Results 61 to 70 of about 20,938 (205)

Worker exposure to ultrafine particles during carbon black treatment

open access: yesMedycyna Pracy, 2015
Background: The aim of the project was to assess the exposure of workers to ultrafine particles released during handling and packing of carbon black.
Urszula Mikołajczyk   +2 more
doaj   +1 more source

Multifractal analysis of divergence points of deformed measure theoretical Birkhoff averages. IV: Divergence points and packing dimension

open access: yes, 2008
During the past 10 years multifractal analysis has received an enormous interest. For a sequence (phi(n))(n) of functions phi(n) : X -> M on a metric space X, multifractal analysis refers to the study of the Hausdorff and/or packing dimension of the ...
Olsen, Lars Ole Ronnow
core   +2 more sources

On symplectic packing problems in higher dimensions

open access: yesMathematische Annalen
Abstract Let $$B^{2n}(R)$$ denote the closed 2n-dimensional symplectic ball of area R, and let $$\Sigma _g(L)$$ be a closed symplectic surface of genus g and area L. We prove that there is a symplectic embedding $$\bigsqcup \nolimits _{i=1}^k B^4(R_i) \times \Sigma _g (L) \
Kyler Siegel, Yuan Yao
openaire   +3 more sources

The Third Dimension of the Magdouh Mosaic in Antioch

open access: yesJournal of Mosaic Research, 2019
This study investigates the complex geometry of the pattern of circles in the Magdouh Mosaic, which dates to between the ffth and sixth centuries, found in Antioch-on-the-Orontes (modern Antakya, Turkey). The mosaic has a complex pattern that is composed
Hakan HİSARLIGİL   +1 more
doaj   +1 more source

On the packing dimension of Furstenberg sets

open access: yesJournal d'Analyse Mathématique, 2022
We prove that if $α\in (0,1/2]$, then the packing dimension of a set $E\subset\mathbb{R}^2$ for which there exists a set of lines of dimension $1$ intersecting $E$ in dimension $\ge α$ is at least $1/2+α+c(α)$ for some $c(α)>0$. In particular, this holds for $α$-Furstenberg sets, that is, sets having intersection of Hausdorff dimension $\geα$ with ...
openaire   +2 more sources

A Preview of a Construction of a Crystal Lattice Based on Intermolecular Interactions

open access: yesCrystals, 2019
A general procedure of crystal packing reconstruction using a certain number of intermolecular interactions is introduced and demonstrated on the crystal structure of l-histidine·HCl·H2O.
Vladimír Hejtmánek   +2 more
doaj   +1 more source

Dimension and measure theory of self-similar structures with no separation condition

open access: yes, 2015
We introduce methods to cope with self-similar sets when we do not assume any separation condition. For a self-similar set K ⊆ ℝᵈ we establish a similarity dimension-like formula for Hausdorff dimension regardless of any separation condition.
Farkas, Ábel
core  

Packing and Cutting Stone Blocks Based on the Nonlinear Programming of Tree Cases

open access: yesComputation
Typically, dimension stones, commonly called stone blocks, are cut into multiple small cuboid stones so that multiple sculptures can be produced. To use the stone block as efficiently as possible, it is essential to pack these small cuboids in each stone
Taeyong Kim
doaj   +1 more source

DIMENSION INEQUALITIES OF MULTIFRACTAL HAUSDORFF MEASURES AND MULTIFRACTAL PACKING MEASURES

open access: yes, 2000
Let µ be a Borel probability measure on Rd. We study the Hausdorff dimension and the packing dimension of the multifractal Hausdorff measurehq;t and the multifractal packing measure p q;t introduced in [L.
L. Olsen
core   +1 more source

Sphere Packings in 212 Dimensions

open access: yesAxioms
This paper investigates cylindrical sphere packings, that is, patterns of uniform spheres with mutually disjoint interiors which are all tangent to a common cylinder. The key unifying themes are the existence and uniqueness of hexagonal packings, in which each sphere is tangent to six others.
openaire   +1 more source

Home - About - Disclaimer - Privacy