Chaos in a predator-prey system with impulsive perturbations and stage structure for the predator.
Chaos in ecology: The topological entropy of a tritrophic food chain model.
Characteristic equations for the spectrum of generators
Characterization of lung tumor subtypes through gene expression cluster validity assessment
The problem of assessing the reliability of clusters patients identified by clustering algorithms is crucial to estimate the significance of subclasses of diseases detectable at bio-molecular level, and more in general to support bio-medical discovery of patterns in gene expression data. In this paper we present an experimental analysis of the reliability of clusters discovered in lung tumor patients using DNA microarray data. In particular we investigate if subclasses of lung adenocarcinoma...
Chemotaxis models with a threshold cell density
We consider a quasilinear parabolic system which has the structure of Patlak-Keller-Segel model of chemotaxis and contains a class of models with degenerate diffusion. A cell population is described in terms of volume fraction or density. In the latter case, it is assumed that there is a threshold value which the density of cells cannot exceed. Existence and uniqueness of solutions to the corresponding initial-boundary value problem and existence of space inhomogeneous stationary solutions are discussed....
Chemotherapeutic effects on hematopoiesis: A mathematical model.
Classification and evolutionary trends of icosahedral viral capsids.
Classification des solutions d’un problème elliptique fortement non linéaire
On étudie la classification des solutions du problème elliptiqueoù et une fonction changeant de signe. En utilisant une méthode de tire, On montre qu’en partant avec une dérivée initiale nulle toutes les solutions sont globales. De plus si et l’ensemble des solutions est constitué d’une seule solution à support compact et de deux familles de solutions ; celles qui sont strictement positives et celles qui changent de signes. On montre aussi que ces deux familles tendent vers l’infini quand...
Classification of cancer recurrence with alpha-beta BAM.
Clustered solutions around harmonic centers to a coupled elliptic system
Coalescent processes in subdivided populations subject to recurrent mass extinctions.
Codings and operators in two genetic algorithms for the leaf-constrained minimum spanning tree problem
The features of an evolutionary algorithm that most determine its performance are the coding by which its chromosomes represent candidate solutions to its target problem and the operators that act on that coding. Also, when a problem involves constraints, a coding that represents only valid solutions and operators that preserve that validity represent a smaller search space and result in a more effective search. Two genetic algorithms for the leaf-constrained minimum spanning tree problem illustrate...
Coexistence for a resource-based growth model with two resources.
Coexistence of small and large amplitude limit cycles of polynomial differential systems of degree four
A class of degree four differential systems that have an invariant conic , , is examined. We show the coexistence of small amplitude limit cycles, large amplitude limit cycles, and invariant algebraic curves under perturbations of the coefficients of the systems.
Cognition: Differential-geometrical view on neural networks.
Colimits in free categories
Collision patterns on mollusc shells.
Commande optimale hiérarchisée d'une population de chaînes de Markov
Compact attractors for time-periodic age-structured population models.
Comparing the suitability of two factors for stratification in estimating diversity