A Relational Model of Workplace Victimization: Social Roles and Patterns of Victimization in Dyadic Relationships.

This article proposes a model of the ways in which dyadic interactions between employees who occupy 1 of 4 archetypal social roles in organizations can lead to either episodic or institutionalized patterns of victimization. The model shows how the occurrence of victimization involving these 4 role types is influenced by organizational variables such as power differences, culture, and access to social capital. The model integrates behavioral and social structural antecedents of victimization to develop a relational perspective on the dynamics of harmful behavior in the workplace. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Dyadic perfectionism as a predictor of relationship continuity and distress among college students.

This study examined the nature and impact of dyadic perfectionism over a 3-month interval within a sample of 116 college students who were currently involved in an intimate heterosexual relationship. Dyadic perfectionism scores were stable and correlated as expected with scores on concurrent measures of adult attachment orientations and relationship satisfaction. Logistic regression analyses revealed that, controlling for initial commitment status and adult attachment orientations, Time 1 dyadic perfectionism scores significantly and uniquely predicted relationship continuity 3 months later. Lastly, controlling for social desirability, relationship commitment status, and Time 1 adult attachment orientation scores, Time 1 dyadic perfectionism scores also uniquely predicted Time 2 relationship distress. Findings provide additional evidence that dyadic perfectionism is a risk factor for relationship dysfunction. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

基于二进小波变换阈值去噪方法的性能分析

在D.L.Donoho和I.M.Johnstone提出的小波阈值去噪方法的基础上,提出基于二进小波变换的阈值去噪方法。为分析此方法的去噪性能,对同一图像在叠加不同水平的Gaussian噪声的情况进行了去噪实验,仿真实验结果发现,基于二进小波变换的阈值去噪方法不但有效抑制了图像边缘附近的Gibbs现象,而且使去噪后图像的峰值信噪比在不同噪声水平下都有很大程度地改善,在不同噪声水平间有很小幅度的波动,这表明基于二进小波变换的阈值去噪方法的去噪性能具有很强的稳定性。     

Recursive algorithm and accurate computation of dyadic Green’s functions for stratified uniaxial anisotropic media

A recursive algorithm is adopted for the computation of dyadic Green＇s functions in three-dimensional stratified uniaxial anisotropic media with arbitrary number of layers. Three linear equation groups for computing the coefficients of the Sommerfeld integrals are obtained according to the continuity condition of electric and magnetic fields across the interface between different layers, which are in correspondence with the TM wave produced by a vertical unit electric dipole and the TE or TM wave produced by a horizontal unit electric dipole, respectively. All the linear equation groups can be solved via the recursive algorithm. The dyadic Green＇s functions with source point and field point being in any layer can be conveniently obtained by merely changing the position of the elements within the source term of the linear equation groups. The problem of singularities occurring in the Sommerfeld integrals is efficiently solved by deforming the integration path in the complex plane. The expression of the dyadic Green＇s functions provided by this paper is terse in form and is easy to be programmed, and it does not overflow. Theoretical analysis and numerical examples show the accuracy and effectivity of the algorithm.     

嵌入式Web Server技术在工业控制领域的应用

嵌入式Web Server(Embedded Web Server,EWS)技术是网络技术、Web技术和嵌入式技术相结合的产物。EWS系统与传统的Web应用系统相比,大大简化了系统的结构,并将信息采集和信息发布都集成到现场的测控设备中。EWS系统通过Web和嵌入式技术使接入Internet的各种设备或其它类型的子网具有远程监控、诊断和管理的功能。因此,嵌入式Web Server技术得以推广,并广泛应用于工业控制领域。     

Construction and properties of spline dyadic wavelet filters

This paper focuses on the construction and properties of spline dyadic wavelet that equals its reconstruction wavelet. A general construction method of finite spline dyadic low-pass and high-pass filters is given. It proves that finite spline dyadic low-pass filters are symmetric about 0 or 1/2, but there are no finite spline high-pass filters possessing symmetry with respect to 0 or 1/2. It further shows that there exist infinite spline high-pass filters possessing symmetry with respect to 0 or 1/2, which can be constructed. Their energy is concentrated and so finite symmetric spline dyadic wavelet filter that equals its reconstruction filter can be obtained approximately. Construction examples for quadratic and cubic spline dyadic wavelet filters are given.     

二进小波与扩散滤波结合的光学相干层析图像降噪

斑点抑制各向异性扩散(SRAD)是一种重要的图像降噪方法。将二进小波与SRAD结合,提出一种光学相干层析图像的二进小波扩散滤波降噪方法。该方法利用二进小波分解得到的不同尺度间小波系数的相关性区分边缘和噪声,修改SRAD中扩散系数得到新的扩散系数计算公式。实验表明,新方法具有更好的降噪能力,降噪后得到的图像的信噪比和对比度噪声比率等量化衡量指标都优于经典SRAD方法。     

Operations on logic functions and variables through sign Haar spectra

A non-linear transform, called “sign Haar transform” has recently been introduced. The transform is unique and converts binary/ternary vectors into ternary spectral domain. Recursive definitions for the calculation of sign Haar transform are developed. Essential properties of logic functions and variables in the spectral domain of a quantized transform based on Haar functions are presented. Sign Haar transform has the smallest computational cost of all the quantized transforms. The properties of logic functions are listed for two different codings of incompletely specified functions.     

基于小波理论的噪声信号分析

小波分析是使信号具有时－频局部特性的信号处理方法。利用小波变换在各尺度的模极大值，能够确定波形的奇异点和在奇异点处的ｌｉｐｓｃｈｉｔｚ指数α。     

对几个小波基本概念的理解

讨论实际应用中经常涉及但容易产生误解的小波基本概念,以期提高电力系统小波应用研究水平。这些小波基本概念是:容许性条件;二进离散与二进小波;连续小波的离散条件;小波基;A=B=1的紧框架与正交小波;小波滤波器长度与时域分辨率;小波的滤波特性与不同尺度小波的频带交叠;线性相位小波与信号完全重构;双正交小波的小波包及小波包分解与1/2频程分解;整数倍伸缩小波变换与分数倍伸缩小波变换;小波的正则度与消失矩;Motlet函数与Morlet小波;小波变换模极大值(定义、与突变点位置的关系、与Lipschitz指数的关系、对小波的要求);时域、频域同时紧支小波;(时域)紧支正交线性相位小波;表征小波特性的基本指标与有价值的新小波。