496 research outputs found
The multidimensionality of poverty: Time poverty in Spain
In the last few years the concept of poverty has evolved from simply being a measure of income poverty to a multidimensional measure that takes into consideration essential aspects for the attainment of certain levels of wellbeing. This paper assesses how the incorporation of time can contribute to the measurement of poverty. To this end, we reviewed the time poverty literature and focused on the Spanish case. We use the Spanish Time-Use Survey 2009-2010 to analyse time poverty in Spain, and estimate a probit model to assess the probability of being time poor in Spain and identify key factors associated with time poverty in Spain
A Model-Driven Approach for Business Process Management
The Business Process Management is a common mechanism recommended by a high number of standards for the management of companies and organizations. In software companies this practice is every day more accepted and companies have to assume it, if they want to be competitive. However, the effective definition of these processes and mainly their maintenance and execution are not always easy tasks. This paper presents an approach based on the Model-Driven paradigm for Business Process Management in software companies. This solution offers a suitable mechanism that was implemented successfully in different companies with a tool case named NDTQ-Framework.Ministerio de Educación y Ciencia TIN2010-20057-C03-02Junta de Andalucía TIC-578
Factores que condicionan el acabado de terneros de raza Tudanca en Cantabria
UnpublishedTomo I. Sección: Sistemas Ganaderos - Economía y Gestión. Sesión: Vacuno carne
Higher circulating Vitamin B12 is associated with lower levels of inflammatory markers in individuals at high cardiovascular risk and in naturally aged mice
Vitamin B12 is an essential nutrient that is involved in numerous physiological processes, and its deficiency can lead to various complications, including neurological and haematological disorders. Some studies have suggested that vitamin B12 may have anti-inflammatory effects, but the mechanisms underlying this relationship are not yet fully understood. We investigated the relationship between circulating vitamin B12 and inflammatory markers interleukin-6 (IL-6) and C-reactive protein (CRP). The association of peripheral levels of vitamin B12 with IL-6 and CRP was assessed in 136 human samples from a high cardiovascular risk population. To corroborate the results from the human trial, the analysis was replicated in naturally aged mice.Individuals with higher serum levels of vitamin B12 showed lower concentrations of IL-6 and CRP after adjustment for potential confounders, and an inverse association was also found between serum IL-6 and vitamin B12 levels in naturally aged mice.That circulating vitamin B12 was inversely associated with IL-6 and CRP in humans and with IL-6 in mice suggests that it may exert an anti-inflammatory effect through modulation of these pro-inflammatory molecules. This article is protected by copyright. All rights reserved.This article is protected by copyright. All rights reserved
Disk galaxies with broken luminosity profiles from cosmological simulations
We present SPH cosmological simulations of the formation of three disk
galaxies with a detailed treatment of chemical evolution and cooling. The
resulting galaxies have properties compatible with observations: relatively
high disk-to-total ratios, thin stellar disks and good agreement with the
Tully-Fisher and the luminosity-size relations. They present a break in the
luminosity profile at 3.0 +- 0.5 disk scale lengths, while showing an
exponential mass profile without any apparent breaks, in line with recent
observational results. Since the stellar mass profile is exponential, only
differences in the stellar populations can be the cause of the luminosity
break. Although we find a cutoff for the star formation rate imposed by a
density threshold in our star formation model, it does not coincide with the
luminosity break and is located at 4.3 +- 0.4 disk scale lengths, with star
formation going on between both radii. The color profiles and the age profiles
are "U-shaped", with the minimum for both profiles located approximately at the
break radius. The SFR to stellar mass ratio increases until the break,
explaining the coincidence of the break with the minimum of the age profile.
Beyond the break we find a steep decline in the gas density and, consequently,
a decline in the SFR and redder colors. We show that most stars (64-78%) in the
outer disk originate in the inner disk and afterwards migrate there. Such
stellar migrations are likely the main origin of the U-shaped age profile and,
therefore, of the luminosity break.Comment: 8 pages, 4 figures. Accepted by ApJ
Automatic Test Case Generation from Functional Requirements in NDT
Navigational Development Techniques (NDT) is a Model-driven
framework focused on defining Web requirements and obtaining related
artefacts from them by means of transformations. Testing is one of the key
elements in a software development process, however NDT neither include
models to define artefacts nor transformations to obtain them from
requirements. This paper presents how NDT improves with new models and
transformations in order to generate test cases.Ministerio de Ciencia e Innovación TIN2010-20057-C03-02Ministerio de Ciencia e Innovación TIN2010-12312-EJunta de Andalucía TIC-578
Bioactive pectic polysaccharides from bay tree pruning waste: Sequential subcritical water extraction and application in active food packaging
The potential isolation of bio-active polysaccharides from bay tree pruning waste was studied using sequential subcritical water extraction using different time-temperature combinations. The extracted polysaccharides were highly enriched in pectins while preserving their high molecular mass (10–100 kDa), presenting ideal properties for its application as additive in food packaging. Pectin-enriched chitosan films were prepared, improving the optical properties (=95% UV-light barrier capacity), antioxidant capacity (?95% radical scavenging activity) and water vapor permeability (=14 g·Pa-1·s-1·m-1·10-7) in comparison with neat chitosan-based films. Furthermore, the antimicrobial activity of chitosan was maintained in the hybrid films. Addition of 10% of pectins improved mechanical properties, increasing the Young's modulus 12%, and the stress resistance in 51%. The application of pectin-rich fractions from bay tree pruning waste as an additive in active food packaging applications, with triple action as antioxidant, barrier, and antimicrobial has been demonstrated.Authors would like to thank the Spanish Ministry of Science and
Innovation (Ramon y Cajal contract RYC-2015-17109) and Universidad
de Cordoba, ´ Spain (Predoctoral Grant 2019) for the financial support
during this work
El entorno virtual: un espacio para el aprendizaje colaborativo
El aprendizaje colaborativo es una metodología que trata de fomentar la competencia de “trabajar en grupo”.
En este trabajo se aborda el estudio del aprendizaje en grupo dentro del contexto de las asignaturas virtuales. El objetivo perseguido es el análisis de este tipo de aprendizaje así como sus posibilidades en el e-learning.
El aprendizaje colaborativo en un entorno virtual permite la interacción entre el alumnado y la interconexión y el desarrollo de habilidades relacionadas con la docencia on-line.
Virtual tools: a space for collaborative learning
Abstract
Collaborative learning is a methodology that tries to promote the skill in which two or more people learn or attempt to learn something together.
This paper deals with the study of collaborative learning in the context of virtual subjects. The main objective is the analysis of this type of learning and its possibilities in the e-learning.
Collaborative learning in a virtual environment enables interaction between students and interconnection and development skills related to online work
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