نتایج جستجو برای: arrays of dipoles
تعداد نتایج: 21169963 فیلتر نتایج به سال:
With regard to the dry climatic conditions of Iran, cob and gypsum mortars were used in architectural arrays of many regions of Iran, to create the scratch coat (Arriccio) and fine coat (Intonaco) in the historical periods. The thickness of the fine coat was often very low (one-two mm). In this regard, one of the examples is the City of Yazd. One of the buildings made in the eighth century (Isl...
Some phospholipids (e.g. lecithin) form a system of electric dipoles on the membrane surface layer. In the case of lecithin the positive dipole charge is located on the choline and the negative one on the phosphoric molecule group. These dipoles are arranged almost parallel to the membrane surface. Taking the dipole membrane structure as a base for further investigations, a computer model of th...
In this paper, the spatial MIMO channel modeling (SCM) is introduced and the required parameters for this modeling are studied. Then, the MIMO channel gains and capacity are analyzed. The transmitter and receiver antenna patterns are also analyzed. Next, we are focused on the effects of the transmitter and receiver antenna arrays separations, the arrays length, and the angles spread on the ante...
Abstract Artificially created media allow employing material parameters as additional valuable degrees of freedom in tailoring electromagnetic scattering. In particular, metamaterials with either negative permeability or permittivity creating deeply subwavelength resonant structures relatively high scattering cross-sections. However, the equivalence principle allows replacing volumetric properl...
the main purpose of this note is to establish some bounds in poisson approximation for row-wise arrays of independent geometric distributed random variables using the operator method. some results related to random sums of independent geometric distributed random variables are also investigated.
rr HE AEROVOX RESEARCH WORKER for July, 1949 contained a discussion of the fundamental properties of the half -wave dipole antenna and defined three basic configurations in which multiple dipoles are used to obtain desirable directional effects in transmitting or receiving radio signals. These arrangements included; collinear dipoles, broadside dipoles, and end -fire dipoles of both the driven ...
Conventionally, edges are treated as either scalar or vector quantities. This paper presents a novel framework which treats edges as directional dipoles that induce the eld around themselves. An analogy can be made between this concept and the interaction of magnetic dipoles with the magnetic eld. The dipoles interact with the eld and align themselves into a smooth contour connguration. This pa...
Distribution of Residual Stresses in Polymer Reinforced Carbon Nanotubes and Laminated Carbon Fibers
In this study, the distribution of residual stress in fiber-reinforced nanocomposites is investigated. Fiber-reinforced nanocomposite is composed of three substances: carbon fiber, carbon nanotube (CNT), and polymer matrix. Unit cells in hexagonal packing array with different arrays as unit cell, 3*3 and 5*5 arrays have been selected as suitable for finite element analysis of residual stresses....
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