Results 111 to 120 of about 1,423,064 (275)

Fourier Analysis: Graphical Animation and Analysis of Experimental Data with Excel

Spreadsheets in Education, 2012
According to Fourier formulation, any function that can be represented in a graph may be approximated by the “sum” of infinite sinusoidal functions (Fourier series), termed as “waves”.The adopted approach is accessible to students of the first years of ...
Margarida Oliveira, Suzana Nápoles, Sérgio Oliveira   +2 more
doaj   +2 more sources

Sentiment Analysis for E-Commerce Product Reviews Using a Fourier Graph Transformer Network

IEEE Access
Fueled by the accelerating growth of e-commerce, user-generated product reviews have increased substantially in both volume and structural complexity.
Yan Zhang, Qiaoyu Ma, Yumeng Zhang, Yichen Liu   +3 more
doaj   +1 more source

Modified Fourier expansions: theory, construction and applications [PDF]

, 2010
Modified Fourier expansions present an alternative to more standard algorithms for the approximation of nonperiodic functions in bounded domains. This thesis addresses the theory of such expansions, their effective construction and computation, and ...

core   +2 more sources

A Superlubricated Magnetically Steerable Microcatheter with Integrated Optical and Fluidic Channels

Advanced Robotics Research, EarlyView.
A magnetically steerable microcatheter with integrated optical and fluidic channels is developed for multifunctional navigation in tortuous anatomical environments. A surface‐grafted hydrogel coating enables low‐friction actuation. The device demonstrates stable light and fluid delivery during magnetic manipulation, offering a compact platform for ...
Yuntian Du, Ruokun He, Luqi Li, Hesheng Wang, Zhuo‐Chen Ma, Bing Han   +5 more
wiley   +1 more source

Parameterising Arbitrary Shapes via Fourier Descriptors for Evidence-Gathering Extraction

, 1998
According to the formulation of the Hough transform it is possible to extract any shape that can be represented by an analytic equation with a number of free parameters.
Nixon, M.S., Aguado, A.S., Montiel, M.E.
core   +1 more source

Flexible Sensors for Robotics Tactile Perception: A Review

Advanced Robotics Research, EarlyView.
Flexible tactile sensing for robotics is reviewed through four interconnected dimensions. Physical mechanisms include piezoresistive, capacitive, piezoelectric, triboelectric, iontronic, and optical sensing. Structural design includes bioinspired, defect‐based, and MEMS‐based tactile systems.
Yu Song, Ying Chen, Yihao Chen, Xue Feng
wiley   +1 more source

Frequency-aware signal image representation and graph transformer learning for bearing fault diagnosis

Frontiers in Artificial Intelligence
IntroductionRolling bearing fault diagnosis is essential for predictive maintenance because bearing failures can cause unexpected downtime, increased maintenance costs, and safety risks.
Sandhya Mitta, Poornima Nedunchezhian
doaj   +1 more source

Potential Advantages Coming from the Synergy Between Limb and Nadir Fourier Transform Imaging Observations

, 2023
We study potential advantages coming from the exploitation of the synergy between limb and nadir measurements from Imaging Fourier Transform Spectrometers with the rigorous approach of the two-dimensional complete data ...
Quentin Errera, Simone Ceccherini, Jörn Ungermann, Cecilia Tirelli, Gabriele Poli, Samuele Del Bianco, Piera Raspollini, Michael Höpfner, Jukka Kujanpaa, Bernd Funke, Peter Preusse, Ugo Cortesi, BjörnMartin Sinnhuber   +12 more
core  

From Pores to Pavement: Advanced Modeling of Aluminosilicates for Scalable Carbon Capture in Concrete

Advanced Science, EarlyView.
This study presents a transferable modeling framework for carbon capture using aluminosilicates, integrating Universal Isotherm Modeling with experimental data. It reveals how ultramicropores, alumina content, and amine functionalization influence CO2 adsorption energetics.
Pooja Anil Kumar Nair, Jéssica de O. N. Ribeiro, Murilo Daniel de Mello Innocentini, Kevin Paine, Juliana Calabria‐Holley   +4 more
wiley   +1 more source

Integrating gated recurrent unit in graph neural network to improve infectious disease prediction: an attempt

Frontiers in Public Health
ObjectiveThis study focuses on enhancing the precision of epidemic time series data prediction by integrating Gated Recurrent Unit (GRU) into a Graph Neural Network (GNN), forming the GRGNN.
Xu-dong Liu, Xu-dong Liu, Bo-han Hou, Bo-han Hou, Zhong-jun Xie, Ning Feng, Xiao-ping Dong, Xiao-ping Dong   +7 more
doaj   +1 more source