نتایج جستجو برای: principal filter

تعداد نتایج: 245594  

2018
Hyoyoung Jung Jaewook Kang Tae Seok Lee Suil Kim Kiseon Kim

We consider a land mobile satellite communication system using spread spectrum techniques where the uplink is exposed to MT jamming attacks, and the downlink is corrupted by multi-path fading channels. We proposes an anti-jamming receiver, which exploits inherent low-dimensionality of the received signal model, by formulating a robust principal component analysis (Robust PCA)-based recovery pro...

In this paper, first we study the semi maximal filters in linear $BL$-algebras and we prove that any semi maximal filter is a primary filter. Then, we investigate the radical of semi maximal filters in $BL$-algebras. Moreover, we determine the relationship between this filters and other types of filters in $BL$-algebras and G"{o} del algebra. Specially, we prove that in a G"{o}del algebra, any ...

Journal: :international journal of electrical and electronics engineering 0
payman moallemi majid behnampourii

periodic noises are unwished and spurious signals that create repetitive pattern on images and decreased the visual quality. firstly, this paper investigates various methods for reducing the effects of the periodic noise in digital images. then an adaptive optimum notch filter is proposed. in the proposed method, the regions of noise frequencies are determined by analyzing the spectral of noisy...

1996
Alan M. McIvor

The principal frame and principal quadric form a fundamental description of a smooth surface at a point. This paper is concerned with estimating these from the 3D data acquired by a sensor such as a structured light system. Eight diierent estimation methods are described and a comparison of their performance is presented.

Journal: :Neural networks : the official journal of the International Neural Network Society 2005
Hui Kong Lei Wang Eam Khwang Teoh Xuchun Li Jian-Gang Wang Ronda Venkateswarlu

In the tasks of image representation, recognition and retrieval, a 2D image is usually transformed into a 1D long vector and modelled as a point in a high-dimensional vector space. This vector-space model brings up much convenience and many advantages. However, it also leads to some problems such as the Curse of Dimensionality dilemma and Small Sample Size problem, and thus produces us a series...

2010
Yi Jiang Mike W. Peng

This paper explores principal-principal conflicts in corporate governance during times of economic crisis. We address the question: What external and internal governance mechanisms can best protect minority shareholders? Drawing on 877 publicly listed large corporations with concentrated ownership in seven Asian countries and regions, we compare different control structures between family firms...

In this article, the effect of cells' radius on the behavior of wavelength switching optical filter andthe effect of the radius of the optical filters' key characteristics such as wavelength resonance onan optical filter based on photonic crystals, have been investigated. Currently, the most commonapplied mechanism for designing optical filter based on photonic crystals is using twomechanisms s...

Journal: :Optics express 2009
Tsung-Han Tsai Chao Zhou Desmond C Adler James G Fujimoto

We demonstrate a frequency comb (FC) swept laser and a frequency comb Fourier domain mode locked (FC-FDML) laser for applications in optical coherence tomography (OCT). The fiber-based FC swept lasers operate at a sweep rate of 1kHz and 120kHz, respectively over a 135nm tuning range centered at 1310nm with average output powers of 50mW. A 25GHz free spectral range frequency comb filter in the s...

1999
Werner Almesberger

Linux ooers a rich set of traac control functions. This document gives an overview of the design of the respective k ernel code, describes its structure, and illustrates the addition of new elements by describing a new queuing discipline.

ژورنال: سلامت و محیط زیست 2011
احمدی مقدم, مهدی, تکدستان, افشین, جعفرزاده حقیقی فرد, نعمت الله, دلبازی, نسیم,

Backgrounds and Objectives: Improvement of water quality standards and inability of mono layer filters in producing such quality caused researchers attended to multi layer filters. Due to specific characteristics of anthracite and leca can improve removal of organic materials and Surface over flow rate. The aim of this research was evaluation performance of dual media filters (anthracite/leca) ...

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