Abstract: Example implementations relate to validation testing of computing systems. An example includes a computing device including a controller, a memory, and a storage storing instructions executable to: receive a plurality of validation test updates from a plurality of test systems, where each validation test update comprises test data and a line item label, and where the test data indicates a progress level of a validation test of a computing system; generate a plurality of validation test records in a database based on the received plurality of validation test updates; determine a set of line item labels to be included in a test summary report; identify a set of validation test records in the database that match the determined set of line item labels; and generate the test summary report based on the identified set of validation test records that match the set of line item labels.

Abstract: A hydraulic fracturing system and method are disclosed. The system includes a pulse-inducing system configured to deliver pulses of fluid to a fluid stream upstream of the wellbore. The pulse-inducing system can include at least one supplemental pump, at least one pulsation valve, and at least one pressure storage vessel. A hydraulic fracturing method can comprise generating a fluid stream via a primary pumping system, generating a pulsed output via a pulse-inducing system, and directing the pulsed output into the fluid stream upstream of a wellbore.

Abstract: A hydraulic fracturing system and method are disclosed. The system can include a manifold having a first fluid outlet, a second fluid outlet, and a plurality of fluid inlets. The system can also include primary pumps, which are fluidically coupled to one of the fluid inlets, wherein the primary pumps are configured to deliver a first fluid stream to the first fluid outlet and a second fluid stream to the second fluid outlet. The system can further include a supplemental pump fluidically coupled to the second fluid outlet, wherein the supplemental pump is configured to deliver pulses of fluid to the first fluid stream.

Abstract: A hydraulic fracturing system and method are disclosed. The system include a pulse-inducing system configured to deliver pulses of fluid to a fluid stream upstream of the wellbore. The pulse-inducing system can include at least one supplemental pump, at least one pulsation valve, and at least one pressure storage vessel. A hydraulic fracturing method can comprise generating a fluid stream via a primary pumping system, generating a pulsed output via a pulse-inducing system, and directing the pulsed output into the fluid stream upstream of a wellbore.

Abstract: A hydraulic fracturing system and method are disclosed. The system can include a manifold having a first fluid outlet, a second fluid outlet, and a plurality of fluid inlets. The system can also include primary pumps, which are fluidically coupled to one of the fluid inlets, wherein the primary pumps are configured to deliver a first fluid stream to the first fluid outlet and a second fluid stream to the second fluid outlet. The system can further include a supplemental pump fluidically coupled to the second fluid outlet, wherein the supplemental pump is configured to deliver pulses of fluid to the first fluid stream.

Abstract: A server-platform simulation service process involves receiving requests for server-platform simulation service. Simulation scenes including checkpoint simulation scenes corresponding to respective requests are identified. Respective computer hosts for executing said server-platform simulator based on the identified scenes are configured. Users are provided access to the computer hosts configured with the identified scenes.

Abstract: Fan blades are provided that increase aerodynamic and operational efficiency, and which include baffle elements positioned on the distal ends of the fan blades. The baffle elements operate by shearing blade tip vortices, thereby minimizing turbulent fluid effects, and further providing fluid shunt that imparts a radial velocity component to the fluid. The baffle elements produce a more focused and collimated fluid flow perpendicular to the plane of rotation during forward rotation, and produce a more diffuse, radially-outward directed fluid flow during reverse rotation. The baffle elements are positioned such that they are characterized by a first angle with respect to the radial axis of the fan blade and a second angle with respect to the low pressure surface of the fan blade.

Abstract: One disclosed method includes retrieving a sensor reading, incrementing a reading change counter and setting a stable reading counter in response to the sensor reading not equaling an immediately previous sensor reading, reporting a sensor reading bouncing error and resetting the reading change counter in response to the reading change counter being greater than or equal to a reading change tolerance, incrementing the stable reading counter in response to the sensor reading equaling the immediately previous sensor reading, resetting the stable reading counter and reading change counter in response to the stable reading counter being greater than or equal to a stable reading tolerance, reporting a state change event and setting the most-recent stable sensor reading equal to the sensor reading in response to the sensor reading not being equal to the most-recent stable sensor reading, and setting the previous sensor reading to the sensor reading.

Abstract: A method includes determining if a sensor reading has changed, determining, in response to the sensor reading having changed, if the sensor reading is toggling, reporting, in response to the sensor reading toggling, a bouncing sensor-state error, determining, in response to the sensor reading having not changed, if the sensor reading is stable, determining, in response to the sensor reading being stable, if the sensor reading is different from a most-recent stable sensor reading, and reporting, in response to the sensor reading being different from a most-recent stable sensor reading, a sensor state change.

Abstract: A self-seating valve with compressive release is provided. The invention includes a tubular valve body which is capable of elastic axial compression by means of the compression of circumferential compression rings. A diametrical bar supports a longitudinal valve stem at the end of which is affixed a valve element adjacent to a valve seat. Upon the axial compression of the valve body, the valve stem is axially displaced thereby lifting the valve from the valve seat.