排序方式: 共有33条查询结果,搜索用时 0 毫秒
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Wei-qiang Zhou~ 《高分子科学》2008,(1):81-90
The copolymerization of dibenzofuran(DBF)and 3-methylthiophene(MET)was successfully achieved electrochemically by direct anodic oxidation of the monomer mixtures in boron trifluoride diethyl etherate.The effects of applied polymerization potential and the monomer concentration ratios on the copolymerization were investigated by linear sweep voltammetry and cyclic voltammetry(CV).The structure of copolymer films were investigated by UV-Vis,infrared spectroscopy,thermal analysis.As-formed novel copolymers ... 相似文献
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杨守志 《应用数学和力学(英文版)》2006,27(12):1687-1695
Poly-scale refinable function with dilation factor a is introduced. The existence of solution of poly-scale refinable equation is investigated. Specially, necessary and sufficient conditions for the orthonormality of solution functionφof poly-scale refinable equation with integer dilation factor a are established. Some properties of poly-scale re-finable function are discussed. Several examples illustrating how to use the method to construct poly-scale refinable function are given. 相似文献
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一类分形函数及其维数估计 总被引:3,自引:0,他引:3
本文作者首先借助于b进制分数及无穷级数构造了一类分形函数,然后研究了这些函数图象的分形维数及其Hoelder性质,得到了一些维数结果。 相似文献
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引入伸缩因子为a的多-尺度加细函数和平移不变子空间的概念.研究了多-尺度加细方程解存在的条件.特别地,给出这种方程的解是正交的充分必要条件.建立了多-尺度加细函数与两尺度加细函数之间的关系.并讨论了它们的一些性质.最后给出相应的构造算例. 相似文献
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Wu Shou-zhi 《应用数学和力学(英文版)》1994,15(11):1081-1085
Because of the great needs both for the research of pansystem mathematics and for the analysis of general things’ mechanism,
this paper discusses the binary relation’s transitivity confined to multirelation. The so-called “g-transitivity” a completely
new concept about transitivity—is introduced and its basic properties are investigated. The study shows that it is not only
g-transitivity a generalization of traditional transitivity, quasi-transitivity, semi-order, quasi-order and other panorder,
but also includes many important concepts such as closenss, convexity, topology, duality as its special cases. 相似文献