Results 61 to 70 of about 245 (131)

Modeling and Forecasting of Financial Time Series in Emerging Markets using Multilayer Perceptrons [PDF]

open access: yes
This study develops a data-driven forecasting framework for the Nigerian Stock Exchange All Share Index (NSE ASI) using a Multilayer Perceptron (MLP) neural network.
Adinya, I., Udomboso , C.
core   +1 more source

Solar loading infrared thermography method for the non-invasive inspection of movable arts: The contribution of Multivariate Fast Iterative Filtering and Multidimensional Fast Iterative Filtering for 2D data techniques [PDF]

open access: yes
This work is focalized on the application of two recent techniques, i.e. Multivariate Fast Iterative Filtering (MvFIF) and Multidimensional Fast Iterative Filtering for 2D data (FIF2), that have demonstrated their ability in the pre-processing phase of ...
Cicone, Antonio   +6 more
core   +1 more source

基于改进集总经验模态近似熵的GIS放电故障诊断

open access: yesGaoya dianqi, 2020
气体绝缘组合电器(GIS)作为重要输电设备,由局部放电导致GIS绝缘劣化是常见的故障,需对其进行诊断。从不同放电故障下GIS振动信号的特点出发进行GIS放电故障的识别,搭建GIS典型放电故障实验模拟平台,采集GIS正常运行与尖刺放电、悬浮放电和沿面放电3种典型放电故障的振动信号,采用改进集总经验模态分解法(MEEMD)提取不同运行状态下振动信号模态函数,计算模态函数的近似熵值,将差异较为明显的近似熵值作为特征量输入相关向量机(RVM)进行训练,建立二叉树放电模型,对测试样本进行分类,验证此方法的正确性 ...
臧旭   +6 more
doaj  

Multiscale Analysis of Solar Loading Thermographic Signals for Wall Structure Inspection. [PDF]

open access: yesSensors (Basel), 2021
Tu K   +4 more
europepmc   +1 more source

Seasonal to decadal spatiotemporal variations of the global ocean carbon sink. [PDF]

open access: yesGlob Chang Biol, 2022
Zhang M   +8 more
europepmc   +1 more source

Deep reinforcement learning-based non-causal control for wave energy conversion [PDF]

open access: yes
As one of the most promising renewable energy resources, ocean wave energy has not been widely commercialized compared to wind energy and solar energy due to its high Levelized Cost of Electricity (LCoE).
Wang, Hanzhen   +3 more
core  

Avaliação de diferentes técnicas de END para materiais compósitos produzidos por manufatura aditiva [PDF]

open access: yes, 2017
O Processo de Manufatura Aditiva (MA) através da impressão 3D é uma das tecnologias de produção mais promissoras atualmente. No entanto, o desenvolvimento de Ensaios Não Destrutivos (END) fiáveis é um enorme desafio, já que os defeitos da MA apresentam ...
Simão, Carlos Manuel Pragueira
core  

Unsteady flow physics of airfoil dynamic stall [PDF]

open access: yes, 2020
A series of wind tunnel experiments were conducted on an NACA 0012 airfoil undergoing a linear pitch ramp maneuver at a fixed dimensionless pitch rate of 0.05 and across three transitional Reynolds numbers, Re = 200,000, 500,000, and 1,000,000.
Gupta, Rohit
core  

KLASIFIKASI STATUS MESIN POMPA AIR MENGGUNAKAN METODE RANDOM FOREST [PDF]

open access: yes
Terjadi kerusakan pada mesin pompa air dapat menyebabkan masalah yang besar salah satunya dapat mengakibatkan kesalahan mekanis pada mesin pompa. Tujuan dari penelitian ini adalah menghitung akurasi dalam proses klasifikasi menggunakan metode Random ...
YOLANDA, -
core  

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