Results 11 to 20 of about 343 (60)

Asymptotic stability of stochastic differential equations driven by Lévy noise [PDF]

open access: yes, 2009
Using key tools such as Ito's formula for general semimartingales, Kunita's moment estimates for Levy-type stochastic integrals, and the exponential martingale inequality, we find conditions under which the solutions to the stochastic differential ...
Burkill   +9 more
core   +2 more sources

The Dynamics of an HIV/AIDS Model with Screened Disease Carriers

open access: yesComputational and Mathematical Methods in Medicine, Volume 10, Issue 4, Page 287-305, 2009., 2009
The presence of carriers usually complicates the dynamics and prevention of a disease. They are not recognized as disease cases themselves unless they are screened and they usually spread the infection without them being aware. We argue that this has been one of the major causes of the spread of human immunodeficiency virus (HIV).
S. D. Hove-Musekwa, F. Nyabadza
wiley   +1 more source

Dengue disease, basic reproduction number and control [PDF]

open access: yes, 2011
Dengue is one of the major international public health concerns. Although progress is underway, developing a vaccine against the disease is challenging. Thus, the main approach to fight the disease is vector control.
Alan Zinober   +9 more
core   +4 more sources

Modelling Immune Response and Drug Therapy in Human Malaria Infection

open access: yesComputational and Mathematical Methods in Medicine, Volume 9, Issue 2, Page 143-163, 2008., 2008
A new intra‐host model of malaria that describes the dynamics of the blood stages of the parasite and its interaction with red blood cells and immune effectors is proposed. Local and global stability of the disease free equilibrium are investigated. Conditions for existence and uniqueness of the endemic equilibrium are derived.
C. Chiyaka, W. Garira, S. Dube
wiley   +1 more source

On the uniform exponential stability of linear skew‐product semiflows

open access: yesJournal of Function Spaces, Volume 4, Issue 2, Page 145-161, 2006., 2006
The problem of uniform exponential stability of linear skew‐product semiflows on locally compact metric space with Banach fibers, is discussed. It is established a connection between the uniform exponential stability of linear skewproduct semiflows and some admissibility‐type condition.
Ciprian Preda, Björn Birnir
wiley   +1 more source

Stability analysis of periodically switched linear systems using Floquet theory

open access: yesMathematical Problems in Engineering, Volume 2004, Issue 1, Page 1-10, 2004., 2004
Stability of a switched system that consists of a set of linear time invariant subsystems and a periodic switching rule is investigated. Based on the Floquet theory, necessary and sufficient conditions are given for exponential stability. It is shown that there exists a slow switching rule that achieves exponential stability if at least one of these ...
Cevat Gökçek
wiley   +1 more source

On a criterion of Yakubovich type for the absolute stability of nonautonomous control processes

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 2003, Issue 16, Page 1027-1041, 2003., 2003
We generalize a criterion of Yakubovich for the absolute stability of control processes with periodic coefficients to the case when the coefficients are bounded and uniformly continuous functions.
R. Fabbri, S. T. Impram, R. Johnson
wiley   +1 more source

Matrix measure and application to stability of matrices and interval dynamical systems

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 2003, Issue 2, Page 75-85, 2003., 2003
Using some properties of the matrix measure, we obtain a general condition for the stability of a convex hull of matrices that will be applied to study the stability of interval dynamical systems. Some classical results from stability theory are reproduced and extended.
Ziad Zahreddine
wiley   +1 more source

Dynamics of a class of uncertain nonlinear systems under flow‐invariance constraints

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 2003, Issue 5, Page 263-294, 2003., 2003
For a class of uncertain nonlinear systems (UNSs), the flow-invariance of a time‐dependent rectangular set (TDRS) defines individual constraints for each component of the state‐space trajectories. It is shown that the existence of the flow‐invariance property is equivalent to the existence of positive solutions for some differential inequalities with ...
Octavian Pastravanu, Mihail Voicu
wiley   +1 more source

[Retracted] On the interlacing property and the Routh‐Hurwitz criterion

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 2003, Issue 12, Page 727-737, 2003., 2003
Unlike the Nyquist criterion, root locus, and many other stability criteria, the well‐known Routh‐Hurwitz criterion is usually introduced as a mechanical algorithm and no attempt is made whatsoever to explain why or how such an algorithm works. It is widely believed that simple derivations of this important criterion are highly requested by the ...
Ziad Zahreddine
wiley   +1 more source

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