Abstract: Sealing in rotary positive displacement machines based on trochoidal geometry that comprise a helical rotor that undergoes planetary motion within a helical stator is described. Seals can be mounted on the rotor, the stator, or both. The rotor can have a hypotrochoidal cross-section, with the corresponding stator cavity profile being the outer envelope of the rotor as it undergoes planetary motion, or the stator cavity can have an epitrochoidal cross-section with the corresponding rotor profile being the inner envelope of the trochoid as it undergoes planetary motion. In some embodiments, the geometry is offset in a manner that provides advantages with respect to sealing in the rotary machine. In multi-stage embodiments, the rotor-stator geometry remains substantially constant or varies along the axis of the rotary machine.

Abstract: Rotary positive displacement machines based on trochoidal geometry and including a helical rotor that undergoes planetary motion relative to a helical stator can be designed and configured so that the axial load or rotor pressure force is positive, negative, or neutral. In some embodiments, a change in axial load, caused by a change in differential pressure across the machine, can be used to trigger a change in a mechanical configuration of the machine.

Abstract: A ceramic matrix composite includes a ceramic matrix, fibers embedded in the ceramic matrix, and an interfacial coating system on each of the fibers. The interfacial coating system includes alternating layers of boron nitride layers of individual thicknesses of about 50 nanometers to 200 nanometers and carbon layers of individual thicknesses of less than 5 nanometers.

Abstract: A method for verifying video statistics of a content hosting platform includes enrolling, by a measurement service, a client device as a panel client device to provide panel reports independent of the content hosting platform, and sending a panel sniffer module to the panel client device. The panel sniffer module to cause the panel client device to send panel reports to the measurement service, and the panel reports include first video statistics of playback of a video by a player executing on the panel client device. The method also includes receiving a panel report from the panel client device and receiving a measurement report from the content hosting platform. The measurement report is generated by the content hosting platform and includes second video statistics of the playback. The method also includes verifying accuracy of the second video statistics by comparing the first video statistics to the second video statistics.

Abstract: A method for verifying video statistics of a content hosting platform includes enrolling, by a measurement service, a client device as a panel client device to provide panel reports independent of the content hosting platform, and sending a panel sniffer module to the panel client device. The panel sniffer module to cause the panel client device to send panel reports to the measurement service, and the panel reports include first video statistics of playback of a video by a player executing on the panel client device. The method also includes receiving a panel report from the panel client device and receiving a measurement report from the content hosting platform. The measurement report is generated by the content hosting platform and includes second video statistics of the playback. The method also includes verifying accuracy of the second video statistics by comparing the first video statistics to the second video statistics.

Abstract: A census server provides measurement reports describing clients accessing a specified network-based service to a measurement agency via a network. The census server receives census events from clients used by users via the network. The census events describe usage of a network-based service by the clients. The census server processes the census events to produce measurement reports describing the usage of the network-based service. The processing includes filtering specified information out of the census events to prevent the measurement reports from identifying the users of the clients. The measurement agency may use the measurement reports, for example, to describe how the clients tend to access and use the service.

Abstract: Marketing techniques are disclosed that allow companies to efficiently identify target businesses to solicit for purchase of advertising products. One embodiment includes a map-based interface for selecting a neighborhood and locating any businesses known to a company selling advertising products in that area, with the intent of allowing a company representative to select a set of those businesses to contact regarding the company's advertising products. The map displays business listings as markers on the map, with color-coding used to indicate listings the representative has already contacted, and listings that some other representative has contacted.

Abstract: Marketing techniques are disclosed that allow companies to efficiently identify target businesses to solicit for purchase of advertising products. One embodiment includes a map-based interface for selecting a neighborhood and locating any businesses known to a company selling advertising products in that area, with the intent of allowing a company representative to select a set of those businesses to contact regarding the company's advertising products. The map displays business listings as markers on the map, with color-coding used to indicate listings the representative has already contacted, and listings that some other representative has contacted.