A new method for automated detection of polar coronal holes is presented. This method, called perimeter tracing, uses a series of 171, 195, and 304 Å full disk images from the Extreme ultraviolet Imaging Telescope (EIT) on SOHO over solar cycle 23 to measure the perimeter of polar coronal holes as they appear on the limbs. Perimeter tracing minimizes line-of-sight obscurations caused by the emi...

A new method for automated detection of polar coronal holes is presented. This method, called perimeter tracing, uses a series of 171, 195, and 304 Å full disk images from the Extreme ultraviolet Imaging Telescope (EIT) on SOHO over solar cycle 23 to measure the perimeter of polar coronal holes as they appear on the limbs. Perimeter tracing minimizes line-of-sight obscurations caused by the emi...

In this paper we give a method to geometrically modify an open set such that the first k eigenvalues of the Dirichlet Laplacian and its perimeter are not increasing, its measure remains constant, and both perimeter and diameter decrease below a certain threshold. The key point of the analysis relies on the properties of the shape subsolutions for the torsion energy.

We compare the perimeter measure with the Airault-Malliavin surface measure and we prove that all open convex subsets of abstract Wiener spaces have finite perimeter. By an explicit counter–example, we show that in general this is not true for compact convex domains.

Original scientific paper The aim of this study was to find out the differences between perimeter and post basketball players in aerobic and anaerobic parameters. Thirty-four basketball players from four Bosnian teams were measured for body composition (body height and weight, fat%, fat free mass), aerobic power (VO2max prediction estimated using the multistage shuttle run test), anaerobic capa...

OBJECTIVE The aim of this study was to evaluate the effects of upper incisors and canine angulations introduced by different bracket prescriptions on dental arch perimeter. MATERIALS AND METHODS Cone beam computerized tomography scans collected using I-Cat (Imaging Sciences International, Hatfield, PA, USA) were selected conveniently from a database of routine exams of a clinical radiology ce...

BACKGROUND The transradial approach has become the preferred vascular access during conventional coronary angiography (CCA). Hereby, we evaluated the impact of pre-procedural radial artery diameter (RAD), the cross-sectional area (CSA), and the perimeter on vascular complications (VACs). METHODS We conducted a single-center prospective analysis of 513 patients who underwent CCA. Radial artery...

The Iowa landscape has been drastically transformed due to agricultural practices, causing population declines in many grassland bird species. Of greatest concern are bird species that are considered to be area sensitive. The Iowa State Preserve System is composed of tracts of prairies, wetlands, and woodlands that can provide habitat for many grassland bird species. This study provides an inve...

Scaling properties of the cluster distribution function and mean cluster size in the ensemble of clusters with fixed perimeter are analysed. The relevant scaling exponents are determined in all three regions of interest: lattice animals ( p < p c ) , percolation ( p = p , ) and compact clusters ( p > p c ) . Also, a form of the lattice animal distribution function in the statistical ensemble of...

In this paper, we study the asymptotic behavior of BV functions in complete metric measure spaces equipped with a doubling supporting $1$-Poincaré inequality. We show that at almost every point $x$ outside Cantor and jump parts function, limit function is Lipschitz continuous least gradient on tangent space to based $x$. also that, co-dimension $1$ Hausdorff measure-theoretic boundary set $E$ ...