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Showing 1644 results for "german vidal" in Engineering · Preprint
Engineering Preprint PDF DOI

The False Resonance: A Critical Examination of Emotion Embedding Similarity for Speech Generation Evaluation

Yun-Shao Tsai, Yi-Cheng Lin, Huang-Cheng Chou, Tzu-Wen Hsu, Yun-Man Hsu, Chun Wei Chen, Shrikanth Narayanan, Hung-yi Lee · 2026

Objective metrics for emotional expressiveness are vital for speech generation, particularly in expressive synthesis and voice conversion requiring emotional prosody transfer. To quantify this, the fi…

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Engineering Preprint PDF DOI

Time-Localized Parametric Decomposition of Respiratory Airflow for Sub-Breath Analysis

Victoria Ribeiro Rodrigues, Paul W. Davenport, Nicholas J. Napoli · 2026

Respiratory airflow signals provide critical insight into breathing mechanics, yet conventional analysis methods remain limited in their ability to characterize the internal structure of individual br…

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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 · 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 wit…

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Engineering Preprint PDF DOI

Output Feedback Backup Control Barrier Functions: Safety Guarantees Under Input Bounds and State Estimation Error

David E. J. van Wijk, Tamas G. Molnar, Samuel Coogan, Manoranjan Majji, Aaron D. Ames, Joel W. Burdick · 2026

Guaranteeing the safety of controllers is vital for real-world applications, but is markedly difficult when the states are not perfectly known and when the control inputs are bounded. Backup control b…

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Engineering Preprint PDF DOI

Design, Modelling and Experimental Evaluation of a Tendon-driven Wrist Abduction-Adduction Mechanism for an upper limb exoskeleton

Juwairiya S. Khan, Mostafa Mohammadi, John Rasmussen, Lotte N.S. Andreasen Struijk · 2026

Wrist exoskeletons play a vital role in rehabilitation and assistive applications, yet conventional actuation mechanisms such as electric motors or pneumatics often introduce undesirable weight, frict…

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Engineering Preprint PDF DOI

FARM: Foundational Aerial Radio Map for Intelligent Low-Altitude Networking

Shijian Gao, Jiahui Liang, Yifeng Yuan, Wenlihan Lu, Guobin Shen, Liuqing Yang · 2026

Precise aerial radio environment characterization is vital for low-altitude planning. However, existing datasets and estimation methods lack the high-resolution granularity required for complex aerial…

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Engineering Preprint PDF DOI

DigiForest: Digital Analytics and Robotics for Sustainable Forestry

Marco Camurri, Enrico Tomelleri, Matias Mattamala, Sebastian Barbas Laina, Martin Jacquet, Jens Behley, Sunni Kanta Prasad Kushwaha, Fang Nan, Nived Chebrolu, Leonard Frei{ss}muth, Marvin Chayton Harms, Meher V.R. Malladi, Fan Yang, Jonas Frey, Cesar Cadena, Marco Hutter, Janine Schweier, Kostas Alexis, Cyrill Stachniss, Maurice Fallon, Stefan Leutenegger · 2026

Covering one third of Earth's land surface, forests are vital to global biodiversity, climate regulation, and human well-being. In Europe, forests and woodlands reach approximately 40% of land area, a…

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Engineering Preprint PDF DOI

CBAM-Enhanced DenseNet121 for Multi-Class Chest X-Ray Classification with Grad-CAM Explainability

Utsho Kumar Dey · 2026

Pneumonia remains a leading cause of childhood mortality worldwide, with a heavy burden in low-resource settings such as Bangladesh where radiologist availability is limited. Most existing deep learni…

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Engineering Preprint PDF DOI

Periodic OFDMA: A Low-PAPR Multiple Access Scheme for Uplink Communications in 5G and Beyond

Gokce Hacioglu, Serkan Vela · 2026

Multiple access techniques are vital for 5G and beyond. While Orthogonal Frequency Division Multiple Access (OFDMA) is standard, its high peak-to-average power ratio (PAPR) reduces energy efficiency i…

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Engineering Preprint PDF DOI

Simulation-Driven Evolutionary Motion Parameterization for Contact-Rich Granular Scooping with a Soft Conical Robotic Hand

Yongliang Wang, Cristian C. Beltran-Hernandez, Tomoya Takahashi, Masashi Hamaya · 2026

Tool-based scooping is vital in robot-assisted tasks, enabling interaction with objects of varying sizes, shapes, and material states. Recent studies have shown that flexible, reconfigurable soft robo…

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Engineering Preprint PDF DOI

Quasi-stationary Slice Detection-Based Robust Respiration Rate Estimation under Large-scale Random Body Movement

Chendong Xu, Shuai Yao, Haoying Bao, Chiyuan Ma, Qisong Wu · 2026

Radar-based non-contact respiration rate (RR) measurement has become increasingly popular due to its convenience, non-intrusiveness, and low cost. However, it is still quite challenging to accurately …

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Engineering Preprint PDF DOI

AnyUser: Translating Sketched User Intent into Domestic Robots

Songyuan Yang, Huibin Tan, Kailun Yang, Wenjing Yang, Shaowu Yang · 2026

We introduce AnyUser, a unified robotic instruction system for intuitive domestic task instruction via free-form sketches on camera images, optionally with language. AnyUser interprets multimodal inpu…

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Engineering Preprint PDF DOI

Safe and Near-Optimal Gate Control: A Case Study from the Danish West Coast

Martin Kristjansen (Aalborg University), Kim Guldstrand Larsen (Aalborg University), Marius Mikucionis (Aalborg University), Christian Schilling (Aalborg University) · 2026

Ringkoebing Fjord is an inland water basin on the Danish west coast separated from the North Sea by a set of gates used to control the amount of water entering and leaving the fjord. Currently, human …

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Engineering Preprint PDF DOI

Assessing Maintenance of Medium Voltage Cable Networks Under Time-Varying Loading

Jochen Lorenz Cremer · 2026

The electrification and ongoing energy transition lead to systematic changes in electricity loading and variability in power systems. Distribution systems were designed for regular operating patterns,…

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Engineering Preprint PDF DOI

Deep Neural Network Based Roadwork Detection for Autonomous Driving

Sebastian Wullrich, Nicolai Steinke, Daniel Goehring · 2026

Road construction sites create major challenges for both autonomous vehicles and human drivers due to their highly dynamic and heterogeneous nature. This paper presents a real-time system that detects…

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Engineering Preprint PDF DOI

Empirical and Statistical Characterisation of 28 GHz mmWave Propagation in Office Environments

Ayodeji Bolanle Balogun, Sokipriala Jonah · 2026

Millimeter wave (mmWave) technology at 28 GHz is vital for beyond-5G systems, but indoor deployment remains challenging due to limited statistical evidence on propagation. This study investigates path…

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Engineering Preprint PDF DOI

A comparison of Markov Chain Monte Carlo algorithms for Bayesian inference of constitutive models

Aricia Rinkens, Rodrigo L. S. Silva, Erik Quaeghebeur, Nick Jaensson, Clemens Verhoosel · 2026

Employing Bayesian inference to calibrate constitutive model parameters has grown substantially in recent years. Among the available techniques, Markov Chain Monte Carlo (MCMC) sampling remains one of…

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Engineering Preprint PDF DOI

An Integrated Soft Robotic System for Measuring Vital Signs in Search and Rescue Environments

Jorge Francisco Garcia-Samartin, Christyan Cruz Ulloa, Andres Sanchez-Silva, Jaime del Cerro, Antonio Barrientos · 2026

Robots are frequently utilized in search-and-rescue operations. In recent years, significant advancements have been made in the field of victim assessment. However, there are still open issues regardi…

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Engineering Preprint PDF DOI

From Energy Transition Pathways to Measurement Requirements: A Scenario-Based Study of Low-Voltage Grids

Nane Zimmermann, Lukas P. Wagner, Luca von Ronn, Florian Strobel, Paul Huttmann, Felix Gehlhoff · 2026

Increasing penetration of electric vehicles, heat pumps, and rooftop photovoltaics is creating thermal and voltage stress in low-voltage distribution grids. This work links three German energy transit…

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Engineering Preprint PDF DOI

Alertness Optimization for Shift Workers Using a Physiology-based Mathematical Model

Zidi Tao, A. Agung Julius, John T Wen · 2026

Sleep is vital for maintaining cognitive function, facilitating metabolic waste removal, and supporting memory consolidation. However, modern societal demands, particularly shift work, often disrupt n…

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