Abstract: A showerhead assembly includes a showerhead with an upper portion including a gas channel extending in a first direction and having a first width in a second direction. A lower portion is connected to the upper portion and includes a faceplate including a plurality of gas through holes extending vertically through the faceplate in the first direction and a baffle plate arranged on a plurality of posts above the faceplate and below an outlet of the gas channel. A gas plenum is defined between the upper portion and the lower portion, extends in the second direction, and is in fluid communication with the gas channel. The showerhead assembly includes a back side gas system to supply gas to a bellows volume defined by a bellows arranged around an upper portion of the showerhead. First and second annular gas flows are supplied across an outer surface of the showerhead.

Abstract: Multiple listlets function as a single master linked list to manage data packets across one or more banks of memory in a first-in first-out (FIFO) order, while allowing multiple push and/or pop functions to be performed per cycle. Each listlet can be a linked list that tracks pointers and is stored in a different memory bank. The nodes can include a pointer to a data packet, a pointer to the next node in the listlet and a next listlet identifier that identifies the listlet that contains the next node in the master linked list. The head and tail of each listlet, as well as an identifier each to track the head and tail of the master linked list, can be maintained in cache. The individual listlets are updated accordingly to maintain order of the master linked list as pointers are pushed and popped from the master linked list.

Abstract: Multiple listlets function as a single master linked list to manage data packets across one or more banks of memory in a first-in first-out (FIFO) order, while allowing multiple push and/or pop functions to be performed per cycle. Each listlet can be a linked list that tracks pointers and is stored in a different memory bank. The nodes can include a pointer to a data packet, a pointer to the next node in the listlet and a next listlet identifier that identifies the listlet that contains the next node in the master linked list. The head and tail of each listlet, as well as an identifier each to track the head and tail of the master linked list, can be maintained in cache. The individual listlets are updated accordingly to maintain order of the master linked list as pointers are pushed and popped from the master linked list.

Abstract: An impression estimation system for estimating visual impressions of a plurality of vehicles configured with exterior graphic messaging. A mobile device application of each of a plurality of mobile devices associated with the plurality of vehicles generates vehicle mobility data. A computational platform includes a processor and program code which, when executed by the processor, causes the processor to, with respect to each vehicle of the plurality of vehicles: (i) identify, using the vehicle mobility data, one or more of the road segments in which the vehicle was present; (ii) estimate, using the traffic volume data, a number of potential visual impressions of the vehicle within the road segments; (iii) determine an estimated number of visual impressions; (iv) generate visual impression information based at least in part upon the estimated number of visual impressions; and (v) cause display of the visual impression information.

Abstract: In general, the subject matter described in the specification can be embodied in methods, systems and program products for a verified participant database system that verifies information on potential participants for surveys and promotions that require numerous participants with certain characteristics. Among other features, the verified participant database system aggregates and preferably verifies information, for example, the demographic and purchasing information, of potential participants by receiving permission to obtain information from third-party sources.

Abstract: An impression estimation system for estimating visual impressions of a plurality of vehicles configured with exterior graphic messaging. A mobile device application of each of a plurality of mobile devices associated with the plurality of vehicles generates vehicle mobility data. A computational platform includes a processor and program code which, when executed by the processor, causes the processor to, with respect to each vehicle of the plurality of vehicles: (i) identify, using the vehicle mobility data, one or more of the road segments in which the vehicle was present; (ii) estimate, using the traffic volume data, a number of potential visual impressions of the vehicle within the road segments; (iii) determine an estimated number of visual impressions; (iv) generate visual impression information based at least in part upon the estimated number of visual impressions; and (v) cause display of the visual impression information.

Abstract: An impression estimation system for estimating visual impressions of a plurality of vehicles configured with exterior graphic messaging. A mobile device application of each of a plurality of mobile devices associated with the plurality of vehicles generates vehicle mobility data. A computational platform includes a processor and program code which, when executed by the processor, causes the processor to, with respect to each vehicle of the plurality of vehicles: (i) identify, using the vehicle mobility data, one or more of the road segments in which the vehicle was present; (ii) estimate, using the traffic volume data, a number of potential visual impressions of the vehicle within the road segments; (iii) determine an estimated number of visual impressions; (iv) generate visual impression information based at least in part upon the estimated number of visual impressions; and (v) cause display of the visual impression information.

Abstract: In general, the subject matter described in the specification can be embodied in methods, systems and program products for a verified participant database system that verifies information on potential participants for surveys and promotions that require numerous participants with certain characteristics. Among other features, the verified participant database system aggregates and preferably verifies information, for example, the demographic and purchasing information, of potential participants by receiving permission to obtain information from third-party sources.

Abstract: In general, the subject matter described in the specification can be embodied in methods, systems and program products for a verified participant database system that verifies information on potential participants for surveys and promotions that require numerous participants with certain characteristics. Among other features, the verified participant database system aggregates and preferably verifies information, for example, the demographic and purchasing information, of potential participants by receiving permission to obtain information from third-party sources.

Abstract: Multiple listlets function as a single master linked list to manage data packets across one or more banks of memory in a first-in first-out (FIFO) order, while allowing multiple push and/or pop functions to be performed per cycle. Each listlet can be a linked list that tracks pointers and is stored in a different memory bank. The nodes can include a pointer to a data packet, a pointer to the next node in the listlet and a next listlet identifier that identifies the listlet that contains the next node in the master linked list. The head and tail of each listlet, as well as an identifier each to track the head and tail of the master linked list, can be maintained in cache. The individual listlets are updated accordingly to maintain order of the master linked list as pointers are pushed and popped from the master linked list.

Abstract: In general, the subject matter described in the specification can be embodied in methods, systems and program products for a verified participant database system that verifies information on potential participants for surveys and promotions that require numerous participants with certain characteristics. Among other features, the verified participant database system aggregates and preferably verifies information, for example, the demographic and purchasing information, of potential participants by receiving permission to obtain information from third-party sources.

Abstract: Multiple listlets function as a single master linked list to manage data packets across one or more banks of memory in a first-in first-out (FIFO) order, while allowing multiple push and/or pop functions to be performed per cycle. Each listlet can be a linked list that tracks pointers and is stored in a different memory bank. The nodes can include a pointer to a data packet, a pointer to the next node in the listlet and a next listlet identifier that identifies the listlet that contains the next node in the master linked list. The head and tail of each listlet, as well as an identifier each to track the head and tail of the master linked list, can be maintained in cache. The individual listlets are updated accordingly to maintain order of the master linked list as pointers are pushed and popped from the master linked list.

Abstract: An impression estimation system for estimating visual impressions of a plurality of vehicles configured with exterior graphic messaging. A mobile device application of each of a plurality of mobile devices associated with the plurality of vehicles generates vehicle mobility data. A computational platform includes a processor and program code which, when executed by the processor, causes the processor to, with respect to each vehicle of the plurality of vehicles: (i) identify, using the vehicle mobility data, one or more of the road segments in which the vehicle was present; (ii) estimate, using the traffic volume data, a number of potential visual impressions of the vehicle within the road segments; (iii) determine an estimated number of visual impressions; (iv) generate visual impression information based at least in part upon the estimated number of visual impressions; and (v) cause display of the visual impression information.

Abstract: An impression estimation system for estimating visual impressions of a plurality of vehicles configured with exterior graphic messaging. A mobile device application of each of a plurality of mobile devices associated with the plurality of vehicles generates vehicle mobility data. A computational platform includes a processor and program code which, when executed by the processor, causes the processor to, with respect to each vehicle of the plurality of vehicles: (i) identify, using the vehicle mobility data, one or more of the road segments in which the vehicle was present; (ii) estimate, using the traffic volume data, a number of potential visual impressions of the vehicle within the road segments; (iii) determine an estimated number of visual impressions; (iv) generate visual impression information based at least in part upon the estimated number of visual impressions; and (v) cause display of the visual impression information.

Abstract: A work conserving scheduler can be implemented based on a ranking system to provide the scalability of time stamps while avoiding the fast search associated with a traditional time stamp implementation. Each queue can be assigned a time stamp that is initially set to zero. The time stamp for a queue can be incremented each time a data packet from the queue is processed. To provide varying weights to the different queues, the time stamp for the queues can be incremented at varying rates. The data packets can be processed from the queues based on the tier rank order of the queues as determined from the time stamp associated with each queue. To increase the speed at which the ranking is determined, the ranking can be calculate from a subset of the bits defining the time stamp rather than the entire bit set.

Abstract: An impression estimation system for estimating visual impressions of a plurality of vehicles configured with exterior graphic messaging. A mobile device application of each of a plurality of mobile devices associated with the plurality of vehicles generates vehicle mobility data. A computational platform includes a processor and program code which, when executed by the processor, causes the processor to, with respect to each vehicle of the plurality of vehicles: (i) identify, using the vehicle mobility data, one or more of the road segments in which the vehicle was present; (ii) estimate, using the traffic volume data, a number of potential visual impressions of the vehicle within the road segments; (iii) determine an estimated number of visual impressions; (iv) generate visual impression information based at least in part upon the estimated number of visual impressions; and (v) cause display of the visual impression information.

Abstract: A work conserving scheduler can be implemented based on a ranking system to provide the scalability of time stamps while avoiding the fast search associated with a traditional time stamp implementation. Each queue can be assigned a time stamp that is initially set to zero. The time stamp for a queue can be incremented each time a data packet from the queue is processed. To provide varying weights to the different queues, the time stamp for the queues can be incremented at varying rates. The data packets can be processed from the queues based on the tier rank order of the queues as determined from the time stamp associated with each queue. To increase the speed at which the ranking is determined, the ranking can be calculate from a subset of the bits defining the time stamp rather than the entire bit set.

Abstract: A work conserving scheduler can be implemented based on a ranking system to provide the scalability of time stamps while avoiding the fast search associated with a traditional time stamp implementation. Each queue can be assigned a time stamp that is initially set to zero. The time stamp for a queue can be incremented each time a data packet from the queue is processed. To provide varying weights to the different queues, the time stamp for the queues can be incremented at varying rates. The data packets can be processed from the queues based on the tier rank order of the queues as determined from the time stamp associated with each queue. To increase the speed at which the ranking is determined, the ranking can be calculate from a subset of the bits defining the time stamp rather than the entire bit set.

Abstract: A video clip editor for use with a touch screen interface is provided. A slidable film reel element can be moved backwards and forwards to allow a user to specify which actions to take on particular frames within a video clip/segment. Related apparatus, systems, techniques and articles are also described.