9,933 research outputs found

    From longing to belonging: Tracing the emotional geographies of ageing Filipina migrants in Valencia, Spain

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    As a consequence of neoliberalism of the global economy, the feminisation of labour has resulted in a care chain that draws women from the global south to leave their homes and families for higher salaries in the global north. Worldwide, it is an increasing concern, but policies are barely in place to safeguard the conditions of migrant workers, and those that exist are poorly enforced. The Philippines is one of the largest sending countries in the world. It is widely acknowledged that through their remittances, they sustain their families and the Philippine economy. Much literature has examined the phenomenon from perspectives of the families (specifically, children left behind) and their channels of communication, as well as what happens after they return from working overseas, but the emotional experiences of women who decide not to return but instead, build a life for themselves and their partners and families in the receiving country have been understudied. From conversations with women from the Philippines who have lived in Spain for more than 10 years, using the decolonising methodology of Sikolohiyang Pilipino ("Philippine Psychology"), this research gives place for their voices to be heard as they negotiate self-identity. Their narratives reflect Philippine emotional culture, particularly that of utang na loob and pag-aaruga. Their individual life stories may be unique, but they have experienced and continue to experience similar concerns. This research traces the trajectory of the emotional geographies of ageing Filipina migrants in Valencia, Spain by examining the church as an emotional site and the emotional strategies that Filipina migrants use in the process of be/longing.Como consecuencia del neoliberalismo de la economía mundial, la feminización del trabajo ha dado lugar a una cadena de cuidados que atrae a las mujeres del sur global a abandonar sus hogares y familias por salarios más altos en el norte global. En todo el mundo, esta es una preocupación cada vez mayor, pero apenas existen políticas para salvaguardar las condiciones de los trabajadores migrantes, y las que existen están mal aplicadas. Las Filipinas es uno de los países emisores más grandes del mundo. Es ampliamente reconocido que a través de sus remesas, sostienen a sus familias y a la economía Filipina. Existe una vasta literatura que ha examinado el fenómeno desde perspectivas de las familias (específicamente, los niños y niñas dejados atrás) y sus canales de comunicación, así como lo que tras regresar de trabajar en el extranjero, pero las experiencias emocionales de las mujeres que deciden no regresar y construir una vida para sí mismas y sus parejas y familias en el país receptor han sido poco estudiados. A partir de las conversaciones con mujeres de Filipinas que han vivido en España durante más de 10 años y utilizando la metodología descolonizadora de Sikolohiyang Pilipino (Psicología Filipina), esta investigación trata de ofrecer un lugar desde el que sus voces, en la constante negociación de la identidad propia, puedan ser escuchadas. Sus narraciones reflejan la cultura emocional de Filipinas, particularmente la de utang na loob y pag-aaruga. Sus historias de vida individuales pueden ser únicas, pero han experimentado y siguen experimentando preocupaciones similares. Esta investigación traza la trayectoria de las geografías emocionales del envejecimiento de migrantes Filipinas en Valencia, España examinando la iglesia como un lugar emocional así como las estrategias emocionales que utilizan en proceso de be/longing.MÁSTER ERASMUS MUNDUS GEMMA. XI EDICIÓ

    Characterisation and imaging of cortical impedance changes during interictal and ictal activity in the anaesthetised rat.

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    Epilepsy affects approximately 50 million people worldwide, and 20-30% of these cases are refractory to antiepileptic drugs. Many patients with intractable epilepsy can benefit from surgical resection of the tissue generating the seizures; however, difficulty in precisely localising seizure foci has limited the number of patients undergoing surgery as well as potentially lowered its effectiveness. Here we demonstrate a novel imaging method for monitoring rapid changes in cerebral tissue impedance occurring during interictal and ictal activity, and show that it can reveal the propagation of pathological activity in the cortex. Cortical impedance was recorded simultaneously to ECoG using a 30-contact electrode mat placed on the exposed cortex of anaesthetised rats, in which interictal spikes (IISs) and seizures were induced by cortical injection of 4-aminopyridine (4-AP), picrotoxin or penicillin. We characterised the tissue impedance responses during IISs and seizures, and imaged these responses in the cortex using Electrical Impedance Tomography (EIT). We found a fast, transient drop in impedance occurring as early as 12ms prior to the IISs, followed by a steep rise in impedance within ~120ms of the IIS. EIT images of these impedance changes showed that they were co-localised and centred at a depth of 1mm in the cortex, and that they closely followed the activity propagation observed in the surface ECoG signals. The fast, pre-IIS impedance drop most likely reflects synchronised depolarisation in a localised network of neurons, and the post-IIS impedance increase reflects the subsequent shrinkage of extracellular space caused by the intense activity. EIT could also be used to picture a steady rise in tissue impedance during seizure activity, which has been previously described. Thus, our results demonstrate that EIT can detect and localise different physiological changes during interictal and ictal activity and, in conjunction with ECoG, may in future improve the localisation of seizure foci in the clinical setting

    Probing the Effects of the Well-mixed Assumption on Viral Infection Dynamics

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    Viral kinetics have been extensively studied in the past through the use of spatially well-mixed ordinary differential equations describing the time evolution of the diseased state. However, emerging spatial structures such as localized populations of dead cells might adversely affect the spread of infection, similar to the manner in which a counter-fire can stop a forest fire from spreading. In a previous publication (Beauchemin et al., 2005), a simple 2-D cellular automaton model was introduced and shown to be accurate enough to model an uncomplicated infection with influenza A. Here, this model is used to investigate the effects of relaxing the well-mixed assumption. Particularly, the effects of the initial distribution of infected cells, the regeneration rule for dead epithelial cells, and the proliferation rule for immune cells are explored and shown to have an important impact on the development and outcome of the viral infection in our model.Comment: LaTeX, 12 pages, 22 EPS figures, uses document class REVTeX 4, and packages float, graphics, amsmath, and SIunit

    Giant Barocaloric Effect at the Spin Crossover Transition of a Molecular Crystal

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    The first experimental evidence for a giant, conventional barocaloric effect (BCE) associated with a pressure‐driven spin crossover transition near room temperature is provided. Magnetometry, neutron scattering, and calorimetry are used to explore the pressure dependence of the SCO phase transition in polycrystalline samples of protonated and partially deuterated [FeL2][BF4]2 [L = 2,6‐di(pyrazol‐1‐yl)pyridine] at applied pressures of up to 120 MPa (1200 bar). The data indicate that, for a pressure change of only 0–300 bar (0–30 MPa), an adiabatic temperature change of 3 K is observed at 262 K or 257 K in the protonated and deuterated materials, respectively. This BCE is equivalent to the magnetocaloric effect (MCE) observed in gadolinium in a magnetic field change of 0–1 Tesla. The work confirms recent predictions that giant, conventional BCEs will be found in a wide range of SCO compounds

    Can we (control) Engineer the degree learning process?

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    This paper investigates how control theory could be applied to learning processes in engineering education. The initial point for the analysis is White’s Double Loop learning model of human automation control modified for the education process where a set of governing principals is chosen, probably by the course designer. After initial training the student decides unknowingly on a mental map or model. After observing how the real world is behaving, a strategy to achieve the governing variables is chosen and a set of actions chosen. This may not be a conscious operation, it maybe completely instinctive. These actions will cause some consequences but not until a certain time delay. The current model is compared with the work of Hollenbeck on goal setting, Nelson’s model of self-regulation and that of Abdulwahed, Nagy and Blanchard at Loughborough who investigated control methods applied to the learning process

    How to Identify and Separate Bright Galaxy Clusters from the Low-frequency Radio Sky?

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    In this work we simulate the 5020050-200 MHz radio sky that is constrained in the field of view (55^{\circ} radius) of the 21 Centimeter Array (21CMA), by carrying out Monte-Carlo simulations to model redshifted cosmological reionization signals and strong contaminating foregrounds, including emissions from our Galaxy, galaxy clusters, and extragalactic point sources. As an improvement of previous works, we consider in detail not only random variations of morphological and spectroscopic parameters within the ranges allowed by multi-band observations, but also evolution of radio halos in galaxy clusters, assuming that relativistic electrons are re-accelerated in the ICM in merger events and lose energy via both synchrotron emission and inverse Compton scattering with CMB photons. By introducing a new approach designed on the basis of independent component analysis (ICA) and wavelet detection algorithm, we prove that, with a cumulative observation of one month with the 21CMA array, about 80%80\% of galaxy clusters with central brightness temperatures of >10 K> 10~{\rm K} at 65 MHz can be safely identified and separated from the overwhelmingly bright foreground. We find that the morphological and spectroscopic distortions are extremely small as compared to the input simulated clusters, and the reduced χ2\chi^2 of brightness temperature profiles and spectra are controlled to be 0.5\lesssim 0.5 and 1.3\lesssim 1.3, respectively. These results robustly indicate that in the near future a sample of dozens of bright galaxy clusters will be disentangled from the foreground in 21CMA observations, the study of which will greatly improve our knowledge about cluster merger rates, electron acceleration mechanisms in cluster radio halos, and magnetic field in the ICM.Comment: 35 pages, 10 figures, Accepted for publication in The Astrophysical Journa
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