Results 41 to 50 of about 675,740 (311)

Statistical Study of the Bias and Precision for Six Estimation Methods for the Fractal Dimension of Randomly Rough Surfaces

open access: yesFractal and Fractional
The simulation and characterisation of randomly rough surfaces is an important topic in surface science, tribology, geo- and planetary sciences, image analysis and optics.
Jorge Luis Flores Alarcón   +4 more
doaj   +1 more source

Phase transitions in random surfaces

open access: yesNuclear Physics B, 1989
Abstract We investigate the statistical properties of triangulated random surfaces of fixed connectivity embedded in d-dimensional space and weighted with an action that contains the extrinsic curvature of the surface as well as the usual Nambu-Goto term. Numerically, we find no second-order phase transition for finite values of the rigidity coupling,
Baig, M   +4 more
openaire   +1 more source

Why insect pretarsi are equipped with two claws: Elastically connected claws and their interlocking dynamics with the rough substrate

open access: yesFriction
In the course of their evolution, insects developed diverse supplementary structures on their legs to enable them to grip a variety of substrata. Sufficient grip is required to generate propulsive forces by friction or/and interlocking with the substrate
Stanislav N. Gorb   +2 more
doaj   +1 more source

Random surfaces that suppress single scattering [PDF]

open access: yesOptics Letters, 1999
3 pagers (Latex), 3 ...
Maradudin, AA   +3 more
openaire   +5 more sources

A Multi-Source Data Fusion Method to Improve the Accuracy of Precipitation Products: A Machine Learning Algorithm

open access: yesRemote Sensing, 2022
In recent decades, several products have been proposed for estimating precipitation amounts. However, due to the complexity of climatic conditions, topography, etc., providing more accurate and stable precipitation products is of great importance ...
Mazen E. Assiri, Salman Qureshi
doaj   +1 more source

Random graphs on surfaces

open access: yesJournal of Combinatorial Theory, Series B, 2008
Counting labelled planar graphs, and typical properties of random labelled planar graphs, have received much attention recently. We start the process here of extending these investigations to graphs embeddable on any fixed surface S. In particular we show that the labelled graphs embeddable on S have the same growth constant as for planar graphs ...
openaire   +3 more sources

Correlations and screening of topological charges in Gaussian random fields [PDF]

open access: yes, 2003
Two-point topological charge correlation functions of several types of geometric singularity in Gaussian random fields are calculated explicitly, using a general scheme: zeros of n-dimensional random vectors, signed by the sign of their Jacobian ...
Dennis, MR   +2 more
core   +1 more source

Destruction of Bulk Ordering by Surface Randomness [PDF]

open access: yesPhysical Review Letters, 2002
4 pages Revtex; Eq.
Feldman, D. E., Vinokur, V. M.
openaire   +3 more sources

Surface Localization in Impurity Band with Random Displacements and Long-Range Interactions

open access: yesAdvances in Mathematical Physics, 2018
We study the random Schrödinger operators in a Euclidean space with the disorder generated by two complementary mechanisms: random substitution in a lower-dimensional layer and random displacements in the bulk, without additional assumptions regarding ...
Victor Chulaevsky
doaj   +1 more source

Diversity and complexity in neural organoids

open access: yesFEBS Letters, EarlyView.
Neural organoid research aims to expand genetic diversity on one side and increase tissue complexity on the other. Chimeroids integrate multiple donor genomes within single organoids. Self‐organising multi‐identity organoids, exogenous cell seeding, or enforced assembly of region‐specific organoids contribute to tissue complexity.
Ilaria Chiaradia, Madeline A. Lancaster
wiley   +1 more source

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