Mean reversion in monetary aggregates in Chile.

In this paper we examine the statistical properties of the monetary aggregates in Chile in order to know if the time series display mean reverting behavior. For this purpose, we use techniques based on fractional integration. Monthly data of various Chilean monetary aggregates from January 1986 until August 2019 are used, and the results indicate very weak evidence of mean reversion. In fact, this property is only found in the case of the currency on circulation and M1 for some of the series examined; however, for M2 and M3 the results clearly show high persistence with orders of integration substantially higher than 1. Thus, shocks are expected to have a permanent nature in these cases. Another remarkable feature observed in the results is that the level of persistence in the series seems to grow with the amount of the monetary aggregate. In a multivariate context, performing a FCVAR model, evidence of cointegration is found among the monetary aggregates, finding a long run equilibrium relationship between them.pre-print395 K

El Progreso con peajes: la sociedad de la información : acceso y convergencia a partir del proyecto europeo /

Consultable des del TDXTítol obtingut de la portada digitalitzadaEl trabajo de tesis estudia la conformación de diferentes niveles de accesos sociales y comunicativos en el marco del proyecto de Sociedad d ella Información, haciendo hincapié en las políticas europeas y contrastándolas con indicadores socioeconómicos y con las directrices que, sobre el mismo proyecto, formulan países latinoamericanos. La tesis doctoral elucida los procesos de concentración y convergencia de industrias de la comunicación y la información, como procesos críticos de un abordaje analítico enmarcado en los estudios de economía política de la comunicación. La construcción de un modo de desarrollo en el que aparecen las tecnologías de información y comunicación como elementos centrales (centralidad que se verifica en la estructuración de las sociedades nombradas como "informacionales") es parte medular de la tesis doctoral, que también presenta el análisis de contenido de los principales documentos de la Comisión Europea y de la Organización para la Cooperación y el Desarrollo Económico (OCDE) en la última década del Siglo XX.The thesis object is to study the different levels of social and communicative access with the Information Society as a framework. Thus, the thesis empathises the european policies of the Information Society project, and the thesis work contrasts this policies with socioeconomic indicators, as well as the main directives of Latin American countries in the same field. The thesis focuses on the concentration and convergence processes localised at the information and communication industries, due to the critical impact of these two processes in the economic structure of contemporaneous societies. The conceptual framework of the thesis is linked to the political economy of communications studies. The thesis also presents the content analysis of the main documents produced by the European Commission and the OECD

The pp-Daugavet property for function spaces

A natural extension of the Daugavet property for $p$-convex Banach function spaces and related classes is analysed. As an application, we extend the arguments given in the setting of the Daugavet property to show that no reflexive space falls into this class

Variability and evolution of the optical polarization of a sample of gamma-ray blazars

We present a polarization variability analysis of a sample of 26 $\gamma$-ray blazars monitored by the Steward Observatory between 2008 and 2018 in the optical band. We investigate the properties and long-term variability of their optical polarization, searching for differences between blazar types. We observe that BL Lac objects are typically less polarized and less variable than flat spectrum radio quasars (FSRQs). Moreover, BL Lacs display a distribution of their polarization angle typically oriented in a preferential direction, contrary to the rather random distribution of FSRQs. For the latter blazar type, as well as those sources showing a bright stellar emission, we take into account the depolarizing effect introduced by the broad line region and the host galaxy on the measured polarization degree. In this sample we also observe that BL Lacs present an uncorrelated evolution of the flux and the polarization. Contrary, FSRQs show a correlation before the depolarization correction, that is lost however after considering this effect. In addition, we study the behaviour of the polarization angle, searching for angle rotations in its long-term evolution. We derive that the FSRQs studied here show rotations more frequently than BL Lac objects by a factor $\sim$1.5. During these periods we also observe a systematic decrease of the polarization fraction, as well as a marginal flux increase, not significant however to connect rotations with optical flares. We interpret these results within the extended shock-in-jet scenario, able to explain the overall features observed here for the polarization of the blazar sample.Comment: Accepted for publication in MNRA

Extracellular vesicles in parasitic diseases

Parasitic diseases affect billions of people and are considered a major public health issue. Close to 400 species are estimated to parasitize humans, of which around 90 are responsible for great clinical burden and mortality rates. Unfortunately, they are largely neglected as they are mainly endemic to poor regions. Of relevance to this review, there is accumulating evidence of the release of extracellular vesicles (EVs) in parasitic diseases, acting both in parasite–parasite inter-communication as well as in parasite–host interactions. EVs participate in the dissemination of the pathogen and play a role in the regulation of the host immune systems. Production of EVs from parasites or parasitized cells has been described for a number of parasitic infections. In this review, we provide the most relevant findings of the involvement of EVs in intercellular communication, modulation of immune responses, involvement in pathology, and their potential as new diagnostic tools and therapeutic agents in some of the major human parasitic pathogens

What does lie at the Milky Way centre? : Insights from the S2-star orbit precession

It has been recently demonstrated that both, a classical Schwarzschild black hole (BH), and a dense concentration of self- gravitating fermionic dark matter (DM) placed at the Galaxy centre, can explain the precise astrometric data (positions and radial velocities) of the S-stars orbiting Sgr A ∗. This result encompasses the 17 best resolved S-stars, and includes the test of general relati vistic ef fects such as the gravitational redshift in the S2-star. In addition, the DM model features another remarkable result: The dense core of fermions is the central region of a continuous density distribution of DM whose diluted halo explains the Galactic rotation curve. In this Letter, we complement the above findings by analysing in both models the relativistic periapsis precession of the S2-star orbit. While the Schwarzschild BH scenario predicts a unique prograde precession for S2, in the DM scenario, it can be either retrograde or prograde, depending on the amount of DM mass enclosed within the S2 orbit, which, in turn, is a function of the DM fermion mass. We show that all the current and publicly available data of S2 cannot discriminate between the two models, but upcoming S2 astrometry close to next apocentre passage could potentially establish if Sgr A ∗is go v erned by a classical BH or by a quantum DM system.Instituto de Astrofísica de La PlataFacultad de Ciencias Astronómicas y Geofísica

Spleen rupture in a case of untreated Plasmodium vivax infection

We report the unique case of a 19-yearold nonimmune patient with Plasmodium vivax monoinfection, confirmed by PCR in the peripheral blood and in the spleen section, who was splenectomized due to spleen rupture two days prior to the diagnosis and treatment of the malarial infection. Microscopic analyses evidenced white pulp expansion and a diffuse hypercellularity in the splenic red pulp, with intense proliferating plasmablasts in the subcapsular and perivascular compartments as well as large numbers of intact P. vivax-infected reticulocytes in the cords, in the absence of other concomitant infectious diseases. To our knowledge, this is the first full detailed immunohistopathological characterization of a nontreated P. vivax-infected spleen

Framework para la generación de templates en sistemas de catálogos de realidad aumentada

En este trabajo presentamos el desarrollo de un sistema de aumentación de metacontenidos sobre las bases del sistema de catálogo virtuales aumentados a fin de mejorar la usabilidad del sistema original para usuarios no expertos. Se propone pues la incorporación del concepto de template de aumentación de la realidad, para los catálogos de realidad aumentada. Los mismos permitirán predefinir la cantidad y tipos de contenidos, junto con sus transformaciones geométricas y el orden en el que aparecen en un determinado template. Así, al aplicarlo a un catálogo aumentado ayudará a mantener un formato uniforme entre todos sus marcadores, así como también simplificará la carga del material a aumentar por parte de usuarios no expertos en el área.Eje: Computación Gráfica, Imágenes y Visualización.Red de Universidades con Carreras en Informática (RedUNCI

Radiotherapy for cervical cancer: Chilean consensus of the Society of Radiation Oncology

BACKGROUND: Cervical cancer is a public health problem in Latin America. Radiotherapy plays a fundamental role both as definitive or adjuvant treatment. There are important intra and inter-country differences regarding access and availability of radiotherapy facilities in this region. The aim of a study was to standardize the basic clinical and technical criteria for the radiation treatment of patients with CC in Chile and provide a guide for Latin American Radiation Oncologists. MATERIALS AND METHODS: Forty-one expert radiation oncologists from the Chilean Radiation Oncology Society made a consensus using the Delphi methodology. RESULTS: There was a high degree of agreement for each of the recommendations. Those with the lowest percentage were related to the definition of the conformal 3D technique as the standard for definitive external radiotherapy (81%) and the criteria for extended nodal irradiation (85%). CONCLUSIONS: These recommendations present an updated guide for radiotherapy treatment of patients with cervical cancer for Latin America. Those should be implemented according to local resources of each institution.

Measurement of the Crab Nebula spectrum over three decades in energy with the MAGIC telescopes

The MAGIC stereoscopic system collected 69 hours of Crab Nebula data between October 2009 and April 2011. Analysis of this data sample using the latest improvements in the MAGIC stereoscopic software provided an unprecedented precision of spectral and night-by-night light curve determination at gamma rays. We derived a differential spectrum with a single instrument from 50 GeV up to almost 30 TeV with 5 bins per energy decade. At low energies, MAGIC results, combined with Fermi-LAT data, show a flat and broad Inverse Compton peak. The overall fit to the data between 1 GeV and 30 TeV is not well described by a log-parabola function. We find that a modified log-parabola function with an exponent of 2.5 instead of 2 provides a good description of the data ($\chi^2=35/26$). Using systematic uncertainties of red the MAGIC and Fermi-LAT measurements we determine the position of the Inverse Compton peak to be at (53 $\pm$ 3stat + 31syst -13syst) GeV, which is the most precise estimation up to date and is dominated by the systematic effects. There is no hint of the integral flux variability on daily scales at energies above 300 GeV when systematic uncertainties are included in the flux measurement. We consider three state- of-the-art theoretical models to describe the overall spectral energy distribution of the Crab Nebula. The constant B-field model cannot satisfactorily reproduce the VHE spectral measurements presented in this work, having particular difficulty reproducing the broadness of the observed IC peak. Most probably this implies that the assumption of the homogeneity of the magnetic field inside the nebula is incorrect. On the other hand, the time-dependent 1D spectral model provides a good fit of the new VHE results when considering a 80 {\mu}G magnetic field. However, it fails to match the data when including the morphology of the nebula at lower wavelengths.Comment: accepted by JHEAp, 9 pages, 6 figure