Abstract: A device configured to generate an air flow, the device including: a compressor; an air flow duct arranged to convey a flow of air generated by the compressor; a gas-filled cavity disposed beside the air flow duct; a wall separating the air flow duct and the cavity, the wall including at least one aperture; and an acoustic resistive screen covering and held in tension over the aperture of the wall. The screen is in fluid contact with air in the air flow duct and gas in the cavity and is configured to resist air flow between the duct and the cavity. The resistive screen and the cavity together define a noise-damping resonator.

Abstract: A method of reducing noise in a device configured to generate an air flow. The device includes an air flow duct arranged to convey a flow of air, a gas-filled cavity disposed beside the air flow duct, and a wall separating the air flow duct and the cavity. The wall includes at least one aperture. The method includes optimising an acoustic property for an acoustic resistive screen that is to be held in tension over the aperture, by: determining geometric properties of the cavity, the aperture and the air flow duct; determining, based on the geometric properties, a noise reduction for the device for each of a series of values for the acoustic property of the screen; and comparing the respective noise reductions for the series of values to determine an optimised value of the series.

Abstract: Embodiments generally relate to providing litigation management for multiple remote content systems using asynchronous bi-directional replication pipelines. In some embodiments, a method includes retrieving, at one or more inbound replicators of one or more respective bi-directional pipelines, metadata associated with documents stored in one or more content repositories. The method further includes resolving, at a governance control hub, conflicts associated with legal holds on one or more of the documents based on the metadata. The method further includes sending conflict resolution results from one or more outbound applicators of the bi-directional pipelines to the content repositories, where the content repositories enforce legal holds on the documents.

Abstract: Embodiments generally relate to providing litigation management for multiple remote content systems using asynchronous bi-directional replication pipelines. In some embodiments, a method includes retrieving, at one or more inbound replicators of one or more respective bi-directional pipelines, metadata associated with documents stored in one or more content repositories. The method further includes resolving, at a governance control hub, conflicts associated with legal holds on one or more of the documents based on the metadata. The method further includes sending conflict resolution results from one or more outbound applicators of the bi-directional pipelines to the content repositories, where the content repositories enforce legal holds on the documents.

Abstract: Embodiments generally relate to providing litigation management for multiple remote content systems using asynchronous bi-directional replication pipelines. In some embodiments, a method includes retrieving, at one or more inbound replicators of one or more respective bi-directional pipelines, metadata associated with documents stored in one or more content repositories. The method further includes resolving, at a governance control hub, conflicts associated with legal holds on one or more of the documents based on the metadata. The method further includes sending conflict resolution results from one or more outbound applicators of the bi-directional pipelines to the content repositories, where the content repositories enforce legal holds on the documents.

Abstract: Techniques are provided for processing a search request. One or more indexed levels of access control list information are stored in a search index for each document identified in the search index. An interim result set is generated by matching the one or more indexed levels of access control list information associated with each said document to one or more security groups associated with the search request. A final result set is generated from the interim result set by performing impersonation.