Results 61 to 70 of about 938 (156)
Stochastic models of the growth dynamics of some dendritic cells
Different models of tumor growth are considered. Some mathematical methods are developed to analyze the dynamics of mutations enabling cells in cancer patients to metas-tize. The mathematical models consist of some stochastic dynamical systems describing
Khairia El-Said El-Nadi Khairia
semanticscholar +1 more source
Global periodic solutions in a plankton-fish interaction model with toxication delay
In this paper, a plankton-fish interaction model is proposed and analyzed with the help of delay differential equations. Firstly, the elementary dynamical properties of the system in the absence of time delay is discussed.
Sharma Amit
doaj +1 more source
Models of kleptoparasitism on networks: the effect of population structure on food stealing behaviour [PDF]
The behaviour of populations consisting of animals that interact with each other for their survival and reproduction is usually investigated assuming homogeneity amongst the animals. However, real populations are non-homogeneous.
Broom, M+2 more
core +3 more sources
In this study, we present a variational multiscale stabilized finite element method for steady-state incompressible fluid flow under magnetic forces. In particular, an algebraic approach of approximating the subscales has been considered, and then, the ...
Sahoo Dipak Kumar+2 more
doaj +1 more source
Cell-to-cell communication processes in the bacterial world can be considered as a collective bacterial behavior, which is coordinated by chemical signaling molecules (autoinducers, quorum sensing molecules, or pheromones).
Sarangam Majumdar+2 more
doaj +1 more source
Comparison of Perron and Floquet eigenvalues in age structured cell division cycle models [PDF]
We study the growth rate of a cell population that follows an age-structured PDE with time-periodic coefficients. Our motivation comes from the comparison between experimental tumor growth curves in mice endowed with intact or disrupted circadian clocks,
Arino+12 more
core +6 more sources
Approximation operators based on preconcepts
Using the notion of preconcept, we generalize Pawlak’s approximation operators from a one-dimensional space to a two-dimensional space in a formal context.
Wang Gang, Mao Hua
doaj +1 more source
STOCHASTIC DYNAMICS OF CELL LINEAGE IN TISSUE HOMEOSTASIS. [PDF]
During epithelium tissue maintenance, lineages of cells differentiate and proliferate in a coordinated way to provide the desirable size and spatial organization of different types of cells.
Chen, Weitao, Nie, Qing, Qiu, Yuchi
core +2 more sources
An Optimal Control Analysis of Dengue Fever
Dengue fever is one of the most infectious diseases in the world, according to data issued by the World Health Organization in 2014. It is responsible for a huge number of deaths each year around the world, particularly in tropical nations.
Nur Ilmayasinta+3 more
doaj +1 more source
On some Free Boundary Problems of the Prey-predator Model [PDF]
In this paper we investigate some free boundary problems for the Lotka-Volterra type prey-predator model in one space dimension. The main objective is to understand the asymptotic behavior of the two species (prey and predator) spreading via a free ...
Wang, Mingxin
core +1 more source