Results 11 to 20 of about 354,843 (264)

Randić Incidence Energy of Graphs

Transactions on Combinatorics, 2014
Let $G$ be a simple graph with vertex set $V(G) = \{v_1, v_2,\ldots, v_n\}$ and edge set $E(G) = \{e_1, e_2,\ldots, e_m\}$. Similar to the Randić matrix, here we introduce the Randić incidence matrix of a graph $G$, denoted by $I_R(G)$, which is defined as the $n\times m$ matrix whose $(i, j)$-entry is $(d_i)^{-\frac{1}{2}}$ if $v_i$ is incident to ...
Gu, Ran, Huang, Fei, Li, Xueliang
openaire   +3 more sources

On two energy-like invariants of line graphs and related graph operations

Journal of Inequalities and Applications, 2016
For a simple graph G of order n, let μ 1 ≥ μ 2 ≥ ⋯ ≥ μ n = 0 $\mu_{1}\geq\mu_{2}\geq\cdots\geq\mu_{n}=0$ be its Laplacian eigenvalues, and let q 1 ≥ q 2 ≥ ⋯ ≥ q n ≥ 0 $q_{1}\geq q_{2}\geq\cdots\geq q_{n}\geq0$ be its signless Laplacian eigenvalues.
Xiaodan Chen, Yaoping Hou, Jingjian Li
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On incidence energy of a graph

Linear Algebra and its Applications, 2009
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Gutman, Ivan, Kiani, Dariush, Mirzakhah, Maryam, Zhou, Bo   +3 more
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Relationship Between the Incidence of Deep Vein Thrombosis During Hospitalization and the Energy of Injury in Tibial Plateau Fractures

Clinical and Applied Thrombosis/Hemostasis, 2020
This study aimed to investigate the relationship between the incidence of deep vein thrombosis (DVT) during hospitalization and the energy of injury in tibial plateau fractures (TPFs).
Li Jiahao MD, Zhang Kun MD, Zhang Binfei MD, Zhuang Yan MD, Xue Hanzhong MD, Qu Shuangwei MD, Fei Chen MD, Yang Na MD, Tian Ding MD, Wang Pengfei MD   +9 more
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Epidemiology of trauma in the subarctic regions of the Nordic countries

BMC Emergency Medicine, 2022
Background The northern regions of the Nordic countries have common challenges of sparsely populated areas, long distances, and an arctic climate. The aim of this study was to compare the cause and rate of fatal injuries in the northernmost area of the ...
Tine Steinvik, Lasse Raatiniemi, Brynjólfur Mogensen, Guðrún B. Steingrímsdóttir, Torfinn Beer, Anders Eriksson, Trond Dehli, Torben Wisborg, Håkon Kvåle Bakke   +8 more
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Inelastic energy loss of Ar ions scattered Al2O3 surface under grazing incidence

Фізика і хімія твердого тіла, 2021
In this paper presents the investigation of the surface Al2O3  by ion  scattering spectroscopy. The trajectory of small angle scattered ions calculated by the method of binary collision approximation.  It was found dependence of inelastic energy loss and
A.S. Ashirov, M.K. Qurbanov, I.U. Tangribergenov, M.K. Karimov, K.U. Otabaeva   +4 more
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On incidence energy of graphs

Linear Algebra and its Applications, 2014
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Das, Kinkar Ch., Gutman, Ivan
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Some improved bounds on two energy-like invariants of some derived graphs

Open Mathematics, 2019
Given a simple graph G, its Laplacian-energy-like invariant LEL(G) and incidence energy IE(G) are the sum of square root of its all Laplacian eigenvalues and signless Laplacian eigenvalues, respectively. This paper obtains some improved bounds on LEL and
Cui Shu-Yu, Tian Gui-Xian
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Nutritional deficiencies in low-sociodemographic-index countries: a population-based study

Frontiers in Nutrition, 2023
BackgroundWe aimed to estimate the burden of nutritional deficiency according to sex and age in countries with a low sociodemographic index (SDI).MethodsFollowing the methods of the Global Burden of Diseases, Injuries, and Risk Factors Study 2019 ...
Huansong Li, Huiming Ren, Xu Guo, Zhu Chen   +3 more
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The epidemiology of low- and high-energy distal radius fracture in middle-aged and elderly men and women in Southern Norway. [PDF]

PLoS ONE, 2012
BACKGROUND: Distal radius is one of the most frequent sites for fractures in the elderly population. Despite this, there is a paucity of epidemiological data for distal radius fracture, in particular, distinguishing between high- and low-energy fractures.
Andreas P Diamantopoulos, Gudrun Rohde, Irene Johnsrud, Inger M Skoie, Marc Hochberg, Glenn Haugeberg   +5 more
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