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The early evolution of the quasar luminosity function (QLF) and black hole mass function (BHMF) encodes key information on the physics determining the radiative and accretion processes of supermassive black holes (BHs) in high-$z$ quasars.…

Astrophysics of Galaxies · Physics 2023-06-28 Wenxiu Li , Kohei Inayoshi , Masafusa Onoue , Daisuke Toyouchi

The galactic halo likely grew over time in part by assembling smaller galaxies, the so-called building blocks. We investigate if the properties of these building blocks are reflected in the halo white dwarf (WD) population in the Solar…

Astrophysics of Galaxies · Physics 2018-12-11 Pim van Oirschot , Gijs Nelemans , Else Starkenburg , Silvia Toonen , Amina Helmi , Simon Portegies Zwart

A new dynamic latent space eigenmodel (LSM) is proposed for weighted temporal networks. The model accommodates integer-valued weights, excess of zeros, time-varying node positions (features), and time-varying network sparsity. The latent…

Methodology · Statistics 2026-04-15 Roberto Casarin , Matteo Iacopini , Antonio Peruzzi

Aquaculture has been the fastest growing food production sector globally due to its potential to improve food security, stimulate economic growth, and reduce poverty. Its rapid development has been linked to sustainability challenges, many…

Populations and Evolution · Quantitative Biology 2025-02-27 Sonja Radosavljevic , Ezio Venturino , Francesca Acotto , Quanli Wang , Jie Su , Alexandros Gasparatos

In this study, we consider three dark energy models in which $\Lambda$ is not constant, but has a dynamic nature that depends on the Hubble parameter $H$ and/or its time derivative $\dot{H}$. We analyze the generalized running vacuum model,…

Cosmology and Nongalactic Astrophysics · Physics 2022-01-05 Christine R. Farrugia , Joseph Sultana , Jurgen Mifsud

Brown dwarfs form the key, yet poorly understood, link between stellar and planetary astrophysics. These objects offer unique tests of Galactic structure, but observational limitations have inhibited their large-scale analysis to date.…

Solar and Stellar Astrophysics · Physics 2025-04-11 Easton J. Honaker , John E. Gizis

The field of active matter explores the behaviors of self propelled agents out of equilibrium, with active suspensions, such as swimming bacteria in solutions, serving as impactful models. These systems exhibit spatio-temporal patterns akin…

Soft Condensed Matter · Physics 2025-08-26 Pratikshya Jena , Shradha Mishra

A lattice-Boltzmann (LB) scheme, based on the Bhatnagar-Gross-Krook (BGK) collision rules is developed for a phase-field model of alloy solidification in order to simulate the growth of dendrites. The solidification of a binary alloy is…

Computational Physics · Physics 2017-07-26 Alain Cartalade , Amina Younsi , Mathis Plapp

Bees undergo a self-organised process known as shimmering, where they form emergent patterns when they interact with each other on the nest surface as a defence mechanism in response to predator attacks. Many experimental studies have…

Adaptation and Self-Organizing Systems · Physics 2024-01-26 Navin Patel , Henri Huijberts , Kaspar Althoefer , Ketao Zhang

A new model for biological growth is introduced that couples the geometry of an organism (or part of the organism) to the flow and deposition of material. The model has three dynamical variables (a) a Riemann metric tensor for the geometry,…

Biological Physics · Physics 2010-10-05 Julia Pulwicki , David Hobill

The study of biomolecular folding has been greatly advanced by single-molecule force spectroscopy (SMFS), which enables the observation of the dynamics of individual molecules. However, extracting quantitative models of fundamental…

Chemical Physics · Physics 2026-04-30 Lars Dingeldein , Aaron Lyons , Pilar Cossio , Michael Woodside , Roberto Covino

For situations that may benefit from information sharing among datasets, e.g., population-based SHM of similar structures, the hierarchical Bayesian approach provides a useful modelling structure. Hierarchical Bayesian models learn…

Machine Learning · Computer Science 2024-01-04 T. A. Dardeno , K. Worden , N. Dervilis , R. S. Mills , L. A. Bull

White dwarf stars are subject to various element transport mechanisms that can cause their surface composition to change radically as they cool, a phenomenon known as spectral evolution. In this paper, we undertake a comprehensive…

Solar and Stellar Astrophysics · Physics 2022-03-14 A. Bédard , P. Brassard , P. Bergeron , S. Blouin

As they evolve, white dwarfs undergo major changes in surface composition, a phenomenon known as spectral evolution. In particular, some stars enter the cooling sequence with helium atmospheres (type DO) but eventually develop hydrogen…

Solar and Stellar Astrophysics · Physics 2020-10-07 A. Bédard , P. Bergeron , P. Brassard , G. Fontaine

Context: Seamless model-based development provides integrated chains of models, covering all software engineering phases. Non-functional requirements (NFRs), like reusability, further play a vital role in software and systems engineering,…

Software Engineering · Computer Science 2017-02-27 Jonas Eckhardt , Daniel Méndez Fernández , Andreas Vogelsang

Flour beetles (genus Tribolium) have long been used as a model organism to understand population dynamics in ecological research. A rich and rigorous body of work has cemented flour beetles' place in the field of mathematical biology. One…

Populations and Evolution · Quantitative Biology 2024-11-25 Samantha J. Brozak , Sophia Peralta , Tin Phan , John D. Nagy , Yang Kuang

In this paper we propose the Hatching-Box, a novel imaging and analysis system to automatically monitor and quantify the developmental behavior of Drosophila in standard rearing vials and during regular rearing routines, rendering explicit…

Computer Vision and Pattern Recognition · Computer Science 2026-01-16 Julian Bigge , Maite Ogueta , Luis Garcia , Benjamin Risse

Dark energy can be investigated in two complementary ways, by considering either general parameterizations or physically well-defined models. Following the second route, we explore the constraints on quintessence models where the…

Evolution, the engine behind the survival and growth of life on Earth, operates through the population-based process of reproduction. Inspired by this principle, this paper formally defines a newly emerging problem -- the population-based…

Computation and Language · Computer Science 2025-03-10 Yiqun Zhang , Peng Ye , Xiaocui Yang , Shi Feng , Shufei Zhang , Lei Bai , Wanli Ouyang , Shuyue Hu

Mathematical modelling of the evolution of the size-spectrum dynamics in aquatic ecosystems was discovered to be a powerful tool to have a deeper insight into impacts of human- and environmental driven changes on the marine ecosystem. In…

Analysis of PDEs · Mathematics 2024-01-02 Laura Kanzler , Benoit Perthame , Benoit Sarels
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