Matthew West
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View article: TChem-atm (v2.0.0): Scalable Performance-Portable Multiphase Atmospheric Chemistry
TChem-atm (v2.0.0): Scalable Performance-Portable Multiphase Atmospheric Chemistry Open
We present TChem-atm, a performance-portable approach that enables efficient simulation of chemically detailed and multiphase atmospheric chemistry on modern heterogeneous computing architectures. Unlike previous efforts that rely on archi…
View article: The impact of aerosol mixing state on immersion freezing: Insights from classical nucleation theory and particle-resolved simulations
The impact of aerosol mixing state on immersion freezing: Insights from classical nucleation theory and particle-resolved simulations Open
Immersion freezing, initiated by ice-nucleating particles (INPs) in supercooled aqueous droplets, plays an important role in the formation of ice crystals within clouds. The efficiency of immersion freezing depends strongly on INP composit…
View article: Polarimeter to Unify the Corona and Heliosphere (PUNCH)
Polarimeter to Unify the Corona and Heliosphere (PUNCH) Open
The Polarimeter to Unify the Corona and Heliosphere (PUNCH) mission is a NASA Small Explorer to determine the cross-scale processes that unify the solar corona and heliosphere. PUNCH has two science objectives: (1) understand how coronal s…
View article: Unstructured to structured: geometric multigrid on complex geometries via domain remapping
Unstructured to structured: geometric multigrid on complex geometries via domain remapping Open
For domains that are easily represented by structured meshes, robust geometric multigrid solvers can quickly provide the numerical solution to many discretized elliptic PDEs. However, for complicated domains with unstructured meshes, const…
View article: A statistical model for predicting water temperature in temperate rivers and streams
A statistical model for predicting water temperature in temperate rivers and streams Open
Context Water temperature affects the biology and ecology of many freshwater species. However, in situ water temperature measurements are not always available because of spatial or temporal gaps in observations. Aims We evaluated the impor…
View article: Teaching an old dog new tricks: Porting legacy code to heterogeneous compute architectures with automated code translation
Teaching an old dog new tricks: Porting legacy code to heterogeneous compute architectures with automated code translation Open
Legacy codes are in ubiquitous use in scientific simulations; they are well-tested and there is significant time investment in their use. However, one challenge is the adoption of new, sometimes incompatible computing paradigms, such as GP…
View article: Wbm0152, an outer membrane lipoprotein of the <i>Wolbachia</i> endosymbiont of <i>Brugia malayi</i>, inhibits yeast ESCRT complex activity
Wbm0152, an outer membrane lipoprotein of the <i>Wolbachia</i> endosymbiont of <i>Brugia malayi</i>, inhibits yeast ESCRT complex activity Open
Human pathogenic filarial nematodes of the family Onchocercidae, including Brugia malayi and Onchocerca volvulus, cause debilitating filarial diseases such as lymphatic filariasis and river blindness. These mosquito-borne pathogens are obl…
View article: Integrating Simulations and Observations: A Foundation Model for Estimating the Aerosol Mixing State Index
Integrating Simulations and Observations: A Foundation Model for Estimating the Aerosol Mixing State Index Open
Accurately predicting aerosol mixing states in real-world environments is crucial for understanding their impacts on climate change and human health. However, observational data inherently exhibit spatiotemporal gaps, and high costs and eq…
View article: Immersion Freezing in Particle‐Based Aerosol‐Cloud Microphysics: A Probabilistic Perspective on Singular and Time‐Dependent Models
Immersion Freezing in Particle‐Based Aerosol‐Cloud Microphysics: A Probabilistic Perspective on Singular and Time‐Dependent Models Open
Cloud droplets containing immersed ice‐nucleating particles (INPs) may freeze at temperatures above the homogeneous freezing threshold temperature in a process referred to as immersion freezing. In modeling studies, immersion freezing is o…
View article: Integrating Simulations and Observations: A Foundation Model for Estimating Aerosol Mixing State Index
Integrating Simulations and Observations: A Foundation Model for Estimating Aerosol Mixing State Index Open
The aerosol chemical mixing state refers to the distribution of chemical components within individual aerosol particles, which affects their physical properties and interactions with the environment, such as light absorption, cloud formati…
View article: The impacts of aerosol mixing state on heterogeneous N <sub>2</sub> O <sub>5</sub> hydrolysis
The impacts of aerosol mixing state on heterogeneous N <sub>2</sub> O <sub>5</sub> hydrolysis Open
Dinitrogen pentoxide (N2O5) is an important nighttime reservoir for nitrogen oxides (NOx). Heterogeneous hydrolysis on aerosol particles is a major loss pathway for N2O5, removing NOx from the atmosphere. Current models use the bulk compos…
View article: Explicit stochastic advection algorithms for the regional-scale particle-resolved atmospheric aerosol model WRF-PartMC (v1.0)
Explicit stochastic advection algorithms for the regional-scale particle-resolved atmospheric aerosol model WRF-PartMC (v1.0) Open
This paper presents the development of a stochastic particle method to simulate advection in regional-scale models with a particle-resolving aerosol representation. The new method is based on finite-volume discretizations with the flux ter…
View article: The diversity, frequency and severity of natural hazard impacts on subsea telecommunications networks
The diversity, frequency and severity of natural hazard impacts on subsea telecommunications networks Open
Subsea cables underpin global communications, carrying more than 99 % of all digital data traffic worldwide. While this >1.6 million km-long network has been designed to be highly resilient, subsea cables can be damaged by a number of natu…
View article: Predicting survival in prospective clinical trials using weakly-supervised QSP
Predicting survival in prospective clinical trials using weakly-supervised QSP Open
Quantitative systems pharmacology (QSP) models of cancer immunity offer a mechanistic understanding of cellular dynamics and drug effects that are often challenging to investigate clinically. Despite their success, these models are limited…
View article: Reflections on 10 years of Operating a Computer-based Testing Facility: Lessons Learned, Best Practices
Reflections on 10 years of Operating a Computer-based Testing Facility: Lessons Learned, Best Practices Open
In the U.S., enrollments across engineering disciplines continue to grow as colleges and universities work to respond to projected critical shortages of engineers. With these larger enrollments, institutions are faced with the challenge of…
View article: Effects of Integrating Computational Tools into an Introductory Engineering Mechanics Course
Effects of Integrating Computational Tools into an Introductory Engineering Mechanics Course Open
The integration of computational tools into engineering education has become pivotal, enhancing students' depth of knowledge and better preparing them for future careers. The Mechanical Engineering department at a large midwestern universi…
View article: Plagiarism in the Age of Generative AI: Cheating Method Change and Learning Loss in an Intro to CS Course
Plagiarism in the Age of Generative AI: Cheating Method Change and Learning Loss in an Intro to CS Course Open
Background: ChatGPT became widespread in early 2023 and enabled the broader public to use powerful generative AI, creating a new means for students to complete course assessments.
View article: A Comparison of Proctoring Regimens for Computer-Based Computer Science Exams
A Comparison of Proctoring Regimens for Computer-Based Computer Science Exams Open
In this paper, we explore three different methods for administering computer-based tests at scale: (1) a dedicated Computer-Based Testing Center (CBTC), (2) Bring Your Own Device (BYOD) exams proctored in person in the classroom, and (3) B…
View article: Comment on egusphere-2024-825
Comment on egusphere-2024-825 Open
Abstract. This paper presents the development of a stochastic particle method to simulate advection in regional-scale models with a particle-resolving aerosol representation. The new method is based on finite volume discretizations with th…
View article: The state of the aerosol: Musings on mixing state
The state of the aerosol: Musings on mixing state Open
Each particle of an atmospheric aerosol is composed of multiple chemical components, and a variety of particle compositions are present within a particle population. This fact poses unique challenges to modelers and experimentalists who st…
View article: Explicit stochastic advection algorithms for the regional scale particle-resolved atmospheric aerosol model WRF-PartMC (v1.0)
Explicit stochastic advection algorithms for the regional scale particle-resolved atmospheric aerosol model WRF-PartMC (v1.0) Open
This paper presents the development of a stochastic particle method to simulate advection in regional-scale models with a particle-resolving aerosol representation. The new method is based on finite volume discretizations with the flux ter…
View article: Leveraging Pre-trained and Transformer-derived Embeddings from EHRs to Characterize Heterogeneity Across Alzheimer's Disease and Related Dementias
Leveraging Pre-trained and Transformer-derived Embeddings from EHRs to Characterize Heterogeneity Across Alzheimer's Disease and Related Dementias Open
Alzheimer's disease is a progressive, debilitating neurodegenerative disease that affects 50 million people globally. Despite this substantial health burden, available treatments for the disease are limited and its fundamental causes remai…
View article: Comparing the Security of Three Proctoring Regimens for Bring-Your-Own-Device Exams
Comparing the Security of Three Proctoring Regimens for Bring-Your-Own-Device Exams Open
We compare the exam security of three proctoring regimens of Bring-Your-Own-Device, synchronous, computer-based exams in a computer science class: online un-proctored, online proctored via Zoom, and in-person proctored. We performed two ra…