Results 41 to 50 of about 4,345,907 (196)

Impact of Reference Data Sampling Density for Estimating Plot-Level Average Shrub Heights Using Terrestrial Laser Scanning Data

open access: yesFire, 2023
Terrestrial laser scanning (TLS) data can offer a means to estimate subcanopy fuel characteristics to support site characterization, quantification of treatment or fire effects, and inform fire modeling.
Aaron E. Maxwell   +6 more
doaj   +1 more source

Average Based-FTS Markov Chain Based on a Modified Frequency Density Partitioning to Predict COVID-19 in Central Java

open access: yesCauchy: Jurnal Matematika Murni dan Aplikasi, 2022
COVID-19 is still a pandemic in Indonesia, and Central Java is no exception. New positive cases of COVID-19 in Central Java are being discovered every day. Therefore, researchers try to predict new positive cases in Central Java. Many forecasting methods
Susilo Hariyanto   +2 more
doaj   +1 more source

Extremal results on average subtree density of series-reduced trees

open access: yes, 2013
Vince and Wang showed that the average subtree density of a series-reduced tree is between 1/2 and 3/4, answering a conjecture of Jamison. They ask under what conditions a sequence of such trees may have average subtree density tending to either bound ...
Haslegrave, John
core   +1 more source

A cellular-automata model of flow in ant-trails: non-monotonic variation of speed with density [PDF]

open access: yes, 2002
Generically, in models of driven interacting particles the average speed of the particles decreases monotonically with increasing density. We propose a counter-example, motivated by the motion of ants in a trail, where the average speed of the particles ...
Chowdhury, Debashish   +3 more
core   +2 more sources

Level density of a Fermion gas: average growth, fluctuations, universality

open access: yes, 2005
It has been shown by H. Bethe more than 70 years ago that the number of excited states of a Fermi gas grows, at high excitation energies $Q$, like the exponential of the square root of $Q$.
Leboeuf, Patricio
core   +3 more sources

First Order Phase Transition of a Long Polymer Chain [PDF]

open access: yes, 2010
We consider a model consisting of a self-avoiding polygon occupying a variable density of the sites of a square lattice. A fixed energy is associated with each $90^\circ$-bend of the polygon. We use a grand canonical ensemble, introducing parameters $\mu$
Adda-Bedia M   +7 more
core   +3 more sources

Union-Closed Families with Small Average Overlap Densities [PDF]

open access: yesThe Electronic Journal of Combinatorics, 2022
In this very short paper, we show that the average overlap density of a union-closed family $\mathcal{F}$ of subsets of $\{1,2,\ldots,n\}$ may be as small as \[\Theta((\log_2 \log_2 |\mathcal{F}|)/(\log_2 |\mathcal{F}|)),\] for infinitely many positive integers $n$.
openaire   +4 more sources

Effect of treatment types of recycled concrete aggregates on the properties of concrete

open access: yesBudownictwo i Architektura
Reusing waste materials such as construction and demolition waste is an environmentally significant task. This article aims to improve the quality of recycled aggregates after the demolition of concrete structures.
Liudmyla Trykoz   +4 more
doaj   +1 more source

Brushes of flexible, semiflexible and rodlike diblock polyampholytes: Molecular dynamics simulation and scaling analysis

open access: yes, 2009
Planar brushes of flexible, semiflexible and rodlike diblock polyampholytes are studied using molecular dynamics simulations and scaling analysis in a wide range of the grafting density.
Hossein Fazli   +3 more
core   +1 more source

The relation between star formation, morphology and local density in high redshift clusters and groups [PDF]

open access: yes, 2008
We investigate how the [OII] properties and the morphologies of galaxies in clusters and groups at z=0.4-0.8 depend on projected local galaxy density, and compare with the field at similar redshifts and clusters at low-z.
Alfonso Aragón‐Salamanca   +21 more
core   +4 more sources

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