and hinged connections between the central panel and the lateral panels. The protective shield has a folded configuration for carrying it and for attaching to it other equipment, in which the afore the lateral panels are folded against the the central panel, and an expanded configuration for carrying out its protective function, in which the afore the lateral panels are angularly set off from the central panel. The central panel and the lateral panels are made of bulletproof plate materials. The central panel may have a curved configuration adapted to fit the back of the user, and the lateral panels may have curved configurations matching that of the central panel.