1,921 research outputs found

    Covid19, intervención pública y preferencias redistributivas: un análisis descriptivo del caso español.

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    La pandèmia de COVID19 ha comportat grans canvis en la societat. La forta intervenció dels poders públics en la crisi sanitària i l'impacte social que aquesta ha provocat amb l'augment de la pobresa i la desigualtat són factors que poden originar un conflicte social al voltant de la redistribució d'ingressos i de riquesa. El present article pretén discernir des d'un estudi del comportament de la opinió pública basant-se en els Estudis d'Opinió Pública i Política Fiscal del CIS si s'ha produït un canvi en el suport a l'enfortiment de l'Estat de benestar, en qüestions fiscals i en la prestació de serveis públics i la capacitat de redistribució de les institucions públiques.The COVID19 pandemic has brought great changes in society. The strong intervention of the public powers in the health crisis and the social impact that this has caused with the increase in poverty and inequality, are factors that can originate a social conflict around the redistribution of income and wealth. This article aims to discern from a study of the behavior of public opinion based on the Public Opinion Studies and Fiscal Policies of the CIS if there has been a change in support for strengthening the Welfare State, in fiscal matters and in the provision of public services and the redistribution capacity of public institutions.La pandemia del COVID19 ha comportado grandes cambios en la sociedad. La fuerte intervención de los poderes públicos en la crisis sanitaria y el impacto social que esta ha provocado con el aumento de la pobreza y la desigualdad, son factores que pueden originar un conflicto social entorno a la redistribución de ingresos y de riqueza. El presente artículo pretende discernir desde un estudio del comportamiento de la opinión pública basándose en los Estudios de Opinión Pública y Políticas Fiscal del CIS si se ha producido un cambio en el apoyo al fortalecimiento del Estado de Bienestar, en cuestiones fiscales y en la prestación de servicios públicos y la capacidad de redistribución de las instituciones públicas

    Análisis de dos sistemas agroalimentarios bajo la teoría de Luhmann

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    El presente artículo parte de una perspectiva comparativa sobre las iniciativas de valorización de dos alimentos en dos contextos sociopolíticos distintos, uno en América Latina y otro en Europa. El objetivo fue analizar dos Sistemas Agroalimentarios y sus estrategias para insertarse en las dinámicas local/global. El estudio se sustenta sobre una metodología mixta, con la combinación de técnicas cualitativas y cuantitativas. La teoría de Sistemas Sociales de Luhmann fue el eje discursivo para analizar de forma holística este fenómeno, debido a que las dinámicas generan acoplamientos estructurales y nuevas formas de organización en los procesos sociales de selección de alimentos. El estudio confirma que existen otras calidades no institucionalizadas, basadas en la confianza/reciprocidad entre agentes del sistema. Es decir, desde la teoría de Luhmann, se analiza que existen normas institucionales/no instituciones de código binario que regulan los procesos al interior de cada SA vinculado al origen. Lo enriquecedor del rompimiento de este paradigma radica en identificar las normativas no institucionales que devienen de la confianza-cooperación. Finalmente, la certificación de la calidad y la confianza de los consumidores son ejes que vertebran los flujos de comunicación en ambos casos, pero también en su relación con los sistemas político, económico y jurídico del entorno

    A western representative of an eastern clade: phylogeographic history of the gypsum-associated plant Nepeta Hispanica

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    The preference of certain plant species for gypsum soils with a patchy distribution leads to disjunct population structures that are thought to generate island-like dynamics potentially influencing biogeographic patterns at multiple evolutionary scales. Here, we study the evolutionary and biogeographic history of Nepeta hispanica, a western Mediterranean plant associated with gypsum soils and displaying a patchy distribution with populations very distant from each other. Three approaches were used: (a) interspecific phylogenetic analyses based on nuclear DNA sequences of the ITS region to unveil the relationships and times of divergence between N. hispanica and its closest relatives; (b) phylogeographic analyses using plastid DNA regions trnS-trnG and psbJ-petA to evaluate the degree of genetic isolation between populations of N. hispanica, their relationships and their genetic diversity; and (c) ecological niche modelling to evaluate historical distributional changes. Results reveal that N. hispanica belongs to an eastern Mediterranean and Asian (Irano-Turanian) clade diversified in arid environments since the Miocene-Pliocene. This species represents the only lineage of this clade that colonised the western Mediterranean, probably through the northern Mediterranean coast (southern Europe). Present Iberian populations display a high plastid genetic diversity and, even if geographically distant from each other, they are highly connected according to the distribution of plastid haplotypes and lineages. This can be explained by a scenario involving a complex history of back-and-forth colonisation events, facilitated by a relative stability of suitable conditions for the species across the western Mediterranean throughout the QuaternaryThis work would not have been possible without the support of Julian ´ García, Rub´en de Pablo, Jesús del Río, Leonardo Guti´errez, Javier Puente, Javier Pavon ´ and Luis M. Medrano, who helped us with field sample collection; Leopoldo Medina, Cyrille Chatelain, Jesús Riera and Javier Hernandez, ´ who granted us permission to use specimens from the MA, G, VAL and SALA herbaria respectively; and Emilio Cano, who provided his invaluable help in the RJB-CSIC molecular systematics laboratory. Fieldwork was financed by the Universidad Autonoma ´ de Madrid with a grant to IRG’s Master thesis. Laboratory work was funded by a Juan de la Cierva fellowship to MF-M (Spanish Ministry of Economy and Competitiveness, reference IJCI-2015–23459

    Resource allocation and management techniques for network slicing in WiFi networks

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    © 2020 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes,creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.Network slicing has recently been proposed as one of the main enablers for 5G networks; it is bound to cope with the increasing and heterogeneous performance requirements of these systems. To "slice" a network is to partition a shared physical network into several self-contained logical pieces (slices) that can be tailored to offer different functional or performance requirements. Moreover, a defining characteristic of the slicing paradigm is to provide resource isolation as well as efficient use of resources. In this context, the thesis described in this paper contributes to the problem of slicing WiFi networks by proposing a solution to the problem of enforcing and controlling slices in WiFi Access Points. The focus of the research is on a variant of network slicing called QoS Slicing, in which slices have specific performance requirements. In this document, we describe the two main contributions of our research, a resource allocation mechanism to assign resources to slices, and a solution to enforce and control slices with performance requirements in WiFi Access Points.This work has been supported by the European Commission and the Spanish Government (Fondo Europeo de Desarrollo Regional, FEDER) by means of the EU H2020 NECOS (777067) and ADVICE (TEC2015-71329) projects.Peer ReviewedPostprint (author's final draft

    Curcumin and Health

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    Nowadays, there are some molecules that have shown over the years a high capacity to act against relevant pathologies such as cardiovascular disease, neurodegenerative disorders or cancer. This article provides a brief review about the origin, bioavailability and new research on curcumin and synthetized derivatives. It examines the beneficial effects on health, delving into aspects such as cancer, cardiovascular effects, metabolic syndrome, antioxidant capacity, anti-inflammatory properties, and neurological, liver and respiratory disorders. Thanks to all these activities, curcumin is positioned as an interesting nutraceutical. This is the reason why it has been subjected to several modifications in its structure and administration form that have permitted an increase in bioavailability and effectiveness against different diseases, decreasing the mortality and morbidity associated to these pathologies

    Generation of a human iPSC line from a patient with Leigh syndrome caused by a mutation in the MT-ATP6 gene

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    Human iPSC line L749.1 was generated from fibroblasts of a patient with Leigh syndrome associated with a heteroplasmic mutation in the MT-ATP6 gene. Reprogramming factors OCT4, SOX2, CMYC and KLF4 were delivered using retroviruses.This work was supported by grants from the “Centro de Investigación Biomédica en Red en enfermedades raras” (CIBERER) (Grant 13-717/132.05 to RG), the “Instituto de Salud Carlos III” (FIS PI10/0703 and PI13/00556 to RG and PI15/00484 to MEG cofunded by FEDER), “Comunidad Autónoma de Madrid” (grant number S2010/BMD-2402 to R.G); T.G-M. receives grant support from the Universidad Autónoma de Madrid, FPI-UAM and F.Z-D. from the Ministerio de Educación, Cultura y Deporte, grant number FPU13/00544. M.E.G. is senior staff scientist at the “Centro de Investigación Biomédica en Red en Enfermedades Raras” (CIBERER

    Surface CuO, Bi2O3, and CeO2 species supported in TiO2-anatase: Study of Interface Effects in Toluene Photodegradation Quantum Efficiency

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    The enhancement of active triggered by surface deposition of Cu, Bi, and Ce containing oxidic species onto a high surface area anatase is analyzed through the calculation of the quantum efficiency for toluene photodegradation under UV and Sunlight-type illumination. To this end, series of Cu, Bi, and Ce containing oxides supported on anatase were synthesized having a growing content of the Cu, Bi, and Ce surface species and characterized with X-ray diffraction and photoelectron, UV-visible, and photoluminescence spectroscopies as well as transmission electron microscopy. Utilizing the surface concentration of Cu, Bi, and Ce species as a tool, we analyzed the influence of the system physicochemical properties affecting quantum efficiency in anatase-based materials. First, employing small surface concentrations of the Cu, Bi, and Ce species deposited onto (the unperturbed) anatase, we provided evidence that all steps of the photocatalytic event, including light absorption, charge recombination, as well as surface interaction with the pollutant and chemical output as to activity and selectivity have significance in the quantitative assessment of the enhancement of the efficiency parameter. Second, we analyzed samples rendering maximum quantum efficiency within all these series of materials. The study indicates that maximum enhancement over anatase displays a magnitude strongly dependent on the efficiency level of calculation and would thus require the use of the most accurate one, and that it occurs through a balance between optoelectronic and chemical properties of the composite materials. The (Cu, Bi, Ce) oxide-anatase interface plays a major role modulating the optoelectronic properties of the solids and thus the efficiency observableFinancial support by MINECO (ENE2013-46624-C4-1-R) is gratefully acknowledge
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