Results 41 to 50 of about 2,493,667 (243)

Smoothness dependent stability in corrosion detection

open access: yes, 2014
We consider the stability issue for the determination of a linear corrosion in a conductor by a single electrostatic measurement. We established a global log-log type stability when the corroded boundary is simply Lipschitz. We also improve such a result
Sincich, Eva
core   +1 more source

Mathematical Model to Study the Effect of Refuge on Cannibalism in Atractosteus tropicus

open access: yesMathematics
Cannibalism is a behavior that different species of fish exhibit in the early stages of their life, and it has been widely reported. In Tabasco, Mexico, the ancestral species Atractosteus tropicus is farmed, which is a freshwater fish with a high ...
César Antonio Sepúlveda-Quiroz   +5 more
doaj   +1 more source

Open Problems and Conjectures in the Evolutionary Periodic Ricker Competition Model

open access: yesAxioms
In this paper, we present a survey about the latest results in global stability concerning the discrete-time evolutionary Ricker competition model with n species, in both, autonomous and periodic models.
Rafael Luís
doaj   +1 more source

Modeling Citrus Huanglongbing transmission within an orchard and its optimal control

open access: yesMathematical Biosciences and Engineering, 2020
Citrus Huanglongbing (HLB) is the most devastating citrus disease worldwide. In this paper, a deterministic dynamical model is proposed to explore the transmission dynamics of HLB between citrus tree and Asian citrus psyllid (ACP).
Fumin Zhang   +4 more
doaj   +1 more source

Improving Global Financial Stability [PDF]

open access: yes, 2000
This report concludes that the failure of developing country governments and international financial institutions to adapt to changing markets helped trigger some of the world's financial crises. Arguing that global finance is "more susceptible to crisis

core  

Global dynamics and spatiotemporal heterogeneity of a preytaxis model with prey-induced acceleration

open access: yesEuropean Journal of Applied Mathematics
Conventional preytaxis systems assume that prey-tactic velocity is proportional to the prey density gradient. However, many experiments exploring the predator–prey interactions show that it is the predator’s acceleration instead of velocity that is ...
Chunlai Mu, Weirun Tao, Zhi-An Wang
doaj   +1 more source

Improving Global Financial Stability - Executive Summary [PDF]

open access: yes, 2000
Executive summary of "Improving Global Financial Stability" report.

core  

Effects of soil fertility and toxicity on the performance of Chenopodium quinoa (Willd) plants in kin and non-kin interactions

open access: yesPlant Signaling & Behavior
Kin selection theory predicts that closely related organisms may exhibit cooperative behaviors that enhance group fitness despite individual costs. In contrast, the resource partitioning hypothesis posits stronger competition among close relatives due to
Jan Sher, Yun-Bing Zhang, Jiao-Lin Zhang
doaj   +1 more source

Feedback control effect on the Lotka-Volterra prey-predator system with discrete delays

open access: yesAdvances in Difference Equations, 2017
In this paper, we study a Lotka-Volterra prey-predator system with feedback control. We establish sufficient conditions under which a unique positive equilibrium is globally stable.
Chunling Shi, Xiaoying Chen, Yiqin Wang
doaj   +1 more source

A Mathematical Study of a Generalized SEIR Model of COVID-19

open access: yesSciMedicine Journal, 2020
In this work (Part I), we reinvestigate the study of the stability of the Covid-19 mathematical model constructed by Shah et al. (2020) [1]. In their paper, the transmission of the virus under different control strategies is modeled thanks to a ...
Abdelkader Intissar
doaj   +1 more source

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