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Impact of Phase Angle Jump on a Doubly Fed Induction Generator under Low-Voltage Ride-Through Based on Transfer Function Decomposition
Published 2024-09-01“…Firstly, the differential-algebraic equations of the DFIG are linearized to propose their transfer function model. Secondly, considering its high-order characteristic, a model reduction method for the transfer function of the DFIG using the Schur decomposition is proposed, and the analytical expression of the output variables of the DFIG with the phase angle jump is derived by the inverse Laplace transformation to judge the necessity of the LVRT measures. …”
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1262
Optimization the preparation of whey protein from pasteurized liquid milk using Response Surface Methodology and Artificial Neural Network Model
Published 2025-06-01“…An optimization technique was done using Central Composite Design (CCD). The ideal Alcalase-hydrolysis settings were optimized for producing whey protein using RSM of DPPH (Association of Official Analytical Chemists (AOAC) method) and amino acid activity (High Performance Liquid Chromatography (HPLC) method). …”
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1263
Gearbox Status Recognition based on TMD-SVD and POS-BP Networks Under Strong Interference
Published 2021-05-01“…On the basis of existing methods, a method based on two-layer-mode decomposition (TMD) and singular value decomposition (SVD) is proposed, combined with particle swarm (POS)-BP neural network for fault diagnosis. …”
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1264
Predictive machine health monitoring using deep convolution neural network for noisy vibration signal of rotating machine using empirical mode decomposition
Published 2025-03-01“…An ablation study shows that the proposed method is highly susceptible to impulse noise as well. …”
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1265
Identification and optimization of relevant factors for chronic kidney disease in abdominal obesity patients by machine learning methods: insights from NHANES 2005–2018
Published 2024-11-01“…Furthermore, an optimal predictive model was developed for CKD using ten machine learning algorithms and enhanced model interpretability with the Shapley Additive Explanations (SHAP) method. …”
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1266
Facile synthesis and decomposition kinetics of novel green energetic molecular perovskite based on nitrate group DAN-4 as an alternative for ammonium nitrate oxidizer
Published 2025-05-01“…DAN-4 shows higher energy released than common oxidizer (AP) which evolved 836 J/g. Decomposition kinetics was investigated via isoconversional (model free) and model fitting. …”
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Fast and Intelligent Proportional–Integral–Derivative (PID) Attitude Control of Quadrotor and Dual-Rotor Coaxial Unmanned Aerial Vehicles (UAVs) Based on All-True Composite Motion...
Published 2024-12-01“…The simulation and experimental results show that the proposed all-true composite motion model and controller design method can accurately simulate the dynamic characteristics of the two types of UAVs and maintain stable attitude control, thus providing a valuable reference for the accurate attitude control of rotorcraft UAVs based on all-true composite motion.…”
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1270
Photovoltaic power prediction system based on dual-layer decomposition strategy and a novel dynamic grouping multi-objective coati optimization algorithm
Published 2025-05-01“…This system includes three core modules: data preprocessing, optimization, and prediction. The dual-layer decomposition strategy effectively utilizes high-frequency signal information, overcoming the limitations of single-layer methods. …”
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1271
AI-Enhanced Photovoltaic Power Prediction Under Cross-Continental Dust Events and Air Composition Variability in the Mediterranean Region
Published 2025-07-01“…Using machine learning methods, particularly regression trees, the proposed approach evaluates the impact of key environmental variables on PV performance, with an emphasis on atmospheric dust transport and air composition variability. …”
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1272
Simulation of Material Removal Process in EDM with Composite Tools
Published 2019-01-01“…In order to predict the wear of composite tool effectively, in this paper, a material removal model of single-pulse EDM with composite tools was established by using the finite element method. …”
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1273
Spatial distribution and urban–rural disparity of unmet need for family planning among married/in-union women in Ethiopia: a spatial and decomposition analysis
Published 2024-12-01“…Finally, multivariable decomposition analysis via a logit model was used to decompose the observed difference in unmet need by the compositional difference and the difference in effects of explanatory variables between places of residence.ResultsSpatial distribution of unmet need for family planning was clustered in Ethiopia with a global Moran's I index value of 0.25 (p-value = 0.004). …”
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1274
Optimal Design of Variable-Stiffness Fiber-Reinforced Composites
Published 2025-06-01“…In this paper, the problem of optimal spatial orientation of fibers in a two-dimensional composite structure under in-plane loading is studied, using the strain energy-minimizing method. …”
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1275
Effective conductivity of isotropic composite with Kapitza thermal resistance
Published 2018-12-01“… A simple method is introduced for computing the effective conductivity of isotropic composite with imperfect interface. …”
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1276
ANALYTICAL AND EXPERIMENTAL DETERMINATION OF STRESSES IN THE PLANE COMPOSITE PLATES
Published 2010-06-01“…This work presents the mathematical method for solving the differential equations by means of which we can determine the stresses in the plane composite plates used to build crafts. . …”
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1277
Conceptual and mathematical models, methods, and technologies for the study of the digital transformation of economic and social systems: a literature review and research agenda (P...
Published 2021-12-01“…We could do such a study by evaluating the activity results, analyzing them using mathematical models, and then synthesizing the activity with mathematical methods based on the analysis of the effects of using information technologies. …”
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1278
DETERMINATION OF LAMBDA-CYHALOTHRINE IN MICRO-INCAPSULATED INSECTICIDAL COMPOSITIONS
Published 2016-02-01“…The conditions of direct analytical determination and the stage of sample preparation with the previously described methods are adapted. The content of lambda-cyhalothrin together with cypermethrin in microencapsulated compositions is determined by spectrophotometric method taking into account the absorption of trace contaminants - technical substances and building blocks of microcapsules (phospholipids). …”
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1279
Eyaluation of Damage Leyel in Glass-Fabric Reinforced Composite
Published 2005-09-01“…A method is proposed for evaluating the extent of damage in fibre-reinforced polymer composites. …”
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1280
Refined equations and buckling modes under four-point bending loading of the sandwich test specimen with composite facing layers and a transversely flexible core
Published 2022-12-01“…A refined geometrically nonlinear theory of sandwich plates and shells with a flexible soft core and composite facing layers having low shear and compressive stiffness was introduced. …”
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