Abstract: A tracking unit for solar collectors has at least two panels, which can each be pivoted about a longitudinal axis. The axes are arranged on a rotable frame on one plane. The position of each axis within the individual panels is offset by a offset ?x in relation to the adjacent panels. The individual panels are moved by means of a lifting mechanism that pivots each of the panels about the same angle. This arrangement significantly reduces mutual shading and increases efficiency by about 10%.

Abstract: The present invention resides in a method of transmitting data packets between a first node coupled to be in communication with a first network and a second node coupled to be in communication with a second network, the first network and the second network coupled to be in communication with a plurality of network interfaces. The method includes measuring a forward data flow rate and a reverse data flow rate between the first node and the second node, determining an aggregate data flow rate based on the forward flow rate and the reverse flow rate, and assigning data flow to one or more of the network interfaces based on an available bandwidth of each network interface and the aggregate data flow rate.