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🔍 douglas ulmer 📂 Engineering
Showing 93 results for "douglas ulmer" in Engineering
Engineering Preprint PDF DOI

\texttt{DR-DAQP}: An Hybrid Operator Splitting and Active-Set Solver for Affine Variational Inequalities

Daniel Arnstrom, Emilio Benenati, Giuseppe Belgioioso · 2026

We present \texttt{DR-DAQP}, an open-source solver for strongly monotone affine variational inequaliries that combines Douglas-Rachford operator splitting with an active-set acceleration strategy. The…

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Engineering Preprint PDF DOI

Early-Terminable Energy-Safe Iterative Coupling for Parallel Simulation of Port-Hamiltonian Systems

Qi Wei, Jianfeng Tao, Hongyu Nie, Wangtao Tan · 2026

Parallel simulation and control of large-scale robotic systems often rely on partitioned time stepping, yet finite-iteration coupling can inject spurious energy by violating power consistency--even wh…

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Engineering Preprint PDF DOI

RoboPocket: Improve Robot Policies Instantly with Your Phone

Junjie Fang, Wendi Chen, Han Xue, Fangyuan Zhou, Tian Le, Yi Wang, Yuting Zhang, Jun Lv, Chuan Wen, Cewu Lu · 2026

Scaling imitation learning is fundamentally constrained by the efficiency of data collection. While handheld interfaces have emerged as a scalable solution for in-the-wild data acquisition, they predo…

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Engineering Preprint PDF DOI

cuNRTO: GPU-Accelerated Nonlinear Robust Trajectory Optimization

Jiawei Wang, Arshiya Taj Abdul, Evangelos A. Theodorou · 2026

Robust trajectory optimization enables autonomous systems to operate safely under uncertainty by computing control policies that satisfy the constraints for all bounded disturbances. However, these pr…

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Engineering Preprint PDF DOI

Digital Twin-Based Cooling System Optimization for Data Center

Shrenik Jadhav, Zheng Liu · 2026

Data center cooling systems consume significant auxiliary energy, yet optimization studies rarely quantify the gap between theoretically optimal and operationally deployable control strategies. This p…

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Engineering Preprint PDF DOI

End-to-End Secure Connection Probability in MultiLayer Networks with Heterogeneous Rician Fading

Hyeonsu Lyu, Yumin Kim, Hyun Jong Yang · 2026

Ensuring physical-layer security in non-terrestrial networks (NTNs) is challenging due to their global coverage and multi-hop relaying across heterogeneous network layers, where the locations and chan…

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Engineering Preprint PDF DOI

UnifSrv: AP Selection for Achieving Uniformly Good Performance of CF-MIMO in Realistic Urban Networks

Yunlu Xiao, Marina Petrova, Ljiljana Simic · 2026

Under the ideal assumption of uniform propagation, cell-free massive MIMO (CF-mMIMO) provides uniformly high throughput over the network by effectively surrounding each user with its serving access po…

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Engineering Preprint PDF DOI

A Generalizable Framework for Building Executable Domain-Specific LLMs under Data Scarcity: Demonstration on Semiconductor TCAD Simulation

Di Wang, Zhenhua Wu, Yu Liu, Kai Chang, Shaohua Wu · 2026

Scientific and engineering verticals often suffer from data scarcity and strict executability requirements: models must generate not only fluent text, but also syntactically valid, tool-compilable scr…

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Engineering Preprint PDF DOI

Learning to accelerate Krasnosel'skii-Mann fixed-point iterations with guarantees

Andrea Martin, Giuseppe Belgioioso · 2026

We introduce a principled learning to optimize (L2O) framework for solving fixed-point problems involving general nonexpansive mappings. Our idea is to deliberately inject summable perturbations into …

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Engineering Preprint PDF DOI

ARCAS: An Augmented Reality Collision Avoidance System with SLAM-Based Tracking for Enhancing VRU Safety

Ahmad Yehia, Jiseop Byeon, Tianyi Wang, Huihai Wang, Yiming Xu, Junfeng Jiao, Christian Claudel · 2025

Vulnerable road users (VRUs) face high collision risks in mixed traffic, yet most existing safety systems prioritize driver or vehicle assistance over direct VRU support. This paper presents ARCAS, a …

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Engineering Preprint PDF DOI

Offset-free Data-Driven Predictive Control for Grid-Connected Power Converters in Weak Grid Faults

Ivo Kraayeveld, Thomas de Jong, Mircea Lazar · 2025

Grid-connected power converters encounter significant stability challenges during weak grid faults, when conventional PI-based controllers exhibit an oscillatory response and poor fault-ride-through p…

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Engineering Preprint PDF DOI

A Generalized Framework for Quadratic Noise Modulation Using Non-Gaussian Distributions

Hadi Zayyani, Mohammad Salman, Felipe A. P. de Figueiredo, Rausley A. A. de Souza · 2025

This letter generalizes noise modulation by introducing two voltage biases and employing non-Gaussian noise distributions, such as Mixture of Gaussian (MoG) and Laplacian, in addition to traditional G…

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Engineering Preprint PDF DOI

Experimental Evaluation of Joint Clock Recovery and Equalization for Sub-Terahertz Links

Pietro Savazzi, Anna Vizziello, Sherif Badran, Josep M. Jornet · 2025

This paper proposes and experimentally evaluates a joint clock recovery (CR) and equalization architecture tailored for high-speed sub-terahertz (sub-THz) wireless communication links. Specifically, a…

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Engineering Preprint PDF DOI

ManiFlow: A General Robot Manipulation Policy via Consistency Flow Training

Ge Yan, Jiyue Zhu, Yuquan Deng, Shiqi Yang, Ri-Zhao Qiu, Xuxin Cheng, Marius Memmel, Ranjay Krishna, Ankit Goyal, Xiaolong Wang, Dieter Fox · 2025

This paper introduces ManiFlow, a visuomotor imitation learning policy for general robot manipulation that generates precise, high-dimensional actions conditioned on diverse visual, language and propr…

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Engineering Preprint PDF DOI

Planning-Query-Guided Model Generation for Model-Based Deformable Object Manipulation

Alex LaGrassa, Zixuan Huang, Dmitry Berenson, Oliver Kroemer · 2025

Efficient planning in high-dimensional spaces, such as those involving deformable objects, requires computationally tractable yet sufficiently expressive dynamics models. This paper introduces a metho…

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Engineering Preprint PDF DOI

Compressive Spectral Imaging in View of Earth Observation Applications

Clement Thomas, Laurent Jacques, Marc Georges · 2025

Earth observation from space is an important scientific and industrial activity that has applications in many sectors. The instruments employed are often large, complex, and expensive. In addition, th…

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Engineering Preprint PDF DOI

Joint Sensing and Bi-Directional Communication with Dynamic TDD Enabled Cell-Free MIMO

Anubhab Chowdhury, Sai Subramanyam Thoota, Erik G. Larsson · 2025

This paper studies integrated sensing and communication (ISAC) with dynamic time division duplex (DTDD) cell-free (CF) massive multiple-input multiple-output~(mMIMO) systems. DTDD enables the CF mMIMO…

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Engineering Preprint PDF DOI

TransUNet-GradCAM: A Hybrid Transformer-U-Net with Self-Attention and Explainable Visualizations for Foot Ulcer Segmentation

Akwasi Asare, Mary Sagoe, Justice Williams Asare, Stephen Edward Moore · 2025

Automated segmentation of diabetic foot ulcers (DFUs) plays a critical role in clinical diagnosis, therapeutic planning, and longitudinal wound monitoring. However, this task remains challenging due t…

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Engineering Preprint PDF DOI

Green One-Bit Quantized Precoding in Cell-Free Massive MIMO

Salih Gumusbuga, Ozan Alp Topal, Ozlem Tugfe Demir · 2025

Cell-free massive MIMO (multiple-input multiple-output) is expected to be one of the key technologies in sixth-generation (6G) and beyond wireless communications, offering enhanced spectral efficiency…

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Engineering Preprint PDF DOI

Quadrature Over-the-Air-Computing for Multimodal Dual-Stream Signal Processing

Hyeon Seok Rou, Kengo Ando, Giuseppe Thadeu Freitas de Abreu, David Gonzalez G · 2025

We propose a novel quadrature over-the-air computing (Q-OTAC) framework that enables the simultaneously computation of two independent functions and/or data stream within a single transmission. In con…

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