University of Colorado Boulder

Conformal oxides decouple chemical stability and energetics at NiO x /perovskite interfaces

Nickel oxide (NiO x ) is a common hole transport layer (HTL) in perovskite photovoltaics, but the chemical reactivity of NiOx surfaces accelerates degradation when contacting perovskites. We developed an ultrathin, conformal tin oxide (SnO x ) interlayer to suppress interfacial r...

Bridging Minds and Machines: Mapping the Terrain of Communication in Human-AI Teams — A Systematic Literature Review

As AI becomes increasingly adept at communicating with humans in natural language and complementing human skills in various collaborative and teamwork settings, how the CSCW community understands the evolving role of communication in human-AI teams (HATs) urgently needs to keep p...

Simulating Bouncing Packets Driven by Ducted Lightning‐Generated Whistlers: Comparison With SAMPEX Observations

Abstract Bouncing packets are quasi‐periodic microbursts separated by the electron bounce period. Solar Anomalous and Magnetospheric Particle Explorer observations revealed relativistic (>1 MeV) inner‐belt bouncing packets with “crown,” “decaying,” and “flat” envelopes. We test w...

Abolition Feminism and the Practice of Policing

Abstract In November of 2021, more than a year after the public execution of George Floyd by local police officers, Minneapolis voters rejected an amendment to its city charter (‘Question 2’) to abolish its police department. One of the most interesting points of contention betwe...

On the complexity of isomorphism problems for tensors, groups, and polynomials III: actions by classical groups

Abstract We study the complexity of isomorphism problems for tensors, represented in coordinates by multiway arrays, under natural actions by classical groups such as orthogonal, unitary, and symplectic groups. These problems arise naturally in statistical data analysis and quant...

Seasonal to decadal evolution of firn properties and impacts on hydrology of the Juneau Icefield

Alpine glaciers of Alaska are significant contributors to global sea-level rise. Most Alaskan glaciers lose mass through surface melt due to increasing atmospheric temperatures. Surface melt may be retained or run off in the snow and firn, potentially altering regional glacial hy...

Phosphorus limits the growth of bacterial and eukaryotic primary producers in recently deglaciated High Arctic soils

Glaciers are receding at unprecedented rates worldwide, exposing large areas of barren sediment that are quickly colonized by microbes. Nutrient availability is a critical driver of early ecosystem succession, but in the High Arctic its role has remained uncertain. This limits me...

Industrial thermal energy supply options: A multifactor evaluation framework

Industrial heat production represents approximately 50% of U.S. manufacturing sector energy needs and related emissions, yet emission reduction strategies for this sector remain underexplored relative to power and transportation. This study applies the open-source LiAISON (Life c...

Outward-facing legitimacy in Saudi English-language news: sport diplomacy and reputational scrutiny after the FIFA 2034 decision

Abstract Purpose This study examines how Saudi English-language news portrayed Saudi Arabia’s appointment to host the 2034 FIFA World Cup as outward-facing public sports diplomacy. It also explores how these news texts managed the sportswashing counter-claim during the immediate...

The Cloud Feedback Model Intercomparison Project (CFMIP) contribution to CMIP7

Cloud processes constitute one of the key uncertainties for climate change projections. The fourth iteration of the Cloud Feedback Model Intercomparison Project, CFMIP4, contributes to the Coupled Model Intercomparison Project phase 7 (CMIP7), by providing a set of global climate...

When Responsibility Compensates for Ownership: Agency Theory, State Capitalism, and the Scale of Chinese OFDI

This paper investigates how the ownership structures of Chinese enterprises shape their outward foreign direct investment (OFDI) outcomes, and whether corporate social responsibility (CSR) performance alters that relationship. Drawing on agency theory and a firm-level panel datas...

Astrocytic Resource Diffusion Stabilizes Persistent Activity in Neural Fields

Abstract. Persistent neural activity underlying working memory requires sustained synaptic transmission, yet the metabolic and neurotransmitter support provided by astrocyte networks is largely absent from spatially extended neural circuit models. We introduce a coupled astrocyte...

Stay Healthy for Your (Our) Community: Examining How Source Identity Affects Black Americans’ Responses to Targeted COVID-19 Messages

Many communications during the pandemic emphasized COVID-19’s disproportionate impact on Black Americans. Articles highlighting such racial health disparities can act as a form of health information targeting , which can be threatening when aimed at marginalized identities. In St...

Multi-season evaluation of temperature and wind in the marine boundary layer along the United States northeast coast in the High-Resolution Rapid Refresh model

The High-Resolution Rapid Refresh (HRRR) model is run operationally by the National Oceanic and Atmospheric Administration to provide high-resolution short-range forecasts for the continental United States. The evaluation of the HRRR model off of the United States coasts has been...

Extratropical teleconnections in a multi-model ensemble nudged towards the observed QBO

The Quasi-Biennial Oscillation (QBO), the dominant mode of interannual variability of monthly-mean zonal winds and temperatures in the equatorial stratosphere, has a significant influence on the circulation in other regions of the stratosphere and troposphere in boreal winter. To...

Ten rules to increase the usability of earth observation mission datasets

Abstract Publicly-funded Earth Observation (EO) missions present unprecedented challenges and opportunities for observing our changing planet and applying the knowledge gained to benefit society. As EO mission data continue to grow in volume and complexity, a paradigm shift in ho...

WSINDy for model predictive control with applications to fusion, drones and chaos

Abstract The control of complex dynamical systems remains a fundamental challenge in science and engineering, where strong nonlinearities, the presence of noise and computational constraints often pose significant obstacles in traditional control approaches. Recent advances in da...

Insights into modes and timing of microbialite mineralization from mobile microbialite grains in Great Salt Lake, Utah, U.S.A.

ABSTRACT Microbialites are among the earliest indications of life on Earth and interpreting the formation mechanisms—both abiotic and microbially mediated—of mineral assemblages and microfabrics in these structures is a crucial part of understanding Earth’s geobiological record....

SPEF1 mediates assembly of central pair microtubule complexes in cilia of Tetrahymena

SPEF1 is a conserved calponin-homology domain protein that decorates the seam of central pair microtubules in the distal segment of motile cilia. Here, we show that in the ciliate Tetrahymena, loss of SPEF1 disrupts the central pair throughout the middle segment, which comprises...

Appraising familial prediction of proband outcomes in neurogenetic disorders

Abstract Background Gene dosage disorders impact cognition and psychopathology, but outcomes vary widely amongst carriers of the same variant. Recent work has sought to better predict proband outcomes using measures of corresponding traits in family members. However, family-based...