Results 21 to 30 of about 213,329 (165)

Constant false alarm rate detection of pipeline leakage based on acoustic sensors

open access: yesScientific Reports, 2023
During the transportation of oil and gas pipelines, there are many potential factors that can lead to pipeline leakage with serious consequences, making automatic and real-time pipeline leakage detection urgent. In response to the inconvenience of manual
Guorui An, Zuheng Huang, Yanbing Li
doaj   +1 more source

An improved automatic detection model for egg defection based on YOLOv5

open access: yesShipin yu jixie, 2022
Objective: To solve the problems of low detection efficiency and poor accuracy of existing automatic detection methods for egg defect images. Methods: Based on the egg detection system, an improved YOLOv5 automatic detection model was proposed. Added the
YAO Xue-feng, LI Chao
doaj   +1 more source

Inner properties of seasonal topside ionospheric structures determined via DEMETER ion perturbations

open access: yes地球与行星物理论评
In this investigation, 117718 ionospheric perturbations with a space size t = 20–300 s, but without a limit on amplitude (A), were automatically searched globally via software using ion density data measured by the Detection of Electromagnetic Emissions ...
Mei Li, Hongzhu Yan, Yongxian Zhang
doaj   +1 more source

An Efficient Algorithm for Automatic Peak Detection in Noisy Periodic and Quasi-Periodic Signals

open access: yesAlgorithms, 2012
We present a new method for automatic detection of peaks in noisy periodic and quasi-periodic signals. The new method, called automatic multiscale-based peak detection (AMPD), is based on the calculation and analysis of the local maxima scalogram, a ...
Felix Scholkmann, Martin Wolf, Jens Boss
doaj   +1 more source

Topside Ionospheric Structures Determined via Automatically Detected DEMETER Ion Perturbations during a Geomagnetically Quiet Period

open access: yesGeosciences
In this study, 117,718 ionospheric perturbations, with a space size (t) of 20–300 s but no amplitude (A) limit, were automatically globally searched via software utilizing ion density data measured by the DEMETER satellite for over 6 years. The influence
Mei Li, Hongzhu Yan, Yongxian Zhang
doaj   +1 more source

THE AUTOMATION OF THE PROCESS OF LAND AREA CHANGE DETECTION IN PERMANENT MONITORING SYSTEMS [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2015
A new automation process for change detection of land area is proposed. The method is based on the use of multitemporal satellite images and their histograms. The proposed discrete representation of land area in small image fragments makes it possible to
L. V. Areshkina   +2 more
doaj   +1 more source

Automatic detection of discordant outliers via the Ueda’s method [PDF]

open access: yesJournal of Statistical Distributions and Applications, 2015
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Fernando Marmolejo Ramos   +2 more
openaire   +4 more sources

Automatically Detected CSES Ionospheric Precursors Before Part of the Strong Aftershocks of the 23 January 2024 Wushi MS 7.1 Earthquake in Northwest China

open access: yesRemote Sensing
Earthquake prediction is still a large challenge worldwide so far. In this paper, an automatic detection method was put into service immediately after the Wushi MS 7.1 earthquake on 23 January 2024 to weekly detect possible CSES (China Seismo ...
Mei Li, Hongzhu Yan, Tianyu Liu
doaj   +1 more source

Research and application of assembly test platform for outdoor installation protection

open access: yesThe Journal of Engineering, 2019
Standardised and miniaturised outdoor installation protection is the development trend of relay protection in AC transmission power grid, which has the advantages of saving investment, promoting reliability, and reducing on-site workload.
Shuang Song   +4 more
doaj   +1 more source

A Coronal Loop Automatic Detection Method

open access: yesSymmetry
Coronal loops are bright, filamentary structures formed by thermal plasmas constrained by the sun’s magnetic field. Studying coronal loops provides insights into magnetic fields and their role in coronal heating processes. We propose a new automatic coronal loop detection method to optimize the problem of existing algorithms in detecting low-intensity ...
Zhenhong Shang, Ziqi He, Runxin Li
openaire   +1 more source

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