Self-healing solitonic slip pulses in frictional systems.

A prominent spatiotemporal failure mode of frictional systems is self-healing slip pulses, which are propagating solitonic structures that feature a characteristic length. Here, we numerically derive a family of steady state slip pulse solutions along generic and realistic rate-and-state dependent frictional interfaces, separating large deformable bodies in contact. Such nonlinear interfaces feature a nonmonotonic frictional strength as a function of the slip velocity, with a local minimum.

Convivialité des municipalités canadiennes à l'égard des aînés : portrait et facteurs associés.

Objectives: This study aimed to (1) document, globally and by domain, Canadian municipalities' level of age-friendliness, and (2) identify municipality characteristics most associated with age-friendliness.

Methods: A cross-sectional survey was sent to all Canadian municipalities (N=3406) with an online survey of 56 items from 9 domains providing age-friendliness scores. These scores were then crossed with the following municipality characteristics: percentage of adults aged 65 and older, population density, material deprivation, social deprivation, degree of metropolitan influence, implementation step of an age-friendly municipality initiative and geographic area.

Topological Defects in Solids with Odd Elasticity.

Crystallography typically studies collections of point particles whose interaction forces are the gradient of a potential. Lifting this assumption generically gives rise in the continuum limit to a form of elasticity with additional moduli known as odd elasticity. We show that such odd elastic moduli modify the strain induced by topological defects and their interactions, even reversing the stability of, otherwise, bound dislocation pairs.