Results 71 to 80 of about 4,385,040 (261)

The expected values for the Gutman index, Schultz index, multiplicative degree-Kirchhoff index and additive degree-Kirchhoff index of a random cyclooctatetraene chain [PDF]

open access: yes, 2021
In this paper, we mainly solve the explicit analytical expressions for the expected values of the Gutman index, Schultz index, multiplicative degree-Kirchhoff index and additive degree-Kirchhoff index of a random cyclooctatetraene chain with $n$ octagons.
Xianya Geng, Jinfeng Qi, Minjie Zhang
openaire   +1 more source

A Review on Sensor Technologies, Control Approaches, and Emerging Challenges in Soft Robotics

open access: yesAdvanced Robotics Research, EarlyView.
This review provides an introspective of sensors and controllers in soft robotics. Initially describing the current sensing methods, then moving on to the control methods utilized, and finally ending with challenges and future directions in soft robotics focusing on the material innovations, sensor fusion, and embedded intelligence for sensors and ...
Ean Lovett   +5 more
wiley   +1 more source

Note on degree Kirchhoff index of graphs [PDF]

open access: yesTransactions on Combinatorics, 2013
Bounds for the degree Kirchhoff index of the line and para-line graphs are determined.The special case of regular graphs is analyzed in due detail.
Mardjan Hakimi-Nezhaad   +2 more
doaj  

Generalized Characteristic Polynomials of Join Graphs and Their Applications

open access: yesDiscrete Dynamics in Nature and Society, 2017
The Kirchhoff index of G is the sum of resistance distances between all pairs of vertices of G in electrical networks. LEL(G) is the Laplacian-Energy-Like Invariant of G in chemistry.
Pengli Lu, Ke Gao, Yang Yang
doaj   +1 more source

Several Topological Indices of Two Kinds of Tetrahedral Networks

open access: yesJournal of Mathematics, 2021
Tetrahedral network is considered as an effective tool to create the finite element network model of simulation, and many research studies have been investigated.
Jia-Bao Liu, Lu-Lu Fang
doaj   +1 more source

Ferroelectric Devices for In‐Memory and In‐Sensor Computing

open access: yesAdvanced Science, EarlyView.
Inspired by biological systems, in‐memory and in‐sensor computing overcome von Neumann bottlenecks. Ferroelectric devices can mimic synaptic functions and sense stimuli like light or force, therefore are ideal for these paradigms. This review introduces the ferroelectric devices applied for in‐memory and in‐sensor computing, covering their structures ...
Hong Fang   +5 more
wiley   +1 more source

Global attractors of the degenerate fractional Kirchhoff wave equation with structural damping or strong damping

open access: yesAdvances in Nonlinear Analysis, 2022
This article deals with the degenerate fractional Kirchhoff wave equation with structural damping or strong damping. The well-posedness and the existence of global attractor in the natural energy space by virtue of the Faedo-Galerkin method and energy ...
Yang Wenhua, Zhou Jun
doaj   +1 more source

A formula for the Kirchhoff index

open access: yesInternational Journal of Quantum Chemistry, 2008
AbstractWe show here that the Kirchhoff index of a network is the average of the Wiener capacities of its vertices. Moreover, we obtain a closed‐form formula for the effective resistance between any pair of vertices when the considered network has some symmetries, which allows us to give the corresponding formulas for the Kirchhoff index.
Bendito Pérez, Enrique   +3 more
openaire   +2 more sources

Zero Thermal Expansion and Local Structure in KxMnxFe2‐xMo3O12‐Based Materials

open access: yesAdvanced Science, EarlyView.
Local structure engineering via ion insertion drives local structural transformation from low‐symmetry P21/a to high‐symmetry R‐3c, enhancing structural flexibility and realizing a transition from positive thermal expansion to wide‐temperature‐range zero thermal expansion in KxMnxFe2‐xMo3O12‐based materials.
Gongsen He   +13 more
wiley   +1 more source

Computing the Normalized Laplacian Spectrum and Spanning Tree of the Strong Prism of Octagonal Network

open access: yesJournal of Mathematics, 2022
Spectrum analysis and computing have expanded in popularity in recent years as a critical tool for studying and describing the structural properties of molecular graphs. Let On2 be the strong prism of an octagonal network On.
Yasir Ahamad   +5 more
doaj   +1 more source

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