Results 11 to 20 of about 1,648,870 (357)

A note on the average density function in urban analysis

open access: yesUrban Studies, 2013
It is argued that the density function, commonly used in the study of urban spatial structure, is more appropriately described as the ‘marginal density function’.
Parr, John B., Holden, Darryl
core   +4 more sources

The average density of planar Brownian motion [PDF]

open access: yes, 1997
We show that the occupation measure on the path of a planar Brownian motion run for an arbitrary finite time intervalhas an average density of order three with respect to thegauge function t^2 log(1/t).
Mörters, Peter
core   +3 more sources

The average density of super-Brownian motion [PDF]

open access: yesAnnales de l'Institut Henri Poincare (B) Probability and Statistics, 1999
In this paper we prove the existence of average densities for the support of a superBrownian motion at a fixed time. Our result establishes a dimension-dependent fractal parameter for super-Brownian motion, which enables us to compare the local mass ...
Peter Mörters   +2 more
core   +3 more sources

The average electron momentum density and rigorous bounds to average electron densities for atoms and molecules

open access: yesChemical Physics Letters, 1986
The average electron density in momentum space, viz.(γ), where γ(p) is the electron momentum density, is defined and shown to be experimentally measureable.
Chakravorty, Subhas J.   +3 more
core   +2 more sources

AVERAGE DENSITY ESTIMATORS: EFFICIENCY AND BOOTSTRAP CONSISTENCY [PDF]

open access: yesEconometric Theory, 2021
This paper highlights a tension between semiparametric efficiency and bootstrap consistency in the context of a canonical semiparametric estimation problem, namely the problem of estimating the average density. It is shown that although simple plug-in estimators suffer from bias problems preventing them from achieving semiparametric efficiency under ...
Cattaneo, Matias D., Jansson, Michael
openaire   +3 more sources

Not your average density [PDF]

open access: yesStructure, 1997
GJK would like to thank T Alwyn Jones and Lars Liljas (Uppsala) for illuminating discussions and many pointers to relevant literature. RJR thanks Bart Hazes and Navraj S Pannu for stimulating discussions. We both thank our colleagues for allowing us to share unpublished results in the case histories.
Kleywegt, Gerard J, Read, Randy J
openaire   +2 more sources

BOOTSTRAPPING DENSITY-WEIGHTED AVERAGE DERIVATIVES [PDF]

open access: yesEconometric Theory, 2010
We investigate the properties of several bootstrap-based inference procedures for semiparametric density-weighted average derivatives. The key innovation in this paper is to employ an alternative asymptotic framework to assess the properties of these inference procedures. This theoretical approach is conceptually distinct from the traditional approach (
Cattaneo, Matias D.   +2 more
openaire   +5 more sources

ESTIMATING AVERAGE STEMWOOD DENSITY FROM BREAST HIGHT DENSITY IN THREE SPECIES OF FOREST TREES [PDF]

open access: yesMesopotamia Journal of Agriculture, 2007
Simple regression was used to obtain a mathematical equations for estimating the total stemwood density in three species of forest tree, namely: Pinus brutia Ten, Casuarina equestifolia, and Eualyptus Camaldulensis Dehn; by connecting the total stemwood ...
Walid A. Kasir
doaj   +1 more source

Averaging population density [PDF]

open access: yesDemography, 1984
Abstract Population density is a commonly quoted statistic. Almost no general descriptive summary of the population of an area is complete without a density listing, table or map. As each such density statistic is an average, it is worth considering what kind of average is being used. This article analyzes this and illustrates the effect
openaire   +2 more sources

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