On the rank of the flat unitary summand of the Hodge bundle

Let $f\colon S\to B$ be a non-isotrivial fibred surface. We prove that the genus $g$, the rank $u_f$ of the unitary summand of the Hodge bundle $f_*\omega_f$ and the Clifford index $c_f$ satisfy the inequality $u_f \leq g - c_f$. Moreover, we prove that if the general fibre is a plane curve of degree $\geq 5$ then the stronger bound $u_f \leq g - c_f-1$ holds. In particular, this provides a strengthening of the bounds of \cite{BGN} and of \cite{FNP}. The strongholds of our arguments are the deformation techniques developed by the first author in \cite{Rigid} and by the third author and Pirola in \cite{PT}, which display here naturally their power and depht.Comment: 19 pages, revised versio

Programa Aduana. Montevideo. Uruguay

La República Oriental del Uruguay presenta una tasa de natalidad que ha descendido de forma sostenida a nivel nacional. Mas del 50% de la población infantil esta bajo la línea de pobreza. El sistema de salud brinda, de momento, una respuesta insuficiente y no coordinada. Si bien el indicador de Mortalidad infantil ha ido descendiendo en el país en los últimos años, las cifras correspondientes al sector público muestran grandes inequidades en zonas y barrios. El propósito de este trabajo es realizar un análisis del Programa Aduana en la República de Uruguay. El objetivo general de dicho programa es, lograr un adecuado crecimiento y desarrollo para toda la población infantil del país, desde su nacimiento hasta los 3 años, incorporando un enfoque de salud integral y de calidad, con énfasis en acciones de educación y promoción de la salud, con perspectiva de derechos, de género y de equidad social, actuando sobre diversos factores que influyen sobre la salud de esta población. Para realizar un adecuado análisis de dicho programa se lleva a cabo una experiencia práctica con continuidad en el primer y en el segundo nivel de atención en Montevideo, Uruguay. Por lo cual, se realiza una rotación de 4 meses en la planta de maternidad del hospital público de Montevideo, Hospital Manuel Quintela, para luego pasar los dos últimos meses de rotación en el Centro de Salud La Cruz de Carrasco como enfermera pediátrica. Toda la experiencia de seis meses se realiza como figura de enfermera del Programa Aduana.Departamento de EnfermeríaGrado en Enfermerí

Topological Data Analysis of High-dimensional Correlation Structures with Applications in Epigenetics

This thesis comprises a comprehensive study of the correlation of highdimensional datasets from a topological perspective. Derived from a lack of efficient algorithms of big data analysis and motivated by the importance of finding a structure of correlations in genomics, we have developed two analytical tools inspired by the topological data analysis approach that describe and predict the behavior of the correlated design. Those models allowed us to study epigenetic interactions from a local and global perspective, taking into account the different levels of complexity. We applied graph-theoretic and algebraic topology principles to quantify structural patterns on local correlation networks and, based on them, we proposed a network model that was able to predict the locally high correlations of DNA methylation data. This model provided with an efficient tool to measure the evolution of the correlation with the aging process. Furthermore, we developed a powerful computational algorithm to analyze the correlation structure globally that was able to detect differentiated methylation patterns over sample groups. This methodology aimed to serve as a diagnostic tool, as it provides with selected epigenetic biomarkers associated with a specific phenotype of interest. Overall, this work establishes a novel perspective of analysis and modulation of hidden correlation structures, specifically those of great dimension and complexity, contributing to the understanding of the epigenetic processes, and that is designed to be useful for non-biological fields too

Intelligent Android malware family classification using Genetic Algorithms and SVM

As of April 2019, Android was the most popular mobile operating system amongst smartphone users[1]. Its high popularity, combined with the extended use of smartphones for everyday tasks as well as storing or accessing sensitive and personal data, has made Android applications the target of numerous malware attacks over the last few years and in the present. The malware attacks have been perfected to target specific vulnerabilities in the operating system or the user; thus specializing in types of malware and families within each type. The malware is usually distributed in infected applications (or APKs), which contain malicious behaviours that can be found looking into their code (known as static analysis) or analysing the behaviour of the application while running (known as dynamic analysis). This document describes the implementation of an intelligent system that aims to classify a series of malicious APK samples obtained from the free repository ContagioDump. These samples are classified inside the type and family they belong to. To create the classifier system, a Support Vector Machine (SVM) is implemented using Python’s library Scikit Learn. A series of attributes are extracted from the samples of malicious APK by analysing the code of the APKs via static analysis, using Python’s library Androguard, which contains a parser that allows to interact with all the relevant parts of the APK file. The attributes obtained are very high in number, and for that reason a Genetic Algorithm is used to optimize the attributes that the SVM uses in the learning process. The algorithm codifies a subset of attributes from all the attributes extracted in the static analysis, and is evaluated using the accuracy score obtained when training the SVM with said subset. As a result, a subset of attributes and a trained model for the classification are obtained. This model is then tested with a new set of malware samples, belonging to all the families classified in the learning. The present document contains the explanation of the process of designing, creating and testing the system. It is developed as bachelor’s thesis for computer science and engineering degree in Universidad Carlos III de Madrid.Ingeniería en Tecnologías de Telecomunicación (Plan 2010

Families of curves with Higgs field of arbitrarily large kernel

In this article, we consider the flat bundle (Formula presented.) and the kernel (Formula presented.) of the Higgs field naturally associated to any (polarized) variation of Hodge structures of weight 1. We study how strict the inclusion (Formula presented.) can be in the geometric case. More precisely, for any smooth projective curve (Formula presented.) of genus (Formula presented.) and any (Formula presented.), we construct non-isotrivial deformations of (Formula presented.) over a quasi-projective base such that (Formula presented.) and (Formula presented.)

Initial growth of Chrysolaena flexuosa (Sims) H. Rob., native Asteraceae with ornamental potential value

Se realizó un estudio para conocer características relacionadas con el crecimiento inicial de la especie Chysolaena flexuosa (Sims) H. Rob., Asteraceae nativa de las sierras bonaerenses con potencial ornamental gracias al colorido de sus capítulos durante la floración y a su inflorescencia. Se empleó para el ensayo simiente de C. flexuosa recolectada en la Sierra La Barrosa (Partido de Balcarce) y se analizó la evolución de las plantas en invernáculo durante un ciclo de crecimiento. Los estadios reproductivos de C. flexuosa comprendieron las estaciones de primavera, verano e inicios de otoño. En todas las plantas se observaron, a mediados de la etapa reproductiva, capítulos con flores violáceas conjuntamente con capítulos fructificados. A principios de otoño todas las plantas poseían capítulos fructificados que exhibían sus papus de color blanco, situación que entrega a la planta otro interesante atributo. Por su rusticidad, establecida sobre la base de la germinación y supervivencia de sus plántulas, y por el atractivo de la especie desde primavera a inicios del otoño, C. flexuosa se destaca como promisoria para la obtención de cultivares ornamentales para uso como ejemplar aislado, en macetas, borduras o como flor de corte para la realización de arreglos florales secos.A study was carried out to know some characteristics related to the initial growth of Chysolaena flexuosa, a native Asteraceae of the Buenos Aires's "sierras". As it has colorful and beautiful flowers, it has a great ornamental potential value. Seeds from C. flexuosa where collected from "Sierra La Barrosa" (Balcarce) and used in this experiment, where the evolution of specimens was analyzed in a greenhouse during a season. C. flexuosa reproductive stage started at spring and finished at the beginning of autumn. In all the cases, during the middle stage, the inflorescences of the plants showed heads with violet flowers and heads with fruits (achene) at the same time. At the beginning of autumn all the plants had only heads with achenes showing its white pappus, situation that gives the plants another interesting attribute because their inflorescences remain attractive even during the fructification stage so they can be used for make dried floral arrangements. Because of the rusticity and beauty of this specie from spring to autumn, C. flexuosa is presented as a promising specie for obtain ornamental cultivars to use as a specimen, in containers, in masses or as cut material for bouquets.Fil: Echeverría, María Lis. Universidad Nacional de Mar del Plata. Facultad de Ciencias AgrariasFil: Alonso, Sara Isabel. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agraria