Geostrophic tripolar vortices in a two-layer fluid: Linear stability and nonlinear evolution of equilibria

stability and attraction domains of traffic equilibria in day-to-day dynamical system formulation

در این پژوهش مسئله واگذاری ترافیک را از دید سیستم های دینامیکی فرمول بندی می کنیم.فرض کرده ایم که همه فاکتورهای وابسته در طول زمان ثابت باشند و تعادل کاربر را از طریق فرایند منظم روزبه روز پیگیری کنیم.دینامیک ترافیک توسط یک نگاشت بازگشتی نشان داده می شود که تکامل سیستم در طول زمان را نشان می دهد.پایداری تعادل و دامنه جذب را توسط مطالعه ویژگی های توپولوژیکی تکامل سیستم تجزیه و تحلیل می کنیم.پاید...

Stability of Rectilinear Geostrophic Vortices in Stationary Equilibrium

A hemispherical barotropic model of global-3cale atmospheric motions is studied in a planar approximation using three K (Bessel)-vortices of equal strength y and length scale g" to represent the sub-tropical semipermanent high pressure systems. In equilibrium tl-3se anticyclonic vortices are equally spaced on a latit ade circle of radius a. One K -vortex of strength -y is used o 0 ' o to simula...

Stability of relative equilibria of three vortices

Nonlinear Stability of Two – Layer Flows ∗

We study the dynamics of two–layer, stratified shallow water flows. This is a model in which two scenarios for eventual mixing of stratified flows (shear-instability and internal breaking waves) are, in principle, possible. We find that unforced flows cannot reach the threshold of shearinstability, at least without breaking first. This is a fully nonlinear stability result for a model of strati...

a synchronic and diachronic approach to the change route of address terms in the two recent centuries of persian language

terms of address as an important linguistics items provide valuable information about the interlocutors, their relationship and their circumstances. this study was done to investigate the change route of persian address terms in the two recent centuries including three historical periods of qajar, pahlavi and after the islamic revolution. data were extracted from a corpus consisting 24 novels w...