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Št. zadetkov: 7
Note on the comparison of the first and second normalized Zagreb eccentricity indices
Damir Vukičević, Ante Graovac
Izvirni znanstveni članek
Oznake: kemijska struktura;matematična kemija;molekularni grafi;Randićev indeks;
Leto: 2010 Vir: dLib.si Digitalna knjižnica Slovenije
Altered Wiener indices
Damir Vukičević, Janez Žerovnik
Izvirni znanstveni članek
Oznake: matematika;kemijska teorija grafov;Wienerjev indeks;modificiran Wienerjev indeks;mathematics;chemical graph theory;Wiener index;modified Wiener index;
Recently Nikolić, Trinajstič and Randić put forward a novel modification ▫$^mW(G)$▫ of the Wiener index ▫$W(G)$▫, defined as ▫$^mW(G) = \sum_{u,v \in E(G)} n_G(u,v)^{-1} n_G(v,u)^{-1}$▫. This definition was generalized to $^mW(G) = \sum_{u,v \in E(G)} n_G(u,v)^{\lambda} n_G(v,u)^{\lamba}$ by Gutman ...
Leto: 2005 Vir: Digitalna knjižnica Univerze v Mariboru (DKUM)
Simplified computation of matchings in polygraphs
Ante Graovac, Damir Vukičević, Damir Ježek, Janez Žerovnik
Izvirni znanstveni članek
Oznake: polygraphs;matching polynomial;matchings;perfect matchings;Kekulé structures;extended structures;recursive enumeration;transfer matrix method;
Matching polynomial and perfect matchings for fasciagraphs, rotagraphs and twisted rotagraphs are treated in the paper. Classical transfer matrix approach makes it possible to get recursions for matching polynomial and perfect matchings, but the order of the matrix grows exponentially in the number ...
Leto: 2005 Vir: Fakulteta za strojništvo (UM FS)
Binary coding of algebraic Kekulé structures of catacondensed benzenoid graphs
Damir Vukičević, Petra Žigert Pleteršek
Izvirni znanstveni članek
Oznake: matematika;kemijska teorija grafov;benzenoidni ogljikovodiki;benzenoidni grafi;Kekuléjeve strukture;Randićeve strukture;1-faktor;binarno kodiranje;mathematics;chemical graph theory;benzenoid hydrocarbons;benzenoid graph;Kekulé structures;algebraic Kekulé structures;Randić structures;1-factor;binary coding;
Algebraična Kekuléjeva struktura končnega katakondenziranega benzenoidnega grafa s ▫$h$▫ šestkotniki je podana z binarno kodo dolžine ▫$h$▫. Postopek je obrnljiv in sicer lahko iz binarne kode rekonstruiramo algebraično Kekuléjevo strukturo.
Leto: 2008 Vir: Fakulteta za kemijo in kemijsko tehnologijo (UM FKKT)
ǂA ǂclass of modified Wiener indices
Ivan Gutman, Damir Vukičević, Janez Žerovnik
Izvirni znanstveni članek
Oznake: teorija grafov;kemijjska teorija grafov;modificiran Wienerjev indeks;indeks Nikolić-Trinajstić-Randić;razvejanost;graph theory;chemical graph theory;modified Wiener index;Nikolić-Trinajstić-Randić index;branching;
The Wiener index of a tree T obeys the relation W(T) = Σen1(e) • n2(e) where n1(e) and n2(e) are the number of vertices on the two sides of the edge e, and where the summation goes over all edges of T. Recently Nikolić, Trinajstić and Randić put forward a novel modification mW of the Wiener index, d ...
Leto: 2004 Vir: Fakulteta za strojništvo (UM FS)
On algebraic and geometric Kekulé structures in benzenoid rotagraphs
Ante Graovac, Damir Vukičević, Janez Žerovnik
Izvirni znanstveni članek
Oznake: Kekulé structures;Kekulé structure count;geometric and algebraic Kekulé structures;benzenoids;rotagraph;
Recently introduced algebraic Kekulé structures (AKS) describe the ▫$\pi$▫-electron distribution within rings of a conjugated network. The ratio of the AKS countto the classical Kekulé structures count was studied in benzenoid rotagraphs. By considering three representative classes of such rotagraph ...
Leto: 2006 Vir: Fakulteta za strojništvo (UM FS)
Relative edge betweenness centrality
Damir Vukičević, Riste Škrekovski, Aleksandra Tepeh
Izvirni znanstveni članek
Oznake:
We introduce a new edge centrality measure - relative edge betweenness ▫$\gamma (uv) = b(uv)/\sqrt{c(u)c(v)}$▫, where ▫$b(uv$)▫ is the standard edge betweenness and ▫$c(u)$▫ is the adjusted vertex betweenness. In this alternative definition, the importance of an edge is normalized with respect to th ...
Leto: 2017 Vir: Repozitorij Univerze na Primorskem (RUP)
Št. zadetkov: 7
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