Edificio de equipamiento dotacional para deportes de arena en Vitoria-Gasteiz

Castellano En la península ibérica y en el resto de Europa está creciendo el índice de personas que practican modalidades deportivas que se desarrollan en ambientes costeros y en buenas condiciones climáticas. Las limitaciones que supone el clima y la necesidad de playa, impiden la realización de estas actividades al no contar con instalaciones idóneas para estos deportes, disminuyéndose así la oferta y promoción de estos. Actualmente, existen pabellones deportivos preparados para asegurar confort a los usuarios en zonas donde el ambiente es desfavorable. No obstante, en España, y sobre todo en la zona Norte, carecen de ese tipo de instalaciones impidiendo el desarrollo de entrenamientos y competiciones en temporada de invierno. Por ello, se plantea la implantación de un edificio que subsane dichas carencias en el ámbito deportivo del interior del País Vasco, más en concreto en la ciudad de Vitoria-Gasteiz, donde predominan las bajas temperaturas y precipitaciones de larga duración a lo largo del año. En los documentos que se presentan, se trata de estudiar la viabilidad del proyecto y ofrecer una solución a un edificio con las características necesarias para satisfacer con este cometido, la práctica de deportes de arena en Vitoria-Gasteiz

The history of the Cité Balzac and the vicious circle of social housing

The history of the Cité Balzac, a housing complex built in the 1960’s in Vitry-sur-Seine, an emblematic “red suburb” in the south of Paris, reveals several transformations on public housing policies in France and some permanencies throughout five decades. Originally built to provide affordable housing for the inhabitants of problematic neighbourhoods within Paris, this large-scale complex inspired by post war architectural models and organized following functionalist urban-ism schemes has been initially occupied by an emerging middle class that left the apartments when private property became encouraged by a liberal government during the 1970’s. The social housing apartments were by then occupied by impoverished immigrants and French citizens coming from former colonies and became stigmatized as a symbol of social problems and ethnic conflicts. Recently, even being situated in a municipality dominated by the French Communist Party since 1920’s, the Cité Balzac was the epicentre of an intense urban renovation project led by the National Agency for Urban Renewal (ANRU), giving room to a controlled gentrification process that tried to erase the image of sensible neighbourhood that characterized this territory and its surroundings with the demolition of the bigger blocks and the ‘residentialization’ of the smaller ones. This project opened space for new housing blocks built by real estate and public works contractors based on private property to be occupied by middle class families that couldn’t afford to buy in Paris intramuros. This controlled gentrification happened gradually as the Grand Paris project was taking place, expanding the limits of the French capital to its closer suburbs with the extension and improvement of the public transportation system, feeding a vicious circle that raises fundamental issues about the role of social housing and its contradictions

A mixed formulation for the direct approximation of L2L^2-weighted controls for the linear heat equation

This paper deals with the numerical computation of null controls for the linear heat equation. The goal is to compute approximations of controls that drive the solution from a prescribed initial state to zero at a given positive time. In [Fernandez-Cara \& Münch, Strong convergence approximations of null controls for the 1D heat equation, 2013], a so-called primal method is described leading to a strongly convergent approximation of distributed control: the controls minimize quadratic weighted functionals involving both the control and the state and are obtained by solving the corresponding optimality conditions. In this work, we adapt the method to approximate the control of minimal square integrable-weighted norm. The optimality conditions of the problem are reformulated as a mixed formulation involving both the state and its adjoint. We prove the well-posedeness of the mixed formulation (in particular the inf-sup condition) then discuss several numerical experiments. The approach covers both the boundary and the inner situation and is valid in any dimension

Synthesis of Metal Boranes as Solid-State Electrolytes for Next Generation Battery Applications

Modifying conventional batteries by replacing liquid electrolytes with solid ionic conductors is a novel strategy for developing next-generation energy storage devices (solid-state batteries) with increased safety, energy density, and reduced costs. Metal-boranes have shown promising features as solid-state electrolytes, due to their high ionic conductivity and compatibility with alkali-metal anodes. The synthesised metal-boranes demonstrate promising properties for further research and application as solid-state electrolytes in batteries

Acute Specific Effects of Caffeine-containing Energy Drink on Different Physical Performances in Resistance-trained Men

International Journal of Exercise Science 11(4): 260-268, 2018. Caffeine containing energy drink (ED) is frequently used as ergogenic aid, but its effect on performance need more investigation. Thus, the aim of this study was to analyze the effects of acute ingestion of an ED on the physical performance of resistance-trained men subjected to successive tests in the same experimental protocol. Fifteen resistance-trained males (21.0 ± 0.3 yrs; 177.4 ± 1.8 cm; 79.6 ± 1.8 kg) ingested 2.5 mg caffeine per kg of body weight (619.5 ± 14.6 mL of ED) or a placebo in a double-blind randomized cross-over design. Physical performance was randomized for the maximum repetition tests (80% 1RM) in the bench press exercise and unilateral knee extension (dominant leg), maximal isometric hand-grip test in both hands, standing long jump and repeated sprint ability test. The paired Student-t test showed that ED intake increased performance compared to the placebo for the number of repetitions in the unilateral knee extension test of the dominant leg (11.5 ± 0.9 reps vs 9.5 ± 0.8 reps; P = 0.001) and bench press (10.2 ± 0.4 reps vs 8.1 ± 0.5 reps; P = 0.01); and also increased isometric strength in the hand-grip maximal test in the right (53.7 ± 1.5 kg vs. 47.7 ± 1.6 kg; P = 0.02) and left hand (52.9 ± 1.5 kg vs. 45.9 ± 1.3 kg; P = 0.02). In conclusion, acute ingestion of ED increased performance only in specific strength tests in resistance-trained men

Quantitative unique continuation for real-valued solutions to second order elliptic equations in the plane

In this article, we study a quantitative form of the Landis conjecture on exponential decay for real-valued solutions to second order elliptic equations with variable coefficients in the plane. In particular, we prove the following qualitative form of Landis conjecture, for $W_1, W_2 \in L^{\infty}(\mathbb R^2;\mathbb R^2)$, $V \in L^{\infty}(\mathbb R^2;\mathbb R)$ and $u \in H_{\mathrm{loc}}^{1}(\mathbb R^2)$ a real-valued weak solution to $-\Delta u - \nabla \cdot ( W_1 u ) +W_2 \cdot \nabla u + V u = 0$ in $\mathbb R^2$, satisfying for $\delta>0$, $|u(x)| \leq \exp(- |x|^{1+\delta})$, $x \in \mathbb R^2$, then $u \equiv 0$. Our methodology of proof is inspired by the one recently developed by Logunov, Malinnikova, Nadirashvili, and Nazarov that have treated the equation $-\Delta u + V u = 0$ in $\mathbb R^2$. Nevertheless, several differences and additional difficulties appear. New weak quantitative maximum principles are established for the construction of a positive multiplier in a suitable perforated domain, depending on the nodal set of $u$. The resulted divergence elliptic equation is then transformed into a non-homogeneous $\partial_{\overline{z}}$ equation thanks to a generalization of Stoilow factorization theorem obtained by the theory of quasiconformal mappings, an approximate type Poincar\'e lemma and the use of the Cauchy transform. Finally, a suitable Carleman estimate applied to the operator $\partial_{\overline{z}}$ is the last ingredient of our proof.Comment: Comments welcom