Abstract: In a system for providing computer network connectivity to transit cars that each include first and second mobile radios, and a memory and a processor in each car performing the steps of (a) causing the first and second mobile radios of the car to enter into a far-field mode of operation in communication with a wayside radio; (b) following step (a), the processor of a first car causing its second mobile radio to enter into a couple mode of operation with a first mobile radio of a proximate car; and (c) following step (a), the processor of a second car causing its first mobile radio to enter into a couple mode of operation with a second mobile radio of a proximate car. In the couple mode of operation, first and second mobile radios in proximate cars communicate only with each other.

Abstract: In a system for providing computer network connectivity to transit cars that each include first and second mobile radios, and a memory and a processor in each car performing the steps of (a) causing the first and second mobile radios of the car to enter into a far-field mode of operation in communication with a wayside radio; (b) following step (a), the processor of a first car causing its second mobile radio to enter into a couple mode of operation with a first mobile radio of a proximate car; and (c) following step (a), the processor of a second car causing its first mobile radio to enter into a couple mode of operation with a second mobile radio of a proximate car. In the couple mode of operation, first and second mobile radios in proximate cars communicate only with each other.

Abstract: Apparatus and method for cooling an extruded blown film in which the interior surface of the thin film bubble is contacted with a gas which does not contain water vapor to thereby cool the extruded film. The apparatus and method may employ an enclosed circulation system to provide for the reuse of the gas through cooling with a liquid coolant such as liquid cryogen.