Results 11 to 20 of about 44,886 (257)

Correction and Fitting Civil Aviation Flight Data EGT Based on RPM: Polynomial Least Squares Analysis

open access: yesApplied Sciences, 2022
There are different missing flight data due to various reasons in the process of acquisition and storage, especially in general aviation, which cause inconvenience for flight data analysis.
Nongtian Chen   +3 more
doaj   +1 more source

Study on residual deformation prediction of goaf based on residual modified GM(1,1)model

open access: yesMeikuang Anquan, 2023
In order to improve the prediction accuracy of the GM(1,1)model for its application in residual deformation prediction of goaf, the residual modification GM(1,1) model was constructed based on the gray GM(1,1) model.
XUE Yong’an, JI Zhe, ZHANG Wenzhi
doaj   +1 more source

Stability Criterion of Subsynchronous Oscillation of Direct Drive Permanent Magnet Synchronous Generator Based on Impedance Polynomial Fitting

open access: yes发电技术, 2020
Impedance analysis is the leading method of solving the stability issues of grid-connected renewable energy generation systems. Taking the grid-connected system of direct drive permanent magnet synchronous generator (D-PMSG) as an example, the ...
Yongjun YU   +4 more
doaj   +1 more source

A high order derivation method for distribution network transient data [PDF]

open access: yesE3S Web of Conferences, 2021
Nowadays, high-order data needs to be processed quickly and accurately by various algorithms in distribution networks. It is difficult to ensure the accuracy of calculation both in low-order and high-order cases, due to the theoretical limitations of ...
Xiao Bo   +4 more
doaj   +1 more source

Local polynomial estimation of heteroscedasticity in a multivariate linear regression model and its applications in economics. [PDF]

open access: yesPLoS ONE, 2012
Multivariate local polynomial fitting is applied to the multivariate linear heteroscedastic regression model. Firstly, the local polynomial fitting is applied to estimate heteroscedastic function, then the coefficients of regression model are obtained by
Liyun Su   +3 more
doaj   +1 more source

Lossy Compression using Adaptive Polynomial Image Encoding

open access: yesAdvances in Electrical and Computer Engineering, 2021
In this paper, an efficient lossy compression approach using adaptive-block polynomial curve-fitting encoding is proposed. The main idea of polynomial curve fitting is to reduce the number of data elements in an image block to a few coefficients.
OTHMAN, S.   +3 more
doaj   +1 more source

Polynomial fit of interferograms [PDF]

open access: yesApplied Optics, 1982
Polynomial fit of interferograms is analyzed quantitatively. The errors from polynomial fit, such as fit error, digitization error, roundoff error, and finite sampling error, are explained. The advantage of using orthonormal polynomials are presented.
openaire   +2 more sources

Measurement precision enhancement of surface plasmon resonance based angular scanning detection using deep learning

open access: yesScientific Reports, 2022
Angular scanning-based surface plasmon resonance measurement has been utilized in label-free sensing applications. However, the measurement accuracy and precision of the surface plasmon resonance measurements rely on an accurate measurement of the ...
Kitsada Thadson   +4 more
doaj   +1 more source

4D Track Prediction of Aircraft Based on Improved Sliding Window Polynomial Fitting Method

open access: yesHangkong gongcheng jinzhan, 2019
Accurate track prediction is the basis for improving the early warning capability for air threat situation of anti-collision, for this reason, an improved sliding window polynomial fitting track prediction method is proposed to intrusion aircraft.
Zhang Jianxiang   +3 more
doaj   +1 more source

HOPS: A Fast Algorithm for Segmenting Piecewise Polynomials of Arbitrary Orders

open access: yesIEEE Access, 2021
The segmentation of piecewise polynomial signals arises in a variety of scientific and engineering fields. When a signal is modeled as a piecewise polynomial, the key then becomes the detection of breakpoints followed by curve fitting and parameter ...
Junbo Duan, Qing Wang, Yu-Ping Wang
doaj   +1 more source

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