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🔍 chris j mitchell 📂 Engineering
Showing 227 results for "chris j mitchell" in Engineering
Engineering Preprint PDF DOI

The role of physical models in the validation and calibration of numerical models -- The example of the Lilleb{\ae}lt Bridge

Paula Apollonia Wunderlich, Gledson Rodrigo Tondo, Guido Morgenthal · 2026

With the rapid advancement of computer technologies enabling fast calculations of complex structures, numerical methods have become a central tool in engineering sciences, while physical models have i…

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Engineering Preprint PDF DOI

Defining the Magnetization State of LCF Magnets: From Material Properties to Motor-Level Metrics

Taha El Hajji, Aleksandr Nadkin, Stefan Skoog, Lars Sjoberg, Kristoffer Nilsson, Anthony C. Morcos · 2026

Variable flux memory motors, which employ Low Coercive Force (LCF) magnets, achieve extended high-efficiency operation through controllable magnetization states. To address the need for a unified appr…

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Engineering Preprint PDF DOI

Learning ultra-compressible hyperelasticity with splines: Constitutive asymmetries and non-unique representations

Miguel Angel Moreno-Mateos, Simon Wiesheier, Paul Steinmann, Ellen Kuhl · 2026

Highly compressible solids, such as foams, exhibit complex responses, including pronounced tension-compression asymmetry. Capturing such behaviors within unified hyperelastic frameworks remains challe…

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Engineering Preprint PDF DOI

A Case Study on Energy-Efficient Edge AI Crack Segmentation

Matthias Tschope, Mohamed Moursi, Vladimir Rybalkin, Bo Zhou, Norbert Wehn, Paul Lukowicz · 2026

Crack segmentation on edge devices can support continuous infrastructure monitoring and maintenance and thereby help to preserve public safety. Furthermore, autonomous infrastructure monitoring by usi…

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Engineering Preprint PDF DOI

Jutted BMOCZ for Non-Coherent OFDM

Parker Huggins, Alphan Sahin · 2026

In this work, we propose a zero constellation for binary modulation on conjugate-reciprocal zeros (BMOCZ), called jutted BMOCZ (J-BMOCZ), and study its application to non-coherent orthogonal frequency…

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Engineering Preprint PDF DOI

A Monolithic Computational Homogenization Framework for Nearly Incompressible Magnetoelastic Composites

L. River Spencer, Manuel K. Rausch, Chad M. Landis, Jan N. Fuhg · 2026

Magneto-active elastomers exhibit large, nonlinear deformations under combined mechanical loading and magnetic fields, and their effective behavior is strongly governed by microstructural heterogeneit…

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Engineering Preprint PDF DOI

4D Fresnel Space-Time Modulation for Near-Field ELAA: Kinematic Multiplexing and O(N log N) Precoding at Sub-THz Frequencies

Rahul Gulia · 2026

Extremely Large Antenna Arrays (ELAA) operating at sub-terahertz frequencies introduce a regime where near-field Fresnel propagation and high-mobility carrier Doppler interact simultaneously, creating…

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Engineering Preprint PDF DOI

A Single-Fiber Optical Frequency Domain Reflectometry (OFDR)-Based Shape Sensing of Concentric Tube Steerable Drilling Robots

Yash Kulkarni, Mobina Tavangarifard, Daniyal Maroufi, Mohsen Khadem, Justin E. Bird, Jeffrey H. Siewerdsen, Farshid Alambeigi · 2026

This paper introduces a novel shape-sensing approach for Concentric Tube Steerable Drilling Robots (CT-SDRs) based on Optical Frequency Domain Reflectometry (OFDR). Unlike traditional FBG-based method…

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Engineering Preprint PDF DOI

Near-Field NLOS Localization via Position-Unknown HRIS:From Self-Localization to Target Positioning

Hua Chen, Linke Yu, Tuo Wu, Maged Elkashlan, Naofal Al-Dhahir, Merouane Debbah, K. C. Ho · 2026

Current reconfigurable intelligent surface (RIS)-aided near-field (NF) localization methods assume the RIS position is known a priori, and it has limited their practical applicability. This paper appl…

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Engineering Preprint PDF DOI

BER Analysis and Optimization for Continuous RIS-Enabled NOMA

Mahmoud AlaaEldin, Amy S. Inwood, Peter J. Smith, Michail Matthaiou · 2026

This letter investigates a novel uplink (UL) system that integrates power-domain non-orthogonal multiple access (PD-NOMA) with a continuous reconfigurable intelligent surface (CRIS). We analyze the ef…

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Engineering Preprint PDF DOI

Set-Prediction-Based J-Peak Detection for Pillow-Based Ballistocardiography

Shengwei Guo, Guobing Sun · 2026

J-peak detection in ballistocardiography (BCG) is a key component of unobtrusive heart rate monitoring during sleep. Most existing approaches formulate this task as a dense time-point segmentation p…

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Engineering Preprint PDF DOI

SilentWear: an Ultra-Low Power Wearable System for EMG-based Silent Speech Recognition

Giusy Spacone, Sebastian Frey, Giovanni Pollo, Alessio Burrello, Daniele Jahier Pagliari, Victor Kartsch, Andrea Cossettini, Luca Benini · 2026

Detecting speech from biosignals is gaining increasing attention due to the potential to develop human-computer interfaces that are noise-robust, privacy-preserving, and scalable for both clinical app…

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Engineering Preprint PDF DOI

HARU-Net: Hybrid Attention Residual U-Net for Edge-Preserving Denoising in Cone-Beam Computed Tomography

Khuram Naveed, Ruben Pauwels · 2026

Cone-beam computed tomography (CBCT) is widely used in dental and maxillofacial imaging, but low-dose acquisition introduces strong, spatially varying noise that degrades soft-tissue visibility and ob…

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Engineering Preprint PDF DOI

Twenty-five years of J-DSP Online Labs for Signal Processing Classes and Workforce Development Programs

Andreas Spanias · 2026

This paper presents the history of the online simulation program Java-DSP (J-DSP) and the most recent function development and deployment. J-DSP was created to support online laboratories in DSP class…

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Engineering Preprint PDF DOI

Sub Specie Aeternitatis: Fourier Transforms from the Theory of Heat to Musical Signals

Victor Lazzarini · 2026

J. B. Fourier in his \emph{Th\'{e}orie Analytique de la Chaleur} of 1822 introduced, amongst other things, two ideas that have made a fundamental impact in fields as diverse as Mathematical Physics, E…

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Engineering Preprint PDF DOI

From Data $H(j\omega_i)$ to Balanced Truncation Family: A Projection-based Non-intrusive Approach

Umair Zulfiqar · 2026

This paper presents data-driven implementations of balanced truncation and several of its generalizations that rely exclusively on transfer function samples on the imaginary axis. Rather than implicit…

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Engineering Preprint PDF DOI

WST-X Series: Wavelet Scattering Transform for Interpretable Speech Deepfake Detection

Xi Xuan, Davide Carbone, Wenxin Zhang, Ruchi Pandey, Tomi H. Kinnunen · 2026

In this work, we focus on front-end design for speech deepfake detectors, the component that determines the discriminative acoustic cues provided to the classifier. Existing approaches are primarily c…

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Engineering Preprint PDF DOI

Deep Reinforcement Learning for Hybrid RIS Assisted MIMO Communications

Phuong Nam Tran, Nhan Thanh Nguyen, Markku Juntti · 2026

Hybrid reconfigurable intelligent surfaces (HRIS) enhance wireless systems by combining passive reflection with active signal amplification. However, jointly optimizing the transmit beamforming with t…

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Engineering Preprint PDF DOI

Towards Efficient Image Deblurring for Edge Deployment

Srinivas Miriyala, Sowmya Vajrala, Sravanth Kodavanti · 2026

Image deblurring is a critical stage in mobile image signal processing pipelines, where the ability to restore fine structures and textures must be balanced with real-time constraints on edge devices.…

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Engineering Preprint PDF DOI

Reinforcement Learning for Follow-the-Leader Robotic Endoscopic Navigation via Synthetic Data

Sicong Gao, Chen Qian, Laurence Xian, Liao Wu, Maurice Pagnucco, Yang Song · 2026

Autonomous navigation is crucial for both medical and industrial endoscopic robots, enabling safe and efficient exploration of narrow tubular environments without continuous human intervention, where …

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