Results 51 to 60 of about 1,628 (189)

Analysis of the Spatial Distribution of Galaxies by Multiscale Methods

open access: yesEURASIP Journal on Advances in Signal Processing, 2005
Galaxies are arranged in interconnected walls and filaments forming a cosmic web encompassing huge, nearly empty, regions between the structures. Many statistical methods have been proposed in the past in order to describe the galaxy distribution and ...
E. Saar   +5 more
doaj   +1 more source

Morphological analysis of dendrites and spines by hybridization of ridge detection with twin support vector machine [PDF]

open access: yesPeerJ, 2016
Dendritic spines are described as neuronal protrusions. The morphology of dendritic spines and dendrites has a strong relationship to its function, as well as playing an important role in understanding brain function.
Shuihua Wang   +6 more
doaj   +2 more sources

Combined effect of neolamarckia cadamba leaves and electroporation method on hela cell anti- proliferation process [PDF]

open access: yes, 2019
This study suggests that natural sources may become an important tool in treating cancer. Neolamarckia cadamba (NC) leaves also well-known as “Anthocephalus Cadamba”, is a precious plant in Ayurvedic medicine.
Abd Rahman, Nur Adilah   +6 more
core   +1 more source

Application of an Improved Ridgelet Process Neural Network for Predicting the Temperature Rise of Rotor Structure Optimization

open access: yesMachines, 2023
To solve the negative-sequence temperature-rise problem of large equipment under asymmetric operating conditions, this paper optimizes the structure of the main components and adopts an improved process neural network to conduct online analysis and ...
Wu Guo, Jian Guo, Fengjuan Miao
doaj   +1 more source

Multiscale Transform and Shrinkage Thresholding Techniques for Medical Image Denoising – Performance Evaluation

open access: yesCybernetics and Information Technologies, 2020
Due to sparsity and multiresolution properties, Mutiscale transforms are gaining popularity in the field of medical image denoising. This paper empirically evaluates different Mutiscale transform approaches such as Wavelet, Bandelet, Ridgelet, Contourlet,
Nisha S. Shajun, Raja S. P.
doaj   +1 more source

Detection and discrimination of cosmological non-Gaussian signatures by multi-scale methods

open access: yes, 2003
Recent Cosmic Microwave Background (CMB) observations indicate that the temperature anisotropies arise from quantum fluctuations in the inflationary scenario. In the simplest inflationary models, the distribution of CMB temperature fluctuations should be
Aghanim   +33 more
core   +2 more sources

Signature of a Cosmic String Wake at $z=3$

open access: yes, 2020
In this paper, we describe the results of N-body simulation runs, which include a cosmic string wake of tension $G\mu= 4 \times 10^{-8}$ on top of the usual $\Lambda CDM$ fluctuations. To obtain a higher resolution of the wake in the simulations compared
da Cunha, Disrael Camargo Neves
core   +1 more source

Very high quality image restoration by combining wavelets and curvelets [PDF]

open access: yes, 2001
We outline digital implementations of two newly developed multiscale representation systems, namely, the ridgelet and curvelet transforms. We apply these digital transforms to the problem of restoring an image from noisy data and compare our results with
Candès, E. J.   +2 more
core   +1 more source

Coronal Mass Ejection Detection using Wavelets, Curvelets and Ridgelets: Applications for Space Weather Monitoring

open access: yes, 2010
Coronal mass ejections (CMEs) are large-scale eruptions of plasma and magnetic feld that can produce adverse space weather at Earth and other locations in the Heliosphere.
Aschwanden   +30 more
core   +1 more source

The framework of P systems applied to solve optimal watermarking problem [PDF]

open access: yes, 2014
Membrane computing (known as P systems) is a novel class of distributed parallel computing models inspired by the structure and functioning of living cells and organs, and its application to the real-world problems has become a hot topic in recent years.
Peng, Hong   +3 more
core   +1 more source

Home - About - Disclaimer - Privacy