Results 81 to 90 of about 110,191 (226)
Spectral function of the Anderson impurity model at finite temperatures
, 2010 Using the functional renormalization group (FRG) and the numerical renormalization group (NRG), we calculate the spectral function of the Anderson impurity model at zero and finite temperatures.
A. C. Hewson +7 more
core +1 more source
The Canadian Journal of Chemical Engineering, Volume 103, Issue 8, Page 3751-3766, August 2025.The boundary‐regulated distributed parameter system of an axial dispersion tubular reactor with delayed recycle is showcased, along with the optimal observer‐based control strategy developed using a late‐lumping method for its stabilization. Abstract The optimal control of an axial tubular reactor with a recycle stream is addressed as a key type of ...
Behrad Moadeli +2 more
wiley +1 more source
On an explicit finite difference method for fractional diffusion equations
, 2003 A numerical method to solve the fractional diffusion equation, which could also be easily extended to many other fractional dynamics equations, is considered.
Gorenflo Rudolf +5 more
core +1 more source
Plankton Communities Behave Chaotically Under Seasonal or Stochastic Temperature Forcings
Ecology and Evolution, Volume 15, Issue 8, August 2025.Periodic forcing can drive a system into chaos when the autonomous system exhibits periodic behavior. In contrast, stochastic forcing has the potential to induce chaos regardless of the underlying dynamics of the autonomous system. ABSTRACT Chaos is observed in natural systems, especially in ecosystems with populations characterized by a short ...
Guido Occhipinti +4 more
wiley +1 more source
A mass-structured individual-based model of the chemostat: convergence and simulation [PDF]
, 2013 We propose a model of chemostat where the bacterial population is individually-based, each bacterium is explicitly represented and has a mass evolving continuously over time.
Campillo, Fabien, Fritsch, Coralie
core +3 more sources
Analytic solutions of fractional differential equations by operational methods
, 2012 We describe a general operational method that can be used in the analysis of fractional initial and boundary value problems with additional analytic conditions. As an example, we derive analytic solutions of some fractional generalisation of differential
Garra, Roberto, Polito, Federico
core +1 more source
New Approaches to Assess Food Web Stability in Aquatic Ecosystems: A Case Study on Baiyangdian Lake
Ecology and Evolution, Volume 15, Issue 8, August 2025.A method for calculating the interaction strength of a phytoplankton‐based and a detritus food web. A geometric mean ratio of predator‐to‐prey biomass BCBPt$$ {\left(\frac{B_C}{B_P}\right)}_t $$ as an alternative indicator for food web stability. The changes in the stability of the BYD Lake from the 1950s to the 2010s indicate that two steady‐state ...
Yong Zeng, Wei Yang, Yanwei Zhao
wiley +1 more source
Average Continuous Control of Piecewise Deterministic Markov Processes
, 2008 This paper deals with the long run average continuous control problem of piecewise deterministic Markov processes (PDMP's) taking values in a general Borel space and with compact action space depending on the state variable.
Costa, O. L. V., Dufour, F.
core +5 more sources
Ecology and Evolution, Volume 15, Issue 8, August 2025.Surveillance of wildlife disease is important and often involves strategic methods to identify an effective design for a program's objectives that accounts for ecological and epidemiological complexities in the system. We present an interactive teaching tool, Surveillance Analysis and Sample Size Explorer (SASSE), to allow wildlife professionals to ...
Lauren Smith +5 more
wiley +1 more source
Stability for linear second order vector integro-differential equations
Results in Applied MathematicsExplicit sufficient conditions for uniform exponential stability of two-dimensional linear vector integro-differential equations have been established.
Leonid Berezansky +1 more
doaj +1 more source