Results 51 to 60 of about 1,607 (200)

On Sombor coindex of graphs

open access: yes, 2021
Motivated by the recently introduced topological index, the Somber index, we define a new topological index of a graph in this paper, we call it Sombor coindex.
Chinglensana, Phanjoubam   +1 more
core   +1 more source

Population doses from terrestrial gamma exposure in Serbia [PDF]

open access: yes, 2007
Background: Terrestrial radiation emitted from naturally occurring radionuclides, such as 40K and radionuclides from the 238U and 232Th series and their decay products represent the main external source of irradiation to the human body.
Dragović Snežana   +3 more
core   +1 more source

Comparisons of the Sombor Index of Alkane, Alkyl, and Annulene Series with Their Molecular Mass

open access: yesJournal of Chemistry, 2022
Suppose G is an undirected simple graph. A topological index for G is a number with this property that it is invariant under all graph isomorphisms with applications in chemistry.
Maryam Mohammadi   +2 more
doaj   +1 more source

Institutionalization of Regional Policy and the Regional Institution System in Serbia [PDF]

open access: yes, 2013
This study summarizes aspects of Serbian regional policy with special focus on regions and the development of the regional institutions. The study emphasizes the importance of the issue in the Republic of Serbia in 2010, with the ambition to join the ...
Nagy, Imre, Takács, Zoltán
core   +1 more source

THE REGIONAL STRUCTURE OF SERBIA [PDF]

open access: yes, 2009
This paper approaches some of the characteristics of the regional development of Serbia, from the perspective of two models of territorial organization: one is governmental (administrative and statistical), and the other is functional.
Marina TODOROVIC, Radmila MILETIC
core   +2 more sources

Sombor index of Kragujevac trees

open access: yesScientific Publications of the State University of Novi Pazar Series A: Applied Mathematics, Informatics and mechanics, 2021
The paper is concerned with the Sombor index (SO) of Kragujevac trees (Kg). A slightly more general definition of Kg is offered. SO is a recently introduced degree-based topological index. A general combinatorial expression for SO(Kg) is established. The species with minimum and maximum SO(Kg)-values are determined.
Ivan Gutman   +2 more
openaire   +1 more source

Prosecutor v Todorovic: illegal capture as an obstacle to the exercise of international criminal jurisdiction [PDF]

open access: yes, 2003
For years the majority of those individuals publicly indicted by the International Criminal Tribunal for the former Yugoslavia (ICTY) remained at large due to a lack of co-operation from states whose assistance was required to effect their arrest.
Sloan, J.
core   +1 more source

The Sombor index and coindex of two-trees [PDF]

open access: yes, 2022
The Sombor index of a graph $ G $, introduced by Ivan Gutman, is defined as the sum of the weights $ \sqrt{d_G(u)^2+d_G(v)^2} $ of all edges $ uv $ of $ G $, where $ d_G(u) $ denotes the degree of vertex $ u $ in $ G $.
Hechao Liu   +3 more
core   +2 more sources

The Sombor Index (Coindex) and Lanzhou Index (Coindex) of Some Graphs

open access: yesAxioms
In this paper, motivated by the recently introduced topological indices—the Sombor index, Sombor coindex, and Lanzhou index, we define a new index—the Lanzhou coindex of a graph.
Raxida Guji, Mihrigul Wali
doaj   +1 more source

Analysis of Spatio‐Temporal Characteristics of Drought in Serbia From 1961 to 2020 Using SPI and SPEI

open access: yesInternational Journal of Climatology, Volume 45, Issue 7, 15 June 2025.
The duration and severity of drought were determined and the trend of the indices for different accumulation periods, for 3 months (SPI3 and SPEI3), 6 months (SPI6 and SPEI6) and 12 months (SPI12 and SPEI12) were analyzed for 10 meteorological stations in Serbia in the period 1961–2020.
Lazar Filipović   +5 more
wiley   +1 more source

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