نتایج جستجو برای: stability matrix

تعداد نتایج: 650694  

At the first step CuFe2O4 nanoparticles were synthesized by a fast and facile microwave method. The obtained nanoparticles and modified carbon nano tubes were added to poly styrene matrix. The products were characterized through Fourier transform infrared spectroscopy, X-ray diffraction, and scanning electron microscopy. Vibrating sample magnetometer shows nanoparticles exhibit ferromagnetic be...

2006
Nicholas J. Higham

By use of a simple identity, the product of two complex matrices can be formed with three real matrix multiplications and five real matrix additions, instead of the four real matrix multiplications and two real matrix additions required by the conventional approach. This alternative method reduces the number of arithmetic operations, even for small dimensions, achieving a saving of up to 25 per...

Journal: :Graphical Models 2006
Robert Laganière Hassan Hajjdiab Amar Mitiche

The purpose of this study is to investigate a geometric/level set method to locate ground plane objects in a robot environment and reconstruct their structure from a collection of sparse views. In a first step, a model of the ground plane surface, on which the robot is operating, is obtained through the matching of the available views. This wide-baseline matching of the ground plane views allow...

2011
Huanbin Liu Cheng Wang

This paper is concerned with the robust stability for uncertain systems with time-varying delay and nonlinear perturbations. Using Lyapunov stability theory and free weighting matrix techniques, delaydependent stability criterion is derived in terms of linear matrix inequality without applying any bounding techniques. Finally, numerical example is given to illustrate the improvement over some e...

2007
Didier Henrion

New relationships are enlightened between various quadratic matrix inequality conditions for stability of a scalar polynomial. It is namely shown how a recently published linear matrix inequality condition can be derived from Hermite and Lya-punov stability criteria.

Journal: :Computers & Mathematics with Applications 2007
Maurice Hasson James M. Hyman Juan M. Restrepo

For a self-adjoint linear operator with discrete spectrum or a Hermitian matrix the “extreme” eigenvalues define the boundaries of clusters in the spectrum of real eigenvalues. The outer extreme ones are the largest and the smallest eigenvalues. If there are extended intervals in the spectrum in which no eigenvalues are present, the eigenvalues bounding these gaps are the inner extreme eigenval...

Journal: :J. Computational Applied Mathematics 2014
D. Christou Nicos Karcanias Marilena Mitrouli

The Extended-Row-Equivalence and Shifting (ERES) method is a matrixbased method developed for the computation of the greatest common divisor (GCD) of sets of many polynomials. In this paper we present the formulation of the shifting operation as a matrix product which allows us to study the fundamental theoretical and numerical properties of the ERES method by introducing its complete algebraic...

Journal: :iranian journal of radiation research 0
h. foroutan radioisotope department, nuclear science research school, nuclear science and technology institute, atomic energy organization of iran, tehran, iran r. najafi radioisotope department, nuclear science research school, nuclear science and technology institute, atomic energy organization of iran, tehran, iran m.h. babaei radioisotope department, nuclear science research school, nuclear science and technology institute, atomic energy organization of iran, tehran, iran m. shafii radioisotope department, nuclear science research school, nuclear science and technology institute, atomic energy organization of iran, tehran, iran

background: immunoradiometric assay is one of the most common and precise methods for determination of prostate specific antigen (psa) in clinical laboratories. usual use of human serum in routine assays has many disadvantages such as easy contamination and precipitation, instability and unavailability. thus in order to avoid these problems the artificial matrix was used which acts similar to h...

2009
Jin-Liang Shao Ting-Zhu Huang

⎯The problem of the global exponential stability of a class of Hopfield neural networks is considered. Based on nonnegative matrix theory, a sufficient condition for the existence, uniqueness and global exponential stability of the equilibrium point is presented. And the upper bound for the degree of exponential stability is given. Moreover, a simulation is given to show the effectiveness of th...

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