A rod-shaped implant for spinal stabilization includes a first component comprising a first material, and a second component comprising a second material, wherein at least the first material is a plastic material, and wherein the first and the second component are connected by melting at least the first component to connect to the second component. The semiconductor layer includes a diffusion region and a channel region. At a receiver, a control system transforms zero-mean of source and destination vertex arrays using, respectively, the source and destination projection matrixes. The ballast control also can download lighting profiles to a microcontroller in the ballast, and can support lighting control protocols including the DALI standard. The stand is positioned above the conduit, the communication cable is attached to the winch, and the winch is used to pull the communication cable through the conduit.