Self-organized criticality emerges in dynamical complex systems driven out of equilibrium and characterizes a wide range of classical phenomena in physics, geology, and biology. We report on a quantum coherence-controlled self-organized critical transition observed in the light localization behavior of a coherence-driven nanophotonic configuration. Our system is composed of a gain-enhanced plas...

We review a striking array of recent experiments and their theoretical interpretations on the superfluid transition in 4He in the presence of a heat flux Q . We define and evaluate a new set of critical point exponents. The statics and dynamics of the superfluid-normal interface are discussed, with special attention to the role of gravity. If Q is in the same direction as gravity, a self-organi...

It is shown in this note that some matching-related properties of graphs, such as their factor-criticality, regularizability and the existence of perfect 2-matchings, are preserved when iterating Mycielski’s construction.

Designing for orchestration needs an emphasis on the criticality of the teacher’s agency, skills and understanding of pedagogies and technologies in orchestrating the classroom beyond the provision of material scripts and technological supports. Drawing on data from the collaborative classrooms that use a collaborative technology called GroupScribbles (GS), we share the work of a teacher who su...

Forest fire models have been widely studied from the context of self-organized criticality and from the ecological properties of the forest and combustion. On the other hand, reaction-diffusion equations have interesting applications in biology and physics. We propose here a model for fire propagation in a forest by using hyperbolic reaction-diffusion equations. The dynamical and thermodynamica...

Using Criticality To Attack Performance Bottlenecks

E-learning, one of the tools emerged from information technology, has been integrated in many university programs. There are several factors that need to be considered while developing or implementing university curriculums that oVer e-learning based courses. This paper is intended to specify e-learning critical success factors (CSFs) as perceived by university students. The published e-learnin...

We show that the N = 2 superstring in d = 2D ≥ 6 real dimensions, with criticality achieved by including background charges in the two real time directions, exhibits a " coordinate-freezing " phenomenon, whereby the momentum in one of the two time directions is constrained to take a specific value for each physical state. This effectively removes this time direction as a physical coordinate, le...