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3661
Dynamic Investigation and Resonant Frequency Determination of Shaft Bending Fatigue Testing Machine
Published 2022-01-01“…By using eigenvalue approximation, the shaft bending resonant frequency formula is obtained, then the formula is compared and verified with the results from the nonlinear system simulation and finite element software, and it can improve the machine design and testing efficiency obviously. The analytical dynamic modeling and linearizing, and the given mode resonant frequency approximating, also provide a reference for many similar vibration machines.…”
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3662
Impact of Intellectual Capital, Profitability and Dividend on Market Capitalization
Published 2020-06-01“…The authors employ the multiple linear regression method. They measure the value of intellectual capital by the value added intellectual coefficient (VAIC ™), and the profitability — by return on assets (ROA) and return on equity (ROE). …”
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3663
ORGANIC PHOTOCONDUCTOR TTF-TCNQ (TETRATHIAFULVALENETETRACYANOQUINODIMETHANE): A POTENTIAL ROOM TEMPERATURE INFRARED DETECTOR AT 10 ?m H. R. Mohajeri Moghaddam* and N. Peyghamba...
Published 1996-06-01“…Slight deviation from linear dependency could be attributed to trapping in the band gap. …”
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3664
Determination of Coefficients of High-Order Schemes for Riemann-Liouville Derivative
Published 2014-01-01“…Finally, several numerical examples are implemented to testify the efficiency of the numerical schemes for p=3,…,6.…”
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3665
Approximation of Solutions of Split Monotone Variational Inclusion Problems and Fixed Point Problems
Published 2023-01-01“…Finally, we apply our algorithm to solve other related problems, precisely linear inverse problems. Some numerical illustrations are provided to further demonstrate the efficiency and competitiveness of our algorithm.…”
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3666
Link quality prediction based on random forest
Published 2019-04-01“…Link quality prediction is vital to the upper layer protocol design of wireless sensor networks.Selecting high quality links with the help of link quality prediction mechanisms can improve data transmission reliability and network communication efficiency.The Gaussian mixture model algorithm based on unsupervised clustering was employed to divide the link quality level.Zero-phase component analysis (ZCA) whitening was applied to remove the correlation between samples.The mean and variance of signal to noise ratio,link quality indicator,and received signal strength indicator were taken as the estimation parameters of link quality,and a link quality estimation model was constructed by using a random forest classification algorithm.The random forest regression algorithm was used to build a link quality prediction model,which predicted the link quality level at the next moment.In different scenarios,comparing with exponentially weighted moving average,triangle metric,support vector regression and linear regression prediction models,the proposed prediction model has higher prediction accuracy.…”
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3667
Analysis of crack growth problems using the object-oriented program bemcracker2D
Published 2018-07-01“…This paper presents an application of the boundary element method to the analysis of crack growth problems in linear elastic fracture mechanics and the correlation of results with experimental data. …”
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3668
Spectrum Sensing for Cognitive Coexistent Heterogeneous Networks
Published 2013-10-01“…Both the analysis and the simulation results show the feasibility and efficiency of the proposed scheme.…”
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3669
Research of the Fractal Extrapolation of Transmission System Load Signal of Tracked Vehicle
Published 2016-01-01“…Aiming at the problem of load test data volume of transmission system of heavy tracked vehicles(HTVs) is huge and extraction rate of effective information is low,the inherent fractal hierarchical rule of this data is studied,this data have the typical fractal characteristic is verified and the fractal parameter of the tracked vehicle transmission system load data under a certain road condition.Under the premise of ensurse data accuracy and fractal character,a new fractal interpolation method(FIM) is built,the continuation to simplify data information is realized.Moreover,obvious advantages could be observed in the results of the FIM,comparing to those of the linear interpolation method and the spline interpolation method.It could be concluded that by combining a’low-frequency-and-long- time’ sampling approach and the proposed FIM,the test efficiency of load history can be improved,the complex chaotic feature of high frequency sampling data can be represented.And a analysis way for researching the dynamic chaos characteristic of the HTVs transmission system is provided.…”
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3670
Evaluating automated evaluation systems for spoken English proficiency: An exploratory comparative study with human raters.
Published 2025-01-01“…This research has significant implications for integrating AESs in educational contexts, particularly in English as a Foreign Language (EFL) settings, where they can enhance efficiency and standardization.…”
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3671
Design and application of multiple model predictive control in stroke control of hydrostatic transmission
Published 2025-04-01“…The proposed controllers are based on a linear HST system mathematical model to track complex stroke reference trajectories of primary and secondary regulations under the realistic disturbances such as engine and load torques as a result of type of soil and field road conditions. …”
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3672
ESTIMASI HASIL PRODUKSI TBS DI PTPN IV REGIONAL 4 DENGAN METODE INTERPOLASI POLINOM
Published 2024-11-01“…The study aimed to provide an accurate prediction model to enhance decision-making and operational efficiency in the palm oil industry. The data in this research included the cultivated land area and Fresh Fruit Bunch (FFB) production records for the year 2023. …”
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3673
Network quality and user perception improvement of high-speed rail scene
Published 2021-03-01“…In view of the difficulty in improving the quality of mobile network in high-speed railway scenes and the poor efficiency of conventional methods, a methodology system for improving the perception of mobile communication users was explored in traffic trunk lines, especially in high-speed railway scenes.The methodology system was based on handover chain optimization with the core idea of “primary covering, reasonable reselection and orderly switching”.It adopted a three-layer theoretical structure include covering control firstly, then parameter optimization, and feature loading last.It used idle state and service state data pull graph correlation to determine problem road sections and cells, match the delay parameters of high-speed mobile scenes, load service quality and perception characteristics, and greatly improved the high-speed railway network quality and user perception.This method started from the principle analysis, with practical application, it could effectively solve the network problems, which could be fully extended to other linear scenes.…”
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3674
Integrating infiltration processes in hybrid downscaling methods to estimate sub-surface soil moisture
Published 2024-12-01“…This study aims to integrate infiltration processes into downscaling models to predict 1-km multi-layer soil moisture, while comparing performance of nonlinear and linear models, and evaluating RK improvements. Random forests (RF) and generalized linear model (GLM) were used to downscale surface soil moisture (0–5 cm) from 36-km Soil Moisture Active Passive satellite products to 1 km across the Qinghai-Tibet Plateau. …”
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3675
Parallelly Aligned, Activated Carbon Coated Plates Operating as Adsorption Columns for Removing VOCs
Published 2022-01-01“…Parallelly aligned plates coated with AC minimized the decrease in pressure by inducing smooth fluid flow and maintained a high removal efficiency even at a high linear velocity. The order of the capacities for adsorption was: xylene > ethyl benzene > toluene > benzene, which was due to their differences in hydrophobicity and molecular weight. …”
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3676
New modifications of ADM with applications in kind of PDEs
Published 2025-12-01“…While the classical ADM is effective for linear homogeneous cases, it has difficulties solving more complex problems.The proposed modifications—from MADM1 to MLADM—include Maclaurin and Taylor expansions, Laplace transforms, and single-step iterations.• These modifications enhance convergence, reduce complexity, and improve accuracy.• Each method offers specific advantages, such as accelerating convergence (MADM2, RADM4), simplifying computation (TSADM5), and achieving higher accuracy (MLADM).• Numerical examples confirm the accuracy and efficiency of all methods, highlighting their superiority over the classical ADM.…”
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3677
Formation control method for multiple flight vehicles based on adaptive dynamic programming
Published 2025-05-01“…Unmanned aerial vehicles (UAVs) are widely used across various fields, including atmospheric research, emergency rescue, and cargo transportation, demonstrating their versatility and efficiency in both civil and military applications. …”
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3678
Comportamento da cultura do tomateiro sob diferentes tensões de água no solo em ambiente protegido Behavior of tomato crop under different soil water tensions in a greenhouse
Published 2005-09-01“…It was also possible to observe that the efficiency of water use presented positive linear correlation with the water tension in the soil.…”
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3679
Efficacy and matrix value of xylanase in broiler fed an energy-deficient corn-wheat-soybean diet
Published 2025-05-01“…The linear and quadratic regression analysis and regression plateau were used to determine the xylanase recommendation and marginal level. …”
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3680
Elite Alleles of EPE1 Identified via Genome-wide Association Studies Increase Panicle Elongation Length in Rice
Published 2025-01-01“…A total of five quantitative trait loci (QTLs) significantly associated with PEL were detected in both years by using the general linear model (GLM) and the mixed linear model (MLM). …”
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