Consistent with the present disclosure, a ferrule is provided that includes first and second channels, for example. The techniques may include storing data in a data store which may be a semantic data store. A number of pulses are applied to the solution and component. The resulting Virtual Attribute Based Access Control system allows a Policy Decision Point to make better informed decisions based on information that results from metrics, statistics, or data from some outside system. The ducts can be used to route wires between each player station and the central space and to direct cooling air to or from each player station. An engaging portion is formed at an end of the stem.