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http://dx.doi.org/10.1007/s00266-025-05217-9 | DOI Listing |
Aesthetic Plast Surg
September 2025
Jiangxi University of Chinese Medicine, Nanchang, Jiangxi, China.
J Math Biol
August 2025
Department of Mathematics and Statistics, and Department of Biology, University of Ottawa, Ottawa, ON, K1N6N5, Canada.
In order to be useful in assessing the effects of climate change on biological populations, mathematical models have to adequately represent the life cycle of the species in question, the dynamics of and interactions with its resource(s), and the effect of changing environmental conditions on their vital rates. Due to this complexity, such models are often analytically intractable. We present here a consumer-resource model that captures seasonality (summer and winter), with synchronously reproducing consumers (birth pulse), structured into non-reproductive juveniles and reproductive adults, and that remains analytically tractable.
View Article and Find Full Text PDFAcad Pediatr
March 2021
Division of General Internal Medicine and Health Services Research, David Geffen School of Medicine at UCLA (DB Ly, D Rünger, NJ Jackson, and MD Wong), Los Angeles, Calif. Electronic address:
Objective: Chaos in the home is associated with worse childhood behaviors. We hypothesize chaos in the school environment might also be associated with teen risk behaviors.
Methods: We analyzed data from the Reducing Inequities through Social and Educational change Follow-Up study, a natural experiment designed to examine the impact of high-performing schools on adolescent outcomes.
Am J Crim Justice
June 2020
Department of Sociology and Criminology & Law, University of Florida, Gainesville, FL USA.
An early examination of the impact of COVID-19 on juvenile delinquency and juvenile justice in America, this review provides initial scholarship to rapidly evolving areas of research. Our appraisals of these topics are made after nearly 2 months of national COVID-19 mitigation measures, like social distancing and limited "non-essential" movement outside the home but also as states are gradually lifting stricter directives and reopening economic sectors. We consider the impact of these pandemic-related changes on twenty-first century youths, their behaviors, and their separate justice system.
View Article and Find Full Text PDFJ Biol Dyn
December 2020
Department of Mathematics, Howard University, Washington, DC, USA.
We use juvenile-adult discrete-time infectious disease models with intrinsically generated demographic population cycles to study the effects of age structure on the persistence or extinction of disease and the basic reproduction number, [Formula: see text]. Our juvenile-adult Susceptible-Infectious-Recovered (SIR) and Infectious-Salmon Anemia-Virus (ISA[Formula: see text] models share a common disease-free system that exhibits equilibrium dynamics for the Beverton-Holt recruitment function. However, when the recruitment function is the Ricker model, a juvenile-adult disease-free system exhibits a range of dynamic behaviours from stable equilibria to deterministic period population cycles to Neimark-Sacker bifurcations and deterministic chaos.
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