Results for "Vanesa Daza"

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LASER: Lightweight And SEcure Remote keyless entry protocol (Extended version)May 14 2019May 15 2019Since Remote Keyless Entry (RKE) systems started to be widely used, several vulnerabilities in their protocols have been found. Attacks such as jamming-and-replay attacks and relay attacks are still effective against most recent RKE systems, even when ... More
Performance Analysis of a Multiuser Multi-Packet Transmission System for WLANs in Non-Saturation ConditionsJul 15 2012Oct 20 2013Multiuser Multi-Packet Transmission (MPT) from an Access Point (AP) equipped with multiple antennas to multiple single-antenna nodes can be achieved by exploiting the spatial dimension of the channel. In this paper we present a queueing model to analytically ... More
LASER: Lightweight And SEcure Remote keyless entry protocol (Extended version)May 14 2019Since Remote Keyless Entry (RKE) systems started to be widely used, several vulnerabilities in their protocols have been found. Attacks such as jamming-and-replay attacks and relay attacks are still effective against most recent RKE systems, even when ... More
Irreducible Continuous Representations of the Simple Linearly Compact n-Lie Superalgebra of type WJan 04 2016Feb 15 2016In the present paper we classify all irreducible continuous representations of the simple linearly compact n-Lie superalgebra of type W. The classification is based on a bijective correspondence between the continuous representations of the n-Lie algebras ... More
Person as Population: A Longitudinal View of Single-Subject Causal Inference for Analyzing Self-Tracked Health DataJan 10 2019Jan 22 2019Single-subject health data are becoming increasingly available thanks to advances in self-tracking technology (e.g., wearable devices, mobile apps, sensors, implants). Many users and health caregivers seek to use such observational time series data to ... More
Quasifinite representations of the Lie superalgebra of quantum pseudo differential operatorsJun 22 2007In this paper we extend general results obtained by V. Kac and J. Liberati, in "Unitary quasifinite representations of $W_\infty$", (Letters Math. Phys., 53 (2000), 11-27), for quasifinite highest weight representations of $\Z$-graded Lie algebras to ... More
Offshore wind energy climate projection using UPSCALE climate data under the RCP8.5 emission scenarioOct 07 2015Recently it was demonstrated how climate data can be utilized to estimate regional wind power densities. In particular it was shown that the quality of the global scale estimate compared well with regional high resolution studies and a link between surface ... More
Irreducible Continuous Representations of the Simple Linearly Compact n-Lie Superalgebra of type $S$Apr 14 2016In the present paper we classify all irreducible continuous representations of the simple linearly compact n-Lie superalgebra of type S. The classification is based on a bijective correspondence between the continuous representations of the n-Lie algebras ... More
Measuring educational attainment as a continuous variable: a new database (1970-2010)Aug 06 2015Jun 07 2016In this paper, we introduce a new comprehensive data set on educational attainment and inequality measures of education for 142 countries over the period 1970 to 2010. Most of the previous attempts to measure educational attainment have treated education ... More
A Liouville theorem for some Bessel generalized operatorsAug 18 2017Aug 22 2017In this paper we establish a Liouville theorem in $\mathcal{H'}_{\mu}$ for a wider class of operators in $(0,\infty)^{n}$ that generalizes the $n$-dimensional Bessel operator. We will present two different proofs, based in two representation theorems ... More
Estimation of income inequality from grouped dataAug 29 2018Grouped data in form of income shares have been conventionally used to estimate income inequality due to the lack of availability of individual records. Most prior research on economic inequality relies on lower bounds of inequality measures in order ... More
A variation of the Dragulescu-Yakovenko income modelJun 19 2014In the context of the Dragulescu-Yakovenko (2000) model, we show that empirical income distribution with truncated datasets, cannot be properly modeled by the one-parameter exponential distribution. However, a truncated version characterized by an exponential ... More
Sidon sets and $C_4$-saturated graphsOct 11 2018Nov 14 2018The problem of determining the Tur\'an number of $C_4$ is a well studied problem that dates back to a paper of Erd\"os from 1938. It is known that Sidon sets can be used to construct $C_4$-free graphs. If $A$ is a Sidon set in the abelian group $X$, the ... More
Aggregation of Dependent Risks in Mixtures of Exponential Distributions and ExtensionsApr 30 2017The distribution of the sum of dependent risks is a crucial aspect in actuarial sciences, risk management and in many branches of applied probability. In this paper, we obtain analytic expressions for the probability density function (pdf) and the cumulative ... More
On-a-chip biosensing based on all-dielectric nanoresonatorsApr 21 2017Nanophotonics has become a key enabling technology in biomedicine with great promises in early diagnosis and less invasive therapies. In this context, the unique capability of plasmonic noble metal nanoparticles to concentrate light on the nanometer scale ... More
Determining the size of the protonMar 02 2012Aug 02 2012A measurement of the Lamb shift of 49,881.88(76) GHz in muonic hydrogen in conjunction with theoretical estimates of the proton structure effects was recently used to deduce an accurate but rather small radius of the proton. Such an important shift in ... More
Anomalous lightcurves of young tilted exoringsAug 15 2017Apr 11 2018Despite the success of discovering transiting exoplanets, several recently observed objects (e.g. KIC-8462852, J1407 and PDS-110) exhibit unconventional transit signals, whose appropriate interpretation in terms of a spherical single body has been challenging, ... More
Breit Equation with Form Factors in the Hydrogen AtomAug 25 2010Nov 21 2011The Breit equation with two electromagnetic form-factors is studied to obtain a potential with finite size corrections. This potential with proton structure effects includes apart from the standard Coulomb term, the Darwin term, retarded potentials, spin-spin ... More
Locally computable approximations for spectral clustering and absorption times of random walksOct 22 2008We address the problem of determining a natural local neighbourhood or "cluster" associated to a given seed vertex in an undirected graph. We formulate the task in terms of absorption times of random walks from other vertices to the vertex of interest, ... More
Semi-Supervised Recognition of the Diploglossus Millepunctatus Lizard Species using Artificial Vision AlgorithmsNov 09 2016Animal biometrics is an important requirement for monitoring and conservation tasks. The classical animal biometrics risk the animals' integrity, are expensive for numerous animals, and depend on expert criterion. The non-invasive biometrics techniques ... More
Green Peas in X-raysOct 22 2018Reionization of the Universe after the Dark Ages played an important role in the galaxy formation and observability. The source of the ionizing radiation is, however, not yet clearly determined. The main contribution is commonly attributed to strong AGN ... More
Risks aggregation in multivariate dependent Pareto distributionsJun 01 2015In this paper we obtain closed expressions for the probability distribution function, when we consider aggregated risks with multivariate dependent Pareto distributions. We work with the dependent multivariate Pareto type II proposed by Arnold (1983, ... More
Ascertaining when a basin is Wada: the merging methodMar 09 2018Jun 18 2018Trying to imagine three regions separated by a unique boundary seems a difficult task. However, this is exactly what happens in many dynamical systems showing Wada basins. Here, we present a new perspective on the Wada property: A Wada boundary is the ... More
Sidon sets and $C_4$-saturated graphsOct 11 2018Mar 18 2019The problem of determining the Tur\'an number of $C_4$ is a well studied problem that dates back to a paper of Erd\"os from 1938. It is known that Sidon sets can be used to construct $C_4$-free graphs. If $\A$ is a Sidon set in the abelian group $X$, ... More
Wada property in systems with delayMay 18 2016May 19 2016Delay differential equations take into account the transmission time of the information. These delayed signals may turn a predictable system into chaotic, with the usual fractalization of the phase space. In this work, we study the connection between ... More
How is the Monoclonal Antibodies Kinetic Affected by Changes of Their Physical Parameters?Sep 24 2010The study of monoclonal antibodies (MAb) is a field of great interest to science medicine, for example, anti-TNF agents (infliximab and adalimumab) represent an important tool for the management of autoimmune and inflammatory disorders. In this work we ... More
Scaling notifications beyond alerts: from subtly drawing attention up to forcing the user to take actionAug 06 2018New computational devices, in particular wearable devices, offer the unique property of always being available and thus to be able to constantly update the user with information, such as by notifications. While research has been done in sophisticated ... More
The saddle-straddle method to test for Wada basinsJan 30 2019First conceived as a topological construction, Wada basins abound in dynamical systems. Basins of attraction showing the Wada property possess the particular feature that any small perturbation of an initial condition lying on the boundary can lead the ... More
The electrical conductivity tensor of $β$-Ga2O3 analyzed by van der Pauw measurements: Inherent anisotropy, off-diagonal element, and the impact of grain boundariesJun 21 2018Mar 12 2019The semiconducting oxide $\beta$-Gallium Oxide ($\beta$-Ga$_{2}$O$_{3}$) possesses a monoclinic unit cell whose low symmetry generally leads to anisotropic physical properties. For example, its electrical conductivity is generally described by a polar ... More
A Bayesian approach to the g-formulaDec 15 2015Epidemiologists often wish to estimate quantities that are easy to communicate and correspond to the results of realistic public health scenarios. Methods from causal inference can answer these questions. We adopt the language of potential outcomes under ... More
Quantum anomaly and thermodynamics of one-dimensional fermions with three-body interactionsFeb 05 2018We show that a system of three species of one-dimensional fermions, with an attractive three-body contact interaction, features a scale anomaly directly related to the anomaly of two-dimensional fermions with two-body forces. We show, furthermore, that ... More
Computing complex horseshoes by means of piecewise mapsJun 18 2018Nov 23 2018A systematic procedure to numerically compute a horseshoe map is presented. This new method uses piecewise functions and expresses the required operations by means of elementary transformations, such as translations, scalings, projections and rotations. ... More
Microquasars as heating sources of the intergalactic medium during reionisation of the UniverseNov 17 2017The effect of the primeval sources of radiation and particles on the thermodynamical state of the intergalactic medium during the Epoch of Reionisation is still unclear. In this work, we explore the contribution of electrons accelerated in the jets of ... More
Uniformly convex and smooth Banach spaces and Lp-boundedness properties of Littlewood-Paley and area functions associated with semigroupsApr 11 2019In this paper we obtain new characterizations of the uniformly convex and smooth Banach spaces. These characterizations are established by using Lp-boundedness properties of Littlewood-Paley functions and area integrals associated with heat semigroups ... More
The electrical conductivity tensor of $β$-Ga$_{2}$O$_{3}$ analyzed by van der Pauw measurements: Inherent anisotropy, off-diagonal element, and the impact of grain boundariesJun 21 2018The semiconducting oxide $\beta$-Gallium Oxide ($\beta$-Ga$_{2}$O$_{3}$) possesses a monoclinic unit cell whose low symmetry generally leads to anisotropic physical properties. For example, its electrical conductivity is generally described by a polar ... More
Emergent explosive synchronization in adaptive complex networksNov 07 2017Adaptation plays a fundamental role in shaping the structure of a complex network and improving its functional fitting. Even when increasing the level of synchronization in a biological system is considered as the main driving force for adaptation, there ... More
Chaotic dynamics and fractal structures in experiments with cold atomsFeb 01 2017We use tools from nonlinear dynamics to the detailed analysis of cold atom experiments. A powerful example is provided by the recent concept of basin entropy which allows to quantify the final state unpredictability that results from the complexity of ... More
A Markov Random Field and Active Contour Image Segmentation Model for Animal Spots PatternsOct 26 2015Non-intrusive biometrics of animals using images allows to analyze phenotypic populations and individuals with patterns like stripes and spots without affecting the studied subjects. However, non-intrusive biometrics demand a well trained subject or the ... More
Wada structures in a binary black hole systemJul 27 2018Oct 30 2018A key goal of the Event Horizon Telescope is to observe the shadow cast by a black hole. Recent simulations have shown that binary black holes, the progenitors of gravitational waves, present shadows with fractal structure. Here we study the binary shadow ... More
Waves of desertification in a competitive ecosystemJan 31 2019We study a mathematical model inspired by a common scenario in northern Patagonia consisting of humans and their livestock living together with native wildlife. The main production system in this area is sheep farming, which due to wrong historical management ... More
Virial expansion for the Tan contact and Beth-Uhlenbeck formula from 2D SO(2,1) anomaliesJan 24 2018Apr 02 2018The relationship between 2D $SO(2,1)$ conformal anomalies in nonrelativistic systems and the virial expansion is explored using recently developed path-integral methods. In the process, the Beth-Uhlenbeck formula for the shift of the second virial coefficient ... More
A computational geometry method for the inverse scattering problemJul 23 2018In this paper we demonstrate a computational method to solve the inverse scattering problem for a star-shaped, smooth, penetrable obstacle in 2D. Our method is based on classical ideas from computational geometry. First, we approximate the support of ... More
A Quantum Field-Theoretical Perspective on Scale Anomalies in 1D systems with Three-Body InteractionsAug 21 2018We analyze, from a canonical quantum field theory perspective, the problem of one-dimensional particles with three-body attractive interactions, which was recently shown to exhibit a scale anomaly identical to that observed in two-dimensional systems ... More
Basin entropy: a new tool to analyze uncertainty in dynamical systemsMay 08 2016Sep 01 2016In nonlinear dynamics, basins of attraction link a given set of initial conditions to its corresponding final states. This notion appears in a broad range of applications where several outcomes are possible, which is a common situation in neuroscience, ... More
A Sequence-to-Sequence Model for Semantic Role LabelingJul 09 2018We explore a novel approach for Semantic Role Labeling (SRL) by casting it as a sequence-to-sequence process. We employ an attention-based model enriched with a copying mechanism to ensure faithful regeneration of the input sequence, while enabling interleaved ... More
A Quantum Field-Theoretical Perspective on Scale Anomalies in 1D systems with Three-Body InteractionsAug 21 2018May 16 2019We analyze, from a canonical quantum field theory perspective, the problem of one-dimensional particles with three-body attractive interactions, which was recently shown to exhibit a scale anomaly identical to that observed in two-dimensional systems ... More
Posterior distribution existence and error control in Banach spaces in the Bayesian approach to UQ in inverse problemsDec 08 2017Oct 12 2018We generalize the results of \cite{Capistran2016} on expected Bayes factors (BF) to control the numerical error in the posterior distribution to an infinite dimensional setting when considering Banach functional spaces and now in a prior setting. The ... More
Quantum anomaly and thermodynamics of one-dimensional fermions with antisymmetric two-body interactionsAug 14 2019A system of two-species, one-dimensional fermions, with an attractive two-body interaction of the derivative-delta type, features a scale anomaly. In contrast to the well-known two-dimensional case with contact interactions, and its one-dimensional cousin ... More
Nanopore Sequencing of the phi X 174 genomeJun 17 2014Jun 18 2014Nanopore sequencing of DNA is a single-molecule technique that may achieve long reads, low cost, and high speed with minimal sample preparation and instrumentation. Here, we build on recent progress with respect to nanopore resolution and DNA control ... More
Helium ordered trapping in arsenolite under compression: Synthesis of He2As4O6Feb 15 2015The compression of arsenolite (cubic As2O3) has been studied from a joint experimental and theoretical point of view. Experimental X-ray diffraction and Raman scattering measurements of this molecular solid at high pressures with different pressure-transmitting ... More
Characterization and decomposition of the natural van der Waals heterostructure SnSb2Te4 under compressionJul 18 2019This joint experimental and theoretical study of the structural, vibrational and electrical properties of rhombohedral SnSb2Te4 at high pressure unveils the internal mechanisms of its compression. The equation of state and the internal polyhedral compressibility, ... More
Identifying the Best Machine Learning Algorithms for Brain Tumor Segmentation, Progression Assessment, and Overall Survival Prediction in the BRATS ChallengeNov 05 2018Mar 19 2019Gliomas are the most common primary brain malignancies, with different degrees of aggressiveness, variable prognosis and various heterogeneous histologic sub-regions, i.e., peritumoral edematous/invaded tissue, necrotic core, active and non-enhancing ... More
Identifying the Best Machine Learning Algorithms for Brain Tumor Segmentation, Progression Assessment, and Overall Survival Prediction in the BRATS ChallengeNov 05 2018Apr 23 2019Gliomas are the most common primary brain malignancies, with different degrees of aggressiveness, variable prognosis and various heterogeneous histologic sub-regions, i.e., peritumoral edematous/invaded tissue, necrotic core, active and non-enhancing ... More