Abstract Many systems may switch to an undesired state due internal failures or external perturbations, of which critical transitions toward degraded ecosystem states are prominent examples. Resilience restoration focuses on the ability spatially-extended and required time recover their desired under stochastic environmental conditions. The difficulty is rooted in lack mathematical tools analyz...

The emerging gradient nanostructured metals and alloys containing spatially graded structural components with large variations in length scale and/or mechanical properties exhibit unprecedented performance. This perspective delineates the basic features of nanostructures, i.e. spatial gradients, as well related synthesis methods, excellent tensile novel deformation mechanisms. challenges prospe...

Spatially homogeneous Bianchi type-II, VIII and IX anisotropic, as well as isotropic cosmological models can be obtained in a scalar tensor theory of gravitation proposed by Saez and Ballester (1986) when the source for energy momentum tensor is a bulk viscous fluid containing one-dimensional cosmic strings. All the models obtained and presented here are expanding, non-rotating and accelerating...

A disconnected communication link and no-visual control situation causes the difficulty of obtaining knowledge about the situation by using teleoperation from the operator. Typically, disaster area is spatially distributed, so we need an intelligent robot that can make a mutual position detection of multimodular robots. Thus, we propose a navigation algorithm and a relative motion recognition m...

The term cellular automata refers to a rather broad class of computational system. There are a number of common features, but the only universal property is that they are comprised of a number of discrete elements called cells. Each cell encapsulates some portion of the state of the system. Typically, the cell population is homogeneous, each one encapsulating an equal portion of the state, and ...

A b s t r a c t . BactoSim is an agent-based platform for simulating the conjugation in spatially structured bacterial populations, which are the conditions typically found on naturally occurring colonies such as biofilms or in agar-based laboratory cultures. The model provides a set of key indicators which can be visualized in real time as the simulation evolves and saved as for further analysis.

We employ 130 low-frequency earthquake (LFE) templates representing tremor sources on the plate boundary below southern Vancouver Island to examine LFE magnitudes. Each template is assembled from hundreds to thousands of individual LFEs, representing over 269,000 independent detections from major episodic-tremor-and-slip (ETS) events between 2003 and 2013. Template displacement waveforms for di...

Introduction: High frequency (HF) over-the-horizon radar (OTHR) relies on the refraction of electromagnetic waves by the ionosphere to detect targets at very long ranges, typically more than 500 nmi (see Fig. 1). A fundamental aspect of successful target detection is the selection of an appropriate operating frequency to ensure a large amount of backscatter energy at the desired surveillance ra...

Abstract Motivated by recent problems in mathematical cosmology, which temporal averaging methods are applied order to analyse the future asymptotics of models exhibit oscillatory behaviour, we provide a theorem concerning large-time behaviour for solutions general class systems. We thus propose our result be applicable wide range spatially homogenous cosmology with behaviour. Mathematically bu...