Abstract: We describe a radiator unit for an antenna. The radiator unit is configured to radiate electromagnetic waves within a frequency band. The radiator unit comprises: a first radiating structure for radiating an electromagnetic wave having a first frequency within the frequency band, and a non-radiating structure coupled to the first radiating structure. One or both of (i) the first radiating structure comprises a first corrugation arranged on a first planar structure of the radiator unit, and (ii) the non-radiating structure comprises a second corrugation arranged on a second planar structure of the radiator unit.

Abstract: An evacuated core circuit board (10) for dissipating heat from a heat generating electronic component, the evacuated core circuit board comprising: at least one circuit layer (12) to which the heat generating electronic component (14) is electronically coupled; a base layer (16) a comprising a body structure (19) having a substantially hollow interior (20); and a dielectric layer (18) provided between at least a portion of the circuit layer (12) and the base layer (16), wherein the hollow interior (20) is at least partially evacuated.

Abstract: Discloses is a cycling training device arranged to control the rolling resistance experienced by the rider, such that the rolling resistance experienced by the rider is varied in accordance with a training programme. The cycling training device comprises an electronic control unit and a variable resistance unit, the variable resistance unit engaging with or mounted in a wheel of a bicycle such that the effective rolling resistance of the bicycle may be controlled.

Abstract: A method and system of an embodiment may include a method, comprising receiving, at a computing device, network bandwidth information for a network, receiving, at a computing device, a request for network bandwidth, identifying, at a computing device, one or more portions of network bandwidth to fulfill the request. The method may include provisioning the one or more identified portions of unallocated network bandwidth for the request. The identification may comprise utilizing the network bandwidth information to identify one or more portions of unallocated network bandwidth with sufficient capacity for the request, and determining which of the one or more portions of unallocated network bandwidth will result in less fragmentation of remaining unallocated network bandwidth.