A multiple instance spanning tree protocol creates a plurality of active topologies within a computer network. According to the invention, the proportion of silicon dioxide particles is from 10 to 80% by weight and the proportion of plasticizer is from 90 to 20% by weight, where the sum of the proportions of silicon dioxide particles and of the plasticizer is at least 80% by weight. The end sections of the flanges in the tube-length direction of the conductive base contact the inner surface of the conductive base within an electrically-charged region of the photosensitive layer. The hatch assembly includes a support frame that is coupled proximate to a bottom of the cargo well. A control terminal is coupled to the control terminal of the power device through a second resistive element.