Results 31 to 40 of about 956,734 (158)
Gaoya dianqi, 2011 小波网络是近年来神经网络研究中的一个新分支,是结合小波变换理论与神经网络的思想构造的一种新的神经网络模型。笔者构造的前馈小波神经网络是将小波分析与BP神经网络融合,以Gauss小波及其伸缩平移系作为隐含层小波基函数并且对小波神经网络做了一些改进。选择了300组油中溶解气体含量作为前馈小波神经网络训练及故障识别的样本,并对仿真结果进行分析。实验结果显示:文中构造的小波神经网络适合变压器故障诊断,其性能优于改良IEC法,传统BP神经网络法和基于主成分分析法的BP神经网络 ...
方健, 彭辉, 李自品, 舒乃秋
doaj
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT MXenes have been widely investigated as microwave absorption (MA) materials because of their unique properties. This study introduces a terminal bond manipulation strategy to enhance charge transfer and polarization in Ti3C2Tx, optimizing its MA performance.
Xiang Fang +8 more
wiley +1 more source
Riesz basis-based reproducing kernel and SVM(基于Riesz基的再生核及支持向量机)
Zhejiang Daxue xuebao. Lixue ban, 2004 在支持向量机(SVM)技术中，再生核的选择起着重要作用.利用L2(R)中的一组Riesz基构造再生核，并将其推广到应用广泛的正交小波.在基于正交小波的再生核Hilbert空间中考虑函数的正则化逼近，对基于正交小波再生核的SVM结合小波分析进行探讨，得到SVM的离散逼近，离散细节均只与支持向量有关.
ZHOUDe-qiang(周德强) +1 more
doaj +1 more source
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Metal oxide‐based catalysts for oxygen reduction reaction (ORR) have drawn great attention in recent years. However, it remains technically challenging for the precise regulation of the overall performance due to the trade‐off effect among the activity, selectivity, and stability of electrocatalysts. Herein, a balancing strategy to control the
Haoran Ma +7 more
wiley +1 more source
The Microstructure Evolution and Mechanical Properties of (FeCoCrNi)100‐x(AlCu)x High‐Entropy Alloys
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT This study systematically investigates the effects of AlCu addition on the microstructural evolution and mechanical properties of (FeCoCrNi)100‐x(AlCu)x (x = 0, 5, 10, 15, 20; at%) high‐entropy alloys (HEAs). The results reveal that the microstructure evolves from coarse equiaxed to refined equiaxed, dendritic, and ultimately dual‐phase ...
Shunfu Xie +7 more
wiley +1 more source
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT The construction of p–n homojunctions represents a promising strategy for effective solar‐driven photocatalytic hydrogen evolution, owing to their inherent advantages of superior lattice matching and minimized charge transfer resistance. However, this approach remains largely unexplored.
Yueqiang Lin +6 more
wiley +1 more source
Gaoya dianqi, 2001 本文采用了不同小波函数及不同尺度参数对含强载波干扰的局部放电信号进行连续小波变换 ,并对小波变换结果进行了定量对比分析。仿真结果表明 ,在采样频率一定的情况下 ,不同的小波函数只有在各自的最佳尺度参数下对干扰的抑制能力才是最强的 ,因此 ,只有选取合适的小波函数及其最佳尺度参数才能更加有效地抑制周期载波干扰。
李祥飞, 邹莉华, 张泰山
doaj
Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT Porous NiTi alloys are widely used in biomedical and engineering fields. Using the PBF‐LB technique, the TPMS and Voronoi porous parts with a porosity of ∼67% and a minimum feature size of 0.15 ± 0.02 mm were fabricated. Although the bulk sample fabricated with the same parameters is defect‐free, μ‐CT reconstruction on the porous sample ...
Wen‐Hao Zeng +7 more
wiley +1 more source
Gaoya dianqi, 2000 本文描述了以小波变换为基础的滤波技术在高压冲击波形参数提取中的应用。新的数学工具———小波变换的引入使得波形处理更加简单。为检验其适用性 ,从消除白噪声和提取波形参数两方面进行了试验 ,并与Kalman滤波作了对比。结果表明 ,高压冲击试验中 ,小波变换的滤波效果较好 ,计算的波形参数也更准确。
王国利, 郝艳捧, 何义, 李彦明
doaj
, 2022 東京海洋大学博士(海洋科学)東京海洋大学博士学位論文 2022年度(2022年9月) 応用環境システム学 課程博士 甲第635号指導教員: 婁小波doctoral ...
姚, 微, ヨウ, ビ, Yao, Wei
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