Results 21 to 30 of about 277,157 (310)

On the Use of Adaptive Resemblance Terms in Chemical Ecology

open access: yesPsyche: A Journal of Entomology, 2012
Many organisms (mimics) show adaptive resemblance to an element of their environment (model) in order to dupe another organism (operator) for their own benefit.
Christoph von Beeren   +2 more
doaj   +1 more source

Multi-input regulation and logic with T7 promoters in cells and cell-free systems. [PDF]

open access: yesPLoS ONE, 2013
Engineered gene circuits offer an opportunity to harness biological systems for biotechnological and biomedical applications. However, reliance on native host promoters for the construction of circuit elements, such as logic gates, can make the ...
Sukanya Iyer   +4 more
doaj   +1 more source

A comparative study of immune system based genetic algorithms in dynamic environments [PDF]

open access: yes, 2006
Copyright @ 2006 ACMDiversity and memory are two major mechanisms used in biology to keep the adaptability of organisms in the ever-changing environment in nature.
Yang, S
core   +3 more sources

A Note on “Wiener Index of a Fuzzy Graph and Application to Illegal Immigration Networks”

open access: yesApplied Sciences, 2021
Connectivity parameters have an important role in the study of communication networks. Wiener index is such a parameter with several applications in networking, facility location, cryptology, chemistry, and molecular biology, etc.
Hoon Lee, Xue-gang Chen, Moo Young Sohn
doaj   +1 more source

Non-linear eigenvalue problems arising from growth maximization of positive linear dynamical systems [PDF]

open access: yes, 2014
We study a growth maximization problem for a continuous time positive linear system with switches. This is motivated by a problem of mathematical biology (modeling growth-fragmentation processes and the PMCA protocol).
Calvez, Vincent   +2 more
core   +5 more sources

Operations Research Tools for Biology

open access: yes, 2023
This thesis shows how to use Operations Research tools, e.g. Markov chains, optimization, game theory, and matchings, to understand problems that appear in biological contexts. We focus on two biological systems – the activation of the immune system in response to pathogens, and the metabolism of communities of different species of microbes. In Chapter
openaire   +2 more sources

Resolvent Positive Linear Operators Exhibit the Reduction Phenomenon [PDF]

open access: yes, 2011
The spectral bound, s(a A + b V), of a combination of a resolvent positive linear operator A and an operator of multiplication V, was shown by Kato to be convex in b \in R.
Cantrell   +15 more
core   +3 more sources

Schauder a priori estimates and regularity of solutions to boundary-degenerate elliptic linear second-order partial differential equations [PDF]

open access: yes, 2013
We establish Schauder a priori estimates and regularity for solutions to a class of boundary-degenerate elliptic linear second-order partial differential equations.
Camelia Pop   +3 more
core   +2 more sources

On Regularly Varying and History-Dependent Convergence Rates of Solutions of a Volterra Equation with Infinite Memory

open access: yesAdvances in Difference Equations, 2010
We consider the rate of convergence to equilibrium of Volterra integrodifferential equations with infinite memory. We show that if the kernel of Volterra operator is regularly varying at infinity, and the initial history is regularly varying at minus ...
John A. D. Appleby
doaj   +2 more sources

Is defining life pointless? Operational definitions at the frontiers of biology [PDF]

open access: yesSynthese, 2017
Despite numerous and increasing attempts to define what life is, there is no consensus on necessary and sufficient conditions for life. Accordingly, some scholars have questioned the value of definitions of life and encouraged scientists and philosophers alike to discard the project.
Bich, Leonardo, Green, Sara
openaire   +5 more sources

Home - About - Disclaimer - Privacy