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We provide the link between population dynamics and the dynamics of Darwinian evolution via studying the joint population dynamics of similar populations. Similarity implies that the relative dynamics of the populations is slow compared to, and decoupled from, their aggregated dynamics. The relative dynamics is simple, and captured by a Taylor expansion in the difference between the populations. The emerging evolution is directional, except at the singular points of the evolutionary state space. Here "evolutionary branching" may occur. The diversification of life forms thus is demonstrated to be a natural consequence of the Darwinian process.
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http://dx.doi.org/10.1103/PhysRevLett.95.078105 | DOI Listing |
J Cannabis Res
September 2025
Department of EconomicsMA in Applied Economics, Lebanese American University, P.O. Box: 13-5053, Beirut, Lebanon.
Amidst the global shift toward cannabis legalization, this study examines medical cannabis (MC) sales as an indicator of economic activity and innovation. It explores associations between MC sales, and variables including tobacco use, alcohol consumption, amphetamine, cocaine and cannabis prevalence, and gross domestic product (GDP), using a fixed effects (FE) panel regression model. It also evaluates associations between cannabis legalization and MC sales over time using a dynamic Difference-in-Differences (DiD) approach with multiple time periods.
View Article and Find Full Text PDFIn this paper, we will present an analysis of three terms central to contemporary cultural critique: age, gender and migration, bringing them together in an approach we call "triangulation". We draw on Katy Gardner's ethnographic study of Bangladeshi migrants to London, Age, Narrative and Migration (2002), which addresses the three terms, to examine the interrelated identity constructions that are at stake in triangulation. In a second step, we analyze Monica Ali's novel Brick Lane (2003) as a pertinent literary example, in which aspects of age, gender, and migration come together in ways that may further illuminate and develop these as terms of cultural critique.
View Article and Find Full Text PDFAnnu Rev Entomol
September 2025
2Department of Animal Physiology, Zoological Institute and Museum, University of Greifswald, Greifswald, Germany.
The evolutionary success of insects may be partly attributed to their profound ability to adjust metabolism in response to environmental stress or resource variability at a range of timescales. Metabolic flexibility encompasses the ability of an organism to adapt or respond to conditional changes in metabolic demand and tune fuel oxidation to match fuel availability. Here, we evaluate the mechanisms of metabolic flexibility in insects that are considered short-term, medium-term, and long-term responses.
View Article and Find Full Text PDFJ Community Psychol
September 2025
Department of Behavioral, Social and Health Education Sciences, Rollins School of Public Health at Emory University, Atlanta, Georgia, USA.
Over the last decade, a range of research has demonstrated the detrimental impacts of policies criminalizing migration ("crimmigration") on Latinx mental health. In this study, we seek to examine youth perspectives on how crimmigration policies affect Latinx adolescents' connections to Latinx identity, culture, and communities and the implications for Latinx youth mental health. We explored how immigration enforcement policies affect Latinx youths' mental health using photovoice with ten youth in a high-deportation county in Atlanta in 2022.
View Article and Find Full Text PDFWien Klin Wochenschr
September 2025
3rd Medical Department with Cardiology and Intensive Care Medicine, Clinik Ottakring (Wilhelminenhospital), Montleartstraße 37, 1160, Vienna, Austria.
Background: Acute heart failure (AHF) significantly contributes to cardiovascular morbidity and mortality, bearing a substantial socioeconomic burden. While the dynamics of chronic heart failure have been extensively explored in global patient cohorts, comprehensive data specific to AHF remain limited.
Methods: This retrospective, single-center, real-world study comprises hospitalized patients with AHF, admitted to a tertiary care hospital in Vienna, Austria, between 1 January 2012 and 31 December 2019.