Results 11 to 20 of about 452,511 (216)

On a generalized population dynamics equation with environmental noise [PDF]

open access: yesStatistics & Probability Letters, 2021
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Rongrong Tian, Jinlong Wei, Jiang-Lun Wu
openaire   +3 more sources

Generational Spreading Speed and the Dynamics of Population Range Expansion [PDF]

open access: yesThe American Naturalist, 2015
Some of the most fundamental quantities in population ecology describe the growth and spread of populations. Population dynamics are often characterized by the annual rate of increase, λ, or the generational rate of increase, R0. Analyses involving R0 have deepened our understanding of disease dynamics and life-history complexities beyond that afforded
Bateman, Andrew W.   +3 more
openaire   +4 more sources

Generalized modeling of ecological population dynamics [PDF]

open access: yesTheoretical Ecology, 2011
Over the past years several authors have used the approach of generalized modeling to study the dynamics of food chains and food webs. Generalized models come close to the efficiency of random matrix models, while being as directly interpretable as conventional differential-equation-based models.
Yeakel, JD   +3 more
openaire   +4 more sources

Optimal Harvest Problem for Fish Population—Structural Stabilization

open access: yesMathematics, 2022
The influence of environmental conditions and fishery on a typical pelagic or semi-pelagic fish population is studied. A mathematical model of population dynamics with a size structure is constructed. The problem of the optimal harvest of a population in
Aleksandr Abakumov, Yuri Izrailsky
doaj   +1 more source

Evolutionary dynamics of general group interactions in structured populations [PDF]

open access: yesPhysical Review E, 2016
La evolución de las poblaciones está influenciada por muchos factores, y los modelos clásicos simples se han desarrollado de varias maneras importantes. Se ha demostrado que tanto la estructura de la población como las interacciones multijugador afectan significativamente la evolución de propiedades importantes, como el nivel de cooperación o el ...
Aming Li   +3 more
openaire   +4 more sources

Border Collision Bifurcations in a Generalized Model of Population Dynamics [PDF]

open access: yesDiscrete Dynamics in Nature and Society, 2016
We analyze the dynamics of a generalized discrete time population model of a two‐stage species with recruitment and capture. This generalization, which is inspired by other approaches and real data that one can find in literature, consists in considering no restriction for the value of the two key parameters appearing in the model, that is, the natural
Ladino, L.   +3 more
openaire   +4 more sources

Stackelberg Population Dynamics: A Predictive-Sensitivity Approach

open access: yesGames, 2021
Hierarchical decision-making processes traditionally modeled as bilevel optimization problems are widespread in modern engineering and social systems. In this work, we deal with a leader with a population of followers in a hierarchical order of play.
Eduardo Mojica-Nava, Fredy Ruiz
doaj   +1 more source

Public opinion regarding government response to COVID-19: case study of a large commercial city in Nigeria

open access: yesThe Pan African Medical Journal, 2021
INTRODUCTION: Government measures to contain the COVID-19 pandemic cannot be effective without widespread compliance by the public. A greater understanding of citizens´ perceptions of these measures can help government agencies adapt their strategies to ...
Ismaeel Yunusa   +5 more
doaj   +1 more source

The Dynamics of Specialization and Generalization within Biological Populations

open access: yesAdvances in Complex Systems, 1998
We develop an abstract model to explore specialization and generalization in task performance by individuals within biological populations. Individuals follow simple rules of increasing and decreasing task propensities that could, for example, be based on learning and forgetting.
Spencer, AJ, Couzin, ID, Franks, NR
openaire   +3 more sources

Dynamics of General Class of Difference Equations and Population Model with Two Age Classes

open access: yesMathematics, 2020
In this paper, we study the qualitative behavior of solutions for a general class of difference equations. The criteria of local and global stability, boundedness and periodicity character (with period 2 k ) of the solution are established ...
Osama Moaaz   +3 more
doaj   +1 more source

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