Abstract: System and methods for presenting updated data using persisting views is disclosed. An example method comprises: identifying a first dataset and a second dataset; tracking updates to rows in each of the first dataset and the second dataset using a first local marker and a second local marker, respectively; performing a join between the first dataset and the second dataset; creating a materialized view using the join; identifying updates to one or more rows of the first dataset and the second dataset; identifying rows in the materialized view corresponding to the one or more rows of the first dataset and the second dataset with the identified updates, and updating, by one or more processing devices, the identified rows in the materialized view based on the identified updates to the one or more rows of the first dataset and the second dataset.

Abstract: System and methods for presenting updated data using persisting views is disclosed. An example method comprises: identifying a first dataset and a second dataset; tracking updates to rows in each of the first dataset and the second dataset using a first local marker and a second local marker, respectively; performing a join between the first dataset and the second dataset; creating a materialized view using the join; identifying updates to one or more rows of the first dataset and the second dataset; identifying rows in the materialized view corresponding to the one or more rows of the first dataset and the second dataset with the identified updates, and updating, by one or more processing devices, the identified rows in the materialized view based on the identified updates to the one or more rows of the first dataset and the second dataset.

Abstract: A magnetic fluid rotary feedthrough has a multi-stage magnetic fluid rotary seal adapted to provide a magnetic fluid seal about a shaft for extending between a first environment and a second environment, one or more sensors integrally mounted within the magnetic fluid rotary feedthrough to sense one or more physical parameters of the multi-stage magnetic fluid rotary seal, signal processing electronics mounted to or incorporated in the magnetic fluid rotary feedthrough to receive one or more sensor output signals from the one or more sensors, to process the one or more sensor output signals and to output one or more electronic processing signals, and one or more output devices operatively connected to receive the one or more electronic processing signals from the signal processing electronics to indicate the condition of the multi-stage magnetic fluid rotary seal.

Abstract: An ultrasonic generator comprising an input module for receiving a power signal. An output module for outputting an ultrasonic signal is also included in the generator. A motherboard is coupled to both the input module and the output module. The motherboard includes a digital controller adapted to control the input module and the output module.

Abstract: A system for providing power to more than one ultrasonic welding probe from a single power supply. The system includes a first multiple probe subassembly having a first jack for connection to a first ultrasonic welding probe and a second jack for connection to a second ultrasonic welding probe. The system also includes a second multiple probe subassembly having a third jack for connection to a third ultrasonic welding probe and a fourth jack for connection to a fourth ultrasonic welding probe. At least one connector connects the first multiple probe subassembly to the second multiple probe subassembly.

Abstract: A system for providing power to more than one ultrasonic welding probe from a single power supply. The system includes a first multiple probe subassembly having a first jack for connection to a first ultrasonic welding probe and a second jack for connection to a second ultrasonic welding probe. The system also includes a second multiple probe subassembly having a third jack for connection to a third ultrasonic welding probe and a fourth jack for connection to a fourth ultrasonic welding probe. At least one connector connects the first multiple probe subassembly to the second multiple probe subassembly.

Abstract: An ultrasonic welding probe power supply for powering more than one ultrasonic welding probe with power is provided. The power supply is adapted to provide power only to one welding probe at a time. A ringdown period is monitored between termination of provision of power to a first probe and the initiation of provision of power to a second probe during which provision of power to the second probe is disabled. Circuitry is provided within an ultrasonic welding probe controller to monitor probe activity and to control the interval between termination of provision of power to one probe and the initiation of provision of power to a second probe so that efficient and safe switching is made among ultrasonic probes.