نتایج جستجو برای: s filter

تعداد نتایج: 825664  

Journal: :desert 0
h. rouhani assistant professor, university of gonbad_e_ kavous, gonbad-e-kavous, iran a. malekian assistant professor, university of tehran, karaj, iran

understanding of the runoff generation processes is important in understanding the magnitude and dynamics ofgroundwater discharge. however, these processes continue to be difficult to quantify and conceptualize. in this study,two digital filter based separation modules, the recursive filtering method (rdf) and a generalization of therecursive digital filter (grdf) were1991–2002 in the hableh ro...

Journal: Desert 2012
A. Malekian H. Rouhani

Understanding of the runoff generation processes is important in understanding the magnitude and dynamics ofgroundwater discharge. However, these processes continue to be difficult to quantify and conceptualize. In this study,two digital filter based separation modules, the Recursive filtering method (RDF) and a generalization of therecursive digital filter (GRDF) were1991–2002 in the Hableh Ro...

1999
Kate TAYLOR Anthony G SMITH Stuart ROSS Martin SMITH

A CFD technique for predicting the performance of axisymmetric packed bed filters has been developed. The effect on the pressure drop of a non-uniform voidage distribution within the filter bed has been modelled. A radial voidage distribution was derived from a predictive model based on a modified Mueller equation. The pressure loss through the bed was calculated from the Ergun equation, using ...

Journal: :journal of water sciences research 2013
j bazargan h.r eskandari

filter is one of the main components of embankment dams. by a simple but effective performance, filter protects the dam against erosion and soil scouring in impervious core caused by leakage (piping) and makes it safe. interaction between filter and erodible base soil is a complex phenomenon which is dependent upon several factors, and has challenged researchers for better understanding the fil...

2003
Ying Zhou Guangjie Zeng Feihong Yu

H. S. Kwok Hong Kong University of Science and Technology Center for Display Research and Department of Electronic and Electrical Engineering Clear Water Bay, Kowloon Hong Kong Abstract. We present an optical finite impulse response (FIR) filter design method. Based on crystal birefringence, an optical FIR filter can be designed to produce arbitrary spectrum output. A mathematic model of the op...

Journal: :Appl. Soft Comput. 2003
Dan Simon

This paper uses Kalman filter theory to design a state estimator for noisy discrete time Takagi–Sugeno (T–S) fuzzy models. One local filter is designed for each local linear model using standard Kalman filter theory. Steady state solutions can be found for each of the local filters. Then a linear combination of the local filters is used to derive a global filter. The local filters are time-inva...

2013
Nadia Benabdallah Nasreddine Benahmed Fethi Tarik Bendimerad

In this work, we are interesting in the analysis and the design of an ultra wideband (UWB) band pass filter with improved upper stop band performances, using microstrip lines. The design of the UWB band pass filter is based on the use of stepped-impedance low pass filter and high pass filter; whereas the simulation of its frequency response ([S]) is done using MATPAR software and it is based on...

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