We report direct high resolution observation of nonlinear steepened plasma waves excited in the wake of an intense, self-pinched electron beam. Oscillations in both accelerating and deflecting fields are measured, and analyzed in the context of linear and nonlinear plasma wave theory. The degree of nonlinearity in the wakr-fields is shown to be consistent with analytical predictions of the beam...

Two families of derivative free two-point iterative methods for solving nonlinear equations are constructed. These methods use a suitable parametric function and an arbitrary real parameter. It is proved that the first family has the convergence order four requiring only three function evaluations per iteration. In this way it is demonstrated that the proposed family without memory supports the...

Regarding increasing importance of tank wagons and efficiency in fluids transportation, their usage is increasing every day. Thus paying attention to their designs just as dynamic analysis of wagons during travelling time is vitally important. In this task, sloshing coefficient as prominent parameter in tank wagons designing has been investigated. To ease of efficient design, theses parameters ...

Second Language Acquisition (SLA) is a complex psychosomatic process. As per educational psychology, its acquisition process depends on some affective determinants related to learners' self-confidence that accelerates learners’ zeal of learning the language. However, studies are rare empirically explore factors or ways help learners build their level. Thus, prime focus this study find out assoc...

the main objective of this article is to identify and evaluate the accelerating factor in the iranian oil nationalization movement. the main question is: what was the accelerating factor that put the iranian oil nationalization movement into practice? the article relies on the reform movement theory of neil smelser. for this purpose, fraud in the 16thnational election of the parliament, and est...