Search results for "unique"
showing 10 items of 268 documents
Classifiers in Sinitic languages: From individuation to definiteness-marking
2012
Abstract This article examines the distribution and interpretation of the bare classifier phrase [Cl+N] in three Sinitic languages of Mandarin, Wu and Cantonese. We show that [Cl+N] can be interpreted as definite or indefinite depending on pragmatic factors related to information structure and word order. Syntactically, we claim that indefinite [Cl+N] has the maximal projection of ClP and that definite [Cl+N] is a DP, where the D head is filled by the classifier via Cl-to-D raising. Semantically, we claim that indefinite [Cl+N] is predicative, denoting sets of atomic entities and that definite [Cl+N] is derived from indefinite [Cl+N] by lifting it from predicates to Generalized Quantifiers.…
Discovery privacy threats via device de-anonymization in LoRaWAN
2021
LoRaWAN (Long Range WAN) is one of the well-known emerging technologies for the Internet of Things (IoT). Many IoT applications involve simple devices that transmit their data toward network gateways or access points that, in their turn, redirect data to application servers. While several security issues have been addressed in the LoRaWAN specification v1.1, there are still some aspects that may undermine privacy and security of the interconnected IoT devices. In this paper, we tackle a privacy aspect related to LoRaWAN device identity. The proposed approach, by monitoring the network traffic in LoRaWAN, is able to derive, in a probabilistic way, the unique identifier of the IoT device from…
Convergence of a finite volume scheme for the compressible Navier–Stokes system
2019
We study convergence of a finite volume scheme for the compressible (barotropic) Navier–Stokes system. First we prove the energy stability and consistency of the scheme and show that the numerical solutions generate a dissipative measure-valued solution of the system. Then by the dissipative measure-valued-strong uniqueness principle, we conclude the convergence of the numerical solution to the strong solution as long as the latter exists. Numerical experiments for standard benchmark tests support our theoretical results.
Discretization of harmonic measures for foliated bundles
2012
We prove in this note that there is, for some foliated bundles, a bijective correspondance between Garnett's harmonic measures and measures on the fiber that are stationary for some probability measure on the holonomy group. As a consequence, we show the uniqueness of the harmonic measure in the case of some foliations transverse to projective fiber bundles.
Neither a toda virolla nor tumbados a la bartola. A corpus analysis of phraseologically bound spanish words
2021
[EN] This article presents results on the Spanish phraseologically bound words (PLF), also known as cranberry words, based on a corpus analysis. If up to now the different Spanish PLF had been collected introspectively, this article presents a list of the Spanish PLF indicating the phraseological fixation index (IFF) of each one of them in the phraseological unit (UF) that contains them and ordered by the weighted phraseological fixation index (IFFP). To do this, it has been necessary to obtain from the corpus the total number of occurrences of the PLF (NPLF) and to analyse the fixation of these elements both inside the UF or the UFS that contain them (FFPLF) and outside the UF, in their fr…
Simultaneously recovering potentials and embedded obstacles for anisotropic fractional Schrödinger operators
2017
Let \begin{document}$A∈{\rm{Sym}}(n× n)$\end{document} be an elliptic 2-tensor. Consider the anisotropic fractional Schrodinger operator \begin{document}$\mathscr{L}_A^s+q$\end{document} , where \begin{document}$\mathscr{L}_A^s: = (-\nabla·(A(x)\nabla))^s$\end{document} , \begin{document}$s∈ (0, 1)$\end{document} and \begin{document}$q∈ L^∞$\end{document} . We are concerned with the simultaneous recovery of \begin{document}$q$\end{document} and possibly embedded soft or hard obstacles inside \begin{document}$q$\end{document} by the exterior Dirichlet-to-Neumann (DtN) map outside a bounded domain \begin{document}$Ω$\end{document} associated with \begin{document}$\mathscr{L}_A^s+q$\end{docume…
Partial Data Problems and Unique Continuation in Scalar and Vector Field Tomography
2022
AbstractWe prove that if P(D) is some constant coefficient partial differential operator and f is a scalar field such that P(D)f vanishes in a given open set, then the integrals of f over all lines intersecting that open set determine the scalar field uniquely everywhere. This is done by proving a unique continuation property of fractional Laplacians which implies uniqueness for the partial data problem. We also apply our results to partial data problems of vector fields.
Wardowski conditions to the coincidence problem
2015
In this article we first discuss the existence and uniqueness of a solution for the coincidence problem: Find p ∈ X such that Tp = Sp, where X is a nonempty set, Y is a complete metric space, and T, S:X → Y are two mappings satisfying a Wardowski type condition of contractivity. Later on, we will state the convergence of the Picard-Juncgk iteration process to the above coincidence problem as well as a rate of convergence for this iteration scheme. Finally, we shall apply our results to study the existence and uniqueness of a solution as well as the convergence of the Picard-Juncgk iteration process toward the solution of a second order differential equation. Ministerio de Economía y Competi…
Carleman estimates for sub-Laplacians on Carnot groups
2022
In this note, we establish a new Carleman estimate with singular weights for the sub-Laplacian on a Carnot group $\mathbb G$ for functions satisfying the discrepancy assumption in (2.16) below. We use such an estimate to derive a sharp vanishing order estimate for solutions to stationary Schr\"odinger equations.
Collège unique
2007
Le collège unique, après une gestation progressive dans les textes, peine à se réaliser pleinement par des scolarités communes à tous les élèves. Faut-il pour autant y renoncer ?