Results 21 to 30 of about 3,443,652 (334)

Geodesic Distance in Planar Graphs [PDF]

, 2003
We derive the exact generating function for planar maps (genus zero fatgraphs) with vertices of arbitrary even valence and with two marked points at a fixed geodesic distance. This is done in a purely combinatorial way based on a bijection with decorated
Ambjørn, Ambjørn, Bousquet-Mélou, Bousquet-Mélou, Bouttier, Bouttier, Bouttier, Brézin, Chassaing, David, Delmas, Di Francesco, Di Francesco, Distler, E. Guitter, Eynard, Gelfand, J. Bouttier, Jimbo, Kawai, Kawamoto, Knizhnik, P. Di Francesco, Schaeffer, Staudacher, Tutte, Tutte, Tutte, Tutte   +28 more
core   +3 more sources

A Revised Sound Energy Theory Based on a New Formula for the Reverberation Radius in Rooms with Non-Diffuse Sound Field

Archives of Acoustics, 2014
This paper discusses the concept of the reverberation radius, also known as critical distance, in rooms with non-uniformly distributed sound absorption.
Higini ARAU-PUCHADES, Umberto BERARDI
doaj   +1 more source

Critical Distance Default Values for Structural Steels and a Simple Formulation to Estimate the Apparent Fracture Toughness in U-Notched Conditions

Metals, 2018
The structural integrity assessment of components containing notch-type defects has been the subject of extensive research in the last few decades. The assumption that notches behave as cracks is generally too conservative, making it necessary to develop
Sergio Cicero, Juan Diego Fuentes, Isabela Procopio, Virginia Madrazo, Pablo González   +4 more
doaj   +1 more source

Reverberation Radius in Real Rooms [PDF]

Telfor Journal, 2010
A reverberation radius, also called a critical distance, is an important parameter in sound reproduction. Statistical approach gives a simple formula for its calculation, and some simple methods for its measurement were described in literature.
M. Mijić, D. Mašović
doaj  

Evaluation of train-induced vibrations in medium-to-high speed railways: a parametric study

Frontiers in Built Environment
Over the past 2 decades, China has witnessed remarkable advancements in rail transportation systems, encompassing municipal railways, intercity networks, and high-speed rail infrastructure.
Xiao Guo, Decang Tian, Jinglin Sun, Dongfeng Zhang, Yahang Liu, Jinfeng Zhang, Jinfeng Zhang   +6 more
doaj   +1 more source

Notch Fatigue Life Research Based on Critical Distance Theory

Applied Sciences, 2023
Orthotropic anisotropic steel bridge panels are widely used in civil engineering due to their advantages of light deadweight, high ultimate bearing capacity, and wide range of applications.
Jifa Chen, Hao Ni, Li Huang, Yu Yang, Zhuoyi Chen   +4 more
doaj   +1 more source

Distance Critical Graphs

Graphs and Combinatorics
Abstract In 1971, Graham and Pollak provided a formula for the determinant of the distance matrix of any tree on n vertices. Yan and Yeh reproved this by exploiting the fact that pendant vertices can be deleted from trees without changing the remaining entries of the distance matrix.
Joshua N. Cooper, Gabrielle Tauscheck
openaire   +2 more sources

Stability of an Exciton bound to an Ionized Donor in Quantum Dots

, 2002
Total energy, binding energy, recombination rate (of the electron hole pair) for an exciton (X) bound in a parabolic two dimensional quantum dot by a donor impurity located on the z axis at a distance d from the dot plane, are calculated by using the ...
A.F. Terzis, Baskoutas, Bolcatto, C. Politis, Essaoudi, Jacak, Lampert, Lannoo, Liu, M. Rieth, McEuen, Ping, Ranjan, Reynolds, Rieth, S. Baskoutas, Skettrup, Stauffer, Stébé, V. Kapaklis, W. Schommers, Wang, Woggon, Xie, Xie, Xie   +25 more
core   +1 more source

Cone fields and topological sampling in manifolds with bounded curvature [PDF]

, 2012
Often noisy point clouds are given as an approximation of a particular compact set of interest. A finite point cloud is a compact set. This paper proves a reconstruction theorem which gives a sufficient condition, as a bound on the Hausdorff distance ...
Turner, Katharine
core   +1 more source

The ecclesiastical crisis of human sexuality: ‘Critical solidarity’, ‘critical distance’ or ‘critical engagement’

HTS Teologiese Studies/Theological Studies
The issue of human sexuality has many negative implications in African society. These arose in a number of contexts – legal, religious, cultural and societal – and were significantly divisive.
Graham A. Duncan
doaj   +1 more source