Abstract: This invention relates to a sealing apparatus, system and method for use in a well pipe. The apparatus has a mandrel arranged around a center axis through the apparatus, a radially movable gripping device arranged around the mandrel, a radially movable packer element arranged around the mandrel, and an axially movable activation device designed to set up axial forces for activating the apparatus. The apparatus also includes a radially movable centralizer arranged around the mandrel for centring the apparatus. The activation device being operatively connected to the gripping device, the packer element and the centralizer for the respective activation and radial movement of each, via power transmission of axial forces, between retracted, passive positions and expanded, active positions relative to the center axis of the apparatus.

Abstract: This invention relates to a sealing apparatus, system and method for use in a well pipe. The apparatus has a mandrel arranged around a centre axis through the apparatus, a radially movable gripping device arranged around the mandrel, a radially movable packer element arranged around the mandrel, and an axially movable activation device designed to set up axial forces for activating the apparatus. The apparatus also includes a radially movable centralizer arranged around the mandrel for centring the apparatus. The activation device being operatively connected to the gripping device, the packer element and the centralizer for the respective activation and radial movement of each, via power transmission of axial forces, between retracted, passive positions and expanded, active positions relative to the centre axis of the apparatus.

Abstract: Devices and methods for providing deterministic execution of multithreaded applications are provided. In some embodiments, each thread is provided access to an isolated memory region, such as a private cache. In some embodiments, more than one private cache are synchronized via a modified MOESI coherence protocol. The modified coherence protocol may be configured to refrain from synchronizing the isolated memory regions until the end of an execution quantum. The execution quantum may end when all threads experience a quantum end event such as reaching a threshold instruction count, overflowing the isolated memory region, and/or attempting to access a lock released by a different thread in the same quantum.

Abstract: A computer-implemented method includes receiving a plurality of uniform resource locators (URLs), where the URLs identify content files, and where the URLs include at least one parameter. Fingerprints of the content files are identified. A first entropy of values of the fingerprints conditional on values of a first parameter is determined, and a second entropy of values of the first parameter conditional on values of the fingerprints is determined. It is determined that the first parameter is irrelevant to the identification of a unique content file by the URLs based, at least in part, on the first and second entropy values.

Abstract: A computer-implemented method includes receiving a plurality of uniform resource locators (URLs), where the URLs identify content files, and where the URLs include at least one parameter. Fingerprints of the content files are identified. A first entropy of values of the fingerprints conditional on values of a first parameter is determined, and a second entropy of values of the first parameter conditional on values of the fingerprints is determined. It is determined that the first parameter is irrelevant to the identification of a unique content file by the URLs based, at least in part, on the first and second entropy values.

Abstract: Devices and methods for providing deterministic execution of multithreaded applications are provided. In some embodiments, each thread is provided access to an isolated memory region, such as a private cache. In some embodiments, more than one private cache are synchronized via a modified MOESI coherence protocol. The modified coherence protocol may be configured to refrain from synchronizing the isolated memory regions until the end of an execution quantum. The execution quantum may end when all threads experience a quantum end event such as reaching a threshold instruction count, overflowing the isolated memory region, and/or attempting to access a lock released by a different thread in the same quantum.