Results 141 to 150 of about 513,856 (416)

A multi-scale study of a class of hybrid predator-prey models [PDF]

arXiv, 2014
We address the question of an averaging principle for a general class of multi-scale hybrid predator-prey models. We consider prey-predator models where the kinetic of the prey population, described by a differential equation, is faster than the kinetic of the predator population, described by a jump process, the two dynamics being fully coupled.
arxiv  

Accurate and Efficient Behavioral Modeling of GaN HEMTs Using An Optimized Light Gradient Boosting Machine

Advanced Theory and Simulations, EarlyView.
Machine Learning (ML) and optimization have permeated almost every aspect of engineering applications. Recent years have seen great traction toward ML‐based GaN HEMT modelling. However, ML‐based GaN HEMT models are mostly developed using variants of Artificial Neural Network (ANN).
Saddam Husain, Mohammad Hashmi, Fadhel M. Ghannouchi   +2 more
wiley   +1 more source

Prey Acceptability and Preference of Oenopia conglobata (Coleoptera: Coccinellidae), a Candidate for Biological Control in Urban Green Areas

Insects, 2018
Oenopia conglobata is one of the most common ladybird species in urban green areas of the Mediterranean region. We have obtained data about its prey acceptability and prey preferences.
Belén Lumbierres, Filipe Madeira, Xavier Pons   +2 more
doaj   +1 more source

Consequences of Culling in Deterministic ODE Predator-Prey Models [PDF]

arXiv, 2016
We show, within the context of the standard class of deterministic ODE predator-prey mathematical models, that predator culling does not produce a long term decrease in the predator population.
arxiv  

FMint: Bridging Human Designed and Data Pretrained Models for Differential Equation Foundation Model for Dynamical Simulation

Advanced Theory and Simulations, EarlyView.
FMint is introduced as a multi‐modal foundation model that integrates human‐designed solvers and data‐driven methods for fast, accurate simulation of dynamical systems. FMint leverages in‐context learning within a transformer‐based framework to refine coarse numerical solutions.
Zezheng Song, Jiaxin Yuan, Haizhao Yang
wiley   +1 more source

New insight into avian malaria vectors in New Zealand

Parasites & Vectors
Background Mosquitoes (Culicidae) are vectors for most malaria parasites of the Plasmodium species and are required for Plasmodium spp. to complete their life cycle.
E. R. Schoener, D. M. Tompkins, L. Howe, I. C. Castro   +3 more
doaj   +1 more source

Ocorrência de Ungla Navás (Neuroptera, Chrysopidae) no Brasil e descrição de nova espécie Occurrence of Ungla Navas (Neuroptera, Chrysopidae) in Brazil and description of a new species

Revista Brasileira de Entomologia, 2007
Pela primeira vez é registrada a ocorrência do gênero Neotropical Ungla Navás, 1914 em ecossistema brasileiro. Uma nova espécie é descrita para Sete Lagoas, Minas gerais, Brasil.
Sérgio de Freitas
doaj   +1 more source

Predator-prey models with competition, Part II: uniform regularity estimates [PDF]

arXiv, 2019
We study a system of elliptic equations with strong competition and an arbitrary large number of components. The system is related to a model of predators and prey, with a single and where several predators compete with each other. In this paper we derive regularity estimates of the solutions that are independent of the number of components (i.e ...
arxiv  

Effects of rapid prey evolution on predator-prey cycles

, 2006
We study the qualitative properties of population cycles in a predator-prey system where genetic variability allows contemporary rapid evolution of the prey. Previous numerical studies have found that prey evolution in response to changing predation risk
A.P. Hendry, B.J.M. Bohannan, B.J.M. Bohannan, C. Zimmer, D. Toth, D.D. Heath, D.I. Andersson, D.N. Reznick, D.O. Conover, D.V. Vayenis, D.W. Coltman, E.L. Preisser, E.M. Olsen, G.F. Fussmann, G.F. Fussmann, G.J. Butler, H. Xia, H.L. Smith, I. Saccheri, J. Antonovics, J. Arino, J. Bergelson, J. Guckenheimer, J. Meyer, J.D. Pickett-Heaps, J.N. Thompson, K.W. Shertzer, L. Becks, L.E. Jones, Laura E. Jones, M. Barry, M. Kretzschmar, M.V. Ashley, N.G. Hairston, N.G. Hairston, P. Abrams, P. Abrams, P.R. Grant, R.M. May, S. Gagneux, S. Palumbi, S. Ruan, S.R. Searle, S.Y. Strauss, Stephen P. Ellner, T. Yoshida, T. Yoshida, W.H. Press, Y.A. Kuznetsov   +48 more
core   +1 more source

A Study of the Changes in an Aquatic Insect. Population, using Minnows as Predators [PDF]

, 1944
Edward J. Popham
openalex   +1 more source