Results 61 to 70 of about 154,862 (311)

Engineering a Spin‐Orbit Bandgap in Graphene‐Tellurium Heterostructures

open access: yesAdvanced Functional Materials, EarlyView.
Tellurium intercalation in epitaxial graphene on Ir(111) enables the emergence of a spin–orbit‐induced bandgap with energy spin splitting. By combining STM, ARPES, spin‐resolved ARPES, and DFT, two structural phases are identified, both exhibiting tunable electronic doping.
Beatriz Muñiz Cano   +14 more
wiley   +1 more source

A new optimization-driven path planning method with probabilistic completeness for wheeled mobile robots

open access: yesMeasurement + Control, 2019
Wheeled mobile robots are widely utilized for environment-exploring tasks both on earth and in space. As a basis for global path planning tasks for wheeled mobile robots, in this study we propose a method for establishing an energy-based cost map.
Bo You   +4 more
doaj   +1 more source

Robust and Safe Autonomous Navigation for Systems With Learned SE(3) Hamiltonian Dynamics

open access: yesIEEE Open Journal of Control Systems, 2022
Stability and safety are critical properties for successful deployment of automatic control systems. As a motivating example, consider autonomous mobile robot navigation in a complex environment. A control design that generalizes to different operational
Zhichao Li, Thai Duong, Nikolay Atanasov
doaj   +1 more source

Atomic Size Misfit for Electrocatalytic Small Molecule Activation

open access: yesAdvanced Functional Materials, EarlyView.
This review explores the application and mechanisms of atomic size misfit in catalysis for small molecule activation, focusing on how structural defects and electronic properties can effectively lower the energy barriers of chemical bonds in molecules like H2O, CO2, and N2.
Ping Hong   +3 more
wiley   +1 more source

Schwinger-Dyson BRST-Symmetry and the Equivalence of Hamiltonian and Lagrangian Quantistion

open access: yes, 1993
Implementing the requirement that a field theory be invariant under Schwinger-Dyson BRST symmetry in the Hamiltonian formalism, we show the equivalence between Hamiltonian and Lagrangian BRST-formalism at the path integral level.
Alfaro   +24 more
core   +1 more source

Hamiltonian Paths in Some Classes of Grid Graphs

open access: yesJournal of Applied Mathematics, 2012
The Hamiltonian path problem for general grid graphs is known to be NP-complete. In this paper, we give necessary and sufficient conditions for the existence of Hamiltonian paths in L-alphabet, C-alphabet, F-alphabet, and E-alphabet grid graphs.
Fatemeh Keshavarz-Kohjerdi   +1 more
doaj   +1 more source

On hamiltonian chain saturated uniform hypergraphs [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2012
Graphs and ...
Aneta Dudek, Andrzej Zak
doaj   +1 more source

graph, Hamiltonian path, Hamiltonian cycle, Hamilton-connected graph, detour index, NP-complete problems, Platonic solids, convex polytopes

open access: yesAIMS Mathematics, 2021
Noise is regarded as an unavoidable component of digital image acquisition. Hence, noise removal has been considered as one of the fundamental tasks in the field of image processing. Accordingly, excellent results have been achieved by using second-order
Abdelgader Siddig   +3 more
doaj   +1 more source

Hamiltonian paths on Platonic graphs [PDF]

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2004
We develop a combinatorial method to show that the dodecahedron graph has, up to rotation and reflection, a unique Hamiltonian cycle. Platonic graphs with this property are called topologically uniquely Hamiltonian. The same method is used to demonstrate topologically distinct Hamiltonian cycles on the icosahedron graph and to show that a regular graph
openaire   +2 more sources

Computational Modeling of Reticular Materials: The Past, the Present, and the Future

open access: yesAdvanced Materials, EarlyView.
Reticular materials are advanced materials with applications in emerging technologies. A thorough understanding of material properties at operating conditions is critical to accelerate the deployment at an industrial scale. Herein, the status of computational modeling of reticular materials is reviewed, supplemented with topical examples highlighting ...
Wim Temmerman   +3 more
wiley   +1 more source

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