Results 1 to 10 of about 439,865 (314)

Application of vine copulas to dependence analysis of water quality data [PDF]

Journal of Applied Research in Water and Wastewater, 2022
In this study, using vine copulas and tree sequences, dependence analysis of groundwater quality variables (Total hardness (TH), Sodium adsorption ratio (SAR), Sodium percentage (Na %) and magnesium (Mg)) was performed.
Mohammad Nazeri Tahroudi, Yousef Ramezani, Carlo De Michele, Rasoul Mirabbasi   +3 more
doaj   +1 more source

On the Independent Set Sequence of a Tree [PDF]

The Electronic Journal of Combinatorics, 2021
Alavi, Malde, Schwenk and Erdős asked whether the independent set sequence of every tree is unimodal. Here we make some observations about this question. We show that for the uniformly random (labelled) tree, asymptotically almost surely (a.a.s.) the initial approximately 49.5% of the sequence is increasing while the terminal approximately 38.8% is ...
Abdul Basit 0001, David J. Galvin
openaire   +3 more sources

Sequence locally, think globally: the Darwin Tree of Life Project [PDF]

, 2022
The goals of the Earth Biogenome Project-to sequence the genomes of all eukaryotic life on earth-are as daunting as they are ambitious. The Darwin Tree of Life Project was founded to demonstrate the credibility of these goals and to deliver at-scale ...
Hart, Michelle, Lawniczak, Mara K N, Gaya, Ester, Broad, Gavin, The Darwin Tree of Life Project Consortium, Barnes, Ian, Wilson, Willie, Durbin, Richard, Hollingsworth, Pete, ?, ?, Berriman, Matthew, Darwin Tree of Life Project Consortium, Twyford, Alexander D; id_orcid, Hall, Neil, Kersey, Paul, Flicek, Paul, Howe, Kevin, Mieszkowska, Nova, Richards, Thomas, Lewis, Owen, Holland, Peter   +20 more
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On the status sequences of trees

Theoretical Computer Science, 2021
The status of a vertex $v$ in a connected graph is the sum of the distances from $v$ to all other vertices. The status sequence of a connected graph is the list of the statuses of all the vertices of the graph. In this paper we investigate the status sequences of trees.
Aida Abiad, Boris Brimkov, Alexander Grigoriev   +2 more
openaire   +5 more sources

The use of RT-PCR in the diagnosis and differentiation of vaccine strains of chicken infectious bronchitis and Newcastle disease

Open Veterinary Journal, 2023
Background: Infectious diseases of young and adult birds with respiratory syndrome are a significant deterrent to the development of industrial poultry farming due to a decrease in productivity and significant mortality.
Nigmetulla Assanov, Ryskeldi Bazarbayev, Assilbek Mussoyev, Bauyrzhan Otarbayev, Kairat Iskhan   +4 more
doaj   +1 more source

Simulation of potential evapotranspiration values based on vine copula

Meteorological Applications, 2021
Vine copula had a great impact on the study and analysis of dependence structures in various sciences. In multivariate analyses with dimensions of more than two variables, it is associated with computational complexities that solve vine copulas and these
Abbas Khashei‐Siuki, Ali Shahidi, Yousef Ramezani, Mohammad Nazeri Tahroudi   +3 more
doaj   +1 more source

Extremal Trees with Fixed Degree Sequence [PDF]

The Electronic Journal of Combinatorics, 2021
The greedy tree $\mathcal{G}(D)$ and the $\mathcal{M}$-tree $\mathcal{M}(D)$ are known to be extremal among trees with degree sequence $D$ with respect to various graph invariants. This paper provides a general theorem that covers a large family of invariants for which $\mathcal{G}(D)$ or $\mathcal{M}(D)$ is extremal. Many known results, for example on
Eric Ould Dadah Andriantiana, Valisoa Razanajatovo Misanantenaina, Stephan Wagner 0003   +2 more
openaire   +4 more sources

Packing Tree Degree Sequences [PDF]

Graphs and Combinatorics, 2019
AbstractA degree sequence is a list of non-negative integers, $${D = d_1, d_2, \ldots , d_n}$$D=d1,d2,…,dn. It is called graphical if there exists a simple graph G such that the degree of the ith vertex is $$d_i$$di; G is then said to be a realization of D. A tree degree sequence is one that is realized by a tree.
Kristóf Bérczi, Zoltán Király, Changshuo Liu, István Miklós   +3 more
openaire   +6 more sources

Sequencing the fungal tree of life [PDF]

New Phytologist, 2011
Sequencing the Fungal Tree of Life F. Martin 1 , D. Cullen 2 , D. Hibbett 3 , A. Pisabarro 4 , J. W. Spatafora 5 , S. E. Baker 6,7, I. V. Grigoriev 7 UMR INRA/UHP 1136, Interactions Arbres/Micro-Organismes, INRA-Nancy, 54280 Champenoux, France University of Wisconsin-Madison, Madison, WI, USA Clark University, Worcester, MA, USA Department of Agrarian ...
Martin, Francis, Cullen, D., Hibbett, D., Pisabarro, A., Spatafora, J.W., Baker, S.E., Grigoriev, I.V.   +6 more
openaire   +5 more sources

The effect of single recombination events on coalescent tree height and shape. [PDF]

PLoS ONE, 2013
The coalescent with recombination is a fundamental model to describe the genealogical history of DNA sequence samples from recombining organisms. Considering recombination as a process which acts along genomes and which creates sequence segments with ...
Luca Ferretti, Filippo Disanto, Thomas Wiehe   +2 more
doaj   +1 more source