Consistent deconvolution in density estimation

Suppose we have n observations from X = Y + Z, where Z is a noise component with known distribution, and Y has an unknown density f. When the characteristic function of Z is nonzero almost everywhere, we show that it is possible to construct a density estimate f_n such that for all f, Iim_n| |=0.     

A New Class of Second Order Self-Similar Processes

Abstract

Self-similarity in discrete second-order stationary processes is defined as a fixed point of a renormalisation operator consisting of aggregation normalised by the variance, rather than by the traditional power-law factor. This broader definition reveals a new class of self-similar processes.     

Resonant Texts: Sounds of the American Public Library

ABSTRACT

Public libraries have long been associated with silence and order. Historians have argued that the architecture of library buildings has served in disciplining patrons into silent reading subjects. I argue that, in light of evolving, subjective definitions of and responses to noise, changing philosophies of librarianship and library design and the proliferation of media formats and the sounds they emit, we need to consider new ways of thinking about sound in the library, not as something to be eliminated or controlled, but as something to be orchestrated, and even designed for. In order to do so, I propose that we consider first what sounds people, buildings and media make, and then use architectural design to promote their cooperative interaction.     

Estimation of signal to noise ratio using mahalanobis distance

In this paper, we propose some alternative estimatiors to that given by C. G. Khatri and C. R. Rao (1985), for estimating Signal to Noise ratio. Using Pitman Nearness, Condition for prefering one estimator over the other is estabilished. It is shown numerically that estimators corresponding to Entropy loss function are better more oftern than those corresponding to Squared Error loss.     

SAW振荡器的相位噪声分析

声表面波振荡器是一种典型的反馈振荡器。根据Ｌｅｅｓｏｎ反馈振荡器相位噪声模型，分析了ＳＡＷ振荡器的相位噪声特点，特别是不同的ＳＡＷ反馈元件，分析结果表明不同的ＳＡＷ反馈元件通常有不同的相位噪声特点。还讨论了降低相位噪声电平，提高振荡器的谱密度的方法和途径     

保险代理人管理中的信息不对称问题——一个理论分析框架

信息不对称问题对保险代理人的管理影响巨大。利用保单类别噪音模型进行的理论分析表明，在信息不对称的情况下，为获得一个良好的均衡结果，保险公司应对保险代理人保持适当的怀疑，将保单质量与代理人的报酬给付联系起来。进入门槛抑制道德风险的作用关键在于保证一个可置信的威胁，最优均衡的达到有赖于外部力量，这就要求行业协会和监管机构的作用应进一步加强。     

微波放大器增益与噪声关系的分析方法

提出了一种在微波宽带低噪声放大器设计中，放大器增益性能与噪声性能之间关系的解析表达式，对其解析解进行了详尽的讨论，大大简化了传统的设计过程，并对微波低噪声ＨＥＭＴ器件ＪＳ８９０５－ＡＳ的性能进行了分析设计，经验证，与传统方法的结果相吻合。     

移频降噪理论在往复式冰箱压缩机噪声控制中的应用

通过模拟计算QD58型往复式冰箱压缩机的声学特性，指出压缩机噪声最大峰值与其内部气体共鸣音直接有关．运用移频降噪理论，改变压缩机内气体的声学固有频率，降低共鸣音．实测了空气介质下压缩机内腔安装隔板后的移频降噪数据．并用电一声类比法推导的压缩机内气体的声学固有频率对隔板各个几何参数的灵敏度公式，调整实际工作状态下隔板的几何参数，模拟计算了压缩机内部气体声学固有频率的变化．     

基于传播模式的大学英语教学过程解读

传播模式是传播学中用来解释人类传播过程的一般结构和形式。教学是社会实践,也是一种人类传播活动。本文根据传播学中几个较有影响的传播模式来解读大学英语教学过程的特点及教学模式的演变。作者认为,每一种传播模式都有值得借鉴的地方,并能够为我们的大学英语教学提供有益的启示。英语教学要取得理想的效果,关键是要注重教学过程的完整性,排除教学过程中的各种噪音,尤其是在充分发挥学生的反馈机制和信息过滤功能的同时仍然不能忽视教师的教学主导作用。     

MOSFET中1/f噪声的Hooge参数α_H

本文报道 P 沟道 MOSFET 器件中 1/f 噪声 Hooge 参数测量的部分实验结果.由加利福尼亚州的 SILICONIX 公司提供的实验样品是采用同样工艺作在同一块基片之上的.实验表明,在由非谐和状态到谐和状态过渡时,α_H 与沟道长度的平方成正比.类似的结果未曾见报道.