Results 71 to 80 of about 504,597 (395)
Advanced Engineering Materials, EarlyView.This article provides a comprehensive overview of fundamentals and recent advances of transparent thin‐film surface acoustic wave technologies on glass substrates for monitoring and prevention/elimination of fog, ice, and frost. Fogging, icing, or frosting on optical lenses, optics/photonics, windshields, vehicle/airplane windows, and solar panel ...
Hui Ling Ong +11 more
wiley +1 more source
IEEE Access, 2019 In this paper, a soft-switching proximate time-optimal control (PTOC) is proposed based on the model-compensation extended state observer (ESO) and Takagi-Sugeno fuzzy switching, for the fast set-heading tracking of underactuated autonomous underwater ...
An Li +5 more
doaj +1 more source
Underwater breadcrumb localization
OCEANS 2023 - Limerick, 2023 In most cases, underwater localization implies a fusion of two or more sensors, usually inertial and acoustic ones. Acoustic localization demands the deployment of the acoustic baseline if precise measurement is needed. Using a fixed predeployed baseline limits the accuracy of location estimates outside certain operating areas defined by the baseline ...
Slošić, Vladimir +2 more
openaire +1 more source
Advanced Engineering Materials, EarlyView.This study explores geometry‐driven phase evolution in gyroid shell metamaterials made via laser powder bed fusion of 17‐4 precipitation hardened stainless steel. Locally hardened regions develop along the primary loading paths in the structure, which finite element analysis and geometric considerations link to enhanced gyroid strength.
Julia T. Pürstl +8 more
wiley +1 more source
Journal of Marine Science and Engineering, 2021 Visual observations of the marine biodiversity can be difficult in specific areas for different reasons, including weather conditions or a lack of observers. In such conditions, passive acoustics represents a potential alternative approach. The objective
Paul Nguyen Hong Duc +6 more
doaj +1 more source
Hematology as Related to Diving Characteristics of Elaphe obsoleta, Nerodia erythrogaster, Nerodia Fasciata and Nerodia rhombifera [PDF]
, 1979 The diving capabilities of Nerodia erythrogaster flavigaster and Nerodia fasciata confluens were investigated and the results were compared with similar studies on Nerodia rhombifera rhombifera and Elaphe obsoleta obsoleta (Baeyens et al., 1978).
Baeyens, Dennis A. +2 more
core +2 more sources
Advanced Engineering Materials, EarlyView.Laser surface texturing significantly improves the corrosion resistance and mechanical strength of 3D‐printed iron polylactic acid (Ir‐PLA) for marine applications. Optimal laser parameters reduce corrosion by 80% and enhance tensile strength by 25% and ductility by 15%.
Mohammad Rezayat +6 more
wiley +1 more source
Real-Time Underwater StereoFusion
Sensors, 2018 Many current and future applications of underwater robotics require real-time sensing and interpretation of the environment. As the vast majority of robots are equipped with cameras, computer vision is playing an increasingly important role it this field.
Matija Rossi +5 more
doaj +1 more source
3DupIC: An Underwater Scan Matching Method for Three-Dimensional Sonar Registration
Sensors, 2022 This work presents a six degrees of freedom probabilistic scan matching method for registration of 3D underwater sonar scans. Unlike previous works, where local submaps are built to overcome measurement sparsity, our solution develops scan matching ...
António Ferreira +4 more
doaj +1 more source
Visual-Quality-Driven Learning for Underwater Vision Enhancement
, 2018 The image processing community has witnessed remarkable advances in enhancing and restoring images. Nevertheless, restoring the visual quality of underwater images remains a great challenge.
Amaral, Henrique Grandinetti Barbosa +3 more
core +1 more source