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🔍 rodney lessard 📂 Engineering
Showing 378 results for "rodney lessard" in Engineering
Engineering Preprint PDF DOI

A Total Lagrangian Finite Element Framework for Multibody Dynamics: Part II -- GPU Implementation and Numerical Experiments

Zhenhao Zhou, Ruochun Zhang, Ganesh Arivoli, Dan Negrut · 2026

We present the numerical methods and GPU-accelerated implementation underlying a Total Lagrangian finite element framework for finite-deformation flexible multibody dynamics, introduced in the compani…

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Engineering Preprint PDF DOI

GPU-Accelerated Continuous-Time Successive Convexification for Contact-Implicit Legged Locomotion

Samuel C. Buckner, Purnanand Elango · 2026

Contact-implicit trajectory optimization (CITO) enables the automatic discovery of contact sequences, but most methods rely on fine time discretization to capture all contact events accurately, which …

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Engineering Preprint PDF DOI

DSVTLA: Deep Swin Vision Transformer-Based Transfer Learning Architecture for Multi-Type Cancer Histopathological Cancer Image Classification

Muazzem Hussain Khan, Tasdid Hasnain, Md. Jamil khan, Ruhul Amin, Md. Shamim Reza, Md. Al Mehedi Hasan, Md Ashad Alam · 2026

In this study, we proposed a deep Swin-Vision Transformer-based transfer learning architecture for robust multi-cancer histopathological image classification. The proposed framework integrates a hiera…

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Engineering Preprint PDF DOI

Adaptive Differential Privacy for Federated Medical Image Segmentation Across Diverse Modalities

Puja Saha, Eranga Ukwatta · 2026

Large volumes of medical data remain underutilized because centralizing distributed data is often infeasible due to strict privacy regulations and institutional constraints. In addition, models traine…

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Engineering Preprint PDF DOI

Modeling isotropic polyconvex hyperelasticity by neural networks -- sufficient and necessary criteria for compressible and incompressible materials

Gian-Luca Geuken, Patrick Kurzeja, David Wiedemann, Martin Zlatic, Marko Cana{dj}ija, Jorn Mosler · 2026

This work investigates different sufficient and necessary criteria for hyperelastic, isotropic polyconvex material models, focusing on neural network implementations for compressible and incompressibl…

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Engineering Preprint PDF DOI

How Short Is Too Short? Power Analysis for BIC-Based Changepoint Detection in Ecological Monitorin

Ang A. Li · 2026

Changepoint detection is increasingly applied to ecological time series, yet statistical power at the short series lengths typical of monitoring (10-50 observations) is rarely assessed. We present a s…

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Engineering Preprint PDF DOI

SutureAgent: Learning Surgical Trajectories via Goal-conditioned Offline RL in Pixel Space

Huanrong Liu, Chunlin Tian, Tongyu Jia, Tailai Zhou, Qin Liu, Yu Gao, Yutong Ban, Yun Gu, Guy Rosman, Xin Ma, Qingbiao Li · 2026

Predicting surgical needle trajectories from endoscopic video is critical for robot-assisted suturing, enabling anticipatory planning, real-time guidance, and safer motion execution. Existing methods …

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Engineering Preprint PDF DOI

From Scanning Guidelines to Action: A Robotic Ultrasound Agent with LLM-Based Reasoning

Yuan Bi, Yiping Zhou, Pei Liu, Feng Li, Zhongliang Jiang, Nassir Navab · 2026

Robotic ultrasound offers advantages over free-hand scanning, including improved reproducibility and reduced operator dependency. In clinical practice, US acquisition relies heavily on the sonographer…

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Engineering Preprint PDF DOI

RODEO: RObotic DEcentralized Organization

Milan Groshev, Eduardo Castello Ferrer · 2026

Robots are improving their autonomy with minimal human supervision. However, auditable actions, transparent decision processes, and new human-robot interaction models are still missing requirements to…

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Engineering Preprint PDF DOI

Physics Informed Neural Network using Finite Difference Method

Kart Leong Lim, Rahul Dutta, Mihai Rotaru · 2026

In recent engineering applications using deep learning, physics-informed neural network (PINN) is a new development as it can exploit the underlying physics of engineering systems. The novelty of PINN…

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Engineering Preprint PDF DOI

Extracting Patterns of Chemical Information from Differential Mobility Spectrometry Measurements under Varying Conditions of Humidity and Temperature

Philipp Muller, Gary A. Eiceman, Anton Rauhameri, Anton Kontunen, Antti Roine, Niku Oksala, Antti Vehkaoja, Maiju Lepomaki · 2026

Differential Mobility Spectrometry (DMS), also known as Field Asymmetric Ion Mobility Spectrometry, is a rapid and affordable technology for extracting information from gas phase samples containing co…

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Engineering Preprint PDF DOI

A Total Lagrangian Finite Element Framework for Multibody Dynamics: Part I -- Formulation

Zhenhao Zhou, Ganesh Arivoli, Dan Negrut · 2026

We present a Total Lagrangian finite element framework for finite-deformation multibody dynamics. The framework combines a compact kinematic representation, a deformation-gradient-based formulation, a…

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Engineering Preprint PDF DOI

Towards Autonomous Robotic Kidney Ultrasound: Spatial-Efficient Volumetric Imaging via Template Guided Optimal Pivoting

Xihan Ma, Haichong Zhang · 2026

Medical ultrasound (US) imaging is a frontline tool for the diagnosis of kidney diseases. However, traditional freehand imaging procedure suffers from inconsistent, operator-dependent outcomes, lack o…

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Engineering Preprint PDF DOI

Automated Assessment of Kidney Ureteroscopy Exploration for Training

Fangjie Li, Nicholas Kavoussi, Charan Mohan, Matthieu Chabanas, Jie Ying Wu · 2026

Purpose: Kidney ureteroscopic navigation is challenging with a steep learning curve. However, current clinical training has major deficiencies, as it requires one-on-one feedback from experts and occu…

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Engineering Preprint PDF DOI

Engineering-Oriented Symbolic Regression: LLMs as Physics Agents for Discovery of Simulation-Ready Constitutive Laws

Yue Wu, Tianhao Su, Mingchuan Zhao, Shunbo Hu, Deng Pan · 2026

The discovery of constitutive laws for complex materials has historically faced a dichotomy between high-fidelity data-driven approaches, which demand prohibitive full-field experimental data, and tra…

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Engineering Preprint PDF DOI

Analyzing Model Misspecification in Quantitative MRI: Application to Perfusion ASL

Jiachen Wang, Jon Tamir, Adam Bush · 2026

Quantitative MRI (qMRI) involves parameter estimation governed by an explicit signal model. However, these models are often confounded and difficult to validate in vivo. A model is misspecified when t…

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Engineering Preprint PDF DOI

Deep learning Based Correction Algorithms for 3D Medical Reconstruction in Computed Tomography and Macroscopic Imaging

Tomasz Les, Tomasz Markiewicz, Malgorzata Lorent, Miroslaw Dziekiewicz, Krzysztof Siwek · 2026

This paper introduces a hybrid two-stage registration framework for reconstructing three-dimensional (3D) kidney anatomy from macroscopic slices, using CT-derived models as the geometric reference sta…

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Engineering Preprint PDF DOI

Self-Supervised Ultrasound Representation Learning for Renal Anomaly Prediction in Prenatal Imaging

Youssef Megahed, Inok Lee, Robin Ducharme, Kevin Dick, Adrian D. C. Chan, Steven Hawken, Mark C. Walker · 2025

Prenatal ultrasound is the cornerstone for detecting congenital anomalies of the kidneys and urinary tract, but diagnosis is limited by operator dependence and suboptimal imaging conditions. We sought…

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Engineering Preprint PDF DOI

Making Robots Play by the Rules: The ROS 2 CLIPS-Executive

Tarik Viehmann, Daniel Swoboda, Samridhi Kalra, Himanshu Grover, Gerhard Lakemeyer · 2025

CLIPS is a rule-based programming language for building knowledge-driven applications, well suited for the complex task of coordinating autonomous robots. Inspired by the CLIPS-Executive originally de…

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Engineering Preprint PDF DOI

Tumor-anchored deep feature random forests for out-of-distribution detection in lung cancer segmentation

Aneesh Rangnekar, Harini Veeraraghavan · 2025

Accurate segmentation of lung tumors from 3D computed tomography (CT) scans is essential for automated treatment planning and response assessment. Despite self-supervised pretraining on numerous datas…

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