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In this paper, a miniaturized quarter-wavelength rectangular patch antenna with coaxial feed is proposed. The resonance frequency of the proposed antenna is simulated and measured so that the relationship between its mechanical deformation and resonance frequency can be determined. Also, additional tensile tests are employed to further clarify the relationship by increasing strain increments per loading...
Infrared imaging technology has gained more attention and become an interesting method in electrical maintenance. This paper proposes a novel method for current transformer recognition and location in infrared images. K-means algorithm is used in current transformer segmentation while an expansion-corrosion algorithm is applied to denoise and eliminate small pieces of equipment such as power lines...
This paper introduces a novel approach for processing a general class of structured information, viz., a graph of graphs structure, in which each node of the graph can be described by another graph, and each node in this graph, in turn, can be described by yet another graph, up to a finite depth. This graph of graphs description may be used as an underlying model to describe a number of naturally...
The paper studied an approach to purification of CS2 waste gas in low concentration using biological trickling filter. The results of preliminary experiment showed that, when the gas flow was 100-500mg/m3, the CS2 removal efficiency arrives percent 70-78% by using trickling filter, But the biological elimination of CS2 in waste gas could be increased from 2.06mg/(L h) to 22.52mg/(L h); meanwhile the...
Semiconductor manufacturing is one of the most complex manufacturing process. And job scheduling is a major problem in the semiconductor operation. A method of job scheduling in semiconductor manufacturing lines is proposed based on genetic algorithm and simulated annealing algorithm. Firstly each job is given a set of machine processing set* based on genetic algorithm, then the processing sequence...
We report a theoretical, numerical and experimental study of condensation of classical optical waves. The condensation of observed directly, as a function of nonlinearity and wave kinetic energy, in a self-defocusing photorefractive crystal.
We experimentally demonstrate an all-optical Richtmyer-Meshkov instability, in which a shock wave is incident on an intensity interface. Intensity fingering and shear-generated vortices are observed for both 1D and 2D shock-wave impulses.
We study nonlinear beam propagation in a fractal waveguide array, created by optically-inducing nested periodic arrays in a self-defocusing photorefractive crystal. Nonlinear mode coupling and energy transport between the folded bands is demonstrated.
We observe the propagation of 1D Airy beams through an unbiased photorefractive crystal. For ordinary polarization, the beam diffracts, while for extraordinary polarization it experiences nonlinearity through charge diffusion and has its diffraction suppressed.
We demonstrate, theoretically and experimentally, an all-optical Rayleigh-Taylor instability. Observations of the characteristic spatial period as a function of intensity difference, nonlinearity, and refractive index gradient show excellent agreement with analytical calculations from perturbation theory.
Hybrid thin-film solar cells are fabricated on the glass substrate using ZnO nanorods, well-aligned single-crystalline Si nanowires (SiNWs), and poly(3-hexylthiophene):[6,6]-phenyl-C61-butyric acid methyl ester (P3HT:PCBM) as well as micro-structured III-V semiconductors . The effect of introducing a solution-processed fullerene as an electron transport layer on the polymer/ZnO nanorod array composite...
As more and more Web Services appear on the public Internet, Quality of Service (QoS) becomes one of the most important factors for Web Service selection. Meanwhile, accuracy and speed of Web Service selection come to be the new barriers. Focusing on those QoS attributes that are measurable on client-side, this paper proposes a new Web Service selecting model, extending the general searching architecture...
We experimentally and theoretically study nonlinear propagation in a rotating waveguide array, created by propagating a self-rotating vortex lattice inside a self-defocusing photorefractive crystal. Non-inertial effects on discrete diffraction and soliton formation are observed.
We experimentally and theoretically study nonlinear propagation in a rotating waveguide array, created by propagating a self-rotating vortex lattice inside a self-defocusing photorefractive crystal. Non-inertial effects on discrete diffraction and soliton formation are observed.
We study dispersive shock waves in optical lattices. We characterize shock propagation as a function of lattice depth and observe nonlinear coupling between different Bloch modes of the array.
We experimentally demonstrate dispersive optical shock waves in ID and 21), characterize their nonlinear properties, and observe the complex interactions when two such shocks collide.
We experimentally demonstrate degenerate four-wave mixing effects in a defocusing nonlinear photorefractive medium, in both one and two transverse dimensions.
k-ε Turbulence model have been widely used for the numerical simulation of centrifugal pump. It includes the standard k-ε model, the renormalization group (RNG) k-ε model and the Realizable k-ε model. In order to examine their applicability, a series of steady numerical simulations of centrifugal pump at the design point and at eight off-design points were carried out with these three kinds of turbulence...
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