Carnegie Mellon University

Resorufin‐Catalyzed PhotoATRP Under Red Light

ABSTRACT The sodium salt of resorufin (RSF), an inexpensive, water‐soluble, commercially available phenoxazinone dye, serves as an efficient photocatalyst for low‐copper dual‐catalysis PhotoATRP across the visible spectrum. RSF loadings as low as 1 ppm catalyzed PhotoATRP of acry...

Service-Level Utilization in Risk-Based Contracts and a Benchmarking Approach for Fee-Schedule Reforms

Importance Despite revived interest in reforming the physician fee schedule, it is unclear how policymakers should modify more than 1000 different physician service prices to promote high-value care. One systematic approach could leverage service-level utilization patterns in ful...

Compiling WebAssembly Concolic Execution with Staging, Continuations, and Snapshots

Concolic execution is a variant of symbolic execution that runs a program simultaneously with concrete and symbolic inputs. It records the symbolic constraints encountered along a concrete execution path, then solves those constraints to generate inputs that explore new paths. Ex...

CONCUR: Benchmarking LLMs for Concurrent Code Generation

Leveraging Large Language Models (LLMs) for code generation has increasingly emerged as a common practice in the domain of software engineering. Relevant benchmarks have been established to evaluate the code generation capabilities of LLMs. However, existing benchmarks focus prim...

Asymptotic analysis of higher-order perturbations of the Perona–Malik functional

Abstract The Γ-limit of higher-order singular perturbations of the Perona–Malik functional is analyzed. The energies considered combine the critically scaled logarithmic term with a k -th order regularization designed to balance bulk and interfacial effects. A compactness result...

Molecular Parameters Favoring Disordered Hyperuniformity in Brush Particle Materials

Abstract The concurrence of “single crystal-like” uniformity and isotropy of structure and properties is expected to endow disordered hyperuniform (DH) materials with novel property combinations that have fueled interest in DH hybrid materials as a platform for functional materia...

Note on a Conjecture of Talagrand: Expectation Thresholds vs. Fractional Expectation Thresholds

We show that a restricted version of a conjecture of M. Talagrand on the relation between "expectation thresholds" and "fractional expectation thresholds" follows easily from a strong version of a second conjecture of Talagrand, on "selector processes". The selector process conje...

Oxygen‐Tolerant, Controlled Synthesis of Degradable and Water‐Soluble Poly(Vinyl Amide)s via Radical Ring‐Opening Copolymerization of Cyclic Dithiothreitol

ABSTRACT Radical ring‐opening polymerization (rROP) has emerged as a powerful strategy for introducing degradable linkages into vinyl polymer backbones. In this study, we report an oxygen‐tolerant photoinduced electron/energy transfer reversible addition–fragmentation chain trans...

Second‐Sphere Aromatic Substitutions That Tune H‐Atom Transfer Reactivity Observed for a Series of S = 1 Nonheme Fe IV =O Complexes: An Enthalpy‐Entropy Compensation Effect

ABSTRACT Synthetic nonheme Fe IV ═O complexes reported thus far often have S = 1 ground states, demonstrating markedly lower oxidative reactivity in C─H bond breakage compared to their S = 2 counterparts. Recently, we have identified that incorporating cycloalkyl groups into the...

Empire Amplifier: Uncovering and Contesting the Prioritization of Colonial Content on Platforms Through Community-Informed Algorithmic Auditing

Though online platforms claim to amplify Indigenous voices, Indigenous communities are worried that these systems are instead eroding their language and culture. We conduct a community-informed algorithmic audit to explore whether online platforms sustain or endanger Indigenous c...

Constructing Algorithmic Authority: How Multi-Channel Networks (MCNs) Govern Live-Streaming Labor in China

This study examines the discursive construction of algorithms and its role in labor management in Chinese live-streaming industry by focusing on how intermediary organizations (Multi-Channel Networks, MCNs) actively construct, stabilize, and deploy particular interpretations of p...

Balancing Teacher and Student Agency: Co-Orchestration Tool Design Supporting Real-Time Dynamic Pairing

In human-AI interaction, respecting user agency is essential for fostering trust and sustaining effective use of technology. In educational settings, dynamically integrating individual and collaborative learning offers pedagogical value by supporting personalized, self-paced lear...

“Law at Your Fingertips”: Understanding Legal Information Seeking on Video-Sharing Platforms in China

Equipping laypeople with the capabilities to seek legal information has been an important goal for Legal Empowerment in modern society. However, unlike general information-seeking behaviors, legal information seeking is characterized by high stakes, urgency, and a critical need f...

Generative AI as a Mediator in Creator Collaboration: Challenges, Design Opportunities, and Concerns

As Generative AI (GenAI) expands beyond individual workflows and becomes increasingly integrated into collaborative creative work, its potential to address the fundamental challenge of building common ground among creators with diverse expertise remains underexplored. Specificall...

AI LEGO: Scaffolding Cross-Functional Collaboration in Industrial Responsible AI Practices during Early Design Stages

Responsible AI (RAI) efforts increasingly emphasize the importance of addressing potential harms early in the AI development lifecycle through social-technical lenses. However, in cross-functional industry teams, this work is often stalled by a persistent coordination challenge:...

"I Just Don't Want My Work Being Fed Into The AI Blender": Queer Artists on Refusing and Resisting Generative AI

Art-making is a collective social activity through which queer people engage in political resistance, develop identities, archive queer memory, and form community. However, in recent years, generative AI has disrupted queer artistic communities. Through 15 semi-structured intervi...

Exploring Healthcare Professionals’ Views on Effective Feeding Interventions for Mealtime Management in Autistic Children: A Delphi Study

Abstract Aim: This study aimed to identify consensus among healthcare professionals regarding feeding interventions and strategies for autistic children and to explore their experiences and perspectives on implementing these approaches in the South African context. Methods: An e-...

Mechanism of Multiple Emission in Gold Quantum Boxes and Design Rules for Strong Near-Infrared Luminescence

Abstract Ligand-protected gold nanoclusters (Au NCs) hold great promise for near-infrared photonics and bioimaging, but their low photoluminescence quantum yields (PLQYs) and unclear emission mechanisms have limited the rational design of highly luminescent NCs. Here, we report a...

Protein Thioether Crosslinks Installed by a SPASM-Containing Radical SAM Enzyme from Methanogenic Archaea

Abstract Cysteine is a vital amino acid with wide biological utility, serving functions in catalysis, ligand binding, and maintenance of protein structures. In a subset of natural products, termed ribosomally synthesized and post-translationally modified peptides (RiPPs), multipl...

BlastMap: A Policy-Level Score for How Machine Identity Over-Privilege Amplifies Cloud AI Attack Vectors

Cloud AI systems rely on machine identities to access storage, logging, computing, and other services. These identities are frequently granted more permissions than their workloads require. If a workload is compromised, an attacker may inherit those permissions, increasing the po...