A nutritious, flavorful, digestible animal chew made from a dehydrated sweet potato is provided. The canopy has an opening and a door that can be closed to block the opening and opened to unblock the opening. Low toleration for staleness would mean that eviction is certain, no matter the cost, and high toleration would mean that the TTL value would be set based on total cost. Furthermore, p sets of secondary windings are provided, each set of secondary windings being formed by in each casempthree-phase secondary windings of each transformer, and each set of secondary windings with the associated secondary windings being connected to the rectifier unit of a respective converter circuit element. In other embodiments, the methods further comprise partially hydrogenating the polyunsaturated esters in the presence of a hydrogenation catalyst, wherein at least a portion of the polyunsaturated esters are converted to monounsaturated esters. An antenna verification unit of the wireless receiving apparatus verifies a weight vector added to at least one of a signal sent from the first antenna and a signal from the second antenna by the wireless transmitting apparatus based on feedback information from the wireless receiving apparatus.