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๐Ÿ” stepan holub ๐Ÿ“‚ Engineering
Showing 145 results for "stepan holub" in Engineering
Engineering Preprint PDF DOI

Advancing automatic speech recognition using feature fusion with self-supervised learning features: A case study on Fearless Steps Apollo corpus

Szu-Jui Chen, John H.L. Hansen ยท 2026

Using self-supervised learning (SSL) models has significantly improved performance for downstream speech tasks, surpassing the capabilities of traditional hand-crafted features. This study investigateโ€ฆ

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Engineering Preprint PDF DOI

Stein Variational Uncertainty-Adaptive Model Predictive Control

Hrishikesh Sathyanarayan, Ian Abraham ยท 2026

We propose a Stein variational distributionally robust controller for nonlinear dynamical systems with latent parametric uncertainty. The method is an alternative to conservative worst-case ambiguity-โ€ฆ

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Engineering Preprint PDF DOI

PinPoint: Monocular Needle Pose Estimation for Robotic Suturing via Stein Variational Newton and Geometric Residuals

Jesse F. d'Almeida, Tanner Watts, Susheela Sharma Stern, James Ferguson, Alan Kuntz, Robert J. Webster III ยท 2026

Reliable estimation of surgical needle 3D position and orientation is essential for autonomous robotic suturing, yet existing methods operate almost exclusively under stereoscopic vision. In monocularโ€ฆ

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Engineering Preprint PDF DOI

Rao-Blackwellized Stein Gradient Descent for Joint State-Parameter Estimation

Milad Banitalebi Dehkordi, Manas Mejari, Dario Piga ยท 2026

We present a filtering framework for online joint state estimation and parameter identification in nonlinear, time-varying systems. The algorithm uses Rao-Blackwellization technique to infer joint staโ€ฆ

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Engineering Preprint PDF DOI

Karhunen-Lo\`{e}ve Expansion for Fluid Antenna Systems: Information-Theoretic Optimal Channel Compression and Outage Analysis

Tuo Wu ยท 2026

Fluid antenna systems (FAS) achieve spatial diversity by dynamically switching among $N$ densely packed ports, but the resulting spatially correlated Rayleigh channels render exact outage analysis intโ€ฆ

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Engineering Preprint PDF DOI

Stein Variational Ergodic Surface Coverage with SE(3) Constraints

Jiayun Li, Yufeng Jin, Sangli Teng, Dejian Gong, Georgia Chalvatzaki ยท 2026

Surface manipulation tasks require robots to generate trajectories that comprehensively cover complex 3D surfaces while maintaining precise end-effector poses. Existing ergodic trajectory optimizationโ€ฆ

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Engineering Preprint PDF DOI

First Steps towards Categorical Algebraic Artificial Chemistry

Joe Pratt-Johns (Edinburgh Napier University), Toby St. Clere Smithe (Kodamai Ltd), Chris Guiver (Edinburgh Napier University), Kevin Hughes (Edinburgh Napier University), Peter Andras (Edinburgh Napier University) ยท 2026

We construct a functor that gives a dynamics to an algebraic model of interacting components. The construction generalises a computational model of Fontana and Buss in the field of artificial life knoโ€ฆ

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Engineering Preprint PDF DOI

SPAN-Nav: Generalized Spatial Awareness for Versatile Vision-Language Navigation

Jiahang Liu, Tianyu Xu, Jiawei Chen, Lu Yue, Jiazhao Zhang, Zhiyong Wang, Minghan Li, Qisheng Zhao, Anqi Li, Qi Su, Zhizheng Zhang, He Wang ยท 2026

Recent embodied navigation approaches leveraging Vision-Language Models (VLMs) demonstrate strong generalization in versatile Vision-Language Navigation (VLN). However, reliable path planning in complโ€ฆ

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Engineering Preprint PDF DOI

STL-SVPIO: Signal Temporal Logic guided Stein Variational Path Integral Optimization

Hongrui Zheng, Zirui Zang, Ahmad Amine, Cristian Ioan Vasile, Rahul Mangharam ยท 2026

Signal Temporal Logic (STL) enables formal specification of complex spatiotemporal constraints for robotic task planning. However, synthesizing long-horizon continuous control trajectories from compleโ€ฆ

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Engineering Preprint PDF DOI

$\pi$-StepNFT: Wider Space Needs Finer Steps in Online RL for Flow-based VLAs

Siting Wang, Xiaofeng Wang, Zheng Zhu, Minnan Pei, Xinyu Cui, Cheng Deng, Jian Zhao, Guan Huang, Haifeng Zhang, Jun Wang ยท 2026

Flow-based vision-language-action (VLA) models excel in embodied control but suffer from intractable likelihoods during multi-step sampling, hindering online reinforcement learning. We propose \textbfโ€ฆ

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Engineering Preprint PDF DOI

Understanding Fire Through Thermal Radiation Fields for Mobile Robots

Anton R. Wagner, Madhan Balaji Rao, Xuesu Xiao, Soren Pirk ยท 2026

Safely moving through environments affected by fire is a critical capability for autonomous mobile robots deployed in disaster response. In this work, we present a novel approach for mobile robots to โ€ฆ

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Engineering Preprint PDF DOI

StepNav: Structured Trajectory Priors for Efficient and Multimodal Visual Navigation

Xubo Luo, Aodi Wu, Haodong Han, Xue Wan, Wei Zhang, Leizheng Shu, Ruisuo Wang ยท 2026

Visual navigation is fundamental to autonomous systems, yet generating reliable trajectories in cluttered and uncertain environments remains a core challenge. Recent generative models promise end-to-eโ€ฆ

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Engineering Preprint PDF DOI

ML-Enhanced Digital Backpropagation for Long-Reach Single-Span Systems

Dario Cellini, Stella Civelli, Marco Secondini ยท 2026

We propose a digital backpropagation method that employs machine-learning-aided joint optimization of dispersion step lengths and nonlinear phase rotation filters within an FFT-based enhanced split-stโ€ฆ

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MIMO Array Calibration in Non-stationary Channels with Residual Surfaces and Slepian Spherical Harmonics

Oliver Kirkpatrick, Santiago Ozafrain, Christopher Gilliam, Beth Jelfs ยท 2026

The fundamental mechanism driving MIMO beamforming is the relative phases of signals departing the transmit array and arriving at the receive array. If a propagation channel affects all transmitted siโ€ฆ

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Engineering Preprint PDF DOI

Fundamental Limits for Near-Field Sensing -- Part II: Wide-Band Systems

Tong Wei, Kumar Vijay Mishra, Bhavani Shankar M.R., Bjorn Ottersten ยท 2025

Near-field sensing with extremely large-scale antenna arrays (ELAAs) in practical 6G systems is expected to operate over broad bandwidths, where delay, Doppler, and spatial effects become tightly coupโ€ฆ

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Engineering Preprint PDF DOI

Fundamental Limits for Near-Field Sensing -- Part I: Narrow-Band Systems

Tong Wei, Kumar Vijay Mishra, Bhavani Shankar M.R., Bjorn Ottersten ยท 2025

Extremely large-scale antenna arrays (ELAAs) envisioned for 6G enable high-resolution sensing. However, the ELAAs worked in extremely high frequency will push operation into the near-field region, wheโ€ฆ

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Engineering Preprint PDF DOI

Channel State Information Preprocessing for CSI-based Physical-Layer Authentication Using Reconciliation

Atsu Kokuvi Angelo Passah, Rodrigo C. de Lamare, Arsenia Chorti ยท 2025

This paper introduces an adaptive preprocessing technique to enhance the accuracy of channel state information-based physical layer authentication (CSI-PLA) alleviating CSI variations and inconsistencโ€ฆ

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Engineering Preprint PDF DOI

PINN vs LSTM: A Comparative Study for Steam Temperature Control in Heat Recovery Steam Generators

Mojtaba Fanoodi, Farzaneh Abdollahi, Mahdi Aliyari Shoorehdeli ยท 2025

This paper introduces a direct comparative study of Physics-Informed Neural Networks (PINNs) and Long Short-Term Memory (LSTM) networks for adaptive steam temperature control in Heat Recovery Steam Geโ€ฆ

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Engineering Preprint PDF DOI

Fault-Tolerant Control of Steam Temperature in HRSG Superheater under Actuator Fault Using a Sliding Mode Observer and PINN

Mojtaba Fanoodi, Farzaneh Abdollahi, Mahdi Aliyari Shoorehdeli ยท 2025

This paper presents a novel fault-tolerant control framework for steam temperature regulation in Heat Recovery Steam Generators (HRSGs) subject to actuator faults. Addressing the critical challenge ofโ€ฆ

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Engineering Preprint PDF DOI

Near Field Tapering with Slepian Window: Balancing the Range Angle Sidelobe Trade off

Ahmed Hussain, Ahmed Sultan, Asmaa Abdallah, Abdulkadir Celik, Ahmed M. Eltawil ยท 2025

Near-field beamforming enables target discrimination in both range (axial) and angle (lateral) dimensions. Elevated sidelobes along either dimension, however, increase susceptibility to interference aโ€ฆ

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