过滤器反冲洗水混凝沉降特性的测定与研究

针对给水过滤器反冲洗耗水量大的问题及其回用的需要,对反冲洗水的混凝沉降特性进行了实验研究。根据实验需要设计和制作了实验装置,采用静水实验法对气浮移动罩滤池反冲洗水自然沉降和混凝沉降特性进行实际测量,获得了自然沉降和混凝沉降过程中的浊度变化值。通过图解和实验分析,掌握了过滤器反冲洗水自然沉降的特性及加药量对混凝沉降特性影响,得到了混凝沉降过程中浊度变化的基本规律和满足进滤池回用所需要的时间,为反冲洗水回用方案的确定提供了可靠的依据。     

光纤Bragg光栅全光调谐滤波器

针对非线性特性对光纤布拉格光栅禁带的影响进行了研究;对光栅在非线性作用下所呈现的Bragg波长偏移特性作了理论分析。仿真结果表明,随着输入信号功率的增大,光栅的布拉格波长向长波方向移动,反射峰值下降,反射带宽变窄。基于此原理提出了一种新的全光可调谐滤波方案,并对不同光栅参数下的输出波形和反射谱特性进行了比较。该方案通过控制光实现了对光纤布拉格光栅固有波长的调节,从而实现了全光可调谐滤波,仿真结果表明脉冲形状保持良好。     

实际应用中一种新的数字滤波方法

本文对数字滤波的几种常用方法进行了分析，结合实际应用中碰到的问题给出了一种新的解决方法，此方法较好地解决了实际应用中采集信号的干扰，并对实际应用中的各种参数做了测试，结果表明此方法有效地达到了数字滤波的目的。     

DF-FPDLMS自适应滤波器的可测性设计与测试

基于加法器的测试生成,提出了直接实现形式的细粒度流水线延迟最小均方自适应滤波器的一种可测性设计的测试方案。在测试模式下,该设计通过滤波器组成模块的分层隔离及由寄存器转化成的扫描链提高了可测性;通过复用部分寄存器和加法器避免或最小化了额外的测试硬件开销。该方法能在真速下高效地侦测到滤波器基本组成单元内的任意固定型组合失效,且不会降低电路的原有性能。     

论立案功能之平衡

刑事诉讼的启动程序具有两大基本功能:输入功能和过滤功能。在我国,立案的输入功能存在不足,而基于人权保障的理由,立案的过滤功能却得到过分强调。立法和司法实践存在的脱节使这一程序的改革成为必然,对其功能的定位也必须重新认识,要淡化其案件过滤功能和由此产生的人权保障功能。     

新的正交系列滤波器莫阿条纹公式和光栅方程

本文研究了光学中新的正交系列空间滤波器的莫阿条纹公式和傅里叶频谱规律公式及其产生的基本原理和光栅（谱）方程。     

Estimating the underlying change in unemployment in the UK

By setting up a suitable time series model in state space form, the latest estimate of the underlying current change in a series may be computed by the Kalman filter. This may be done even if the observations are only available in a time-aggregated form subject to survey sampling error. A related series, possibly observed more frequently, may be used to improve the estimate of change further. The paper applies these techniques to the important problem of estimating the underlying monthly change in unemployment in the UK measured according to the definition of the International Labour Organisation by the Labour Force Survey. The fitted models suggest a reduction in root-mean-squared error of around 10% over a simple estimate based on differences if a univariate model is used and a further reduction of 50% if information on claimant counts is taken into account. With seasonally unadjusted data, the bivariate model offers a gain of roughly 40% over the use of annual differences. For both adjusted and unadjusted data, there is a further gain of around 10% if the next month's figure on claimant counts is used. The method preferred is based on a bivariate model with unadjusted data. If the next month's claimant count is known, the root-mean-squared error for the estimate of change is just over 10000.     

Nonparametric smoothing using state space techniques

The authors examine the equivalence between penalized least squares and state space smoothing using random vectors with infinite variance. They show that despite infinite variance, many time series techniques for estimation, significance testing, and diagnostics can be used. The Kalman filter can be used to fit penalized least squares models, computing the smoothed quantities and related values. Infinite variance is equivalent to differencing to stationarity, and to adding explanatory variables. The authors examine constructs called “smoothations” which they show to be fundamental in smoothing. Applications illustrate concepts and methods.     

FIR线性数字滤波器在数字电视中的应用

FIR滤波器具有严格的线性相位和任意的幅度特性 ,能满足数字电视对信号的实时处理和高保真度的要求 ,目前已有计算机程序可资利用 ,使得FIR滤波器的设计大大简化 ,因而使线性相位FIR滤波器在数字电视的亮、色信号分离电路中得到了广泛的应用。     

基于细胞逻辑、形态特征图像分割新算法

在MATLAB软件中结合细胞逻辑形态特征提出了一种图像分割和计数的新算法这种算法的主要思想是通过逻辑运算拉氏变换和数学形态学运算的处理首先提取细胞图像中的逻辑信息再根据细胞特有的圆形椭圆形形态特征将细胞从整个背景中进行分割处理并根据逻辑信息形态特征实现了血细胞图像的简单计数实现了特定血细胞的单独分割其算法简单可靠