Reaction gases such as hydrogen, oxygen and propylene are reacted in a slurry of solid catalyst in solvent, the reaction being carried out in a series of separate zones with intermediate removal of the exothermic heat of reaction by indirect heat exchange. According to one embodiment, a method may include provisioning a computing resource according to a given level of resource utilization, and dynamically predicting utilization of the computing resource that is expected to occur during a given interval of time. One way is to sandwich the paper between a tapered holder which is folded to provide a nose for actuating the Schrader valve. The switch plug is provided with a plunger-style switch that enables the intelligent patch panel to determine when the switch plug is plugged into a switch port. In one embodiment, a control signal relates to an actuator movement is monitored and correlated to performance of the injection valve.