Urban cartographies: the graphic representation of the conflict in public spaces

[EN] Contemporaneousness has represented, in different formats, situations that are socially unstable and capable of transforming urban public spaces. The 20th century, since its beginnings, has been proof of that, generating documents of irregular technical quality but of undoubted interest. Those who have elaborated them have participated, sometimes individually and in some other times as a collective, creating planimetries that contribute to the understanding of conflictive situations in present-day Europe. This context has brought about a renewed reading and a generation of maps that reflect these sociopolitical upheavals. Faced with plans of a precise nature and with an eagerness to record reality, in the face of propositional documents that reflect the planned evolution of populations and territories, we present some cartographies that, simultaneously, contemplate unforeseen transformations of the existing city, ephemeral, while establishing future developments of uncertain materialization. It is a unique set of documents that concentrate layers of cartographic and social information transcendent for our time.[ES] La contemporaneidad ha representado, en diferentes formatos, situaciones socialmente inestables y capaces de transformar los espacios públicos urbanos. El siglo xxi, en sus inicios, ha dado muestras de lo anterior, generando documentos de calidad técnica irregular pero de indudable interés. Quienes los han elaborado han participado, en ocasiones de manera individual y en otras como colectivo, creando unas planimetrías que contribuyen al entendimiento de situaciones conflictivas en la Europa actual. Este contexto ha hecho que se produzca una renovada lectura y generación de mapas que reflejan estas convulsiones sociopolíticas. Frente a planos de carácter preciso y con afán de registro de la realidad, frente a documentos propositivos que recogen la evolución planificada en el tiempo de poblaciones y territorios, presentamos unas cartografías que, simultáneamente, contemplan transformaciones imprevistas de la ciudad existente, de carácter efímero, al tiempo que establecen desarrollos futuros de incierta materialización. Es un conjunto singular de documentos que concentran capas de información cartográfica y social trascendentes para nuestra época.Moral Andrés, F.; Merino Gómez, E. (2018). Cartografías urbanas: la representación gráfica del conflicto en los espacios públicos. EGA. Revista de Expresión Gráfica Arquitectónica. 23(32):262-273. doi:10.4995/ega.2018.7973SWORD2622732332Debord, G., 2010. La sociedad del espectáculo. Valencia: Pre-textos.Perniola, M. 2010. Los situacionistas. Historia crítica de la última vanguardia del siglo xx. Madrid: Acuarela - Machado GrupoStamps, L., Stokvis, W. et al. 2015. Constant. Nueva Babilonia. Madrid: Museo Nacional Centro de Arte Reina Sofí

Digitally continuous multivalued functions

We introduce in this paper a notion of continuity in digital spaces which extends the usual notion of digital continuity. Our approach uses multivalued maps. We show how the multivalued approach provides a better framework to define topological notions, like retractions, in a far more realistic way than by using just single-valued digitally continuous functions. In particular, we characterize the deletion of simple points, one of the most important processing operations in digital topology, as a particular kind of retraction

A second order pvm flux limiter method. Application to magnetohydrodynamics and shallow stratified flows

In this work we propose a second order flux limiter finite volume method, named PVM-2U-FL, that only uses information of the two external waves of the hyperbolic system. This method could be seen as a natural extension of the well known WAF method introduced by Prof. Toro in [21]. We prove that independently of the number of unknowns of the 1D system, it recovers the second order accuracy at regular zones, while in presence of discontinuities, the scheme degenerates to PVM-2U method, which can be seen as an improvement of the HLL method (see [4], [8]). Another interesting property of the method is that it does not need any spectral decomposition of the Jacobian or Roe matrix associated to the flux function. Therefore, it can be easily applied to systems with a large number of unknowns or in situations where no analytical expression of the eigenvalues or eigenvectors are known. In this work, we apply the proposed method to Magnetohydrodynamics and to stratified multilayer flows. Comparison with the twowaves WAF and HLL-MUSCL methods are also presented. The numerical results show that PVM-2U-FL is the most efficient and accurate among them

IFCP Riemann solver: Application to tsunami modelling using GPUs

In this work, we present a simplified two-layer model of Savage-Hutter type to simulate tsunamis generated by landslides (see (Fern´andez et al. 2008)). A layer composed of fluidized granular material is assumed to flow within an upper layer composed of an inviscid fluid (e.g. water). The sediment layer ismodelled by a Savage-Hutter type model where buoyancy effects have been considered. The system is discretized using IFCP finite volume scheme. The first order IFCP scheme was introduced in (Fern´andez et al. 2011) and it is constructed by using a suitable decomposition of a Roe matrix by means of a parabolic viscosity matrix, that captures information of the intermediate fields (Intermediate Field Capturing Parabola). Its extension to high order and two-dimensional domains is straightforward. To conclude, some numerical examples are presente

Efficient GPU implementation of a two waves TVD-WAF method for the two-dimensional one layer Shallow Water system on structured meshes.

The numerical solutions of shallow water equations are useful for applications related to geophysical flows that usually take place in large computational domains and could require real time calculation. Therefore, parallel versions of accurate and efficient numerical solvers for high performance platforms are needed to be able to deal with these simulation scenarios in reasonable times. In this paper we present an efficient CUDA implementation of a first and second order HLL methods and a two-waves TVD-WAF one. We propose to write all these methods under a common framework, such as, their CUDA implementations share the same structure. In particular, the reformulation of TVD-WAF numerical flux and the improved definition of the flux limiter allows us to obtain a more robust solver in situations like wet/dry fronts. Finally, some numerical tests are presented showing that the TVD-WAF method is slightly slower that the first order HLL method and two times faster than the second order HLL method, but it provides numerical results almost as accurate as the second order HLL scheme

Propiedades estructurales en 2-digrafos de Cayley óptimos sobre grupos abelianos finitos

En este trabajo se presentan algunas propiedades estructurales de los digrafos de Cayley de grado dos con diámetro óptimo, sobre grupos finitos abelianos. En particular, cuando el grupo no es cíclico, todos los digrafos cociente tienen diámetro óptimo. También se dan condiciones para obtener expansiones de estos digrafos con diámetro óptimo. La herramienta principal para obtener estos resultados es una forma geométrica plana, asociada al digrafo, conocida como diagrama de distancias m´ınimas.Postprint (published version

Assessment of the potential value of plasma Torque Teno virus DNA load monitoring to predict cytomegalovirus DNAemia in patients with hematological malignancies treated with small molecule inhibitors: A proof-of-concept study

T-cells; Ibrutinib; DNA loadCélulas T; Ibrutinib; Carga de ADNCèl·lules T; Ibrutinib; Càrrega d'ADNIt is unknown whether Torque Teno virus (TTV) DNA load monitoring could anticipate the development of infectious events in hematological patients undergoing treatment with small molecular targeting agents. We characterized the kinetics of plasma TTV DNA in patients treated with ibrutinib or ruxolitinib and assessed whether TTV DNA load monitoring could predict the occurrence of Cytomegalovirus (CMV) DNAemia or the magnitude of CMV-specific T-cell responses. Multicenter, retrospective, observational study, recruiting 20 patients treated with ibrutinib and 21 with ruxolitinib. Plasma TTV and CMV DNA loads were quantified by real-time PCR at baseline and days +15, +30, +45, +60, +75, +90, +120, +150, and +180 after treatment inception. Enumeration of CMV-specific interferon-γ (IFN-γ)-producing CD8+ and CD4+ T-cells in whole blood was performed by flow cytometry. Median TTV DNA load in ibrutinib-treated patients increased significantly (p = 0.025) from baseline (median: 5.76 log10 copies/mL) to day +120 (median: 7.83 log10 copies/mL). A moderate inverse correlation (Rho = −0.46; p < 0.001) was found between TTV DNA load and absolute lymphocyte count. In ruxolitinib-treated patients, TTV DNA load quantified at baseline was not significantly different from that measured after treatment inception (p ≥ 0.12). TTV DNA load was not predictive of the subsequent occurrence of CMV DNAemia in either patient group. No correlation was observed between TTV DNA loads and CMV-specific IFN-γ-producing CD8+ and CD4+ T-cell counts in either patient group. The data did not support the hypothesis that TTV DNA load monitoring in hematological patients treated with ibrutinib or ruxolitinib could be useful to predict either the occurrence of CMV DNAemia or the level of CMV-specific T-cell reconstitution; nevertheless, due to the small sample size, further studies involving larger cohorts are warranted to elucidate this issue.Estela Giménez (Juan Rodés Contract, JR18/00053) and Eliseo Albert (Juan Rodés Contract; JR20/00011) hold contracts funded by the Carlos III Health Institute (co-financed by the European Regional Development Fund, ERDF/FEDER). This research was supported by a grant from FIS PI18/00127 (Fondo de Investigaciones Sanitarias), Ministerio de Sanidad y Consumo, Spain)