Due to resource sharing among tasks, priority inversion can occur during prioritydriven preemptive scheduling. In this work, we investigate solutions to the priority inversion problem in a real-time database environment where two-phase locking is employed for concurrency control. We examine two basic schemes for addressing the priority inversion problem, one based on priority inheritance and th...

Although correspondence between the poles of a continuous-time and sampled-data system with a piecewise constant input is simple and desirable from the stability viewpoint, the relationship between zeros is intricate. Inversion of a sampled-data system is mostly unstable irrespective of the stability of the continuous-time counterpart. This makes it difficult to apply inversionbased control tec...

Monitoring the rock-physics properties of subsurface is great importance for reservoir management. For either oil and gas applications or CO2 storage, seismic data are a valuable source information tracking changes in elastic which can be related to fluids saturation pressure within reservoir. Changes estimated with time-lapse full-waveform inversion. properties, such as saturation, inversion u...