نتایج جستجو برای: iir structure

تعداد نتایج: 1569270  

Journal: :Genetics 1985
F Daud G S Ortori J A Roper

A radiation-induced translocation, T(IIR----IIIL), has been shown to be nonreciprocal and to have most of IIR, including its terminus, attached uninverted to the terminus of IIIL.--Progeny with the IIR segment in duplicate, obtained from crosses of T(IIR----IIIL) to strains with a standard genome, were unstable at mitosis; like earlier duplication strains, they suffered deletions from either du...

Journal: :Journal of Intelligent and Fuzzy Systems 2014
Lyes Saad Saoud Fayçal Rahmoune Victor Tourtchine Kamel Baddari

In this paper, the development of an improved Takagi Sugeno (TS) fuzzy model for identification and chaotic time series prediction of nonlinear dynamical systems is proposed. This model combines the advantages of fuzzy systems and Infinite Impulse Response (IIR) filters, which are autoregressive moving average models, to create internal dynamics with just the control input. The structure of Fuz...

Journal: :IEEE Trans. Signal Processing 2000
Gonzalo R. Arce José L. Paredes

A recursive weighted median (RWM) filter structure admitting negative weights is introduced. Much like the sample median is analogous to the sample mean, the proposed class of RWM filters is analogous to the class of infinite impulse response (IIR) linear filters. RWM filters provide advantages over linear IIR filters, offering near perfect “stopband” characteristics and robustness against nois...

Journal: :Molecular vision 2004
Amane Koizumi Tatjana C Jakobs Richard H Masland

PURPOSE To explore the possible existence of inward rectifying currents in the distal dendrites of amacrine cells. METHODS Patch-clamp recordings were made from amacrine cells in a new horizontal slice preparation of mouse retina. Single-cell RT-PCR studies were performed after the patch-clamp recordings. RESULTS In contrast to results from vertical slices or dissociated cells, all amacrine...

2009
Ichi TAKUMI Masayasu HATA

This paper proposes a new method of a pole controlled IIR adaptive digital filter (ADF) with a preceded FIR section, which consists of parallel connected second order IIR filters controlled by each inherent identification error. The FIR part works to identify a flat delay and responses resulting from poles near the origin of z-plane. On the other hand, the IIR part identifies poles near the uni...

2013
Ranjit Singh Chauhan Sandeep Kumar Arya S. K. Arya

This paper presents the swarm intelligence (SI)-based particle swarm optimisation (PSO) in context of designing infinite-impulse response (IIR) digital filters. IIR filters are the part of digital filters with recursive responses. Since the error surface of IIR digital filters is generally non-linear and multimodal, global optimisation techniques are required in order to avoid local minima. The...

1998
Khaled A. Mayyas Tyseer Aboulnasr

A modification to the OE IIR system structure is proposed to ensure global convergence for sufficient modeling of the unknown system. The proposed structure is effectively equivalent to whitening the input signal before being applied to the original OE setup. This guarantees the unimodality of the error surface for sufficient modeling. An adaptive update scheme for the new structure is derived ...

Journal: :IEEE Trans. Signal Processing 1991
José A. R. Fonollosa Enrique Masgrau

A simplified algorithm is presented for computing the gradient in adaptive IIR lattice filters. For a filter with N zeros and N poles, this algorithm requires only order Ncomputations and it is shown to be completely equivalent to the previously proposed formulation which has a complexity of order N Z . Manuscript received May 7, 1990; revised October 4 , 1990. This work was supported by the Sp...

2013
Mark M. Hall Spyros Katsaris Elaine Toms

Information Retrieval (IR) has benefited from standard evaluation practices and re-usable software components, that enable comparability between systems and experiments. However, Interactive IR (IIR) has had only very limited benefit from these developments, in part because experiments are still built using bespoke components and interfaces. In this paper we propose a flexible workbench for con...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علم و صنعت ایران 1378

یک تصویر به صورت معمولی و در حالتی که 3 بایت برای هر پیکسل (یک بایت برای هر کدام از عناصر رنگ r و g و b) آن استفاده می شود حجم قابل ملاحظه ای را اشغال می کند لذا برای کاهش این حجم از روشهای مختلف استفاده می شود. بهترین روشی که مورد استفاده قرار می گیرد روش jpeg است که دارای نسبت فشردگی خوبی است . در این پروژه سه روش فشرده سازی را اجرا کرده و آنها را نسبت به روش jpeg مقایسه کرده ایم. سه روش iir-...

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