نتایج جستجو برای: dimensional non
تعداد نتایج: 1671174 فیلتر نتایج به سال:
The non-Bloch band theory can describe energy bands in a one-dimensional (1D) non-Hermitian system. On the other hand, whether be extended to higher-dimensional systems is nontrivial. In this work, we construct two classes of two-dimensional by reducing problem that for 1D model. these systems, get generalized Brillouin zone complex wave vector and investigate topological properties. model Cher...
the aim of this study has been to find answers for the following questions: 1. what is the effect of immediate correction on students pronunciation errors? 2. what would be the effect of teaching the more rgular patterns of english pronunciation? 3. is there any significant difference between the two methods of dealing with pronuciation errore, i. e., correction and the teaching of the regular ...
Using dead zones of rivers for berthing purpose may involve some problems of which the most serious are sedimentation and silting. These processes depend on water flow pattern in these zones. In this paper, a two dimensional depth averaged model is explained for flow modeling in river dead zones. Governing equations of fluid flow are discretised using the “Control Volume” method and...
although there are studies on pragmatic assessment, to date, literature has been almost silent about native and non-native english raters’ criteria for the assessment of efl learners’ pragmatic performance. focusing on this topic, this study pursued four purposes. the first one was to find criteria for rating the speech acts of apology and refusal in l2 by native and non-native english teachers...
In this paper, experimentally derived correlations of heat transfer and pressure drop are used in a Pareto based Multi-Objective Optimization (MOO) approach to find the best possible combinations of heat transfer and pressure drop of TiO2-water nanofluid flow in tubes fitted with multiple twisted tape inserts in different arrangement. In this study there are four independent design variables: t...
A theoretical solution is presented for the forced convection heat transfer of a viscoelastic fluid obeying the Giesekus constitutive equation in a concentric annulus under steady state, laminar, and purely tangential flow. A relative rotational motion exists between the inner and the outer cylinders, which induces the flow. A constant temperature was set in both cylinders, in this study. The f...
Abstract When a quantum system undergoes slow changes, the evolution of its state depends only on corresponding trajectory in Hilbert space. This phenomenon, known as holonomy, brings to light geometric aspects theory. Depending number degrees freedom involved, these purely entities can be scalar or belong matrix-valued symmetry group. In their various forms, holonomies are vital elements descr...
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