Results 31 to 40 of about 2,493,667 (243)

CHOICES FOR GLOBAL SOCIAL STABILITY [PDF]

open access: yesIFAC Proceedings Volumes, 2008
Abstract Scientists and societal leaders increasingly agree that human activity is irretrievably changing the environment in which human life and other life forms co-exist. Action to reduce human impact on the environment is an imperative prerequisite to achieving social stability.
Kile, Frederick, Dimirovski, Georgi M.
openaire   +1 more source

Dynamical analysis of fractional-order Holling type-II food chain model

open access: yesMathematical Biosciences and Engineering, 2021
This paper proposed a fractional-order Holling type-II food chain model. First, we verified the existence, uniqueness, nonnegativity and boundedness of the solution of the model, and some conditions for equilibrium existence and local stability were ...
Cuimin Liu, Zhen Wang, Bo Meng
doaj   +1 more source

Lagrange stability of semilinear differential-algebraic equations and application to nonlinear electrical circuits [PDF]

open access: yes, 2018
We study a semilinear differential-algebraic equation (DAE) with the focus on the Lagrange stability (instability). The conditions for the existence and uniqueness of global solutions (a solution exists on an infinite interval) of the Cauchy problem, as ...
Filipkovska, Maria
core   +1 more source

How to safeguard soil health against silver nanoparticles through a microbial functional gene-based approach?

open access: yesEnvironment International
Silver nanoparticles (AgNPs), a major anthropogenic stressor, can threaten soil health by disrupting vital microbial processes critical to maintaining key soil functions such as nutrient cycling, organic matter decomposition, and soil structure formation.
Sandhya Mishra, Xiaodong Yang
doaj   +1 more source

Global Stabilization of Triangulated Formations [PDF]

open access: yesSIAM Journal on Control and Optimization, 2017
Formation control deals with the design of decentralized control laws that stabilize mobile, autonomous agents at prescribed distances from each other. We call any configuration of the agents a target configuration if it satisfies the inter-agent distance conditions. It is well known that when the distance conditions are defined by a rigid graph, there
Chen, Xudong   +2 more
openaire   +2 more sources

Drivers of toxic element accumulation in terrestrial ecosystems across elevational gradients

open access: yesEcological Indicators
Terrestrial ecosystems, account for approximately 31% of the global land area and play a significant role in the biogeochemical cycling of toxic elements.
Baba Imoro Musah, Jie Yang, Guorui Xu
doaj   +1 more source

Global stability of the positive equilibrium for a non-cooperative model of nuclear reactors

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2012
In this paper, we investigate the non-cooperative reaction-diffusion model of nuclear reactors subject to the homogeneous Neumann boundary condition. By establishing appropriate Lyapunov functions, we prove the global stability of the unique positive ...
Qunyi Bie
doaj   +1 more source

Global stability in job systems

open access: yesJournal of Mathematical Analysis and Applications, 1988
A simple job system with n grades is introduced here and it is described by a system \(\dot x_ i=x_ i\sum^{n}_{j=1}a_{ij}x_ j\), \(i=1,2,...,n\). The per capita growth rate coefficients \(a_{ij}\) are such that \(a_{ii}0\), \(i\neq j\). Under these conditions a complete picture of the phase portrait of the system is presented as follows: Let \(A=(a_{ij}
Karakostas, G., Gyori, I.
openaire   +2 more sources

Stability as a natural selection mechanism on interacting networks [PDF]

open access: yes, 2010
Biological networks of interacting agents exhibit similar topological properties for a wide range of scales, from cellular to ecological levels, suggesting the existence of a common evolutionary origin.
Francisco A. Tamarit   +4 more
core   +3 more sources

Kin recognition in plants-an ecological perspective: an overview of plant kin recognition under different resources, consequences and future challenges

open access: yesJournal of Plant Interactions
Kin recognition in plants is a debated topic, with mixed evidence on whether plants can distinguish kin from non-kin and adjust their behavior accordingly.
Jan Sher   +4 more
doaj   +1 more source

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