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In this paper we first introduce random topological degree, and then we use random topological degree to prove some new random fixed point theorems which are the randomization of the wellknown classical theorems of AItman and Krasnosalskii etc. We also proved some other new random fixed point theorems. We first introduce topological degree method to random fixed posnt theory. 相似文献
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基于超巨磁阻(CMR)材料在金属-绝缘体(M-I)转变点附近的巨大电阻变化,设计并测试了一种新型超巨磁阻测辐射热仪(CMR bolometer).用外延法生长的La0.67Ca0.33MnO3 薄膜作为测辐射热仪的辐射敏感元件,测量了该器件对黑体和He-Ne激光器的光学响应.所测的信号、噪声都随调制频率的上升而下降,但对于He-Ne激光源,它的信噪比却没有明显的改变.测量了薄膜铁磁金属态和顺磁绝缘态的信号-温度关系,最强的信号出现在靠近M-
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超巨磁阻 相似文献
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M.A.Krasnosel′skii [1] proposed that "under what conditions does the solution of convex operator equation Ax=x exist and unique?".Because problem itself is more difficult, its development is quite slow.Lately Guo Da-Jun[2]suggested explicitiy that "under what conditions does u_0-convex operator have unique positive fixed point?". 相似文献
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BaTiO3 thin films in seven thousands of unit-cell layers have been successfully fabricated on SrTiO3 (001) substrates by laser molecular beam epitaxy. The fine streak pattern and the undamping intensity oscillation of reflection high-energy electron diffraction indicate that the BaTiO3 film was layer-by-layer epitaxial growth. The measurements of scanning electron microscopy and atomic force microscopy show that surfaces of the BaTiO3 thin film are atomically smooth. The measurements of x-ray diffraction and transmission electron microscopy, as well as selected-area electron diffraction reveal that the BaTiO3 thin film is a c-oriented epitaxial crystalline structure. 相似文献
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