Reports de recerca: Enviaments recents
Ara es mostren els items 1-12 de 403
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Software prototype for the Galileo ionospheric correction model: progress report
(2016-11-15)
Report de recerca
Accés obertThe document describing the particular ionospheric model developed for the Galileo satellite navigation system has been officially released [1]. Its publication allows GNSS receiver manufacturers to start the implementation ... -
Beacon Satellite Symposium: Session 5B - June 30th 2016: Radio occultation techniques and measurements
(2016-11-16)
Report de recerca
Accés obertDuring the Beacon Satellite Symposium, held in Trieste, Italy, between June 26 and July 1 2016, the JRC chaired the session 5B: Radio Occultation Techniques and Measurements. The corresponding abstract of the session is ... -
Stallings automata and applications : BGSMath graduate course
(2023-02-15)
Report de recerca
Accés obertThe theory of Stallings automata provides a neat geometric representation of subgroups of the free group, and constitutes the modern —and probably the most natural and fruitful — approach to their study. Moreover, if the ... -
State-of-art products for real time scintillation monitoring and consolidated requirements for the activity
(2022-12-15)
Report de recerca
Accés restringit per acord de confidencialitat -
On some rational piecewise linear rotations
(2023-06-30)
Report de recerca
Accés obertWe study the dynamics of the piecewise planar rotations $F_{\lambda}(z)=\lambda (z-H(z)), $ with $z\in\C$, $H(z)=1$ if $\mathrm{Im}(z)\ge0,$ $H(z)=-1$ if $\mathrm{Im}(z)<0,$ and $\lambda=\mathrm{e}^{i \alpha} \in\C$, being ... -
On the accumulation points of non-periodic orbits of a difference equation of fourth order
(2023-06-22)
Report de recerca
Accés obertIn this paper, we are interested in analyzing the dynamics of the fourth-order difference equation x_{n+4}=max{x_{n+3},x_{n+2},x_{n+1},0}-x_n, with arbitrary real initial conditions. We fully determine the accumulation ... -
Counting configurations of limit cycles and centers
(2023-04-10)
Report de recerca
Accés obertWe present several results on the determination of the number and distribution of limit cycles or centers for planar systems of differential equations. In most cases, the study of a recurrence is one of the key points of ... -
Splitting of separatrices for rapid degenerate perturbations of the classical pendulum
(2023-02-16)
Report de recerca
Accés obertIn this work we study the splitting distance of a rapidly perturbed pendulum H(x, y, t) = 1 2 y 2 + (cos(x) - 1) + µ(cos(x) - 1)g t e with g(t ) = P |k|>1 g [k] e ikt a 2p-periodic function and µ, e 1. Systems of this ... -
The Arnold conjecture for singular symplectic manifolds
(2022-12-02)
Report de recerca
Accés obertIn this article, we study the Hamiltonian dynamics on singular symplectic manifolds and prove the Arnold conjecture for a large class of bm-symplectic manifolds. More precisely, we prove a lower bound on the number 1-periodic ... -
How to avoid repetitions in lattice-based deniable zero-knowledge proofs
(2022-06-23)
Report de recerca
Accés obertInteractive zero-knowledge systems are a very important cryptographic primitive, used in many applications, especially when deniability (also known as non-transferability) is desired. In the lattice-based setting, the ... -
Hamiltonian facets of classical gauge theories on E-manifolds
(2022-09-21)
Report de recerca
Accés obertManifolds with boundary, with corners, b-manifolds and foliations model configuration spaces for particles moving under constraints and can be described as E-manifolds. E-manifolds were introduced in [NT01] and investigated ... -
Reduction theory for singular symplectic manifolds and singular forms on moduli spaces
(2022-05-25)
Report de recerca
Accés obertThe investigation of symmetries of b-symplectic manifolds and folded-symplectic manifolds is well-understood when the group under consideration is a torus (see, for instance, [GMPS, GLPR,GMW18a]forb-symplecticmanifoldsand ...
