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New contributions to the Hamiltonian and Lagrangian contact formalisms for dissipative mechanical systems and their symmetries
(2020-06-01)
Article
Restricted access - publisher's policyWe provide new insights into the contact Hamiltonian and Lagrangian formulations of dissipative mechanical systems. In particular, we state a new form of the contact dynamical equations, and we review two recently presented ... -
A canonical realization of the Weyl BMS symmetry
(Elsevier, 2020-12-10)
Article
Open Access -
Group inverse matrix of the normalized Laplacian on subdivision networks
(2020)
Article
Open AccessIn this paper we consider a subdivision of a given network and we show how the group inverse matrix of the normalized laplacian of the subdivision network is related to the group inverse matrix of the normalized laplacian ... -
Embeddability and rate identifiability of Kimura 2-parameter matrices
(2020-03-01)
Article
Restricted access - publisher's policyDeciding whether a substitution matrix is embeddable (i.e. the corresponding Markov process has a continuous-time realization) is an open problem even for 4×4 matrices. We study the embedding problem and rate identifiability ... -
Damage diagnosis for offshore wind turbine foundations based on the fractal dimension
(2020-10-05)
Article
Open AccessCost-competitiveness of offshore wind depends heavily in its capacity to switch preventive maintenance to condition-based maintenance. That is, to monitor the actual condition of the wind turbine (WT) to decide when and ... -
Rigidity of cotangent lifts and integrable systems
(2020-11)
Article
Open AccessIn this article we generalize a theorem by Palais on the rigidity of compact group actions to cotangent lifts. We use this result to prove rigidity for integrable systems on symplectic manifolds including systems with ... -
Embeddability of Kimura 3ST Markov matrices
(2018-05-14)
Article
Open AccessIn this note, we characterize the embeddability of generic Kimura 3ST Markov matrices in terms of their eigenvalues. As a consequence, we are able to compute the volume of such matrices relative to the volume of all Markov ... -
The uncoupling limit of identical Hopf bifurcations with an application to perceptual bistability
(2019-12-01)
Article
Open AccessWe study the dynamics arising when two identical oscillators are coupled near a Hopfbifurcation where we assume a parameter uncouples the system at = 0. Using anormal form forN= 2 identical systems undergoing Hopf bifurcation, ... -
Some properties for bisemivalues on bicooperative games
(2020-02-29)
Article
Restricted access - publisher's policyIn this work, we focus on bicooperative games, a variation of the classic cooperative games, and investigate the conditions for the coefficients of the bisemivalues—a generalization of semivalues for cooperative games—necessary ... -
Fixed subgroups and computation of auto-fixed closures in free-abelian times free groups
(2020-04-01)
Article
Open AccessThe classical result by Dyer–Scott about fixed subgroups of finite order automor-phisms of Fnbeing free factors of Fn is no longer true inZm×Fn. Within this more generalcontext, we prove a relaxed version in the spirit of ... -
Vibration-based detection and classification of structural changes using principal component analysis and t-distributed stochastic neighbor embedding
(Wiley, 2020-03-05)
Article
Open AccessThis paper describes a structural health monitoring strategy to detect and classify structural changes in structures that can be equipped with sensors. The proposed approach is based on the t-distributed stochastic neighbor ... -
Sufficient conditions for a digraph to admit a (1,=l)-identifying code
(2019)
Article
Open AccessA (1, = `)-identifying code in a digraph D is a subset C of vertices of D such that all distinct subsets of vertices of cardinality at most ` have distinct closed in-neighbourhoods within C. In this paper, we give some ...
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