Results 1 to 10 of about 202,798 (258)

Binocular Vision-Based Image Extraction and Feature Analysis of Weld Beads in 316L Wire Arc Additive Manufacturing [PDF]

Micromachines
To address the challenges of low image quality and difficult feature extraction of weld beads caused by the complex dynamics of the molten pool, intense arc light, and spatter interference during wire arc additive manufacturing (WAAM) of 316L stainless ...
Youshu Yue, Qiang Zhu, Huan Li
doaj   +2 more sources

Fault Detection of a Spherical Tank Using a Genetic Algorithm-Based Hybrid Feature Pool and k-Nearest Neighbor Algorithm

Energies, 2019
Fault detection in metallic structures requires a detailed and discriminative feature pool creation mechanism to develop an effective condition monitoring system.
Md Junayed Hasan, Jong-Myon Kim
doaj   +3 more sources

The Transmission of Substrate Features

Journal of Modern Languages, 2020
Theories of the formation of creole syntax have been proposed to explain whether substrates and superstrates influence the resultant creole structures, and if so, what the mechanisms are by which they influence them.
Robert Laub
doaj   +14 more sources

Welding Defect Monitoring Based on Multi-Scale Feature Fusion of Molten Pool Videos

Sensors
Real-time quality monitoring through molten pool images is a critical focus in researching high-quality, intelligent automated welding. However, challenges such as the dynamic nature of the molten pool, changes in camera perspective, and variations in ...
Chenbo Shi, Lei Wang, Changsheng Zhu, Tengyue Han, Xiangyu Zhang, Delin Wang, Chun Zhang   +6 more
doaj   +3 more sources

A Hybrid Feature Pool-Based Emotional Stress State Detection Algorithm Using EEG Signals. [PDF]

Brain Sci, 2019
Hasan MJ, Kim JM.
europepmc   +2 more sources

Three-Dimensional Reconstruction of Welding Pool Surface by Binocular Vision

Chinese Journal of Mechanical Engineering, 2021
Current research of binocular vision systems mainly need to resolve the camera’s intrinsic parameters before the reconstruction of three-dimensional (3D) objects.
Zunan Gu, Ji Chen, Chuansong Wu
doaj   +1 more source

Adaptive Decision Support System for On-Line Multi-Class Learning and Object Detection

Applied Sciences, 2021
A new online multi-class learning algorithm is proposed with three main characteristics. First, in order to make the feature pool fitter for the pattern pool, the adaptive feature pool is proposed to dynamically combine the three general features, Haar ...
Guo-Jhang Hong, Dong-Lin Li, Shreya Pare, Amit Saxena, Mukesh Prasad, Chin-Teng Lin   +5 more
doaj   +1 more source

Characterizing the Core Internal Gene Pool of H9N2 Responsible for Continuous Reassortment With Other Influenza A Viruses

Frontiers in Microbiology, 2021
Reassortment among avian influenza viruses is the main source of novel avian influenza virus subtypes. Studies have shown that the H9N2 virus often donates internal segments to generate novel reassortant avian influenza viruses, acting as a reassortment ...
Haoyi Yang, Haoyi Yang, Mingda Hu, Boqian Wang, Yuan Jin, Xingfei Gong, Xingfei Gong, Long Liang, Junjie Yue, Wei Chen, Hongguang Ren   +10 more
doaj   +1 more source

A Novel Framework for Centrifugal Pump Fault Diagnosis by Selecting Fault Characteristic Coefficients of Walsh Transform and Cosine Linear Discriminant Analysis

IEEE Access, 2021
In this paper, we propose a three-stage lightweight framework for centrifugal pump fault diagnosis. First, the centrifugal pump vibration signatures are fast transformed using a Walsh transform, and Walsh spectra are obtained. To overcome the hefty noise
Zahoor Ahmad, Akhand Rai, Md Junayed Hasan, Cheol Hong Kim, Jong-Myon Kim   +4 more
doaj   +1 more source

Multistage Centrifugal Pump Fault Diagnosis by Selecting Fault Characteristic Modes of Vibration and Using Pearson Linear Discriminant Analysis

IEEE Access, 2020
This paper proposes a three-stage fault diagnosis strategy for multistage centrifugal pumps. First, the proposed method identifies and selects fault characteristic modes of vibration to overcome the substantial noise produced by other unrelated macro ...
Zahoor Ahmad, Alexander E. Prosvirin, Jaeyoung Kim, Jong-Myon Kim   +3 more
doaj   +1 more source