Clasificador de logs de acceso para detección de incidentes de ciberseguridad

The number of attacks on government websites has escalated in the last years. In order to assist in the detection process conducted by cybersecurity analysts, this document suggests implementing machine learning techniques over web server access logs. The overall objective is to optimize the detection time using a customized classifier which selects traces corresponding to anomalous activity. Specifically, web server combined log format (CLF) access logs coded as real vectors are an input to a weighted K-NN nearest neighbors’ model. The methodology was tested on datasets and premises provided by the CERTuy (National Cybersecurity Event Response Team) and the SOC (Security Operations Center). According to evaluations 82% of cybersecurity offenses have been detected, 80% of normal behavior has been filtered and the reduction time has been reduced from 13 hours to 15 minutes.Recientemente los sitios web de los gobiernos en el mundo han sido objeto de ataques informáticos. Por ello urge una solución que asista a los analistas de ciberseguridad a detectar los incidentes con rapidez. Para optimizar el tiempo de detección en el proyecto se desarrolló un clasificador que filtre líneas de logs de servidores web en formato CLF (Combined Log Format) que indican comportamiento anómalo. Para ello, se codifican los logs de acceso en representación vectorial y luego se usa el algoritmo de aprendizaje automático K-NN ponderado (K vecinos más próximos) para filtrar los logs. Los datos de entrada fueron provistos por el CERTuy (Equipo de Respuesta ante Emergencias Informáticas) y el SOC (Centro de Operaciones de Seguridad). De las pruebas realizadas sobre el servicio de clasificación, se detectó el 82% de ofensas de ciberseguridad de un conjunto de datos asociado, se logró filtrar el 80% de logs que indican comportamiento normal y se disminuyó el tiempo de detección de logs que indican comportamiento anómalo de 13 horas a 15 minutos

Métodos y técnicas de monitoreo y predicción temprana en los escenarios de riesgos socionaturales

Esta obra concentra los métodos y las técnicas fundamentales para el seguimiento y monitoreo de las dinámicas de los escenarios de riesgos socionaturales (geológicos e hidrometeorológicos) y tiene como objetivo general orientar, apoyar y acompañar a los directivos y operativos de protección civil en aterrizar las acciones y políticas públicas enfocadas a la gestión del riesgo local de desastre

Symptomatic Aortic Paravalvular Leak: Percutaneous Treatment with Amplatzer Vascular Plug III Device as an Alternative to Surgery

Abstract A significant prosthetic paravalvular leak is an uncommon and severe postsurgical complication correlated to the occurrence of congestive heart failure and hemolytic anemia. Percutaneous treatment has become an attractive and effective proposal to relieve symptoms and reduce complications in patients whose high rate of morbidity/mortality precludes a new surgery. This is the case of an 81-year-old patient with a history of biological aortic valve replacement seeking medical help due to heart failure and hemolytic anemia, with a prosthetic paravalvular regurgitation jet and high surgical mortality according to EuroSCORE II

Glazbene pošalice : koncert Gudačkog komornog orkestra Muzičke akademije (Gudački komorni orkestar Muzičke akademije Sveučilišta u Zagrebu, solist Marko Glogović (violina) i Mariachi Los Caballeros, 27. 2. 2021.)

Koncert je održan na Muzičkoj akademiji u Koncertnoj dvorani "Blagoje Bersa" 27. 2. 2021. Izvođači: Gudački komorni orkestar Muzičke akademije Sveučilišta u Zagrebu, Marko Glogović (violina), Mariachi Los Caballeros. Voditelj orkestra: red. prof. art. Jože Haluza. Program: 1. W. A. Mozart: Muzička šala, KV 522 (Allegro – Menuetto Maestoso – Adagio cantabile – Presto); 2. F. Lhotka: Scherzo; 3. T. Uhlik: Gospon Fašnik, kolaž za violinu i gudače (solist: Marko Glogović); 4. P. Hindemith: Die beiden lustigen Mistifinken iz Minimax-Repertorium für Militärmusik; 5. D. Šostakovič: Polka iz baleta Zlatno doba, op 22; 6. R. G. Perez-C. A. Martinoli (orkestracija: L. Magdalenić): Cuando calienta el sol (gosti izvođači: Mariachi Los Caballeros); 7. N. Castillo (orkestracija: L. Magdalenić): Las tres huastecas (gosti izvođači: Mariachi Los Caballeros)

Glazbene pošalice : koncert Gudačkog komornog orkestra Muzičke akademije (Gudački komorni orkestar Muzičke akademije u Zagrebu, solist Marko Glogović (violina), Mariachi Los Caballeros, 27.2.2021.)

Koncert je održan na MA u Koncertnoj dvorani "Blagoje Bersa" 27.2.2021. Izvođači: Gudački komorni orkestar Muzičke akademije u Zagrebu; solist: Marko Glogović (violina); voditelj orkestra: Jože Haluza; gosti izvođači: Mariachi Los Caballeros. Program: 1. W. A. Mozart: Muzička šala, KV 522 (Allegro, Menuetto Maestoso, Adagio cantabile, Presto); 2. F. Lhotka: Scherzo; 3. T. Uhlik: Gospon Fašnik, kolaž za violinu i gudače (solist: Marko Glogović); 4. P. Hindemith: Die beiden lustigen Mistifinken iz Minimax – Repertorium für Militärmusik; 5. D. Šostakovič: Polka iz baleta Zlatno doba, op 22; 6. R. G. Perez - C. A. Martinoli (orkestracija: L. Magdalenić): Cuando calienta el sol (gosti izvođači: Mariachi Los Caballeros); 7. N. Castillo (orkestracija: L. Magdalenić): Las tres huastecas (gosti izvođači: Mariachi Los Caballeros)

Diccionario de acontecimientos de derechas en el siglo XXI en América Latina

Este libro se origina fruto del diálogo y la construcción mancomunada del conocimiento en el Centro de Estudios Comparados de la Facultad de Ciencia Política y Relaciones Internacionales de la Universidad Nacional de Rosario y en el marco de la integración de preocupaciones e intereses de distintos proyectos de investigación radicados en esta universidad y en el CONICET. Esto explica la heterogeneidad que presentan los/as distintos autores/as de las entradas, desde académicos de trayectoria, investigadores en proceso de formación, hasta estudiantes avanzados. Diccionario de acontecimientos de derechas en el siglo XXI en América Latina es una obra de referencia para la reflexión profunda, articulada y sesuda de los itinerarios, derroteros y fisonomía que adquieren las derechas políticas en la región, en un siglo de vértigo, cambio y vorágine. Por ello, es una obra recomendada para quienes busquen auscultar la complejidad de la política regional en el siglo XXI; reconocer las facetas y lindes que adquieren las derechas en cada uno de los países cuando se tornan visibles en el espacio público político; y, finalmente, advertir las continuidades y rupturas de la historia política contemporánea de América Latina a la luz de sus pliegues y acontecimientos más destacados.Fil: Iglesias, Esteban. Universidad Nacional de Rosario. Facultad de Ciencia Política y Relaciones Internacionales; Argentina

Ordenación territorial: una revisión desde los objetivos de desarrollo sostenible

Esta obra está integrad por diecisiete capítulos de libro que se organizan en tres partes: los servicios ecosistémicos; vulnerabilidad; y sostenibilidad, en el marco de los Objetivos de Desarrollo Sostenible

NEOTROPICAL XENARTHRANS: a data set of occurrence of xenarthran species in the Neotropics

Xenarthrans—anteaters, sloths, and armadillos—have essential functions for ecosystem maintenance, such as insect control and nutrient cycling, playing key roles as ecosystem engineers. Because of habitat loss and fragmentation, hunting pressure, and conflicts with domestic dogs, these species have been threatened locally, regionally, or even across their full distribution ranges. The Neotropics harbor 21 species of armadillos, 10 anteaters, and 6 sloths. Our data set includes the families Chlamyphoridae (13), Dasypodidae (7), Myrmecophagidae (3), Bradypodidae (4), and Megalonychidae (2). We have no occurrence data on Dasypus pilosus (Dasypodidae). Regarding Cyclopedidae, until recently, only one species was recognized, but new genetic studies have revealed that the group is represented by seven species. In this data paper, we compiled a total of 42,528 records of 31 species, represented by occurrence and quantitative data, totaling 24,847 unique georeferenced records. The geographic range is from the southern United States, Mexico, and Caribbean countries at the northern portion of the Neotropics, to the austral distribution in Argentina, Paraguay, Chile, and Uruguay. Regarding anteaters, Myrmecophaga tridactyla has the most records (n = 5,941), and Cyclopes sp. have the fewest (n = 240). The armadillo species with the most data is Dasypus novemcinctus (n = 11,588), and the fewest data are recorded for Calyptophractus retusus (n = 33). With regard to sloth species, Bradypus variegatus has the most records (n = 962), and Bradypus pygmaeus has the fewest (n = 12). Our main objective with Neotropical Xenarthrans is to make occurrence and quantitative data available to facilitate more ecological research, particularly if we integrate the xenarthran data with other data sets of Neotropical Series that will become available very soon (i.e., Neotropical Carnivores, Neotropical Invasive Mammals, and Neotropical Hunters and Dogs). Therefore, studies on trophic cascades, hunting pressure, habitat loss, fragmentation effects, species invasion, and climate change effects will be possible with the Neotropical Xenarthrans data set. Please cite this data paper when using its data in publications. We also request that researchers and teachers inform us of how they are using these data

NEOTROPICAL CARNIVORES: a data set on carnivore distribution in the Neotropics

Mammalian carnivores are considered a key group in maintaining ecological health and can indicate potential ecological integrity in landscapes where they occur. Carnivores also hold high conservation value and their habitat requirements can guide management and conservation plans. The order Carnivora has 84 species from 8 families in the Neotropical region: Canidae; Felidae; Mephitidae; Mustelidae; Otariidae; Phocidae; Procyonidae; and Ursidae. Herein, we include published and unpublished data on native terrestrial Neotropical carnivores (Canidae; Felidae; Mephitidae; Mustelidae; Procyonidae; and Ursidae). NEOTROPICAL CARNIVORES is a publicly available data set that includes 99,605 data entries from 35,511 unique georeferenced coordinates. Detection/non-detection and quantitative data were obtained from 1818 to 2018 by researchers, governmental agencies, non-governmental organizations, and private consultants. Data were collected using several methods including camera trapping, museum collections, roadkill, line transect, and opportunistic records. Literature (peer-reviewed and grey literature) from Portuguese, Spanish and English were incorporated in this compilation. Most of the data set consists of detection data entries (n = 79,343; 79.7%) but also includes non-detection data (n = 20,262; 20.3%). Of those, 43.3% also include count data (n = 43,151). The information available in NEOTROPICAL CARNIVORES will contribute to macroecological, ecological, and conservation questions in multiple spatio-temporal perspectives. As carnivores play key roles in trophic interactions, a better understanding of their distribution and habitat requirements are essential to establish conservation management plans and safeguard the future ecological health of Neotropical ecosystems. Our data paper, combined with other large-scale data sets, has great potential to clarify species distribution and related ecological processes within the Neotropics. There are no copyright restrictions and no restriction for using data from this data paper, as long as the data paper is cited as the source of the information used. We also request that users inform us of how they intend to use the data

Design and implementation of the AMIGA embedded system for data acquisition

International audienceThe Auger Muon Infill Ground Array (AMIGA) is part of the AugerPrime upgrade of the Pierre Auger Observatory. It consists of particle counters buried 2.3 m underground next to the water-Cherenkov stations that form the 23.5 km2 large infilled array. The reduced distance between detectors in this denser area allows the lowering of the energy threshold for primary cosmic ray reconstruction down to about 1017 eV. At the depth of 2.3 m the electromagnetic component of cosmic ray showers is almost entirely absorbed so that the buried scintillators provide an independent and direct measurement of the air showers muon content. This work describes the design and implementation of the AMIGA embedded system, which provides centralized control, data acquisition and environment monitoring to its detectors. The presented system was firstly tested in the engineering array phase ended in 2017, and lately selected as the final design to be installed in all new detectors of the production phase. The system was proven to be robust and reliable and has worked in a stable manner since its first deployment