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๐Ÿ” c. ferreira ๐Ÿ“‚ Engineering
Showing 1832 results for "c. ferreira" in Engineering
Engineering Preprint PDF DOI

Unfitted Multi-Level hp Refinement for Localized and Moving Solution Features

Jan Niklas Schmake, Martin Ruess ยท 2026

Localized features such as singularities, sharp gradients, discontinuities, and moving sources require adaptive finite element discretizations. Conventional refinement strategies introduce significantโ€ฆ

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Engineering Preprint PDF DOI

Reduced-Order Data Assimilation for Thermospheric Density Using Physics-informed SINDyc Models

Sriram Narayanan, Daniele Sicoli, Piyush Mehta ยท 2026

Accurate estimation of thermospheric mass density is a prerequisite for orbit prediction and space situational awareness, where the upper atmosphere responds nonlinearly to solar and geomagnetic forciโ€ฆ

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Engineering Preprint PDF DOI

OpenPodcar2: a robust, ROS2 vehicle for self-driving research

Rakshit Soni, Chris Waltham, Md Umar Ibrahim, Mark Crampton, Charles Fox ยท 2026

OpenPodcar2 is a robust, ROS2-interfaced, low-cost, open source hardware and software, autonomous vehicle platform based on an off-the-shelf, hard-canopy, mobility scooter donor vehicle. It is a modifโ€ฆ

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Engineering Preprint PDF DOI

Generalizable Friction Coefficient Estimation via Material Embedding and Proxy Interaction Modeling

Zhendong Wang, Huamin Wang ยท 2026

Accurately estimating friction coefficients between arbitrary material pairs is critical for robotics, digital fabrication, and physics-based simulation, but exhaustive pairwise testing scales quadratโ€ฆ

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Engineering Preprint PDF DOI

Extracting Exact Lie Derivatives Without Backpropagation: A Dual Compiler for Neural Control Barrier Functions

Mohammadreza Kamaldar ยท 2026

Deploying neural-network control barrier functions (CBFs) on embedded hardware requires evaluating the barrier value and its Lie derivatives along the system vector fields at every control cycle. The โ€ฆ

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Engineering Preprint PDF DOI

Useful nonrobust features are ubiquitous in biomedical images

Coenraad Mouton, Randle Rabe, Niklas C. Koser, Nicolai Krekiehn, Christopher Hansen, Jan-Bernd Hovener, Claus-C. Gluer ยท 2026

We study whether deep networks for medical imaging learn useful nonrobust features - predictive input patterns that are not human interpretable and highly susceptible to small adversarial perturbationโ€ฆ

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Engineering Preprint PDF DOI

Monolithically Integrated VO$_2$ Mott Oscillators for Energy-Efficient Spiking Neurons

Fabio Bersano, Cyrille Masserey, Vanessa Conti, Andrea Iaconeta, Niccolo' Martinolli, Ehsan Ansari, Anna Varini, Igor Stolichnov, Adrian Mihai Ionescu ยท 2026

Brain-inspired non-Boolean computing offers intrinsic error tolerance and parallelism, but its practical deployment is limited by the lack of compact, energy-efficient spiking hardware compatible withโ€ฆ

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Engineering Preprint PDF DOI

Ufil: A Unified Framework for Infrastructure-based Localization

Simon Schafer, Lucas Hegerath, Marius Molz, Massimo Marcon, Bassam Alrifaee ยท 2026

Infrastructure-based localization enhances road safety and traffic management by providing state estimates of road users. Development is hindered by fragmented, application-specific stacks that tightlโ€ฆ

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Engineering Preprint PDF DOI

Designing Active Operation in Low-Voltage Distribution Grids: Requirements, Interfaces and Roadmap

Eric Tonges, Andrea Schoen, Frank Marten, Marco Pau, Denis Mende ยท 2026

This paper outlines a pathway towards active operation of lowvoltage distribution grids. In these grids, the growing deployment of distributed generation, controllable demand and storage, together witโ€ฆ

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Engineering Preprint PDF DOI

Controlling the \'{C}uk Converter using Piecewise Linear Lyapunov Functions

Aleksandra Lekic, Nikola Petrovic, Dusan Stipanovic ยท 2026

In this paper we design a switching control law for the \'Cuk converter in the continuous conduction mode using piecewise linear Lyapunov functions. These Lyapunov functions can be constructed using dโ€ฆ

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Engineering Preprint PDF DOI

SL(C)AMma: Simultaneous Localisation, (Calibration) and Mapping With a Magnetometer Array

Thomas Edridge, Manon Kok ยท 2026

Indoor localisation techniques suffer from attenuated Global Navigation Satellite System (GNSS) signals and from the accumulation of unbounded drift by integration of proprioceptive sensors. Magnetic โ€ฆ

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Engineering Preprint PDF DOI

Graph-Guided Adaptive Channel Elimination for KV Cache Compression

Enwei Tong, Yao Zhu, Yuanchao Bai, Kai Wang, Xianming Liu, Xiangyang Ji ยท 2026

Large Language Models have revolutionized natural language processing, achieving unprecedented success across a vast range of tasks. However, their practical application in long-context scenarios is sโ€ฆ

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Engineering Preprint PDF DOI

Experimental Characterization Data for Battery Modules with Parallel-Connected Cells across Diverse Module-Level State of Health and Cell-to-Cell Variations

Qinan Zhou, Daniel Stephens, Jing Sun ยท 2026

This experimental dataset presents both module-level and cell-level characterization data for lithium-ion battery modules composed of three parallel-connected inhomogeneous cells across a wide range oโ€ฆ

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Engineering Preprint PDF DOI

Scaling and Analytical Approximation of Porous Electrode Theory for Reaction-limited Batteries

Shakul Pathak, Martin Z. Bazant ยท 2026

Porous electrode theory (PET) provides essential insights into electrochemical states, but its computational complexity hinders real-time control and obscures scaling relations. To bridge the gap betwโ€ฆ

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Engineering Preprint PDF DOI

NeuroMesh: A Unified Neural Inference Framework for Decentralized Multi-Robot Collaboration

Yang Zhou, Yash Shetye, Long Quang, Devon Super, Jesse Milzman, Manohari Goarin, Aditya Azad, Devang Sunil Dhake, Jeffery Mao, Carlos Nieto-Granda, Giuseppe Loianno ยท 2026

Deploying learned multi-robot models on heterogeneous robots remains challenging due to hardware heterogeneity, communication constraints, and the lack of a unified execution stack. This paper presentโ€ฆ

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Engineering Preprint PDF DOI

Foundation Models in Robotics: A Comprehensive Review of Methods, Models, Datasets, Challenges and Future Research Directions

Aggelos Psiris, Vasileios Argyriou, Evangelos K. Markakis, Panagiotis Sarigiannidis, Efstratios Gavves, Kostas Bekris, Arash Ajoudani adn Georgios Th. Papadopoulos ยท 2026

Over the recent years, the field of robotics has been undergoing a transformative paradigm shift from fixed, single-task, domain-specific solutions towards adaptive, multi-function, general-purpose agโ€ฆ

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Engineering Preprint PDF DOI

A Nonasymptotic Theory of Gain-Dependent Error Dynamics in Behavior Cloning

Junghoon Seo ยท 2026

Behavior cloning (BC) policies on position-controlled robots inherit the closed-loop response of the underlying PD controller, yet the effect of controller gains on BC failure lacks a nonasymptotic thโ€ฆ

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Engineering Preprint PDF DOI

CART: Context-Aware Terrain Adaptation using Temporal Sequence Selection for Legged Robots

Kartikeya Singh, Youngjin Kim, Yash Turkar, Karthik Dantu ยท 2026

Animals in nature combine multiple modalities, such as sight and feel, to perceive terrain and develop an understanding of how to walk on uneven terrain in a stable manner. Similarly, legged robots neโ€ฆ

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Engineering Preprint PDF DOI

On-Orbit Space AI: Federated, Multi-Agent, and Collaborative Algorithms for Satellite Constellations

Ziyang Wang ยท 2026

Satellite constellations are transforming space systems from isolated spacecraft into networked, software-defined platforms capable of on-orbit perception, decision making, and adaptation. Yet much ofโ€ฆ

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Engineering Preprint PDF DOI

Actuation space reduction to facilitate insightful shape matching in a novel reconfigurable tendon driven continuum manipulator

Sabyasachi Dash, John Golden, Girish Krishnan ยท 2026

In tendon driven continuum manipulators (TDCMs), reconfiguring the tendon routing enables tailored spatial deformation of the backbone. This work presents a design in which tendons can be rerouted eitโ€ฆ

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