Results 21 to 30 of about 3,903,221 (297)

On the Distance Spectral Radius of Trees with Given Degree Sequence

open access: yesDiscussiones Mathematicae Graph Theory, 2020
We consider the problem of maximizing the distance spectral radius and a slight generalization thereof among all trees with some prescribed degree sequence.
Dadedzi Kenneth   +2 more
doaj   +1 more source

Tree compression with top trees [PDF]

open access: yesInformation and Computation, 2013
We introduce a new compression scheme for labeled trees based on top trees. Our compression scheme is the first to simultaneously take advantage of internal repeats in the tree (as opposed to the classical DAG compression that only exploits rooted subtree repeats) while also supporting fast navigational queries directly on the compressed representation.
Bille, Philip   +3 more
openaire   +4 more sources

Trees with Distinguishing Index Equal Distinguishing Number Plus One

open access: yesDiscussiones Mathematicae Graph Theory, 2020
The distinguishing number (index) D(G) (D′ (G)) of a graph G is the least integer d such that G has an vertex (edge) labeling with d labels that is preserved only by the trivial automorphism.
Alikhani Saeid   +3 more
doaj   +1 more source

Hash Trees Versus B-Trees [PDF]

open access: yesThe Computer Journal, 1984
Summary: The hash trees method of external hashing is known to have advantages for certain types of primary key distribution. In this paper the value of the method as a general indexing technique - for secondary keys as well as primary keys - is assessed, and comparison with the B-trees method is presented.
Bell, D. A., Deen, S. M.
openaire   +1 more source

Zaštita životne sredine u građevinarstvu sa osvrtom na primenu ekoloških i nano materijala / Environmental protection in civil engineering with regard to the use of eco and nano materials / Защита окружающей среды в строительстве при использовании экологичных и наноматериалов

open access: yesVojnotehnički Glasnik, 2015
Antropogeni i tehnogeni uticaj na životnu sredinu pojačan je u poslednjoj deceniji XX veka. Taj trend se nastavlja i u XXI veku, a ofanziva globalizacije donosi nove ekološke probleme. Globalni ekološki problemi najviše pogađaju gradove.
Miloš Z. Petrović   +2 more
doaj   +1 more source

Singing Trees. Note su Tōru Takemitsu

open access: yesRivista di Estetica, 2022
The article examines the relationship between Western and Eastern aesthetics, analyzing some aspects of the musical production of Tōru Takemitsu, the great Japanese composer, now firmly included in the contemporary music “Western Canon”.
Pier Alberto, Porceddu Cilione
doaj   +1 more source

Investigating Evaluation Measures in Ant Colony Algorithms for Learning Decision Tree Classifiers [PDF]

open access: yes, 2015
Ant-Tree-Miner is a decision tree induction algorithm that is based on the Ant Colony Optimization (ACO) meta- heuristic. Ant-Tree-Miner-M is a recently introduced extension of Ant-Tree-Miner that learns multi-tree classification models.
Abdelbar, Ashraf M.   +2 more
core   +1 more source

A century of tree line changes in sub-Arctic Sweden shows local and regional variability and only a minor influence of 20th century climate warming [PDF]

open access: yes, 2011
Aim Models project that climate warming will cause the tree line to move to higher elevations in alpine areas and more northerly latitudes in Arctic environments.
Callaghan, Terry V   +5 more
core   +1 more source

Pairs of trees in tree–tree triangulations

open access: yesDiscrete Mathematics, 2007
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Schaar, Günter, Skupień, Zdzisław
openaire   +2 more sources

Colourings of (k-r,k)-trees [PDF]

open access: yesOpuscula Mathematica, 2017
Trees are generalized to a special kind of higher dimensional complexes known as \((j,k)\)-trees ([L. W. Beineke, R. E. Pippert, On the structure of \((m,n)\)-trees, Proc. 8th S-E Conf. Combinatorics, Graph Theory and Computing, 1977, 75-80]), and which
M. Borowiecki, H. P. Patil
doaj   +1 more source

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