Evolution of a coronal loop in response to an impulsive energy release is numerically modelled. It is shown that the loop density evolution curves exhibit quasi-periodic perturbations with the periods given approximately by the ratio of the loop length to the average sound speed, associated with the second standing harmonics of an acoustic wave. The density perturbations have a maximum near the...

Cockroaches recover rapidly from perturbations during high-speed running that allows them to cross unstructured terrains with no change in gait. Characterization of the exoskeletal material properties of the legs suggests that passive mechanical feedback could contribute to the self-stabilizing behavior. We imposed large, dorsal-ventrally directed impulsive perturbations to isolated hind legs h...

Abstract In this work, we consider impulsive dynamical systems evolving on an infinite-dimensional space and subjected to external perturbations. We look for stability conditions that guarantee the input-to-state such systems. Our new dwell-time allow situation, where both continuous discrete dynamics can be unstable simultaneously. Lyapunov like methods are developed purpose. Illustrative fini...

In this paper, an impulsive conformable fractional Lotka–Volterra model with dispersion is introduced. Since the concept of derivatives avoids some limitations classical fractional-order derivatives, it more suitable for applied problems. The control approach which common population dynamics’ models and fixed moments perturbations are considered. combined practical stability respect to manifold...

regarding the importance of the prevention of hazards and adverse environmental impacts in industrial and populated areas such as southern parts of tehran city, the response of impulsive period ground-supported tanks were assessed. having considered the study area's soil properties, the response of ground-supported tanks was modelled. regarding the soil properties of southern parts of tehran, t...