Research works

Mutation Cycles from Reddening Sequences

Abstract Given two quivers, each with a reddening sequence, we show how to construct a plethora of mutation cycles. We give several examples, including a generalization of the construction of long mutation cycles in earlier work by the second author. We also give new results on t...

Unimodality for Radon Partitions of Random Vectors

Abstract Consider the (almost surely) unique Radon partition of a set of n random Gaussian vectors in $$\mathbb {R}^{n-2}$$ R n - 2 ; choose one of the two parts of this partition uniformly at random, and for $$0 \le k \le n$$ 0 ≤ k ≤ n , let $$ p_k $$ p k denote the probability...

Resolution of singularities for the dynamical mathematician

I begin by explaining to non-specialists why resolution of singularities in characteristic 0 works. Then I go into some ideas telling how it actually works. I finish with a brief discussion of related results on foliations.

HumaniBench: A Human-Centric Framework for Large Multimodal Models Evaluation

Although recent large multimodal models (LMMs) show impressive progress on vision–language tasks, their alignment with human-centered (HC) principles such as fairness, ethics, inclusivity, empathy, and robustness is often overlooked. Existing LMM benchmarks are largely accuracy-a...

Development and testing of ensemble-variational data assimilation capabilities for radar data within JEDI coupled with FV3-LAM model

Abstract. This study presents the first implementation and evaluation of radar reflectivity data assimilation capabilities within the ensemble three-dimensional variational (En3DVar) data assimilation (DA) system of the Joint Effort for Data assimilation Integration (JEDI) framew...

Quantifying atmospheric and land drivers of hot temperature extremes through explainable Artificial Intelligence

Abstract. Different drivers have been shown to play a central role in modulating the occurrence and intensity of summer temperature extremes, yet their individual contributions remain difficult to quantify. In this study, we develop an explainable machine‐learning framework to di...

Characterization of diseases in temporal comorbidity networks

Comorbidity networks, or disease-disease networks, represent relationships between diseases and can reveal non-random disease associations and multimorbidity structure. These patterns reflect shared pathophysiology, diagnostic pathways, and risk of adverse outcomes. Using large-s...

Steel surface defect detection based on dynamic receptive field and multi-scale features fusion

Abstract Steel surface defect detection is vital for guaranteeing product quality in contemporary manufacturing. However, traditional steel surface defect detection algorithms often face challenges due to insufficient resilience in feature extraction under complex backgrounds. To...

Fire‐Atmosphere Coupling Starts Upwind: Selective Redistribution of Turbulence at the Fire‐Induced Rear Inflow

Abstract Wildfires alter local atmospheric conditions, yet the spatial extent and frequency‐dependent characteristics of fire‐induced inflow perturbations remain largely unquantified. This study applies Multivariate Empirical Mode Decomposition (MEMD) to analyze high‐frequency ho...

Phase-Induced Particle Creation in the Kappa-Gamma Vacuum

Abstract The $\kappa$ plane wave construction describes a one-parameter family of vacua as continuous-mode squeezed states of the Minkowski vacuum, with a real, frequency-dependent squeezing magnitude set by a single scale $\kappa$. Here we promote this real squeezing to complex...

Positive Joint Work Redistribution in Running: The Role of Plantar Flexor Fatigue and the Effect of Advanced Footwear Technology

Abstract Over the course of a near-maximal effort 10 km run, positive mechanical work decreases at the ankle and increases at the knee. Although plantar flexor fatigue is believed to be responsible for the proximal shift in mechanical work generation, this has yet to be confirmed...

Detailed experimental investigation of the aerodynamics and blade/tower interaction of a 1.5 MW wind turbine in a downwind configuration

Abstract. We present a detailed experimental investigation of the flow details of the blade/tower interaction on a 1.5 MW wind turbine operated in a downwind configuration. The study aims to address claims of shortcomings in the downwind turbine concept, such as impulsive blade l...

Optimizing efficacy to safety ratio of glucocorticoids in rheumatoid arthritis models by leveraging PPARα agonism

ABSTRACT Objectives Glucocorticoids remain essential therapies for several immune- and inflammatory diseases such as rheumatoid arthritis (RA) but are notorious for their (metabolic) side effects. Given the anti-inflammatory and metabolically favorable actions of peroxisome-proli...

A decomposition-based matheuristic for the passenger-oriented integrated passenger-freight transport problem

Integrating passenger and freight transport has become increasingly important for improving the efficiency of urban mobility systems, as planning them separately often results in underutilized capacity and redundant vehicle movements. Coordinating the two enables more effective u...

Real-time reinforcement learning for turbulent state-dependent control in a bluff-body wake

Abstract Controlling turbulent dynamics remains a major challenge because their chaotic, multiscale nature strongly affects many fluid systems. Here, we present REACT, an autonomous reinforcement learning framework for real-time, state-dependent control of turbulent wake dynamics...

A new transcendence measure for the values of the exponential function at algebraic arguments

Let P ∈ ℤ [ X ] ∖ { 0 } be of degree δ ≥ 1 and usual height H ≥ 1 , and let α ∈ ℚ ¯ * be of degree d ≥ 2 . Mahler proved in 1931 the following transcendence measure for e α : for any ε > 0 , there exists c > 0 such that | P ( e α ) | > c / H μ ( d , δ ) + ε where the exponent μ (...

Ground beetles in agroforestry system show functional traits and activity-density differences according to distance to trees

Alley-cropping systems are arable agroforestry systems in which tree rows and associated grassy strips are established within cropped fields. This constitutes a promising approach to promote biodiversity and associated services in the vicinity of crops. However, there is still li...

Boundedness of Multilinear Littlewood–Paley Operators With Convolution Type Kernels on Products of BMO Spaces

ABSTRACT In this paper, the authors establish the existence and boundedness of multilinear Littlewood–Paley operators on the product of BMO spaces, including the multilinear ‐function, multilinear Lusin's area integral and multilinear ‐function. The authors prove that if the abov...

Assessing the Fitness-for-Purpose of Published Breath Analysis Data: A Quality Assessment Framework for Diabetes Biomarker Research

Abstract Background Exhaled breath analysis is a promising field for non-invasive diabetes diagnostics, but its clinical translation is hindered by contradictory findings across studies. We argue that this inconsistency stems from significant methodological heterogeneity and the...

Human and chimpanzee leaders are more risk-loving

Leadership and risk-taking are often assumed to be interrelated, but this assumption has rarely been investigated empirically in humans or other species. Analyzing data from the German Socio-Economic Panel (SOEP) and observer reports from two African chimpanzee sanctuaries, this...