Research works

Ground-motion dataset for shallow earthquakes in Colombia

Abstract. The tectonics of Colombia is characterised by the interaction of multiple oceanic plates subducting beneath the continent, generating active transpressional deformation and a wide range of subduction-related and crustal earthquakes. We present a flatfile containing grou...

Evolved differences in microglial cell biology between surface and cave populations of Astyanax mexicanus

Microglia govern multiple aspects of brain architecture and function by eliminating dying neurons and glia, stimulating neurogenesis, refining neural connections, and orchestrating immune responses. The Mexican tetra, Astyanax mexicanus, is a powerful model system for investigati...

Quantifying exposure and residence time of migrating Atlantic salmon post-smolts at aquaculture sites in a region of extreme tides

Aquaculture production now exceeds capture fisheries, but concerns persist regarding environmental impacts. Salmon farms within Atlantic salmon (Salmo salar) migratory corridors may create hotspots of predation, parasites, or disease that could affect out-migrating post-smolts. H...

Ultrafast Dynamics of Competing Dimethyl Disulfide Photodissociation Pathways

Abstract Disulfide photochemistry impacts a wide range of chemical processes from biological UV photodamage to polymer self-healing and green photocatalysis. Despite this, the response of disulfide bonds to deep-UV light remains poorly understood. Dimethyl disulfide serves as a m...

Antarctic sea ice response to meltwater due to Antarctic ice sheet mass loss in a multi-model ensemble

Abstract. We present the first multi-model study of the Antarctic sea ice response to enhanced meltwater due to dynamic mass loss from the Antarctic ice sheet. This meltwater flux (and its future increase under global warming) is not included in the most recent state-of-the-art c...

Surface Quadrilateral Meshing from Integrable Odeco Fields

Abstract We present a method for generating orthogonal quadrilateral meshes subject to user‐defined feature alignment and sizing constraints. The approach relies on computing integrable orthogonal frame fields, whose symmetries are implicitly represented using orthogonally decomp...

Virtual element approximation of eigenvalue problems: Is the stabilization of the right hand side necessary?

The VEM approximation of eigenvalue problems usually involves the appropriate tuning of stabilization parameters, unless self-stabilizing or stabilization-free VEM are used. In this paper we prove that for elliptic self-adjoint eigenvalue problems the stabilization of the mass ma...

Continuous-time evolution via probabilistic angle interpolation and its applications

We explore the applicability of a stochastic time-evolution algorithm based on probabilistic angle interpolation. To simplify the pre-processing of the algorithm, we take the continuous-time limit, thereby explicitly eliminating Trotter errors and streamlining the resource analys...

Irregularly and incompletely sampled random fields in the Earth sciences: Analysis and synthesis of parameterized covariance models

Summary Geophysical data observed in the Earth, planetary, and lunar sciences are spatially limited to sampling plans designed to span a feature of interest whose resolution and regularity in discretization are bound by site, observational, and instrumental constraints. Common wi...

Selective Electrochemical Lithium-Ion Extraction from Low-Grade Lithium Sources with Optimized Pulsed Operation

Abstract Lithium recovery from brines, particularly low-grade resources, remains a major challenge. Here, we develop an electrochemical lithium-ion extraction system based on carbon-coated LiFePO4 as the working electrode and systematically elucidate how the carbon coating govern...

Pore-scale modeling of capillary-driven binder migration during battery electrode drying

Sodium-ion batteries employing hard carbon electrodes are considered a drop-in technology for lithium-ion batteries. Electrode drying is a critical manufacturing step, as binder migration during pore emptying impacts the mechanical integrity and electrical performance of the elec...

Classifying Prime Character Degree Graphs With Eight Vertices

In this paper, an effort is made to classify which prime character degree graphs having eight vertices occur for some finite solvable group. To approach this, we compile known results and constructions from the literature which are used to develop a general algorithm to begin cla...

Millimeter-Scale, Atomically Controlled 2D Topological Insulators Revealed by Multimodal Spectroscopy

Abstract Quantum spin Hall insulators, also known as 2D topological insulators, are crucial 2D systems hosting topologically protected edge states. The working temperature of this topological quantum phase is dictated by the inverted bandgap. However, the previously identified la...

The Metric Slingshot: Navigational Reuse as Width-Optimal Structural Decoupling in Continual Learning

Abstract The mammalian brain, most extensively studied in rodents and bats, solves an enormous variety of nonspatial cognitive tasks using neural circuitry, including grid cells, place cells, and hippocampal indexing, that originally evolved for physical navigation. We formalize...

States of 2D Yang-Mills and large-volume entanglement

A bstract We explore the relation between geometry, topology and entanglement for quantum states in two-dimensional Yang-Mills theory. The most familiar class of states in this theory are states defined by Euclidean path integrals over Riemann surfaces. Bipartite states of this c...

Spec2VEC : Interpretable Spectral Representations of Planetary Signals in Vector Spaces

Summary The application of machine learning to planetary geophysics is frequently bottlenecked by a scarcity of labeled data and the complexity of non-stationary seismo-acoustic signals. While deep learning offers powerful feature extraction, it requires massive datasets that are...

Fine Asymptotics of the Magnetization of the Annealed Dilute Curie-Weiss Model

Abstract We consider the dilute Curie-Weiss model of size N , which is a generalization of the classical Curie-Weiss model in which the dependency structure between the spins is encoded not by the complete graph but by the (directed) Erdős-Rényi graph on N vertices in which every...

Fault-tolerant execution of error-corrected quantum algorithms

Scaling up quantum algorithms to tackle high-impact problems in science and industry requires quantum error correction and fault tolerance. While progress has been made in experimentally realizing error-corrected primitives, the end-to-end execution of logical quantum algorithms...

Arrow pattern avoidance in permutations: structure and enumeration

Arrow patterns were introduced by Berman and Tenner as a generalization of vincular patterns. They observed that arrow patterns have the potential to bridge the divide between a permutation's cycle notation and its one-line notation; in support of this, they used arrow avoidance...

Magnetic omniconversion: Source-independent molding of magnetostatic fields

Magnetic fields are constrained by the geometry and location of their sources, limiting the ability to freely tailor their spatial distribution. We introduce a general framework to passively convert the magnetic field generated by arbitrary sources into any prescribed desired fie...