2,144 research outputs found

    Working Conditions After an Economic Crisis in Spain: “No Calm After the Storm

    Get PDF
    Working Conditions After an Economic Crisis in Spain: “No Calm After the Storm”. Working conditions during the economic crisis of the first decade of the 21st century have been the object of extensive research. This study delves into the main risks facing workers subsequent to the recession and economic crisis of 2008-2014 and prior to the unsettling times provoked by the COVID-19 pandemic and the war in Ukraine. The choice of Spain as the study area stems from the deep effects of the economic crisis on this country and the fragmentation of its trade unions. Spain is likewise relevant as its authorities adopted two opposite strategies (respectively austerity followed by expansive investment) to cope and counter these problems over time. This qualitative study comprises in-depth interviews with 45 experts from various sectors of business. The findings suggest that factors such as persistent job insecurity and work overload profoundly affect the social environment and relationships of employees both at work and in the family generating individual coping strategies that weaken the role of trade unions.Research project B-SEJ-418-UGR20FEDER/Junta de Andalucía-Consejería de Transformación Económica, Industria, Conocimiento y Universidade

    The influence of glazing over the parameters and energy rating according to the building orientation and the façade openings percentages

    Get PDF
    Es bien conocida la importancia de los cristales en la demanda de energía del edificio, ya que la envolvente térmica es lo más importante. En este trabajo se ha realizado un estudio de la influencia de la transmitancia térmica (factor U) y el factor solar (valor g) de tres tipos diferentes de acristalamiento en la calificación energética. Se ha realizado el análisis en una vivienda unifamiliar situada en la ciudad de Sevilla, España, con diferentes hipótesis, en concreto seis porcentajes de apertura que van desde 10 a 60% considerado por el Código Técnico de la Edificación español, y cuatro orientaciones según las direcciones cardinales. Para los tipos de zona climático y acristalamiento considerados, el valor del parámetro g tiene mayor incidencia en el rendimiento energético que la transmitancia térmica. Se ha establecido qué orientación proporciona mayor ahorro de energía, independientemente de la demanda de calefacción y enfriamiento y de la calificación energética. Además, hay que considerar los valores ideales de ambos parámetros para cada orientación con el fin de mejorar la calificación energética. Por lo tanto, al seleccionar un tipo de acristalamiento, sería importante tener en cuenta los mejores valores de los parámetros "T" y "g" para cada orientación con el fin de obtener menor gasto de energía.It is well known the significant impact of glazing over the building energy demand making it the thermal envelope’s most important part. A study of the influence of thermal transmittance (U-factor) and solar factor (g-value) of three different glazing types over the parameters and energy rating are shown in this paper. A single-family dwelling located in Seville city, Spain, has been analyzed to which a set of hypotheses, six opening percentages ranging from 10 to 60% considered by the Spanish Building Code on its simplified option, and different combinations, four orientations matching the cardinal directions, has been applied. For the climate zone and glazing types considered, the g-value parameter has a higher incidence on the global demand and energy rating than thermal transmittance. It is established which orientation greater energy savings can be achieved independently for heating, cooling demand and energy rating. Also the ideal values for both parameters that should be considered in each orientation in order to improve the energy rating. Therefore, when selecting a type of glazing it would be important to consider the best “U” and “g” parameter values together for each orientation in order to get the lowest energy demand possible

    Populations of breeding birds in Byers Peninsula, Livingston Island, South Shetland Islands

    Get PDF
    Data about breeding populations of birds in the Antarctica are rare and fragmented. Thus, information about the status of the breeding populations of Antarctic birds is crucial given the current scenario of climate change, which is particularly acute in Antarctica. This paper presents new information about the populations of the Antarctic tern Sterna vittata, the kelp gull Larus dominicanus, the southern giant petrel Macronectes giganteus, the Antarctic skua Catharacta antarctica lonnbergi, the chinstrap penguin Pygoscelis antarctica and the gentoo penguin Pygoscelis papua on Byers Peninsula (Livingston Island, South Shetland Islands). We used line transects counts to estimate both densities and numbers of nests of the different species. We estimate that there are 398.96 birds km-2 of southern giant petrels (2793 individuals), 62.4 birds km-2 of Antarctic tern (3746 individuals) and 269.1 birds km-2 of kelp gull (1884 individuals). Furthermore, we found 15 nests of Antarctic skua in 25 km2, from which we can estimate that 6091 birds must breed on Byers Peninsula. We also censused two colonies of gentoo penguins (3000 and 1200 pairs) and 50 pairs of chinstrap. Compared to previous estimates, gentoo penguins seem to have increased whereas chinstrap penguin have decreased. Finally, the populations of Antarctic tern, southern giant petrel and kelp gull have stabilized or slightly increased

    On the Reusability of User Interface Declarative Models

    Get PDF
    The automatic generation of user interfaces based on declarative models achieves a significant reduction of the development effort. In this paper, we analyze the feasibility of using two well-known techniques such as XInclude and Packaging in the new context of reusing user-interface model specifications. After analyzing the suitability of each technique for UI reutilization and implementing both techniques in a real system, we show that both techniques are suited to be used within the context of today’s existing model-based user interfaces

    Reusing UI elements with Model-Based User Interface Development

    Get PDF
    This paper introduces the potential for reusing UI elements in the context of Model-Based UI Development (MBUID) and provides guidance for future MBUID systems with enhanced reutilization capabilities. Our study is based upon the development of six inter-related projects with a specific MBUID environment which supports standard techniques for reuse such as parametrization and sub-specification, inclusion or shared repositories. We analyze our experience and discuss the benefits and limitations of each technique supported by our MBUID environment. The system architecture, the structure and composition of UI elements and the models specification languages have a decisive impact on reusability. In our case, more than 40% of the elements defined in the UI specifications were reused, resulting in a reduction of 55% of the specification size. Inclusion, parametrization and sub-specification have facilitated modularity and internal reuse of UI specifications at development time, whereas the reuse of UI elements between applications has greatly benefited from sharing repositories of UI elements at run time.Ministerio de Ciencia e Innovación DPI2010-19154Junta de Andalucía TIC-633

    Strongly interacting WLWL, Z(L)Z(L) and hh from unitarized one-loop computations

    Get PDF
    Recently, a new boson h has been discovered at the LHC which, so far, is compatible with the properties of the SM Higgs. However, the SM is not the most general low-energy dynamics for the minimal electroweak symmetry breaking sector with three Goldstone bosons and one light scalar. By using non-linear effective Lagrangian for these four particles we study different processes at one-loop precision, identifying the counterterms needed to cancel the divergences. Then we apply the IAM unitarization method on the partial waves, both to make more realistic predictions which could be tested at the LHC and to discuss the limitations of the one-loop computations. The studied processes are the elastic scattering amplitude for both the longitudinal components of the gauge bosons V = W, Z and the hh → hh, as well as the inelastic VV → hh

    Coupling WW, ZZ unitarized amplitudes to gamma gamma in the TeV region

    Get PDF
    We define and calculate helicity partial-wave amplitudes for processes linking the Electroweak Symmetry Breaking Sector (EWSBS) to γ γ , employing (to NLO) the Higgs-EFT (HEFT) extension of the Standard Model and the Equivalence Theorem, while neglecting all particle masses. The resulting amplitudes can be useful in the energy regime (500 GeV−3 TeV). We also deal with their unitarization so that resonances of the EWSBS can simultaneously be described in the γ γ initial or final states. Our resulting amplitudes satisfy unitarity, perturbatively in α, but for all s values. In this way we improve on the HEFT that fails as interactions become stronger with growing s and we provide a natural framework for the decay of dynamically generated resonances into W W, Z Z and γ γ pairs

    Study by DTA/TG of the formation of calcium aluminate obtained from an aluminium hazardous waste

    Get PDF
    A Spanish hazardous waste from tertiary aluminium industry was used as a raw material for the synthesis of calcium aluminate. An amorphous precursor was obtained by a hydrothermal method at different values of pH. The transformation of the precursor in a crystalline aluminate was followed by TG/DTA up to 1300 C. At temperatures between 719 and 744 C, the precursors evolve towards the formation of C12A7 which becomes CA at circa 1016 C. Mass spectrometry coupled to thermal analyser allowed the identification of the decomposition productsMEC for financing project CTM2005-01964 and the company Recuperaciones y Reciclajes Roman S.L. (Fuenlabrada, Madrid, Spain) for supplying the waste and Dr. M. I. Martı´n for the FRX analysis and Dr. I. Padilla for the technical assistance. Laura Delgado-Gonzalo is grateful to the CSIC (Spanish National Research Council) for an I3P contractPeer reviewe

    Flipped Classroom Teaching in Organic Chemistry in the Context of CLIL

    Get PDF
    This paper proposes an experience that involves the methodological model of the flipped classroom with the introduction of foreign language teaching, to promote the acquisition of transversal and linguistic skills in three subjects of the Degree in Chemistry at the University of Huelva (Spain). This proposal includes the implementation of this methodology in different didactic units of each one of the subjects. The method is developed in 4 different phases, starting with the programming of the experience; elaboration of the teaching material for its development, based on the autonomous work of the students; to the classroom work and resolution of doubts that take place in the classroom. The implementation of this teachinglearning experience has been globally successful
    corecore