Current research in mixed-criticality systems assumes that any task of lower criticality levels can be dropped at anytime in order to guarantee the schedulability of tasks of higher criticality levels. However, in an industrial mixedcriticality system, tasks may interfere with each other only under certain scenarios. Currently a designer does not have any means to specify or control this. The p...

A rigorous understanding of brain dynamics and function requires a conceptual bridge between multiple levels of organization, including neural spiking and network-level population activity. Mounting evidence suggests that neural networks of cerebral cortex operate at criticality. How operating near this network state impacts the variability of neuronal spiking is largely unknown. Here we show i...

This paper addresses the knowledge criticality question: what knowledge is critical to the focal task and therefore, needs to be retrieved. It argues that knowledge criticality is not an objective construct and that people’s prior task knowledge which consists of two dimensions: knowledge domain and expertise level, as well as social knowledge has an effect on what knowledge they perceive as cr...

Experimental evidence for self-organised criticality (SOC) in nonconservative systems has recently been found in studies of rat cortical slices. The size distribution of observed neuronal avalanches has been attested to obey 3/2 powerlaw scaling. A mean-field sandpile model of a noisy neuronal system is proposed to refute the irreconcilability between non-conservation and criticality put forwar...

Whereas the relationship between criticality of gene regulatory networks (GRNs) and dynamics of GRNs at a single cell level has been vigorously studied, the relationship between the criticality of GRNs and system properties at a higher level has remained unexplored. Here we aim at revealing a potential role of criticality of GRNs at a multicellular level which are hard to uncover through the si...

Brain activity displays a large repertoire of dynamics across the sleep-wake cycle and even during anesthesia. It was suggested that criticality could serve as a unifying principle underlying the diversity of dynamics. This view has been supported by the observation of spontaneous bursts of cortical activity with scale-invariant sizes and durations, known as neuronal avalanches, in recordings o...

The existence of true scale-invariance in slowly driven models of selforganized criticality without a conservation law, as forest-fires or earthquake automata, is scrutinized in this paper. By using three different levels of description (i) a simple mean field, (ii) a more detailed mean-field description in terms of a (self-organized) branching processes, and (iii) a full stochastic representat...

The complexity of industrial embedded systems is increasing continuously. Companies try to keep a leading position by offering additional functionalities and services. Systems are to be composed by multiple sensor, actuation and computation subsystems running in a coordinated way on a distributed platform. Due to the increment in processor power, it is possible to allocate a large number of fun...

a r t i c l e i n f o a b s t r a c t Keywords: Real-time systems Mixed-criticality Fixed-priority scheduling Schedulability analysis Priority assignment algorithm The design of mixed-criticality systems is often subject to mandatory certification and has been drawing considerable attention over the past few years. This letter studies fixed-priority scheduling of mixed-criticality systems on a ...