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AI & Data Science Preprint PDF DOI

Point Cloud Registration for Fusion between SPECT MPI and CTA Images

Ni Yao, Xiangyu Liu, Shaojie Tang, Danyang Sun, Chuang Han, Yanting Li, Jiaofen Nan, Chengyang Li, Fubao Zhu, Chen Zhao, Zhihui Xu, Weihua Zhou · 2026

Clinical fusion of Single Photon Emission Computed Tomography Myocardial Perfusion Imaging (SPECT MPI) and Computed Tomography Angiography (CTA) remains limited by cross-modality misregistration and r…

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Physics Preprint PDF DOI

The Metal Content of Resolved Galaxies

Lidia N. Makarova, Denis G. Purytin, R. Brent Tully, Gagandeep S. Anand · 2026

We present a homogeneous metallicity analysis of old stellar populations in Local Volume (LV) galaxies using data from the CMDs/TRGB catalog of the Extragalactic Distance Database (EDD; http://edd.ifa…

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Engineering Preprint PDF DOI

Importance of Aggregated DER Installed Capacity in Distribution Networks

Alexandre M. V. Gouveia, Md. Umar Hashmi, Reinhilde D'hulst, Dirk Van Hertem · 2026

The increasing penetration of Distributed Energy Resources (DERs), particularly electric vehicles, heat pumps, and photovoltaic systems, is fundamentally changing power flows in Low-Voltage (LV) distr…

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Physics Preprint PDF DOI

Correlation between Ultra-High-Energy Neutrino KM3-230213A and Gamma-Ray Bursts

Ruiqi Wang, Bo-Qiang Ma · 2026

The KM3NeT Collaboration reported the detection of a neutrino, designated as KM3-230213A, with a reconstructed energy peaking at 220 PeV and equatorial coordinates (J2000) of RA=$94.3\degree$ and Dec=…

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Mathematics Preprint PDF DOI

Quantum Query Complexity of the Hyperoctahedral Group

Ji Ho Bae · 2026

We determine the quantum query complexity of oracle identification on the hyperoctahedral group $B_N = \{\pm 1\}^N \rtimes S_N$ with respect to the natural representation: $Q_{LV}(B_N) = 2(N-1)$ for a…

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Physics Preprint PDF DOI

Strong gravitational lensing and Quasiperiodic oscillations as a probe for an electrically charged Lorentz symmetry-violating black hole

Sohan Kumar Jha · 2026

This study examines the combined effect of electric charge and Lorentz symmetry breaking (LSB) on the observables of strong gravitational lensing (SGL) and the dynamics of quasiperiodic oscillations (…

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Physics Preprint PDF DOI

Cosmological Constraints from GW-FRB Associations without Redshift Measurements for LIGO-Virgo and Cosmic Explorer

Jiaming Zhuge, Marios Kalomenopoulos, Carl-Johan Haster, Bing Zhang · 2026

The potential association between gravitational waves (GWs) and fast radio bursts (FRBs) offers a unique multi-messenger probe for cosmology. In this paper, we develop a redshift-independent framework…

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Medicine & Health Preprint PDF DOI

Renal Blood Flow Quantification During Standard Myocardial Perfusion Imaging with Rubidium-82 Positron Emission Tomography

Hamid Abdollahi, Robert Doot, Raul Porto, Anthony Young, Abdel K Tahari, Raymond Townsend, Jacob Dubroff, Arman Rahmim, Paco E. Bravo · 2026

Background: Renal blood flow (RBF) is an important marker of kidney health, but noninvasive assessment is not routinely used in clinical imaging. We evaluated the feasibility and physiologic validity …

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Physics Preprint PDF DOI

Rotating black hole shadows in metric-affine bumblebee gravity

Jose R. Nascimento, Ana R. M. Oliveira, Albert Yu. Petrov, Paulo J. Porfirio, Amilcar R. Queiroz · 2026

In this work, we investigate the structure of black hole shadows in the bumblebee gravity model formulated within the metric-affine framework, which incorporates spontaneous Lorentz symmetry breaking …

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AI & Data Science Preprint PDF DOI

Follow Your Heart: Landmark-Guided Transducer Pose Scoring for Point-of-Care Echocardiography

Zaiyang Guo, Jessie N. Dong, Filippos Bellos, Jilei Hao, Emily J. MacKay, Trevor Chan, Shir Goldfinger, Sethu Reddy, Steven Vance, Jason J. Corso, Alison M. Pouch · 2026

Point-of-care transthoracic echocardiography (TTE) makes it possible to assess a patient's cardiac function in almost any setting. A critical step in the TTE exam is acquisition of the apical 4-chambe…

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AI & Data Science Preprint PDF DOI

CoAuthorAI: A Human in the Loop System For Scientific Book Writing

Yangjie Tian, Xungang Gu, Yun Zhao, Jiale Yang, Lin Yang, Ning Li, He Zhang, Ruohua Xu, Hua Wang, Kewen Liao, Ming Liu · 2026

Large language models (LLMs) are increasingly used in scientific writing but struggle with book-length tasks, often producing inconsistent structure and unreliable citations. We introduce CoAuthorAI, …

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AI & Data Science Preprint PDF DOI

Domain-Guided YOLO26 with Composite BCE-Dice-Lov\'{a}sz Loss for Multi-Class Fetal Head Ultrasound Segmentation

M. Fazri Nizar · 2026

Segmenting fetal head structures from prenatal ultrasound remains a practical bottleneck in obstetric imaging. The current state-of-the-art baseline, proposed alongside the published dataset, adapts t…

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AI & Data Science Preprint PDF DOI

VISTA: Validation-Guided Integration of Spatial and Temporal Foundation Models with Anatomical Decoding for Rare-Pathology VCE Event Detection

Bo-Cheng Qiu, Yu-Fan Lin, Yu-Zhe Pien, Chia-Ming Lee, Fu-En Yang, Yu-Chiang Frank Wang, Chih-Chung Hsu · 2026

Capsule endoscopy event detection is challenging because diagnostically relevant findings are sparse, visually heterogeneous, and embedded in long, noisy video streams, while evaluation is performed a…

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AI & Data Science Preprint PDF DOI

Pretraining and Benchmarking Modern Encoders for Latvian

Arturs Znotins · 2026

Encoder-only transformers remain essential for practical NLP tasks. While recent advances in multilingual models have improved cross-lingual capabilities, low-resource languages such as Latvian remain…

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Physics Preprint PDF DOI

Measurement of the $t$-channel single top quark cross section in proton-proton collisions at $\sqrt{s}$ = 5.02 TeV

CMS Collaboration · 2026

The single top quark $t$-channel production cross section is measured in proton-proton collisions at the CERN LHC at $\sqrt{s}$ = 5.02 TeV, using data recorded with the CMS detector in 2017, correspon…

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Engineering Preprint PDF DOI

Risk-Based Dynamic Thermal Rating in Distribution Transformers via Probabilistic Forecasting

Scott Angus, Jethro Browell, David Greenwood, Matthew Deakin · 2026

Low voltage (LV) distribution transformers face accelerating demand growth while replacement lead times and costs continue to rise, making improved utilisation of existing assets essential. Static and…

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Physics Preprint PDF DOI

Toda-like Hamiltonian as a probe for quantized prey-predator dynamics

Alex E. Bernardini, Orfeu Bertolami · 2026

Phase-space features of a reduced version of the Toda-like Hamiltonian, $\mathcal{H}(x,\,k)$, written in a form constrained by the condition $\partial^2 \mathcal{H} / \partial x \partial k = 0$, with …

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Physics Preprint PDF DOI

Vacuum Cherenkov Radiation for Nonminimal Isotropic Lorentz Violation

Albert Yu. Petrov, Marco Schreck, Alexandre R. Vieira · 2026

In this work, we study the effects of vacuum Cherenkov radiation caused by nonminimal dimension-5 Lorentz-violating (LV) operators in the fermion sector. Explicitly, we focus on two independent isotro…

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Physics Preprint PDF DOI

Classical investigations in a CPT-even Lorentz-violating model and their implications for the Compton effect

E. Neres Junior, J. C. C. Felipe, A. P. Baeta Scarpelli, A. Yu. Petrov, J. A. Helayel-Neto · 2026

In this work, we investigate some aspects of the Maxwell electrodynamics with the additive Lorentz-violating (LV) CPT-even term. For this model, we derive the energy and momentum conservation laws, hi…

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Engineering Preprint PDF DOI

Boreas Road Trip: A Multi-Sensor Autonomous Driving Dataset on Challenging Roads

Daniil Lisus, Katya M. Papais, Cedric Le Gentil, Elliot Preston-Krebs, Andrew Lambert, Keith Y.K. Leung, Timothy D. Barfoot · 2026

The Boreas Road Trip (Boreas-RT) dataset extends the multi-season Boreas dataset to new and diverse locations that pose challenges for modern autonomous driving algorithms. Boreas-RT comprises 60 sequ…

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