动力环境网络监控精细管理

叙述动力环境运行质量分析管理，包括故障管理，性能管理和专题分析管理，以动力环境网络监控细致八微、言之有据的月度分析管理实例展现了其精细管理的效果。     

生化分析仪光学系统的研究与设计

光学系统是自动生化分析仪的核心部件,其性能的好坏将直接影响整机性能。根据生化分析的检测要求,通过理论分析和实验对该仪器光学系统的各个部分进行了研究和设计。实现了两种设计方案,通过实验分析选择了较优的方案。     

S1240一次呼叫转移命令不成功故障的排除

对S1240交换机一次呼叫转移命令不成功故障排除的过程进行了分析。     

闪电AR谱的多重分形特性分析及放电类型的识别

对闪电时域波形的分形研究由于忽略了其频率特性,致使复杂多变的闪电过程的全部特性无法得到充分表征。针对此问题,本文将多重分形理论引入到现代谱估计中,提出了一种基于AR(auto-regressive)谱的闪电电场信号的多重分形特性分析及放电类型的识别方法。首先基于AR模型谱估计法获得闪电电场信号的功率谱,然后,通过多重分形去趋势波动分析(multifractal detrended fluctuation analysis,MF-DFA) 法验证了闪电AR谱序列具有多重分形特性,并进一步对AR谱序列的Hurst指数以及多重分形谱进行了讨论,最后将相关参数作为闪电信号的有效特征值输入支持向量机进行了云闪(intracloud lightning) 和地闪(cloud-to-ground lightning,CG) 不同放电类型的识别。实验结果表明,本文方法对云、地闪信号的有效识别率达到了94%以上,该研究成果对闪电的特性研究与自动化识别技术均具有一定的参考价值。     

Implication of fractal geometry for fluid flow properties of sedimentary rocks

It is demonstrated that a certain amount of order can be extracted from an apparently random distribution of pores in sedimentary rocks by exploiting the scaling characteristics of the geometry of the porespace with the help of fractal statistics. A simple fractal model of a sedimentary rock is built, and is tested against both the Archie law for conductivity and the Carman-Kozeny equation for permeability. We demonstrate how multifractal scaling of pore-volume can be used as a tool for rock characterization by computing its experimentalf() spectrum, which can be modelled by a simple two-scale Cantor set.     

Multifractal analysis for Cu/Ti bilayer thin films

Two bilayer thin films with different stacking sequences, Cu/Ti/Si and Ti/Cu/Si, were deposited by DC magnetron sputtering technique. X‐ray diffraction technique was used to measure the crystallization structures, and scanning electron microscopy and atomic force microscopy were used to measured surface morphology. The multifractal spectra f(α)‐α was used to characterize the surface morphology. The result of |q|_max ≤ 53 is obtained by multifractal analysis. The shape of the multifractal spectra f(α) ? α is hook‐like for Cu/Ti/Si and bell jar‐like for Ti/Cu/Si. The spectrum width Δα = α_max ? α_min and Δf(=f(α_min) ? f(α_max)) of the multifractal spectra is able to quantitatively analyze the growth and surface roughness of the Cu/Ti bilayer thin films. The surface of Ti/Cu/Si thin film is more uniform and smoother than the film of Cu/Ti/Si. Copyright © 2013 John Wiley & Sons, Ltd.     

A Theoretical Model for Release Dynamics of an Antifungal Agent Covalently Bonded to the Chitosan

The aim of the study was to create a mathematical model useful for monitoring the release of bioactive aldehydes covalently bonded to the chitosan by reversible imine linkage, considered as a polymer–drug system. For this purpose, two hydrogels were prepared by the acid condensation reaction of chitosan with the antifungal 2-formyl-phenyl-boronic acid and their particularities; influencing the release of the antifungal aldehyde by shifting the imination equilibrium to the reagents was considered, i.e., the supramolecular nature of the hydrogels was highlighted by polarized light microscopy, while scanning electron microscopy showed their microporous morphology. Furthermore, the in vitro fungicidal activity was investigated on two fungal strains and the in vitro release curves of the antifungal aldehyde triggered by the pH stimulus were drawn. The theoretical model was developed starting from the hypothesis that the imine-chitosan system, both structurally and functionally, can be assimilated, from a mathematical point of view, with a multifractal object, and its dynamics were analyzed in the framework of the Scale Relativity Theory. Thus, through Riccati-type gauges, two synchronous dynamics, one in the scale space, associated with the fungicidal activity, and the other in the usual space, associated with the antifungal aldehyde release, become operational. Their synchronicity, reducible to the isomorphism of two SL(2R)-type groups, implies, by means of its joint invariant functions, bioactive aldehyde compound release dynamics in the form of “kink–antikink pairs” dynamics of a multifractal type. Finally, the theoretical model was validated through the experimental data.     

适应3G的动环监控系统特点分析

本文主要概括了动力环境集中监控系统的发展历程、架构及标准情况,重点分析了在3G移动通信系统中动力环境集中监控的主要特点及解决方案。     

基于MF-DCCA的呼吸道疾病与大气污染物相关性分析

针对呼吸道系统疾病与大气PM2.5、SO2浓度序列的相关性特征,应用多重分形消除趋势波动分析法(MF-DCCA),对张家界市永定区呼吸道系统疾病患病人数与大气PM2.5、S02浓度序列进行了研究.结果发现该地区呼吸道系统疾病患病人数与大气PM2.5、So2浓度的相关性具有长期持续特征和多重分形特征.随后对它们相关性多重...     

调频广播信号降噪处理的小波分析

简述了小波分析的理论基础以及降噪原理．比较了常用的三种小波函数。对某广播电台测得的调频广播信号．分别用db小波、sym小波和Coif小波进行信号分解．采取软阈值的方法进行降噪处理．然后重构降噪后的信号。最后指出了小波属性对降噪结果的影响。