Results 21 to 30 of about 20,826 (139)

A Nonlinear Prognostic Model Based on the Wiener Process with Three Sources of Uncertainty

open access: yesShock and Vibration, 2021
Estimation of the remaining useful life (RUL) is an important component of prognostics and health management (PHM). The accuracy of the RUL estimation for complex systems is mainly affected by three sources of uncertainty, i.e., the temporal uncertainty,
Huifang Niu   +4 more
doaj   +1 more source

On some dynamical features of the complete Moran model for neutral evolution in the presence of mutations [PDF]

open access: yesOpen Communications in Nonlinear Mathematical Physics
We present a version of the classical Moran model, in which mutations are taken into account; the possibility of mutations was introduced by Moran in his seminal paper, but it is more often overlooked in discussing the Moran model.
Giuseppe Gaeta
doaj   +1 more source

A Digital-Twin Framework for Predicting the Remaining Useful Life of Piezoelectric Vibration Sensors with Sensitivity Degradation Modeling

open access: yesSensors, 2023
Piezoelectric vibration sensors (PVSs) are widely applied to vibration detection in aerospace engines due to their small size, high sensitivity, and high-temperature resistance.
Chengcheng Fu, Cheng Gao, Weifang Zhang
doaj   +1 more source

Weapon Sets of the Kushulevsky III Burial Ground of the Pyanobor Archaeological Culture [PDF]

open access: yesГуманитарный вектор, 2021
One of the important directions in the study of military affairs of the Pyanobor culture is the study of weapon sets. A set of weapons means armaments in a specific closed complex.
Vsevolod I. Lyasovich
doaj   +1 more source

The R Package threg to Implement Threshold Regression Models

open access: yesJournal of Statistical Software, 2015
This paper introduces the R package threg, which implements the estimation procedure of a threshold regression model, which is based on the first-hitting-time of a boundary by the sample path of a Wiener diffusion process.
Tao Xiao   +3 more
doaj   +1 more source

Network Analysis Using Markov Chain Applied to Wildlife Habitat Selection

open access: yesDiversity, 2022
In the present study, behavioral states for habitat selection are examined using a discrete-time Markov chain (DTMC) combined with a network model with wildlife movement data.
Thakur Dhakal   +7 more
doaj   +1 more source

Degradation Modeling Based on Wiener Process Considering Multi-Source Heterogeneity

open access: yesIEEE Access, 2020
Degradation modeling using heterogeneous degradation data of a system population is critical for prognostics and health management. The heterogeneity may result from the inherent differences in the degrading systems and measuring instruments, as well as ...
Meng Xiao   +3 more
doaj   +1 more source

Optimal Maintenance Decision Based on Remaining Useful Lifetime Prediction for the Equipment Subject to Imperfect Maintenance

open access: yesIEEE Access, 2020
Focusing on the fact that the existing research on optimal maintenance decision for remaining useful lifetime (RUL) prediction and imperfect maintenance has low accuracy of RUL prediction and rationality of decision results, an optimal maintenance ...
Yunxiang Chen, Zezhou Wang, Zhongyi Cai
doaj   +1 more source

A consensus layer V pyramidal neuron can sustain interpulse-interval coding. [PDF]

open access: yesPLoS ONE, 2017
In terms of a single neuron's long-distance communication, interpulse intervals (IPIs) are an attractive alternative to rate and binary codes. As a proxy for an IPI, a neuron's time-to-spike can be found in the biophysical and experimental intracellular ...
Chandan Singh, William B Levy
doaj   +1 more source

Development of a Numerical Simulation Model to Support the Design of a Ship–Satellite Communication System for Autonomous Marine Navigation

open access: yesRemote Sensing, 2023
In recent years, the concept of autonomous navigation systems has gained substantial significance, with the potential to change the traditional concept of autonomous navigation.
Federico Del Mondo   +4 more
doaj   +1 more source

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