Rogue waves are extraordinarily high and steep isolated waves, which appear suddenly in a calm sea and disappear equally fast. However, though the rogue waves are localized surface waves, their theoretical models and experimental observations are available mostly in one dimension, with the majority of them admitting only limited and fixed amplitude and modular inclination of the wave. We propos...

We derive the asymptotic equations governing the evolution of a quasi-monochromatic optical pulse in a nonresonant quadratic material starting from Maxwell equations. Under rather general assumptions, equations of nonlinear Schrödinger (NLS) type with coupling to mean fields result (here called NLSM). In particular, if the incident pulse is polarized along one of the principal axes of the mater...

appearing a new field of psychiatry called social psychiatry and its applied field , community psychiatry , the attentions have been drawn toward socio- cultural factors in determining different pathologies and even some theories have been stated. psychiatric symptoms are considered as deviation from social norms and being mental patient is viewed as a social role. severe mental disorders are e...

this paper aims not to study sadra’s viewpoint on the language of qur’an but aims to offer sadra’s division of and criticisms on the different approaches to the language of qur’an. therefore, this study has been conducted on the negative dimension and has a critical attitude and is not going to study on the positive dimension and to explain sadra’s viewpoint; although recognition of this negati...

following the categorical approach to universal algebra through algebraic theories, proposed by f.~w.~lawvere in his phd thesis, this paper aims at introducing a similar setting for general topology. the cornerstone of the new framework is the notion of emph{categorically-algebraic} (emph{catalg}) emph{topological theory}, whose models induce a category of topological structures. we introduce t...