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一类具抽象边界的迁移算子本质谱 被引量:3
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作者 吴红星 王胜华 《辽宁工程技术大学学报(自然科学版)》 CAS 北大核心 2014年第1期141-144,共4页
为得到迁移算子的本质谱的分布情况,在1L空间研究板几何中具抽象边界条件各向异性、连续能量的迁移方程解的渐近性态.采用算子理论和比较算子等方法,在边界算子是部分光滑和扰动算子是正则的条件下,证明了该迁移算子H A产生0C半群的Dyso... 为得到迁移算子的本质谱的分布情况,在1L空间研究板几何中具抽象边界条件各向异性、连续能量的迁移方程解的渐近性态.采用算子理论和比较算子等方法,在边界算子是部分光滑和扰动算子是正则的条件下,证明了该迁移算子H A产生0C半群的Dyson-Phillps展开式的第九阶余项9R(t)在1L空间中是弱紧算子,从而得到了该迁移算子生成的半群V(t)和streaming算子H B生成的半群U(t)有相同的本质谱半径. 展开更多
关键词 迁移方程 抽象边界条件 部分光滑 正则性 比较算子法 余项 紧性 本质谱
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Method based on fuzzy linguistic scale and FIOWGA operator for decision-making problems 被引量:3
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作者 徐泽水 达庆利 《Journal of Southeast University(English Edition)》 EI CAS 2003年第1期88-91,共4页
In this paper, we present a fuzzy linguistic scale, which is characterized by triangular fuzzy numbers on [1/9, 9], for the comparison between two alternatives, and introduce a possibility degree formula for comparing... In this paper, we present a fuzzy linguistic scale, which is characterized by triangular fuzzy numbers on [1/9, 9], for the comparison between two alternatives, and introduce a possibility degree formula for comparing triangular fuzzy numbers. We utilize the fuzzy linguistic scale to construct a linguistic preference matrix, and propose a fuzzy induced ordered weighted geometric averaging (FIOWGA) operator to aggregate linguistic preference information. A method based on the fuzzy linguistic scale and FIOWGA operator for decision-making problems is presented. Finally, an illustrative example is given to verify the developed method and to demonstrate its feasibility and effectiveness. 展开更多
关键词 fuzzy linguistic scale triangular fuzzy numbers FIOWGA operator
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