Results 51 to 60 of about 740,582 (289)
Altitude of wheels and wheel-like graphs
Open Mathematics, 2010 Abstract An edge-ordering of a graph G=(V, E) is a one-to-one mapping f:E(G)→{1, 2, ..., |E(G)|}. A path of length k in G is called a (k, f)-ascent if f increases along the successive edges forming the path. The altitude α(G) of G is the greatest integer k such that for all edge-orderings f, G has a (k, f)-ascent.
Tomasz Dzido, Hanna Furmańczyk
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The spectral radius of graphs with no odd wheels
European Journal of Combinatorics, 2022 The odd wheel $W_{2k+1}$ is the graph formed by joining a vertex to a cycle of length $2k$. In this paper, we investigate the largest value of the spectral radius of the adjacency matrix of an $n$-vertex graph that does not contain $W_{2k+1}$. We determine the structure of the spectral extremal graphs for all $k\geq 2, k\not\in \{4,5\}$. When $k=2$, we
Sebastian M. Cioaba +2 more
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The Influence of Wheel/Rail Contact Conditions on the Microstructure and Hardness of Railway Wheels [PDF]
, 2014 The susceptibility of railway wheels to wear and rolling contact fatigue damage is influenced by the properties of the wheel material (microstructure and hardness).
Bevan, Adam +5 more
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Fundamental study of cornering limit characteristics during braking and driving
Nihon Kikai Gakkai ronbunshu, 2016 The G-G diagram is one way of expressing the cornering limit during braking or driving. When limit driving data is plotted on a graph with the 2 axes representing longitudinal acceleration and lateral acceleration, the shape of the graph indicates the ...
Hideki SAKAI
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A Novel Approach To Modelling And Simulation Of The Dynamic Behaviour Of The Wheel-Rail Interface [PDF]
, 2011 This paper presents a novel approach to modelling and simulation of the dynamic behaviour of rail-wheel interface. The proposed dynamic wheel-rail contact model comprises wheel-rail geometry and efficient solutions for normal and tangential contact ...
Gu, Fengshou +12 more
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Graph Complexes with Loops and Wheels [PDF]
, 2009 Motivated by the problem of deformation quantization we introduce and study directed graph complexes with oriented loops and wheels – differential graded (dg) wheeled props. We develop a new technique for computing cohomology groups of such graph complexes and apply it to several concrete examples such as the wheeled completion of the operad of ...
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Shock and Vibration, 2016 Bond graph theory is applied to the modeling and analysis of the vibration characteristics of the in-wheel motor driving vehicle. First, an 11-degree-of-freedom vibration model of the in-wheel motor driving vehicle is established based on bond graph, and
Di Tan, Qiang Wang
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On Antimagic Labeling for Some Families of Graphs
Ibn Al-Haitham Journal for Pure and Applied Sciences, 2023 Antimagic labeling of a graph with vertices and edges is assigned the labels for its edges by some integers from the set , such that no two edges received the same label, and the weights of vertices of a graph are pairwise distinct.
Noor K. Shawkat, Mohammed A. Ahmed
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Experimental and theoretical investigation of railway wheel squeal [PDF]
, 2007 The tangential contact forces that arise at the interface between the wheel of a railway vehicle and the rail provide all the traction, braking, and guidance required by the vehicle.
Hsu, S.S. +24 more
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The Distance Matrices of Some Graphs Related to Wheel Graphs
Journal of Applied Mathematics, 2013 LetDdenote the distance matrix of a connected graphG. The inertia ofDis the triple of integers (n+(D), n0(D), n-(D)), wheren+(D),n0(D), andn-(D)denote the number of positive, 0, and negative eigenvalues ofD, respectively. In this paper, we mainly study the inertia of distance matrices of some graphs related to wheel graphs and give a construction for ...
Xiaoling Zhang 0006, Chengyuan Song
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