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Computer Science Preprint PDF DOI

Distributed Santa Claus via Global Rounding

Tijn de Vos, Leo Wennmann, Malte Baumecker, Yannic Maus, Florian Schager · 2026

In this paper, we consider the Santa Claus problem in the CONGEST model. This NP-hard problem can be modeled as a bipartite graph of children and gifts where an edge indicates that a child desires a g…

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Physics Preprint PDF DOI

Compartment Modelling of Multiphase Reactors using Unsupervised Clustering

Michael Mitterlindner, Maximilian Graber, Regina Kratzer, Markus Reichhartinger, Stefan Radl · 2026

Detailed Computational Fluid Dynamics (CFD) simulations are too computationally expensive for the real-time control and design optimization of multiphase flow reactors. To address these limitations, w…

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Computer Science Preprint PDF DOI

Taking a Bite Out of the Forbidden Fruit: Characterizing Third-Party Iranian iOS App Stores

Amirhossein Khanlari, Amir Rahmati · 2026

Due to U.S. sanctions and strict internet censorship, Iranian iOS users are barred from accessing the Apple App Store and developer services. In response, despite violating Apple's developer terms, a …

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Mathematics Preprint PDF DOI

On the geometry of circumcentric directions of cones

Yunier Bello-Cruz · 2026

Behling, Bello-Cruz, Lara-Urdaneta, Oviedo, and Santos showed that the circumcentric direction $d$ of a finitely generated polyhedral cone $\KK\subset\RR^n$ admits an inscribed Euclidean ball of radiu…

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AI & Data Science Preprint PDF DOI

CBARA: Covariate-Balanced-and-Adjusted Response-Adaptive Randomization

Hengjia Fang, Wei Ma · 2026

We propose the covariate-balanced-and-adjusted response-adaptive randomization (CBARA) procedure for adaptive design in clinical trials, which integrates the complementary strengths of covariate-adjus…

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Engineering Preprint PDF DOI

Performance Analysis of HAPS-RIS-Assisted MIMO Systems Under Phase-Dependent Amplitude Response Using Saddle Point Approximation

Tayfun Yilmaz, Haci Ilhan, Ali Gorcin, Halim Yanikomeroglu · 2026

This letter proposes a novel mathematical framework for the statistical characterization of reconfigurable intelligent surface (RIS)-mounted high-altitude platform station (HAPS)-assisted MIMO systems…

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AI & Data Science Preprint PDF DOI

Leverage Laws: A Per-Task Framework for Human-Agent Collaboration

Stan Loosmore · 2026

We propose a per-task leverage ratio for human-agent collaboration: human work displaced by an agent, divided by the human time required to specify the task, resolve mid-run interrupts, and review the…

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AI & Data Science Preprint PDF DOI

Sentiment and Emotion Classification of Indonesian E-Commerce Reviews via Multi-Task BiLSTM and AutoML Benchmarking

Hermawan Manurung, Ibrahim Al-Kahfi, Ahmad Rizqi, Martin Clinton Tosima Manullang · 2026

Indonesian marketplace reviews mix standard vocabulary with slang, regional loanwords, numeric shorthands, and emoji, making lexicon-based sentiment tools unreliable in practice. This paper describes …

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Computer Science Preprint PDF DOI

Minimum Temporal Spanners in Happy Graphs

Arnaud Casteigts, Hendrik Molter, Meirav Zehavi · 2026

Temporal graphs have edge sets that change over discrete time steps. Such graphs are temporally connected (TC) if all pairs of vertices can reach each other using paths that traverse the edges in a ti…

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Computer Science Preprint PDF DOI

ARCHES: Adaptive Real-Time Switching of AI Models for the RAN

Neagin Neasamoni Santhi, Davide Villa, Michele Polese, Salvatore D'Oro, Yunseong Lee, Koichiro Furueda, Tommaso Melodia · 2026

Artificial Intelligence (AI) has become a powerful tool for model-free Radio Access Network (RAN) signal processing and optimization. However, designing a single model that generalizes across all radi…

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Physics Preprint PDF DOI

LARA: Validation-Driven Agentic Supercomputer Workflows for Atomistic Modeling

William Dawson, Louis Beal, Yoann Cure, Giuseppe Fisicaro, Dorian Rolland, Luigi Genovese · 2026

Large language models (LLMs) and agentic systems have recently demonstrated potential for automating scientific workflows, including atomistic simulations. However, their deployment in high-performanc…

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Mathematics Preprint PDF DOI

Malliavin calculus for signatures with applications to finance

Eduardo Abi Jaber, Clement Rey, Dimitri Sotnikov · 2026

Malliavin calculus is a powerful and general framework for the analysis of square-integrable random variables, but it often suffers from a lack of tractability and explicit representations. To address…

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Mathematics Preprint PDF DOI

Curve Closest to Sphere

Thando Nkomozake · 2026

We propose a solution to the tenth of Professor Clark Kimberling's unsolved problems found on https://faculty.evansville.edu/ck6/integer/unsolved.html. We are required to find the parametric equations…

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Mathematics Preprint PDF DOI

Composition operators and Rational Inner Functions on the bidisc: A geometric approach

Athanasios Beslikas · 2026

We study composition operators acting on the weighted Bergman spaces on the bidisc, i.e. $C_{\Phi}:A^2_{\beta}(\mathbb{D}^2)\to A^2_{\beta}(\mathbb{D}^2)$ where $\Phi$ is induced by rational inner fun…

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Physics Preprint PDF DOI

Closing the Loop: Deploying Auto-Generating Digital Twins for Particle Accelerators

A. D. Brynes, M. King, K. R. L. Baker, R. Banerjee, R. Clarke, D. J. Dunning, J. K. Jones, M. Leputa, A. E. Pollard, M. Romanovschi, M. Shaw, N. Ziyan · 2026

The simulation of a physical system in a virtual replica, known as a digital twin, is a useful way to interrogate the system non-invasively, providing the ability to perform predictive maintenance and…

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Engineering Preprint PDF DOI

A Novel Piecewise Atmospheric Attenuation Model for Free Space Optical Links in Vertical Heterogeneous Networks

Eylem Erdogan, Mohammed Elamassie, Ibrahim Altunbas, Gunes Karabulut Kurt, Murat Uysal, Halim Yanikomeroglu · 2026

Free-space optical (FSO) communication is emerging as a key backhaul technology for next-generation vertical heterogeneous networks (VHetNets), whose architecture spans satellites, high-altitude platf…

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Engineering Preprint PDF DOI

Geometry-Aware Networking for Low-Altitude Economy: Movable Antennas in Space-Air-Ground Integrated Systems

Heyou Liu, Bang Huang, Mohamed-Slim Alouini · 2026

Space--air--ground integrated networks (SAGINs) are emerging as a key foundation for future non-terrestrial networks (NTNs) and low-altitude economy services. However, their performance is increasingl…

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Computer Science Preprint PDF DOI

Refresher Training through Quiz App for capacity building of Community Healthcare Workers or Anganwadi Workers in India

Arka Majhi, Satish B. Agnihotri, Aparajita Mondal · 2026

High and persistent child malnutrition levels with tardy reduction, seen in successive health surveys, continue to be a matter of concern in India, drawing attention to the need to revamp the four-dec…

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Engineering Preprint PDF DOI

A Novel 3D Antenna Architecture with Spatial Resource Allocation for Massive MIMO HAPS

Rozita Shafie, Omid Abbasi, Halim Yanikomeroglu, Mohammad Javad Omidi · 2026

Spatial correlation poses a significant challenge in massive multiple-input multiple-output (MIMO) high-altitude platform station (HAPS) systems. The inherent spatial correlation among antenna element…

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Computer Science Preprint PDF DOI

React-ing to Grace Hopper 200: Five Open-Weights Coding Models, One React Native App, One GH200, One Weekend

Alex Potanin · 2026

We evaluate five state-of-the-art open-weights coding language models -- Kimi-K2.5 (at Q3 and Q4 quantizations), GLM-5.1, Qwen3-Coder-480B, and DeepSeek-V3.2 -- on a single multi-file React Native app…

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