Producció científica
http://hdl.handle.net/11201/3631
Fri, 03 Apr 2020 15:06:45 GMT2020-04-03T15:06:45ZAutomart network
http://hdl.handle.net/11201/151941
Automart network
Oliver-Codina, G.
[eng] Automar is a research network in automatic control and robotics for the marine industry and marine sciences. Automar brings together scholars from universities and research centres, encouraging knowledge exchange, training and cooperation among the different members of the scientific and industrial community. To that end, the members of the network organize scientific and technical meetings, courses, tutorials and conferences on a regular basis. Since its initial steps in 2002, Automar has organized more than ten events, promoting scientific education or cooperation and disseminating know-how among its partners, industrial companies and marine technology end-users. Throughout that time, the size of the network has progressively expanded to include more than fifteen research groups.
http://hdl.handle.net/11201/151941Aggregation of partial T-indistinguishability operators and partial pseudo-metrics
http://hdl.handle.net/11201/151940
Aggregation of partial T-indistinguishability operators and partial pseudo-metrics
Calvo Sánchez, Tomasa; Fuster-Parra, P.
[eng] In this contribution we address our attention on the aggregation of partial T-indistinguishability operators (relations) and partial pseudo-metrics. A characterization of those functions that allow to merge a collection of partial T-indistinguishability operators into a new one was provided by Calvo et al. in [10]by means of (T, TM)-tuples, but here we present another characterization in terms of (+, max)-tuples. Also, we analyze the aggregation of a collection (Ei) ni=1of partial Ti-indistinguishability operators. Moreover, we provide that a generalized inter-exchange composition functions condition is a sufficient condition to guarantee that a function merges partial Ti-indistinguishability operators into a single one. In addition, we give different expressions of those aggregation functions that are object of our study, most of them are defined by means of the additive generators of the corresponding t-norms and another particular function. We see that the functions, that merge partial S-pseudo-metrics into a new one, are related to the functions that aggregate partial pseudo-metrics. Finally, we show the relation between the functions, that merge partial T-indistinguishability operators and the functions that preserve the partial T^∗-pseudo-metrics in the aggregation process.
http://hdl.handle.net/11201/151940Characterizing quasi-metric aggregation functions
http://hdl.handle.net/11201/151939
Characterizing quasi-metric aggregation functions
Miñana, Juan-José; Valero, Oscar
[eng] In this paper, we study those functions that allows us to combine a family of quasi-metrics, defined all of them on the same set, into a single one, which will be called quasi-metric aggregation functions. In particular, we characterize the quasi-metric aggregation functions and, in addition, we discuss a few of their properties. Moreover, a few methods to discard those functions that are useless as quasi-metric aggregation functions are introduced. Throughout the paper, different examples justify and illustrate the results presented. Finally, two possible fields where the developed theory can be useful are exposed.
http://hdl.handle.net/11201/151939Alien limit cycles in Abel equations
http://hdl.handle.net/11201/151938
Alien limit cycles in Abel equations
Álvarez, M.J.; Bravo, J.L.; Fernández, M.; Prohens, R.
[eng] Periodic solutions, Abel equation, Alien limit cycles, Abelian integrals, Bifurcation', abstract = 'The aim of this paper is to study the existence of limit cycles for a family of generalized Abel equations x′=A(t)xm+B(t)xn, m,n≥2. Under certain assumptions, it is proved that there exists a non-trivial limit cycle. This limit cycle has the characteristic that it arises from neither a Hopf bifurcation nor a perturbation of periodic orbits in a period annulus around the centre at the origin.
http://hdl.handle.net/11201/151938