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原子配分参数、配分连接性指数及其应用 被引量:10
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作者 王超 冯长君 《无机化学学报》 SCIE CAS CSCD 北大核心 2002年第8期792-796,共5页
Based on the partition function in statistical thermodynamics, atomic partit ion parameter fi =lg[(ni-1)0.5·Ar,i] is introduced in this paper. The fi has demonstrated good unitarity for all the ground state ato ... Based on the partition function in statistical thermodynamics, atomic partit ion parameter fi =lg[(ni-1)0.5·Ar,i] is introduced in this paper. The fi has demonstrated good unitarity for all the ground state ato ms, and excellent correlativity with the standard entropies (,J·mol-1·K -1) of 70 cations in solid compounds: = -10.247+27.508 fi , r=0.996. A satisfactory curve equation is developed as follows: =6.229+13.257 fi1.5, r= 0.999. On the basis of adjacency matrices and fi , a novel partition connectivit y index is developed for the study on the standard entropies of 64 S block compo unds. The linear regression equation is set up by the least square method: =-3 9.416+33.9610H, r=0.985. The binary linear equation among and 0H, nM (princip al quantum number of the ground state atoms for S block) is drawn up: =-21.591 +32.0720H-31.013nM-1, R=0.990. The calculated values of basically tally w ith the experiment values. fi and 0H demonstrate that the method possesses the a dvantage of easy computation and clear physical significance. 展开更多
关键词 配分连接性指数 配分函数 原子配分参数 阳离子 S区化合物 标准熵 构效关系 统计热力学
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APPLICATION OF FM^mlet TRANSFORM TO SIGNAL SEPARATION
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作者 Dai Qionghai Zou Hongxing Li Yanda (Department of Automation, Tsinghua University, Beijing 100084) 《Journal of Electronics(China)》 2002年第2期133-138,共6页
Since the multicomponent signal with nonlinear time-frequency structures occupies a wide frequency band, and the spectral contents may alias, it is therefore difficult to separate the signal components and to separate... Since the multicomponent signal with nonlinear time-frequency structures occupies a wide frequency band, and the spectral contents may alias, it is therefore difficult to separate the signal components and to separate the signal from Ijackground noise. In this paper, a new signal separation method using FMmlet transform is proposed by taking the advantage that the atoms of FMm let transform can match both the linear and nonlinear time-varying structures. Theoretical predictions and numerical experiments show the feasibility of the methodology advocated. 展开更多
关键词 FMmlet transform Parametric atomic decomposition Matching pursuit. Signal separation
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