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The interlayer hybridization(IH) of van der Waals(vdW) materials is thought to be mostly associated with the unignorable interlayer overlaps of wavefunctions(t) in real space. Here, we develop a more fundamental understanding of IH by introducing a new physical quantity, the IH admixture ratio α. Consequently, an exotic strategy of IH engineering in energy space can be proposed, i.e., instead of changing t as commonly used, α can be effectively tuned in energy space by changing the on-site energ... 相似文献
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本文提出优化视角下专家权重信息未知的区间直觉模糊三支群决策方法。首先利用区间直觉模糊加权平均算子集结不同专家提供的区间直觉模糊损失评价,获得群体综合损失评价结果。以专家个体与群体综合评价相似度越髙,越能反映群体综合评价意见且赋予髙的专家权重为原则,分别构建专家权重信息完全未知和部分已知的权重确定模型。进而建立确定区间直觉模糊三支决策概率阈值对的优化模型,并提出基于专家权重信息未知的区间直觉模糊三支群决策方法。最后,算例分析及比较结果表明所提出方法的有效性。 相似文献
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A Closed Cavity measuring platform is built on the basis of a 1000 W-class direct current(DC)-discharge drived continuous-wave(CW) HF/DF chemical laser. On this platform, the absorption coefficients of optical thin films coated on the surfaces of monocrystalline silicon substrates, at the wavelength of 3.6–4.1 μm, is measured, when the power density on the surfaces of optical thin films reaches about 3.16 kW ∕cm2. The measuring principle and structure of the Closed Cavity is introduced. The temperature curves and balanced temperature rises of the film-substrate systems under test measured through the experiment is presented in this Letter. The experiments show high reliability, good repeatability and strong practicality. The Closed Cavity measuring platform is applicable for not only absorption measurement but other performance measurement of optical thin films under high power density. 相似文献
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<正>Even after more than 30 years of intensive effort,the understanding of physical origin accounting for the high-temperature superconductivity in cuprates remains the open question in condensed matter physics. A possible way to solve this long-standing question is to find other cuprate-analogous structures. 相似文献
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多尺度决策系统的知识获取是当今的研究热点之一。然而,在处理实际数据时,多尺度决策系统中的条件属性值之间可能存在优劣关系,决策属性取值可能为模糊数。针对这一类多尺度决策系统的知识获取问题,本文构建了多尺度优势模糊目标粗糙集模型,给出了该模型的最优尺度选择算法,并讨论了获取所有最优尺度约简的分辨矩阵法和获取一个最优尺度约简的简便算法。最后将本文提出的多尺度优势模糊粗糙集模型、最优尺度选择和规则获取算法应用于计算机审计风险评估,得到较为合理的评估规则。 相似文献
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Consistent Riccati expansion solvability,symmetries, and analytic solutions of a forced variable-coefficient extended Korteveg-de Vries equation in fluid dynamics of internal solitary waves 下载免费PDF全文
We study a forced variable-coefficient extended Korteweg-de Vries (KdV) equation in fluid dynamics with respect to internal solitary wave. Bäcklund transformations of the forced variable-coefficient extended KdV equation are demonstrated with the help of truncated Painlevé expansion. When the variable coefficients are time-periodic, the wave function evolves periodically over time. Symmetry calculation shows that the forced variable-coefficient extended KdV equation is invariant under the Galilean transformations and the scaling transformations. One-parameter group transformations and one-parameter subgroup invariant solutions are presented. Cnoidal wave solutions and solitary wave solutions of the forced variable-coefficient extended KdV equation are obtained by means of function expansion method. The consistent Riccati expansion (CRE) solvability of the forced variable-coefficient extended KdV equation is proved by means of CRE. Interaction phenomenon between cnoidal waves and solitary waves can be observed. Besides, the interaction waveform changes with the parameters. When the variable parameters are functions of time, the interaction waveform will be not regular and smooth. 相似文献
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