Results 31 to 40 of about 153,301 (238)

Level sets estimation and Vorob'ev expectation of random compact sets [PDF]

open access: yes, 2011
The issue of a "mean shape" of a random set $X$ often arises, in particular in image analysis and pattern detection. There is no canonical definition but one possible approach is the so-called Vorob'ev expectation $\E_V(X)$, which is closely linked to ...
Baddeley   +38 more
core   +3 more sources

A BOX-COUNTING METHOD TO CHARACTERIZE DEGREES OF FOLIAGE CLUMPING USING AIRBORNE AND SIMULATED LIDAR DATA [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2015
Monitoring forest productivity and health is key to sustainable ecosystem management and informed decision making. A key parameter used in monitoring forest resources is the leaf area index (LAI), which is defined as the one-sided leaf area per unit ...
M. van Leeuwen   +3 more
doaj   +1 more source

The box dimension of random box-like self-affine sets

open access: yes, 2017
In this paper we study two random analogues of the box-like self-affine attractors introduced by Fraser, itself an extension of Sierpi\'nski carpets. We determine the almost sure box-counting dimension for the homogeneous random case ($1$-variable random)
Troscheit, Sascha
core   +1 more source

Monofractal Dimension in Quantifying the Image of Neurons in the Plane: Analysis of Image Features of Multipolar Neurons from the Principal Olivary Nucleus in Humans with Age

open access: yesFractal and Fractional, 2022
The existing study examines four features of 2D images from the principal olivary nucleus of the adult human. The main goal of the research is to investigate the relationship between monofractal and computational parameters that quantify three features ...
Nebojša Milošević
doaj   +1 more source

Comparison of gliding box and box-counting methods in river network analysis [PDF]

open access: yesNonlinear Processes in Geophysics, 2007
We use multifractal analysis to estimate the Rényi dimensions of river basins by two different partition methods. These methods differ in the way that the Euclidian plane support of the measure is covered, partitioning it by using mutually exclusive ...
A. Saa   +4 more
doaj  

Fractal analysis in the quantification of medical imaging associated with multiple sclerosis pathology

open access: yesFrontiers in Bioscience-Landmark, 2022
Backgrounds: Multiple sclerosis (MS) is an inveterate phlogistic situation characterized by focal and vaguely diffusive de-myelination and neurodegeneration, in the sphere of central nervous system (CNS).
Maria-Alexandra Paun   +3 more
doaj   +1 more source

Mapping the evolution of mitochondrial complex I through structural variation

open access: yesFEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin   +2 more
wiley   +1 more source

Fractal Features of Urban Fabrics and Urban Landscapes in Algiers, Tokyo and New York

open access: yesCybergeo, 2022
This research aims to explore the fractal features within three districts: Beb-el-Oued (Algiers), Chiyoda-ku (Tokyo), and lower Manhattan (New York). It is based on the study of (A) the evolution of the morphological identity of urban fabrics, and (B ...
Lemya Kacha   +2 more
doaj   +1 more source

By dawn or dusk—how circadian timing rewrites bacterial infection outcomes

open access: yesFEBS Letters, EarlyView.
The circadian clock shapes immune function, yet its influence on infection outcomes is only beginning to be understood. This review highlights how circadian timing alters host responses to the bacterial pathogens Salmonella enterica, Listeria monocytogenes, and Streptococcus pneumoniae revealing that the effectiveness of immune defense depends not only
Devons Mo   +2 more
wiley   +1 more source

Box-counting dimension of solution curves for a class of two-dimensional nonautonomous linear differential systems [PDF]

open access: yes, 2017
A class of two-dimensional linear differential systems is considered. The box-counting dimension of the graphs of solution curves is calculated.
Onitsuka, Masakazu, Tanaka, Satoshi
core   +2 more sources

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