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Showing 586 results for "sylvain perifel"
Mathematics Preprint PDF DOI

Analytic semigroup generated by the dispersal process of a sylvatic transmission model of Chagas disease

Narimene Benarbia (LANLMA), Rabah Labbas (LMAH), Tewfik Mahdjoub (LANLMA), Alexandre Thorel (LMAH) · 2026

In this work, we develop a new biological transmission model for Chagas disease. This model, set in two juxtaposed habitats with skew Brownian motion conditions at the interface, is composed of two re…

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Physics Preprint PDF DOI

Mesoscopic scattering dynamics under generic uniform SU(2) gauge fields: Spin-momentum relaxation and coherent backscattering

Masataka Kakoi, Christian Miniatura, Keith Slevin · 2026

We investigate the time- and momentum-resolved dynamics of matter waves undergoing elastic scattering from a disordered potential in the presence of spatially uniform SU(2) gauge fields. We derive the…

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AI & Data Science Preprint PDF DOI

On the Peril of (Even a Little) Nonstationarity in Satisficing Regret Minimization

Yixuan Zhang, Ruihao Zhu, Qiaomin Xie · 2026

Motivated by the principle of satisficing in decision-making, we study satisficing regret guarantees for nonstationary $K$-armed bandits. We show that in the general realizable, piecewise-stationary s…

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Engineering Preprint PDF DOI

Seed2Scale: A Self-Evolving Data Engine for Embodied AI via Small to Large Model Synergy and Multimodal Evaluation

Cong Tai, Zhaoyu Zheng, Haixu Long, Hansheng Wu, Zhengbin Long, Haodong Xiang, Rong Shi, Zhuo Cui, Shizhuang Zhang, Gang Qiu, He Wang, Ruifeng Li, Biao Liu, Zhenzhe Sun, Tao Shen · 2026

Existing data generation methods suffer from exploration limits, embodiment gaps, and low signal-to-noise ratios, leading to performance degradation during self-iteration. To address these challenges,…

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Earth & Environmental Sciences Preprint PDF DOI

2024 YR4: Identification of Possible Precoveries in 2016 IPTF Data

Sam Deen, Derek Lam · 2026

2024 YR4 is a 40-100 meter-diameter asteroid and former Torino Scale 3 object which currently has a roughly 4% chance of impacting the Moon on 2032 December 22, an event which recent studies suggest c…

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AI & Data Science Preprint PDF DOI

The AI Research Assistant: Promise, Peril, and a Proof of Concept

Tan Bui-Thanh · 2026

Can artificial intelligence truly contribute to creative mathematical research, or does it merely automate routine calculations while introducing risks of error? We provide empirical evidence through …

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Computer Science Preprint PDF DOI

Taming Scope Extrusion in Gradual Imperative Metaprogramming

Tianyu Chen, Darshal Shetty, Jeremy G. Siek, Chao-Hong Chen, Weixi Ma, Arnaud Venet, Rocky Liu · 2026

Metaprogramming enables the generation of performant code, while gradual typing facilitates the smooth migration from untyped scripts to robust statically typed programs. However, combining these feat…

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Physics Preprint PDF DOI

Where Does Tracing of Cosmic Ray in Real Atmosphere Terminate?

Du-Xin Zheng, Long Chen, Ran Huo · 2026

In backtracing simulations, which are widely employed to determine cosmic-ray particle trajectories in the geomagnetic field, the atmosphere is typically approximated as an artificial sharp boundary a…

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Physics Preprint PDF DOI

SpinWaveToolkit: Python package for (semi-)analytical calculations in the field of spin-wave physics

Jan Klima, Ondrej Wojewoda, Jakub Krcma, Martin Hrton, Dominik Pavelka, Jakub Holobradek, Michal Urbanek · 2026

We present an open-source Python package, SpinWaveToolkit (SWT), for (semi-)analytical modeling of spin-wave dynamics in thin ferromagnetic films and exchange-coupled magnetic bilayers. SWT combines a…

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Earth & Environmental Sciences Preprint PDF DOI

Chain Reactions in Space: Analyzing the Impact of Satellite Collisions and Debris Accumulation

Mark Ballard, Guanqun Song, Ting Zhu · 2025

The exponential increase in artificial satellites, growing from 852 in 2004 to over 9,000 in 2023, has intensified the risk of the Kessler Syndrome: a cascading chain reaction of orbital collisions. T…

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AI & Data Science Preprint PDF DOI

Identifying Features Associated with Bias Against 93 Stigmatized Groups in Language Models and Guardrail Model Safety Mitigation

Anna-Maria Gueorguieva, Aylin Caliskan · 2025

Large language models (LLMs) have been shown to exhibit social bias, however, bias towards non-protected stigmatized identities remain understudied. Furthermore, what social features of stigmas are as…

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Computer Science Preprint PDF DOI

Integrating Computational Methods and AI into Qualitative Studies of Aging and Later Life

Corey M. Abramson · 2025

This chapter demonstrates how computational social science (CSS) tools are extending and expanding research on aging. The depth and context from traditionally qualitative methods such as participant o…

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AI & Data Science Preprint PDF DOI

Do Persona-Infused LLMs Affect Performance in a Strategic Reasoning Game?

John Licato, Stephen Steinle, Brayden Hollis · 2025

Although persona prompting in large language models appears to trigger different styles of generated text, it is unclear whether these translate into measurable behavioral differences, much less wheth…

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Engineering Preprint PDF DOI

A Novel Approach to Tomato Harvesting Using a Hybrid Gripper with Semantic Segmentation and Keypoint Detection

Shahid Ansari, Mahendra Kumar Gohil, Yusuke Maeda, Bishakh Bhattacharya · 2025

This paper presents an autonomous tomato-harvesting system built around a hybrid robotic gripper that combines six soft auxetic fingers with a rigid exoskeleton and a latex basket to achieve gentle, c…

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Physics Preprint PDF DOI

Hill's Lunar Equations, Series, Convergence, Motion of the Perigee

Thomas Ligon · 2025

We investigate Hill's lunar equations, series and the motion of the perigee, and we use computers to go farther than has previously been known, calculating the coefficients of Hill's series up to orde…

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Computer Science Preprint PDF DOI

A principled way to think about AI in education: guidance for action based on goals, models of human learning, and use of technologies

Noah D. Finkelstein · 2025

The rapid emergence of generative artificial intelligence (AI) and related technologies has the potential to dramatically influence higher education, raising questions about the roles of institutions,…

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Computer Science Preprint PDF DOI

Towards Verifiable Federated Unlearning: Framework, Challenges, and The Road Ahead

Thanh Linh Nguyen, Marcela Tuler de Oliveira, An Braeken, Aaron Yi Ding, Quoc-Viet Pham · 2025

Federated unlearning (FUL) enables removing the data influence from the model trained across distributed clients, upholding the right to be forgotten as mandated by privacy regulations. FUL facilitate…

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Physics Preprint PDF DOI

\textit{Ab initio} studies of influence of periodic-direction electric fields on spin lifetime and spin diffusion length and the validation of an \textit{ab initio} matrix-drift-diffusion model

Junqing Xu, Can Liu, Weiwei Chen · 2025

Recently, we developed an \textit{ab initio} approach of spin lifetime (\tau_{s}) and spin diffusion length (l_{s}) in solids [Phys. Rev. Lett. 135, 046705 (2025)], based on a density-matrix master eq…

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AI & Data Science Preprint PDF DOI

LiLAW: Lightweight Learnable Adaptive Weighting to Meta-Learn Sample Difficulty, Improve Noisy Training, Increase Fairness, and Effectively Use Synthetic Data

Abhishek Moturu, Muhammad Muzammil, Anna Goldenberg, Babak Taati · 2025

Training deep neural networks with noise and data heterogeneity is a major challenge. We introduce Lightweight Learnable Adaptive Weighting (LiLAW), a method that dynamically adjusts the loss weight o…

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Earth & Environmental Sciences Preprint PDF DOI

Cislunar Resonant Transport and Heteroclinic Pathways: From 3:1 to 2:1 to L1

Bhanu Kumar, Anjali Rawat, Aaron J. Rosengren, Shane D. Ross · 2025

Understanding the dynamical structure of cislunar space beyond geosynchronous orbit is critical for both lunar exploration and for high-Earth-orbiting trajectories. In this study, we investigate the r…

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