منابع مشابه
On the Graovac-Ghorbani index
For the edge e = uv of a graph G, let nu = n(u|G) be the number of vertices of G lying closer to the vertex u than to the vertex v and nv= n(v|G) can be defined simailarly. Then the ABCGG index of G is defined as ABC...
متن کاملComparison Between Zagreb Eccentricity Indices and the Eccentric Connectivity Index, the Second Geometric-arithmetic Index and the Graovac-Ghorbani Index
The concept of Zagreb eccentricity indices ( 1 E and 2 E ) was introduced in the chemical graph theory very recently. The eccentric connectivity index ( ) c ξ is a distance-based molecular structure descriptor that was used for mathematical modeling of biological activities of diverse nature. The second geometric-arithmetic index 2 ( ) GA was introduced in 2010, is found to be useful tool in QS...
متن کاملRetraction: Heidari, A.; Vedad, S.; Heidari, N.; Ghorbani, M. Flux Dynamics in Y358 Superconductors. Materials 2012, 5, 882-888.
It has been brought to our attention by a reader of Materials that substantial portions of this article [1] have been translated from another publication [2] without credit. After confirming this to be the case with the authors, we have determined that indeed this manuscript clearly violates our policy of originality of all material submitted for publication and the generally accepted ethics of...
متن کاملThe Determinants of Poverty in Informal Settlement Areas of Mashhad (Case Study: Shahid Ghorbani Quarter)
U rban poverty has long been a concern of urban and development debates, and has been an important focus in social science research. Informal settlement in Mashhad city is highlighted because of its wide spreading and severity. This study aimed to determine the causes of urban poverty in informal settlement regions. The data were collected from household level questionnaire in 2016 a...
متن کاملAn Improved UTD Based Model for the Multiple Building Diffraction of Plane Waves in Urban Environments by Using Higher Order Diffraction Coefficients
i * Corresponding Author, A. Tajvidy is with the Department of Electrical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran (e-mail: [email protected]). ii A. Ghorbani is with the Department of Electrical Engineering, Amirkabir University of Technology, Tehran, Iran (e-mail: [email protected]). iii M. Nasermoghaddasi is with the Department of Electrical Engin...
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ژورنال
عنوان ژورنال: Historia Mathematica
سال: 2002
ISSN: 0315-0860
DOI: 10.1006/hmat.2002.2361