Ancient plate speeds

Monsoon speeds up Indian plate motion

Failure mode transition speeds in an impact loaded prenotched plate with four thermoviscoplastic relations

Four different thermoviscoplastic relations, namely, the Litonski–Batra, Johnson–Cook, Bodner–Partom and the power law are used to model the thermoviscoplastic response of a material. Each one of these relations accounts for strain hardening, strain-rate hardening and thermal softening of the material. The material parameters in these relations are found by solving an initial-boundary-value pro...

Multiple Speeds

The natural fault-tolerant properties and regular structure of the Lee-Lu-Lee’s array multiplier over GF(2) fields make it very attractive for VLSI implementation. However, the Lee-Lu-Lee’s array multiplier is time-consuming while comparing with other existing array multipliers. Thus, we will present fast array multipliers with multiple speeds as comparing with the Lee-Lu-Lee’s array multiplier.

Spreading speeds as slowest wave speeds for cooperative systems.

It is well known that in many scalar models for the spread of a fitter phenotype or species into the territory of a less fit one, the asymptotic spreading speed can be characterized as the lowest speed of a suitable family of traveling waves of the model. Despite a general belief that multi-species (vector) models have the same property, we are unaware of any proof to support this belief. The p...

Study of the Boundary Layer at Supersonic Speeds in Turbulent Flow: Case of Flow along a Flat Plate*

The flow of a gaseous fluid past a rigid, smooth half-plane, parallel to the asymptotic velocity of the stream, is studied. The edge of the half-plane (leading edge) is assumed to be orthogonal to the stream, and, in addition, it is assumed that the flow is everywhere "turbulent". The motion within the boundary layer is investigated in an attempt to clarify many of the assumed and conjectured f...