Pixel Features for Self-organizing Map Based Detection of Foreground Objects in Dynamic Environments

Among current foreground detection algorithms for video sequences, methods based on self-organizing maps are obtaining a greater relevance. In this work we propose a probabilistic self-organising map based model, which uses a uniform distribution to represent the foreground. A suitable set of characteristic pixel features is chosen to train the probabilistic model. Our approach has been compared to some competing methods on a test set of benchmark videos, with favorable results.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech

Excellence and Quality in Andalusia University Library System

From 1996 onwards, then, the Quality Assessment National Plan and the adoption of its agenda by regional authorities and Universities alike has resulted in a growing acceptance by the Spanish academic community of the challenges and opportunities offered by evaluation and quality assurance activities. Academic librarians have been committed to this culture of quality from the very beginnings and in most cases have being leading the way in their own institutions. General tools like the Evaluation Guide referred to above developed to be applied in administration and services alike were of little use for libraries, so academic libraries have been the first units to develop their own evaluation guides at local and regional levels. University System in Andalusia (Spain) is formed by 10 Universities financed by regional government. The Quality Unit of Andalusia Universities convened in 2000 an Assessment University Libraries Pilot Plan to do a global analysis of the Library System. This Pilot Plan has had three steps: - During 2000-2002, a technical committee to draft a new evaluation guide for academic libraries. Based on the EFQM, because of its growing influence in the evaluation of the public sector and not-for-profit organizations across Europe. During the course of our work we were delighted to see that we concurred basically with the approach taken by LISIM. The Guide is divided into 5 parts, as follows: Analysis and Description of 9 criteria adapted to library scenario, 35 Tables for data collection, a set of 30 quality and performance Indicators, a Excellence-rating matrix, an objective tool, to determine the level of excellence achieved by the library on a scale from 0 to 10, and General guidelines for the Assessment Committees of University Departments (the basic unit of research assessment undertaken by the University) and of degree courses (the basic unit of assessment of teaching personnel). - In 2002-2004, a coordination committee drove the assessment process of 9 libraries and tested materials and evaluation methodology. The Pilot Plan has finalised with External Evaluation for 5 External Committee formed by librarians, faculties and EFQM methodology specialist. The aim of this paper is explain different parts and strong points of this process and how EFQM is suitable for all kind of librarie

Entropies and IPR as Markers for a Phase Transition in a Two-Level Model for Atom–Diatomic Molecule Coexistence

This work is part of the I+D+i projects PID2019-104002GB-C22 and PID2020-114687GB-I00 funded by MCIN/AEI/10.13039/501100011033. This work is also part of grant Group FQM-160, EU FEDER funds US-1380840 and the project PAIDI 2020 with reference P20_01247, funded by the Consejería de Economía, Conocimiento, Empresas y Universidad, Junta de Andalucía (Spain) and “ERDF—A Way of Making Europe”.A quantum phase transition (QPT) in a simple model that describes the coexistence of atoms and diatomic molecules is studied. The model, which is briefly discussed, presents a second-order ground state phase transition in the thermodynamic (or large particle number) limit, changing from a molecular condensate in one phase to an equilibrium of diatomic molecules–atoms in coexistence in the other one. The usual markers for this phase transition are the ground state energy and the expected value of the number of atoms (alternatively, the number of molecules) in the ground state. In this work, other markers for the QPT, such as the inverse participation ratio (IPR), and particularly, the Rényi entropy, are analyzed and proposed as QPT markers. Both magnitudes present abrupt changes at the critical point of the QPT.Consejería de Economía, Conocimiento, Empresas y Universidad, Junta de AndalucíaSecretaría de Estado de Investigacion, Desarrollo e Innovacion FQM-160, MCIN/AEI/10.13039/501100011033, PID2019-104002GB-C22, PID2020-114687GB-I00European Regional Development Fund US-138084

Entropies and IPR as Markers for a Phase Transition in a Two-Level Model for Atom–Diatomic Molecule Coexistence

A quantum phase transition (QPT) in a simple model that describes the coexistence of atoms and diatomic molecules is studied. The model, which is briefly discussed, presents a second-order ground state phase transition in the thermodynamic (or large particle number) limit, changing from a molecular condensate in one phase to an equilibrium of diatomic molecules–atoms in coexistence in the other one. The usual markers for this phase transition are the ground state energy and the expected value of the number of atoms (alternatively, the number of molecules) in the ground state. In this work, other markers for the QPT, such as the inverse participation ratio (IPR), and particularly, the Rényi entropy, are analyzed and proposed as QPT markers. Both magnitudes present abrupt changes at the critical point of the QPT.Ministerio de Ciencia e Innovación PID2019-104002GB-C22, PID2020-114687GB-I00, 10.13039/501100011033Junta de Andalucía US-1380840, P20_0124

A multimodal conversational agent for personalized language learning

Proceedings of: 5th International Symposium on Ambient Intelligence (ISAmI 2014), Salamanca (Spain), June 4th-6th, 2014.Conversational agents have became a strong alternative to enhance educational systems with intelligent communicative capabilities. In this paper, we describe a multimodal conversational agent that facilitates an independent and user-adapted second language learning. The different modules of the system cooperate to interact with students using spoken natural language and visual modalities, and adapt their functionalities taking into account their evolution and specific preferences. The results of a preliminary evaluation show that users' satisfaction with the system was high, as well as the perceived didactic potential and adaptive functionalities.This work was supported in part by Projects MINECO TEC2012-37832-C02-01, CICYT TEC2011-28626-C02-02, CAM CONTEXTS (S2009/TIC-1485)

Vadose zone air as a biogenic source of methane in Nerja Cave system (South of Spain)

Subterranean air in karst cavities has often low methane contents in comparison to atmosphere and so karst systems have been considered a sink of atmospheric methane. Methane-oxidizing bacteria have been hypothesized as responsible for CH4 depletion in many caves around the world, although ionization radiation was also proposed as possible mechanism for this process. We measured CO2 and CH4 concentration and their C isotopic composition (d13C-CO2 and d13C-CH4) over 2 years within the Nerja cave system (South Spain) and in 9 boreholes drilled into the vadose zone (Triassic carbonate aquifer) surrounding the cave. According to d13C-CO2 and d13C-CH4 vadose zone of this karst system is a source of biogenic methane, produced both by acetate fermentation and CO2 reduction. Biogenic and atmospheric methane flows (along fractures from the vadose zone, and through ventilation, respectively) into the cave, where it is oxidized by methanotrophic bacteria that we detected on soil samples into the cave.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech

Impact of COVID-19 outbreak by income: hitting hardest the most deprived

Background: The impact of the 2019 coronavirus disease (COVID-19) has many facets. This ecological study analysed age-standardized incidence rates by economic level in Barcelona. Methods: We evaluated confirmed cases of COVID-19 in Barcelona (Spain) between 26 February 2020 and 19 April 2020. Districts were classified according to most recent (2017) mean income data. The reference for estimating age-standardized cumulative incidence rates was the 2018 European population. The association between incidence rate and mean income by district was estimated with the Spearman rho. Results: The lower the mean income, the higher the COVID-19 incidence (Spearman rho = 0.83; P value = 0.003). Districts with the lowest mean income had the highest incidence of COVID-19 per 10 000 inhabitants; in contrast, those with the highest income had the lowest incidence. Specifically, the district with the lowest income had 2.5 times greater incidence of the disease, compared with the highest-income district [70 (95% confidence interval 66-73) versus 28 (25-31), respectively]. Conclusions: The incidence of COVID-19 showed an inverse socioeconomic gradient by mean income in the 10 districts of the city of Barcelona. Beyond healthcare for people with the disease, attention must focus on a health strategy for the whole population, particularly in the most deprived areas

Visual authoring of virtual reality conversational scenarios for e‑learning

The COVID-19 pandemic has led to face-to-face activities being developed in a virtual format that often offers a poor experience in areas such as education. Virtual Learning Environments have improved in recent years thanks to new technologies such as Virtual Reality or Chatbots. However, creating Virtual Learning Environments requires advanced programming knowledge, so this work is aimed to enable teachers to create these new environments easily. This work presents a set of extensions for App Inventor that facilitate the authoring of mobile learning apps that use Chatbots in a Virtual Reality environment, while simultaneously monitoring of student activity. This proposal is based on integrating block-based languages and Business Process Model and Notation diagrams. The developed extensions were successfully implemented in an educational app called Let’s date!. A quantitative analysis of the use of these extensions in App Inventor was also carried out, resulting in a significant reduction in the number of blocks required. The proposed contribution has demonstrated its validity in creating virtual learning environments through visual programming and modelling, reducing development complexity

Hacia una educación inclusiva y personalizada mediante el uso de los sistemas de diálogo multimodal

Los continuos avances en el desarrollo de tecnologías de la información han dado lugar actualmente a la posibilidad de acceder a los contenidos educativos desde cualquier lugar, en cualquier momento y de forma casi instantánea. Sin embargo, la accesibilidad no es siempre considerada como criterio principal en el diseño de aplicaciones educativas, especialmente para facilitar su utilización por parte de personas con discapacidad. Diferentes tecnologías han surgido recientemente para fomentar la accesibilidad a las nuevas tecnologías y dispositivos móviles, favoreciendo una comunicación más natural con los sistemas educativos. En este artículo se describe el uso innovador de los sistemas de diálogo multimodales en el campo de la educación, con un especial énfasis en la descripción de las ventajas que ofrecen para la creación de aplicaciones educativas inclusivas y adaptadas a la evolución de los estudiantes.Continuous advances in the development of information technologies have currently led to the possibility of accessing learning contents from anywhere, at anytime and almost instantaneously. However, accessibility is not always the main objective in the design of educative applications, specifically to facilitate their adoption by disabled people. Different technologies have recently emerged to foster the accessibility of computers and new mobile devices favouring a more natural communication between the student and the developed educative systems. This paper describes innovative uses of multimodal dialog systems in education, with special emphasis in the advantages that they provide for creating inclusive applications and adapted to the students specific evolution.Trabajo parcialmente financiado por los proyectos MINECO TEC2012-37832-C02-01, CICYT TEC2011-28626-C02-02, CAM CONTEXTS (S2009/TIC-1485) y TRA2010-20225-C03-01.Publicad

Estimation of empirical rainfall thresholds for landslide triggering using partial duration series and their relation with climatic cycles. An application in southern Ecuador

Rainfall-induced landslides constitute a major cause of damage and fatalities throughout the intramontane basins of the Andes. The geological and climatic setting plays a key role in the generation of a high number of landslides in this area. For this reason, a greater understanding of the relationship between landslide frequency and climate conditions is necessary to mitigate human and economic losses.Accordingly, this paper presents an analysis of rainfall variables associatedwith a series of dated landslides (153 in total) in the southern Ecuador basin of Loja. This analysis was performed by applying an affordable empirical method that enables the calculation of critical rainfall threshold (CRT) curves. This calculation is based on an in-depth examination of rainfall parameters, such as cumulative precipitation and mean intensity, linked to a wide range of rainfall duration (from 1 to 90 days). The inspection of these parameters was addressed considering their frequency, which was calculated by using partial duration series (PDS), taking into account the entire rainfall record. This work has revealed that only 24% of landslides were triggered by rainfall conditions with maximum return periods greater than 1 year, whereas the rest did not exceed that return period. After finding the best correlation between the maximum return periods and the maximum mean intensity, a minimum power law function was adjusted to the CRTcurve that correlates duration and cumulative rainfall. The values for this CRT function resulted in 5.14 and 0.83 for its scaling constant (α) and shape parameter (β), respectively. In addition, a spectral analysis was conducted to detect climatic cycles on the entire rainfall record. In general, a clear correlation could not be established between climatic frequencies and significant rainfall events inducing landslides, although similarly return periods were found for a critical rainfall event of March 2015 (10.4 years) and the SUNSPOT cycles (10.5-12 years). The results derived from this research are significantly valuable for the prevention of future mass-movements, although additional data will be crucial to update and calibrate CRT curves to study the influence of climate on landslide event frequency and magnitude in Loja.Ministerio de Educación Superior, Ciencia, Tecnología e Innovación (SENESCYT)Instituto Nacional de Meteorología e Hidrología (INAMHI)Secretaría de Gestión de Riesgos (SNGR-Zona 7) del gobierno de EcuadorMinisterio de Economía y Competitividad de España a través del Programa "Juan de la Cierva