A process is provided that is effective for allowing bacteria to be cultured in a selected substrate. Such data center network architectures, systems, and methods employ physical optical ring network and multi-dimensional network topologies and optical nodes to efficiently allocate bandwidth within the data center networks, while reducing the physical interconnectivity requirements of the data center networks. The cutting configuration for the ticket printer includes a hand cutter mounted to at least one of the upper frame and the lower frame. A contact hole is selectively etched through the interlayer insulating film to the impurity layer.