Results 141 to 150 of about 155,307 (181)

Disentangling Advection and Lagrangian Evolution of Surface Chlorophyll in a Nearshore Submarine Canyon Using Satellite Remote Sensing and High‐Frequency Radar

Journal of Geophysical Research: Oceans, Volume 130, Issue 5, May 2025.
Abstract Palmer Deep submarine canyon on the western Antarctic Peninsula hosts permanent penguin breeding rookeries and is characterized by elevated chlorophyll‐a compared to the surrounding continental shelf. Particle residence times within the canyon are shorter than phytoplankton doubling times, which points to the ecosystem's productivity being ...
Darren C. McKee, Jacquelyn M. Veatch, Maria T. Kavanaugh, Josh T. Kohut, Scott C. Doney   +4 more
wiley   +1 more source

Characterization of Hydraulic Parameters via Sensitivity Maps for Frequency‐Based Oscillatory Pumping in 2D, Confined, Weakly Heterogeneous Aquifers

Water Resources Research, Volume 61, Issue 5, May 2025.
Abstract Multi‐frequency oscillatory pumping, in which the groundwater is extracted during a half period, and then reinjected, has recently been used to characterize aquifer heterogeneity. After the initial transition time, a steady periodic head can be observed at the observation well with constant amplitude and phase shift.
Jiong Zhu, Yuanyuan Zha, Dong Xu
wiley   +1 more source

Collaborative and Reproducible Planetary Science Through the Europlanet GMAP JupyterHub Processing Environment

Earth and Space Science, Volume 12, Issue 5, May 2025.
Abstract JupyterHub is an open‐source system enabling multiple users to access individual computational environments. This facilitates collaborative development and execution of Jupyter notebooks, Python scripts, and other tools among researchers and educators through a unified interface.
G. Nodjoumi, C. H. Brandt, J. E. Suárez‐Valencia, E. Luzzi, M. Valiante, A. P. Rossi   +5 more
wiley   +1 more source

Nutrition for all? Input subsidies and equitable diets

Review of Development Economics, Volume 29, Issue 2, Page 1024-1057, May 2025.
Abstract While agricultural input subsidies can improve productivity and nutrition, a key unanswered question is whether such government initiatives influence equitable nutrition access across genders. We study gender disparities in dietary diversity among 7783 smallholder farms in Zambia, evaluating the potential of subsidies to mitigate gaps.
John N. Ng'ombe, Stephen Prah, Rebecca N. Kiwanuka‐Lubinda, Chewe Nkonde   +3 more
wiley   +1 more source

A Theory of Generalized Coordinates for Stochastic Differential Equations

Studies in Applied Mathematics, Volume 154, Issue 5, May 2025.
ABSTRACT Stochastic differential equations are ubiquitous modeling tools in applied mathematics and the sciences. In most modeling scenarios, random fluctuations driving dynamics or motion have some nontrivial temporal correlation structure, which renders the SDE non‐Markovian; a phenomenon commonly known as ‘colored’’ noise.
Lancelot Da Costa, Nathaël Da Costa, Conor Heins, Johan Medrano, Grigorios A. Pavliotis, Thomas Parr, Ajith Anil Meera, Karl Friston   +7 more
wiley   +1 more source

Mechanical Hamiltonization of Unreduced ϕ$\phi$‐Simple Chaplygin Systems

Studies in Applied Mathematics, Volume 154, Issue 5, May 2025.
ABSTRACT In this paper, we prove that the trajectories of unreduced ϕ$\phi$‐simple Chaplygin kinetic systems are reparameterizations of horizontal geodesics with respect to a modified Riemannian metric. Furthermore, our proof is constructive and these Riemannian metrics, which are not unique, are obtained explicitly in interesting examples.
Alexandre Anahory Simoes, Juan Carlos Marrero, David Martín de Diego   +2 more
wiley   +1 more source

CR$CR$ analysis via local uniform completion, a sharp maximum modulus principle and holomorphic extension

Journal of the London Mathematical Society, Volume 111, Issue 5, May 2025.
Abstract Using iterated uniform local completion, we introduce a notion of continuous CR$CR$ functions on locally closed subsets of reduced complex spaces, generalising both holomorphic functions and CR$CR$ functions on CR$CR$ submanifolds. Under additional assumptions of set‐theoretical weak pseudo‐concavity, we prove optimal maximum modulus ...
Mauro Nacinovich, Egmont Porten
wiley   +1 more source

Minimal limit key polynomials

Journal of the London Mathematical Society, Volume 111, Issue 5, May 2025.
Abstract In this paper, we extend the theory of minimal limit key polynomials of valuations on the polynomial ring K[x]$K[x]$. Minimal key polynomials are useful to describe, for instance, the defect of an extension of valued fields. We use the theory of cuts on ordered abelian groups to show that the previous results on bounded sets of key polynomials
Enric Nart, Josnei Novacoski
wiley   +1 more source

The Temperley–Lieb tower and the Weyl algebra

Journal of the London Mathematical Society, Volume 111, Issue 5, May 2025.
Abstract We define a monoidal category W${\mathbf {W}}$ and a closely related 2‐category 2Weyl${\mathbf {2Weyl}}$ using diagrammatic methods. We show that 2Weyl${\mathbf {2Weyl}}$ acts on the category TL:=⨁nTLn−mod$\mathbf {TL}:=\bigoplus _n \operatorname{TL}_n\mathrm{-mod}$ of modules over Temperley–Lieb algebras, with its generating 1‐morphisms ...
Matthew Harper, Peter Samuelson
wiley   +1 more source

Realization of spaces of commutative rings

Journal of the London Mathematical Society, Volume 111, Issue 5, May 2025.
Abstract Motivated by recent work on the use of topological methods to study collections of rings between an integral domain and its quotient field, we examine spaces of subrings of a commutative ring, endowed with the Zariski or patch topologies. We introduce three notions to study such a space X$X$: patch bundles, patch presheaves and patch algebras.
Laura Cossu, Bruce Olberding
wiley   +1 more source