At the central frequency of the reduced units 0.5(ωa/2πc), when the transmission band of photonic crystaln is completely inside the band gap of photonic crystalmm, both sharing the same central frequency as their symmetry centers, mirror symmetrical photonic quantum well is formed.

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There is an original relationship between traditional hakka residential architecture and the social histories and the regional natural environments at that time. The traditional hakka residential architecture in Meizhou is established on Nature worship, and keep in harmony with natural environments. For examples, the locations of bildings are in line with local conditions; the layouts and styles are usually based on the rule of south exposure and central axis symmetry; the structures lay stress on functions and comfort and harmony with local environments. Unreasonable artificial alteration, for example, cutting slope and building house under the slope are usually triggers landslides, collapses and other geological disasters, and it has become the most dangerous and latent factor to the geological disasters. The ecological environment idea of the traditional hakka residential architecture in Meizhou region has still certain referential significance for modern residential architecture.

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Based on a low swing, low crossing point current switch driver and central symmetry Q2 random walk pMOS current source layout routing methods, a 1.8V 10 bit 120MS/s CMOS current-steering digital-to-analog converter IP core is implemented in a TSMC 0.18μm CMOS process.

采用低擺幅低交叉點的高速CMOS電流開關驅動器結構和中心對稱Q^2隨機游動對策拓撲方式的pMOS電流源陣列版圖布局方式影音先锋每日全部新资源，基于TSMC0.18μm CMOS工藝實現了一種1.8V10位120MS/s分段溫度計譯碼電流舵CMOS電流舵D/A轉換器IP核。

The independent equations of the amplitude spectrum and phase function of orthogonal filter banks were sought through function axial symmetry decomposition and centrosymmetry decomposition technique.

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From the viewpoint of axial symmetry or centrosymmetry between t and t in logic, this paper makes a minute analysis about the negation operation under different conditions in 1-order uncertainty, puts forward negation operation axiom, and does a systematic research on the definition, properties, and generation of negation operation.

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As we presented in the paper, with the evolution procedure accomplished of neurons from the single-celled organisms and multicellular animals that lack nervous system, the evolution course of nervous system could be summarized briefly as: Chaos phase, Equally nerve net, Centrilized network phase and Bilateral symmetry, hierarchical organization and cephalization phase.

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This article still further suggests a series of new conception: methods chain, methods embryo, transformation modularity, normalization modularity, symmetry modularity, harmonizati...

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Moreover, With assumption of symmetry on the domain, we show the effect of the domain topology on the number of minimal nodal solutions and give a characteristic of the number of solutions.

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We proposed a model independent approach which is based on isospin and flavor SU (3) symmetry to study charmless B decays.

在B介子無璨弱衰變方面。我們提出了一種模型依賴性較小的分析方法日本一区二区精品好黄。

Numerical simulations show that similar to their counterpart in deterministic nonlinear system some symmetry-breaking bifurcation may occur in the stochastic Duffing-Van der pol system, and Chebyshev polynomial approximation is an effective approach in solving dynamical problems of nonlinear system with random parameter.

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