Abstract: A sample ratio mismatch (SRM) analyzer receives data from an online controlled experiment (OCE) and provides information to help determine a root cause of an SRM. The SRM analyzer may identify one or more segments in the data that include an SRM and may determine whether a triggered scorecard of the OCE includes an SRM. The data may include one or more scorecards. The SRM analyzer may determine whether each scorecard has an SRM. The SRM analyzer may test a difference in proportion of users assigned to treatment between a last scorecard without an SRM and a first scorecard with an SRM. If the difference in proportion is statistically meaningful, the SRM analyzer may determine that the SRM arose after the last scorecard. If the difference in proportions is not statistically meaningful, the SRM analyzer may determine that the SRM existed from a beginning of the OCE.

Abstract: A utility knife includes a handle having a body and a receiving aperture. The utility knife further includes a collet at least partially receivable in the receiving aperture, and a sleeve that is engageable with and that surrounds the collet. The collet is configured to alternately receive one of a portion of a blade of a first type in a first slot and a portion of a blade of a second type in a second slot. The collet and the sleeve are co-rotatable relative the handle to move the collet to a secured position in which one of the blade of the first type and the blade of the second type are secured to the collet.

Abstract: A biological sample collection system and dispensing system is described. The biological sample collection system provides for collection and processing of a biological sample (i.e. bodily fluids collected from nose, throat, or other mucosal membrane of an animal or human). The biological sample collection system includes a sample collector and a collection tube. The sample collector provides a structure for sealing the biological sample in the collection tube for further processing without opening the collection tube, and may provide a structure for collecting the biological sample. When the sample collector and collection tube are removably attached the dispensing system is formed. The dispensing system provides for further processing of the biological sample without opening the collection tube (i.e. without un-securing or removing the plug from the collection tube). The dispensing system further provides dispensing of the processed biological sample without opening the collection tube).

Abstract: A process for separating a fusion mix sample comprising a slag material and a collector material using a separator. The separator comprising a plurality of impact members configured to rotate. The process comprising the steps of providing a solid fusion mix sample and loading the solid sample into the separator. Dislodging the slag material from the solid fusion mix sample by rotating the impact members and contacting the rotating impact members and the solid fusion mix sample. Separating into a first fraction substantially comprising the collector material and a second fraction substantially comprising slag material.

Abstract: Methods and systems to develop routes for an aircraft to travel through an airspace. The system includes interface circuitry to receive one or more objectives and one or more constraints for the routes. Processing circuitry is configured to optimize the routes based on one or more of the input parameters. The processing circuitry is configured to: generate a set of routes that each comprise a different flight path through the airspace; rank the routes in the set based on how each of the routes dominates the other routes based on the one or more objectives and constraints; maintain dominant routes in the set and eliminate dominated routes from the set based on the rankings; generate additional dominant routes based on the one or more objectives and constraints; and supplement the set with the additional dominant routes.

Abstract: A sample ratio mismatch (SRM) analyzer receives data from an online controlled experiment (OCE) and provides information to help determine a root cause of an SRM. The SRM analyzer may identify one or more segments in the data that include an SRM and may determine whether a triggered scorecard of the OCE includes an SRM. The data may include one or more scorecards. The SRM analyzer may determine whether each scorecard has an SRM. The SRM analyzer may test a difference in proportion of users assigned to treatment between a last scorecard without an SRM and a first scorecard with an SRM. If the difference in proportion is statistically meaningful, the SRM analyzer may determine that the SRM arose after the last scorecard. If the difference in proportions is not statistically meaningful, the SRM analyzer may determine that the SRM existed from a beginning of the OCE.

Abstract: The present disclosure provides a novel apparatus for the movement of air. Specifically, the apparatus is an axial fan assembly which is rotatable about a horizontal axis to orient the axial fan in a vertical position, a horizontal position, or positions in between. The axial fan can be adjusted and selectively fixed in a particular orientation. The height of the axial fan is also adjustable. The vertical support member comprises a telescoping mechanism whereby the length of the vertical support member is adjustable and can be selectively fixed at a particular length.