Abstract: Systems and methods for managing rate-controlled and scheduled workloads in distributed computing systems. One example method provides a distributed two-phase algorithm, which utilizes an external timer service and local high-resolution timers to orchestrate time critical workloads on distributed computing systems. The first phase is a planning phase implemented as a recurrent process by means of repeated registrations to the external timer service. During the planning phase, a portion or all of the workload to be performed is broken down into small batches to be assigned to computing instances for execution at a later time. The second phase is a batch execution phase. Each batch planned during the planning phase includes fine-grained instructions as to when each item within the batch is to be executed. The computing instance receiving the batch uses local high-resolution timers to synchronize the execution of items relative to one another.

Abstract: Systems, devices, and methods described herein provide protocol endpoints that execute locally within private networks and perform a set of transport-related operations specified an application-layer protocol to which messages exchanged between local applications executing within private networks and cloud applications executing in cloud computing systems conform. However, systems, devices, and methods described herein also leverage computing resources of the cloud by having the cloud applications (rather than the protocol endpoints) perform a second set of operations specified by the application-layer protocol. By functioning in this manner, systems, devices, and methods described herein facilitate real-time bidirectional communication flow between local applications executing within private networks and cloud applications without exposing the private networks to the public Internet and without using a VPN (thereby avoiding the problematic overhead of a VPN) with respect to real-time communications.

Abstract: A method of localizing a scintillation event in a scintillation camera is disclosed.

Abstract: A method of localizing a scintillation event in a scintillation camera is disclosed.

Abstract: The position calculation system has position and energy calculators for each scintillation event. After correcting the position and energy values using tables, non-uniform random distribution variance values are added to the position and energy values with the variance added being a product of the random number and a constant precalibrated for the given position. The variance injected position and energy values have a more uniform resolution and substantially remove artifact characteristics in the scintillation camera's image.