Results 31 to 40 of about 1,952,749 (256)
Journal of Mathematics, 2022 In view of a time lag between the time that the prey perceive predator signals and make some changes or behavior responses, we establish a predator–prey system with direct and indirect predation in this paper.
Weili Kong, Yuanfu Shao
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Dynamic Behavior of an Interactive Mosquito Model under Stochastic Interference
Mathematics, 2022 For decades, mosquito-borne diseases such as dengue fever and Zika have posed serious threats to human health. Diverse mosquito vector control strategies with different advantages have been proposed by the researchers to solve the problem.
Xingtong Liu, Yuanshun Tan, Bo Zheng
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A Unified Longevity–Financial Risk Framework for Evaluating Pension Funding Ratios
RisksDefined-benefit pension funds face simultaneous exposure to longevity risk and financial market volatility, yet most regulatory frameworks assess these risks in isolation using deterministic methods. This paper examines how their joint occurrence affects
Francesco Rania
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Variance and Interest Rate Risk in Unit-Linked Insurance Policies
Risks, 2020 One of the risks derived from selling long-term policies that any insurance company has arises from interest rates. In this paper, we consider a general class of stochastic volatility models written in forward variance form.
David Baños +2 more
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Risks, 2022 We construct a new age-specific mortality framework and implement an exemplar (DLGC) that provides an excellent fit to data from various countries and across long time periods while also providing accurate mortality forecasts by projecting parameters ...
Wanying Fu +3 more
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Demographic winter: declining fertility and increasing life expectancy in South American countries
Frontiers in Human DynamicsThis study examines the demographic winter process in ten South American countries during 1990-2100, focusing on the combined effects of declining fertility and increasing life expectancy.
Jhonatan Hinojosa Mamani +5 more
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Design and analysis strategies for robust microbiome ageing research
FEBS Letters, EarlyView.The gut microbiome changes with age and associates with age‐related morbidity and mortality, establishing it as a potential biomarker and intervention target for ageing. Realising this potential requires methodological rigour, yet distinguishing biological signals from methodological artefacts remains challenging across cohorts. This review provides an
Mark Olenik +5 more
wiley +1 more source
Long-Term Conservation Effects of Protected Areas in Stochastic Population Dynamics
Frontiers in Ecology and Evolution, 2021 Terrestrial and marine protected areas are essential tools in mitigating anthropogenic impacts and promoting population persistence and resource sustainability.
Nao Takashina
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Efficient simulation of stochastic chemical kinetics with the Stochastic Bulirsch-Stoer extrapolation method [PDF]
, 2014 BackgroundBiochemical systems with relatively low numbers of components must be simulated stochastically in order to capture their inherent noise. Although there has recently been considerable work on discrete stochastic solvers, there is still a need ...
Barrio Solórzano, Manuel +11 more
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Molecular Oncology, EarlyView.Breast cancer remains a major cause of cancer death in women, frequently developing endocrine therapy resistance. This study demonstrates that upregulated p21‐activated kinase 1 (PAK1) activity drives resistance to tamoxifen and long‐term estrogen deprivation in ER+ breast cancer models.
Luisa Schwarzmüller +10 more
wiley +1 more source