⚡ electrical engineering

Automatic Modeling Workpiece Map using Camera and Projector for Automatic Workpiece Alignment Aid of CNC Machining

This paper proposes and validates an automatic workpiece alignment system for CNC machining that utilizes Gray-code structured light scanning and 3D modeling to reconstruct workpiece geometry and determine coordinate offsets with high precision, thereby reducing reliance on skilled operators and minimizing human error.

Wen-Yang Chang, Jia-Wei Hsu, Zheng-Xun Huang, Hsuan-Jui Chang2026-08-19
⚡ electrical engineering

Algorithmic Synthesis and Parametric Modeling of Dual Bio-Inspired Airfoils Featuring Leading-Edge Tubercles and Trailing-Edge Serrations

This paper presents a reproducible, parametric modeling framework using Grasshopper and Python to generate three-dimensional airfoils with bio-inspired leading-edge tubercles and trailing-edge serrations, detailing the governing equations, source code, and workflow for aerodynamic optimization and CFD preparation.

MD. Rokibul Hasan2026-08-19
⚡ electrical engineering

Linear or Bilinear: A Criterion for Koopman Rollouts in Sampling-Based Predictive Control

This paper establishes a criterion for selecting between linear and bilinear Koopman models in MPPI control, demonstrating that bilinear lifts are structurally necessary for configuration-dependent input gains and serve as a robust default that outperforms linear counterparts on velocity-driven systems while maintaining efficiency for force-driven platforms.

Kangmin Lee, Sanghyun Kim2026-08-19
⚡ electrical engineering

Comparative Thermal Performance of Old Sana'a Tower-House Archetypes: A Moisture-Coupled Reduced-Order Simulation Study

This study employs a moisture-coupled reduced-order simulation framework to demonstrate that the three-story compact tower archetype in Old Sana'a offers superior thermal resilience and adaptive comfort compared to taller variants, identifying window-to-wall ratio as the primary overheating driver and advocating for reversible, heritage-sensitive interventions.

Ali MOHAMMED Alkebsci2026-08-19
⚡ electrical engineering

A Systematic Review of IoT and Wireless Sensor Networks for Energy Conservation in Sustainable Smart Cities

This paper presents a systematic literature review analyzing how IoT and Wireless Sensor Networks, integrated with advanced techniques like AI and edge computing, optimize energy conservation in smart cities while identifying current challenges and future research directions for sustainable development.

M. Vamsikrishna, S Satheesh Kumar, M. Ramnath, Ajith Sundaram, Veeraswamy Ammisetty, Gayathri Gayathri Parasa2026-08-19
⚡ electrical engineering

ULSONIK™: Acoustic Cavitation-Driven Hydrogen Degassing in Molten Aluminium Alloys — Effects on Porosity and Mechanical Properties

This study demonstrates that high-intensity ultrasonic treatment of molten AA-series aluminium alloys effectively removes dissolved hydrogen through acoustic cavitation, significantly reducing porosity and refining grain structure to achieve defect-free 6-micron foil production while eliminating the need for environmentally harmful degassing gases.

Kedar N. Bhojak¹, Naresh Jain¹, Saroj Kumar Nayak², Bijoy Kumar Satpathy², Nilesh Bhatt2026-08-18
⚡ electrical engineering

Physical Consistency of Axial-Dispersion Boundary Conditions and Tanks-in- Series Models for Multi-Compartment Wastewater Treatment Reactors

This study demonstrates that axial-dispersion models with specific boundary conditions (BC I and BC III) provide superior physical consistency and predictive accuracy for residence time distribution in multi-compartment wastewater reactors compared to the tanks-in-series model, though all reduced-order formulations fail to capture short-circuiting phenomena driven by local flow pathways.

Mehdi Hassanvandjamadi, Soroosh Sharifi, Bruño Fraga2026-08-18
⚡ electrical engineering

Optimization and Field Evaluation of Multi-Cluster Hydraulic Fracturing Using Surface L-Shaped Well in Soft Low-Permeability Coal Seam

This study demonstrates that optimizing injection rate, sand-to-fluid ratio, and cluster spacing for multi-cluster hydraulic fracturing in a soft, low-permeability coal seam using a surface L-shaped well significantly enhances fracture uniformity and gas drainage efficiency, as validated by simulations and field monitoring at Yongchun Coal Mine.

Haonan Zhang, Xionggang Xie, Huaiqian Liu, Peng Zhang, Shujin Zhang2026-08-18