Results 51 to 60 of about 43,839 (225)

Gaborlet‐guided sparse filtering: A novel intelligent method for lithology identification by vibration signals while drilling

Deep Underground Science and Engineering, EarlyView.
The flowchart illustrates rock specimen testing, vibration signal acquisition, and feature extraction with Gaborlet and sparse filtering for classification. Abstract Traditional lithology identification methods mainly rely on core sampling and well‐logging data.
Jian Hao, Danqi Zhang, Zhenqi Song, Jinrui Wang, Qi Wang, Heqing Liu   +5 more
wiley   +1 more source

Enhancing Volatility Prediction: A Wavelet‐Based Hierarchical Forecast Reconciliation Approach

Journal of Forecasting, EarlyView.
ABSTRACT Forecasting realized volatility (RV) has been widely studied, with numerous techniques developed to enhance predictive accuracy. Among these techniques, the use of RV decompositions based on intraday asset returns has been applied. However, the use of a frequency‐based decomposition, which provides unique insights into the dynamics of RV ...
Adam Clements, Ajith Perera
wiley   +1 more source

Adaptive multiresolution computations applied to detonations

, 2015
A space-time adaptive method is presented for the reactive Euler equations describing chemically reacting gas flow where a two species model is used for the chemistry.
Roussel, Olivier, Schneider, Kai
core   +3 more sources

Survey on AI‐Enabled Computer Vision Technologies and Applications for Space Robotic Missions

Journal of Field Robotics, EarlyView.
ABSTRACT This survey provides a comprehensive overview of recent advancements and challenges in Artificial Intelligence (AI)‐enabled computer vision (CV) techniques for space robotic missions, spanning critical phases such as Entry, Descent, and Landing (EDL), orbital operations, and planetary surface exploration.
Maciej Quoos, Steven Kay, Julia Wajoras, Robert Field, Evridiki V. Ntagiou, Fakher Mohammad, Yang Gao   +6 more
wiley   +1 more source

GPU based building footprint identification utilising self-attention multiresolution analysis

All Earth, 2023
Techniques for the semantic segmentation of remotely sensed imageries for building footprint identification have been widely studied and several supervised and unsupervised techniques have been proposed. The ability to perform online mapping and accurate
Rizwan Ahmed Ansari, Akshat Ramachandran, Winnie Thomas   +2 more
doaj   +1 more source

Speeding up Simplification of Polygonal Curves using Nested Approximations

, 2008
We develop a multiresolution approach to the problem of polygonal curve approximation. We show theoretically and experimentally that, if the simplification algorithm A used between any two successive levels of resolution satisfies some conditions, the ...
A Kolesnikov, A Melkman, A Pikaz, DH Douglas, G Becq, G. Ménier, H Sakoe, J Le Buhan, J-H Horng, J-L Remy, J-S Wu, JC Perez, KB Pratt, M Salotti, M Visvalingam, P. F. Marteau, RL Rosin   +16 more
core   +1 more source

Experimental Investigations on the Impact of Operational Conditions on Bubble Dynamics and the Resulting Vibrations in Gas‐Stirred Ladles

steel research international, EarlyView.
This study applies sensitive vibration sensors to investigate gas bubble behavior in liquid metal during argon injection. Analysis of vibration signals provides insights into bubble evolution and the influence of gas flow and surface pressure. The results provide a basis for improved vibration‐based two‐phase flow models, enhancing accuracy in ...
Konstantinos Rigas, Bernd Willers, Sven Eckert, Björn Glaser   +3 more
wiley   +1 more source

From Wavelet Analysis to Fractional Calculus: A Review

Mathematics, 2023
In this note, we review some important results on wavelets, together with their main applications. Similarly, we present the main results on fractional calculus and their current applications in pure and applied science. We conclude the paper showing the
Emanuel Guariglia, Rodrigo C. Guido, Gabriel J. P. Dalalana   +2 more
doaj   +1 more source

Financial time series representation using multiresolution important point retrieval method [PDF]

, 2008
Financial time series analysis usually conducts by determining the series important points. These important points which are the peaks and the dips indicate the affecting of some important factors or events which are available both internal factors and ...
Md. Sap, Mohd. Noor, Phetking, Chaliaw, Selamat, Ali   +2 more
core  

Topology, homogeneity and scale factors for object detection: application of eCognition software for urban mapping using multispectral satellite image

, 2018
The research scope of this paper is to apply spatial object based image analysis (OBIA) method for processing panchromatic multispectral image covering study area of Brussels for urban mapping.
Lemenkova, Polina
core   +2 more sources