نتایج جستجو برای: wsm
تعداد نتایج: 248 فیلتر نتایج به سال:
The quantum Hall effect in three-dimensional Weyl semimetal (WSM) receives significant attention for the emergence of Fermi loop where underlying two-dimensional conductivity, namely, sheet shows quantized plateaus. In tilt multi-Weyl semimetals (mWSMs) lattice models, we systematically study Landau levels (LLs) and magneto-Hall conductivity both under parallel perpendicular magnetic field (ref...
امروزه کوشش می شود با استفاده از روش ها و مدل های گوناگون، سطوح برخورداری مناطق مختلف سنجش شوند. این امکان وجود دارد که نتایج حاصل از به کارگیری این روش ها، متفاوت باشند. هدف از انجام پژوهش حاضر، به کارگیری روش های تصمیم گیری چندشاخصه در تعیین سطوح برخورداری دهستان های شهرستان کامیاران است. روش تحقیق توصیفی ـ تحلیلی است و اطلاعات مورد نیاز به روش اسنادی گردآوری شده ا ند. نتایج حاصل از این پژوهش...
The use of the high-order Flux Reconstruction (FR) spatial discretization scheme for LES on unstructured meshes is investigated. Simulations of the compressible Taylor-Green vortex at Re = 1600 demonstrate that the FR scheme has low numerical dissipation and accurately reproduces the turbulent energy cascade at low resolution, making it ideal for high-order LES. To permit the use of subgrid-sca...
Problems associated with annual grain agriculture, such as soil erosion and water and air pollution, indicate that reliance on annual grain production is a fundamental problem of current agricultural practice (23). Annual plant roots are less efficient micromanagers of water, soil, and soil nutrients than their perennial counterparts, resulting in nutrient and pesticide contamination of water s...
A technique to provide quite accurate monitoring of small displacements by means of ASAR ScanSAR acquisition is here presented. This technique merges the advantages provided by Permanent Scatterers, namely the high accuracy, and the correlation over wide temporal and spatial baselines, with the advantages provided by WSM, in terms of short revisiting time and global coverage. It is then possibl...
Wireless Sensor Network (WSN) is a combination of homogeneous and heterogeneous sensor nodes which are physically deployed at different places. Heterogeneous WSM can be characterized with different parameters such as hardware resources, application, services, software platform and network. WSN are powerful technology, which is used to build up many applications in the era of technological devel...
Weyl semimetals (WSMs) constitute a 3D phase with linearly dispersing Weyl excitations at low energy, which lead to unusual electrodynamic responses and open Fermi arcs on boundaries. We derive a simple criterion to identify and characterize WSMs in an interacting setting using the exact electronic Green's function at zero frequency, which defines a topological Bloch Hamiltonian. We apply this ...
Weyl (WSMs) evolve from Dirac semimetals in the presence of broken time-reversal symmetry (TRS) or space-inversion symmetry. The WSM phases in TaAs-class materials and photonic crystals are due to the loss of space-inversion symmetry. For TRS-breaking WSMs, despite numerous theoretical and experimental efforts, few examples have been reported. In this Article, we report a new type of magnetic s...
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