Results 21 to 30 of about 375,055 (299)
Oriented incidence energy and threshold graphs
Filomat, 2011 Let G be a simple graph with n vertices and m edges. Let edges of G be given an arbitrary orientation, and let Q be the vertex-edge incidence matrix of such oriented graph. The oriented incidence energy of G is then the sum of singular values of Q.
Dragan Stevanovic
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Calibration and measurement of X-ray personal dose equivalent with a Hp(10) ionization chamber [PDF]
Nuclear Technology and Radiation Protection, 2021 The value of the personal dose equivalent at a 10 mm depth is to characterize the energy deposition of strong penetrating radiation in the human body and is derived by measurement of air kerma and application of conversion coefficients from the ISO ...
Xu Yang, Zhao Rui
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Economia & Região, 2021 This study aims to identify the regions with the most significant potential for implementing new plants and photovoltaic energy consumer units. In addition to these, verify the real and potential solar incidence, and identify remote self-consumption and ...
Emerson Zonel Inácio da Silva +2 more
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Environmental Challenges, 2021 This study aimed to investigate the relationship between energy-resource depletion, health and the Environmental Kuznets Curve (EKC) hypothesis in the panel for the Middle East and North Africa (MENA) countries over 2005-2017 period. To sturdy inferences,
Hamid Amirnejad +2 more
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On the Boundary of Incidence Energy and Its Extremum Structure of Tricycle Graphs
Frontiers in Physics, 2020 With the wide application of graph theory in circuit layout, signal flow chart and power system, more and more attention has been paid to the network topology analysis method of graph theory.
Hongyan Lu, Zhongxun Zhu
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On the maximum ABC index of bipartite graphs without pendent vertices
Open Chemistry, 2020 For a simple graph G, the atom–bond connectivity index (ABC) of G is defined as ABC(G) = ∑uv∈ E(G)d(u)+d(v)−2d(u)d(v), $\sum_{uv\in{}E(G)} \sqrt{\frac{d(u)+d(v)-2}{d(u)d(v)}},$where d(v) denotes the degree of vertex v of G.
Shao Zehui +4 more
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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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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
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Science Progress, 2023 To explore the propagation characteristics of acoustic emission (AE) signals in wood at different angles. The AE signals at different angles were obtained by changing the angle of incidence by sawing the inclined surfaces at different angles. The Zelkova
Ming Li +6 more
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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 +9 more
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