Wavelet-Based Estimation for Univariate Stable Laws

Stable distributions are characterized by four parameters which can be estimated via a number of methods, and although approximate maximum likelihood estimation techniques have been proposed, they are computationally intensive and difficult to implement. This article describes a fast, wavelet-based, regression-type method for estimating the parameters of a stable distribution. Fourier domain representations, combined with a wavelet multiresolution approach, are shown to be effective and highly efficient tools for inference in stable law families. Our procedures are illustrated and compared with other estimation methods using simulated data, and an application to a real data example is explored. One novel aspect of this work is that here wavelets are being used to solve a parametric problem, rather than a nonparametric one, which is the more typical context in wavelet applications.     

煤着火特性的实验研究

建立热态实验台模拟链条炉内实际的燃烧过程 ,对煤的着火特性进行研究测试 .对实验方法及原理进行了论述 .实验结果对层燃锅炉 ,特别是链条炉排锅炉的实际运行提供一定的依据     

图论在网络出版传播中的应用

利用图论理论研究了网络连通度与广播时间的关系问题 ,获得了网络单信息广播时间的一个界和最少时间广播网的几个充分条件 ,并建立了一个有效的广播方案 .     

On trees with a maximum proper partial 0-1 coloring containing a maximum matching

I prove that in a tree in which the distance between any two endpoints is even, there is a maximum proper partial 0-1 coloring such that the edges colored by 0 form a maximum matching.     

串联型开关稳压电源的改进与仿真

对黄河牌HC47-Ⅲ型彩色电视机开关稳压电源进行了分析，通过改变电源结构调整了电源输出特性，并借助Protel DXP进行了模拟仿真，验证了改进的可行性和正确性。     

Biologically-inspired stochastic vector matching for noise-robust information processing

“End of Moore’s Law” has recently become a topic. Keeping the signal-to-noise ratio (SNR) at the same level in the future will surely increase the energy density of smaller-sized transistors. Lowering the operating voltage will prevent this, but the SNR would inevitably degrade. Meanwhile, biological systems such as cells and brains possess robustness against noise in their information processing in spite of the strong influence of stochastic thermal noise. Inspired by the information processing of organisms, we propose a stochastic computing model to acquire information from noisy signals. Our model is based on vector matching, in which the similarities between the input vector carrying external noisy signals and the reference vectors prepared in advance as memorized templates are evaluated in a stochastic manner. This model exhibited robustness against the noise strength and its performance was improved by addition of noise with an appropriate strength, which is similar to a phenomenon observed in stochastic resonance. Because the stochastic vector matching we propose here has robustness against noise, it is a candidate for noisy information processing that is driven by stochastically-operating devices with low energy consumption in future. Moreover, the stochastic vector matching may be applied to memory-based information processing like that of the brain.     

煤矸石地基特性及外理技术

煤矸石作为一种新型的地基材料,具有特殊的物理力学特点。通过室内力学和土工实验,研究煤矸石的矿物成分、颗粒级配、压实特性及抗剪强度与压实度的关系。通过分析煤矸石的矿物组成、物理性质、化学成分等理化特性,以及作为回填建筑地基的可行性。结果表明:煤矸石的矿物成分与粘土很相似,易压实,将煤矸石回填作为建筑用地在技术上是可行的。     

具有给定性质的（g，f）－因子

研究了具有给定性质的（ｇ，ｆ）－因子，得出了新的结果并推广了已有的结果，提出了可进一步研究的问题．     

Extremal Problems in the Class of Delta-Subharmonic Functions of Finite Order in a Half-Plane

We obtain exact lower bounds of the upper limits of ratios of the Nevanlinna characteristics of a delta-subharmonic function in the upper half-plane.     

介质支撑空气带状传输线的特性阻抗分析

利用格林函数法并通过求解静态分布电容，对有侧壁介质支撑空气带状传输线的特性阻抗进行分析－基于中心导体厚度为零的情况。给出在实际工程中适用的设计曲线，及给出中心导体厚度不为零时，传输线特性阻抗的修正值函数。