We study the spectral stability of a family of periodic standing wave solutions to the generalized KdV (g-KdV) in a neighborhood of the origin in the spectral plane using what amounts to a rigorous Whitham modulation theory calculation. In particular we are interested in understanding the role played by the null directions of the linearized operator in the stability of the traveling wave to per...

We study the spectral stability of a family of periodic standing wave solutions to the generalized KdV (g-KdV) in a neighborhood of the origin in the spectral plane using what amounts to a rigorous Whitham modulation theory calculation. In particular we are interested in understanding the role played by the null directions of the linearized operator in the stability of the traveling wave to per...

Background:High quality and supportive relationships is essential to develop healthy individuals in all aspects of life. This study deals with the marital instability frequency and its predisposing factors and predictors in a representative sample of Mashhad, Iran, in 2014. Methods:In a cross-sectional study, a total number of 583 couples participated. A checklist and the marital instability in...

Background: People with functional ankle instability are deficient in various factors that need to overcome all these problems via a multifaceted and combined exercises. Therefore, the main purpose of this semi- research is to study the effect of the comprehensive combined program on kinematic of lower limb in active men suffering from chronic ankle instability. Methods: The subjects of this r...

BACKGROUND Recurrent anterior shoulder instability after coracoid process transfers may be caused by trauma, sports injury, or technical failure of the index procedure. Surgical techniques vary with regard to graft orientation and positioning and number of screws utilized for fixation. PURPOSE To identify surgical and patient-related factors associated with failure, defined as the need for re...