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Title: Improved decryption quality and security of a joint transform correlator-based encryption system
Authors: Vilardy, Juan Manuel; Millán Garcia-Varela, M. Sagrario; Pérez Cabré, Elisabet
Title: A 3D temporal evolutionary numerical model of a masonry building in Barcelona subjected to tunnelling subsidence
Authors: Camos Andreu, Carles; Molins i Borrell, Climent
Abstract: The aim of this work is to deepen the knowledge of the numerical simulation used in the prediction of building dam age produced by tunnel ling subsidence. This
paper analyzes the structural response of a one-storey building subjected to real ground movements experienced during the construction of the L9 Metro line tunnel in Barcelona, bored by a Earth Pressure Balance Machine (EPB) Tunnel Boring Machine (TBM). A 3D temporal evolutionary numerical model is
used to predict the damage in the building resulting from tunnelling subsidence. The real structural damage presented is compared with the predictions of the numerical model. This last task can be done since the measures of real ground movements given by the monitoring instruments, such as retro
-reflective prisms and total stations, are available for this research. Main model parameters have been determined by means of characterization experiments developed on the site and in the laboratory, thus giving a higher significance to the analysis.
Title: Bioclimatism in vernacular architecture
Authors: Coch Roura, Helena
Abstract: Any analysis of the role played by energy in architecture is faced with serious limitations due to the lack of studies in the architectural bibliography, especially studies of popular architecture. An awareness of these limitations will allow us to understand better why architects have paid little attention to the interaction of form and energy, and to the bioclimatic approach in contemporary architecture in general. The first limitation stems from the very essence of bioclimatic analysis; energy is immaterial, difficult to represent in images, changing in time and wrongfully left out of the architectural literature. This is why it is difficult to find a basic knowledge of the functional aesthetic possibilities of bioclimatism in the cultural experience of present-day architects. The second limitation to this knowledge, even more important than the previous one, is the low value given to the more anonymous popular architecture as opposed to representative architecture. The latter is the kind of architecture built by established power, which attempts to impress the observer and clashes with, dominates, and often destroys the natural environment. This style of architecture is crammed with theoretical aesthetic concerns, which would rather create artificial environments than be integrated in the natural milieu. To sum up, it is the architecture undertaken by well-known authors, found in important buildings, which have been commented and widely appreciated by architecture critics throughout history. Nowadays, representative architecture can be said to describe the architecture found in large office buildings, which embody the legacy of such works from the history of culture as the pyramids, classic shrines, medieval castles and large Gothic cathedrals, baroque and Renaissance palaces, etc. These modern buildings, clad in glass as a symbol of their modernity, are incongruously dark and require artificial lighting during the day, while the flimsy casing separating them from the outside makes it necessary to use air conditioning all year round, even when outside conditions are pleasant. We can well affirm that these buildings are so wrong that they work worse than the climate. In comparison with this type of representative architecture, we find popular architecture, performed by the people as a direct response to their needs and values. These buildings show a greater respect for the existing environment, whether natural or artificial. They do not reflect theoretical aesthetic pretensions and use local materials and techniques as far as possible, repeating over and over again the course of history models which take the constraints imposed by the climate fully into account. Our popular architecture—so often forgotten in official circles—may well be the kind which can best teach us today how to assimilate the bioclimatic approach in the practice of architectural design. However, we should not consider these solutions to be models to copy in current architecture. Our technical capacity and our cultural grounding prevent us from returning to these obsolete architecture forms, but what may be of use as a lesson and a source of inspiration is the attitude of the builders of this popular architecture, which recovers a relationship to the environment which has been lost in the more official architecture of the 20th century.
Title: Paisatges metropolitans : policentrisme, dilatacions, multiperifèries i microperifèries : del paisatge clixé al paisatge calidoscopi
Authors: Llop Torné, Carles Joan
Description: Carles Llop presenta les dinàmiques i els elements més substancials dels paisatges metropolitans i reivindica el valor dels conceptes i instruments desplegats des del planejament territorial i des dels principis de sostenibilitat ambiental per donar resposta a la fase actual de la ciutat. En concordança amb aquest objectiu, l’autor planteja el repte d’un projecte territorial renovat, basat en la reinvenció dels paisatges.
Title: Ecobrick: a new cevanic material for solar buildings
Authors: Cusidó Fàbregas, Joan Antoni; Devant Guille, Martí V.F.; Celebrovsky, M.; Riba Vilanova, Josep; Arteaga, F.
Abstract: Ceramic materials technology has been known for a very long time. In the construction field, ceramics are considered ecological or natural materials with acceptable structural and thermal characteristics. Besides, these characteristics can be improved by changing the composition of the raw material. In this respect the Ecobrick(R) Project aims at optimizing some of those properties and achieving thereby important environmental benefits.
In our study, we used sludges from urban wastewater treatment plants together with other wastes and clays, to produce a new ceramic material suitable for construction. When using Ecobrick(R), energy consumption can be reduced up to 49% and the Solar Saving Fraction will increase up to 14% compared both to conventional ceramics.
Title: Gaseous emissions from ceramics manufactured with urban sewage sludge during firing processes
Authors: Cusidó Fàbregas, Joan Antoni; Cremades Oliver, Lázaro Vicente; González Benítez, María Margarita
Abstract: The re-use of sewage sludge without any treatment as primary material—mixed with clays—in order to obtain structural ceramics for buildings has been successfully improved. In the Ecobrick® project, the firing of a mixture of specific percentages of three components (clays, sludges and forest debris) resulted in a lighter and more thermal and acoustic insulating brick, compared with conventional clay-bricks. Volatile organic compounds (VOC) emission from the manufacturing of ceramics is the most important aspect to control. In the Ecobrick® project VOC emissions were monitored by using a bench-scale furnace. The study was conducted using an EPA recommended sampling train and portable sampling tubes that were thermally desorbed and analyzed by gas chromatography/mass spectrometry. Drying of raw sewage-sludge and firing processes were considered separately. In this paper, we present VOC emissions coming from the firing step of the Ecobrick® production
Title: Biometric characterization of the anterior segment in a Sahrawi pediadric population
Authors: Pérez Cambrodí, Rafael; Sañudo Buitrago, Francisco; Ruíz Fortés, Juan Pedro; Cardona Torradeflot, Genís
Title: Autoretrat: dos projectes urbans en construcció
Authors: Solà-Morales Rubió, Manuel de; Amador, Ferrer; Muxí Martínez, Zaida
Title: "Jocs i impossibles" de Pep García Cors
Authors: Salvador, Ton; Usandizaga Calparsoro, Miguel M.
Title: Que se integren ellos: sobre los estudios de arquitectura españoles en el Espacio Europeo de Educación Superior (I: octubre 2007)
Authors: Salvadó Cabré, Anton Maria; Usandizaga Calparsoro, Miguel M.
Title: Problemas de visión causantes y no causantes de impedimento visual en una población laboral de Cataluña
Authors: Guisasola València, Laura; Tresserras, Ricard; Rius Ulldemolins, Anna; López-Dóriga, Adriana; Purtí, Elisabeth
Title: Torre-sana, proceso abierto
Authors: Muxí Martínez, Zaida
Title: Llenar un vacío
Authors: Monteys Roig, Xavier; Callís Freixas, Eduard; Puigjaner Barberà, Anna
Title: La ciutat, la cantonada i la casa
Authors: Monteys Roig, Xavier; Callís Freixas, Eduard; Puigjaner Barberà, Anna
Title: Influence of chlorothalonil on the removal of organic matter in horizontal subsurface flow constructed wetlands
Authors: Casas Zapata, Juan C.; Ríos, Karina; Florville Alejandre, Tomás; Morató Farreras, Jordi; Peñuela, Gustavo
Title: Power efficiency of SARDANA and other long-reach optical acces networks
Authors: Lovric, Ana; Aleksic, Slavisa; Lázaro Villa, José Antonio; Tosi Beleffi, Giorgio; Prat Gomà, Josep Joan; Polo Querol, Víctor
Abstract: Different long-reach optical access networks are studied with respect to their power efficiency. Special focus is dedicated to the hybrid TDM/WDM PON proposed in the SARDANA project, in which remote amplification is utilized for reach extension. The structures of the remote nodes and subsystems for reach extension are shown and discussed. The influence of uplink capacity limitation on power efficiency is evaluated, i.e., the access networks' efficiencies are presented for different CO capacities in terms of Watt per user and per Gbit/s of user's bandwidth as a function of number of users connected to the CO. The results show remarkable power efficiency degradation for high-speed access technologies in case of strong uplink limitation, while for unlimited uplink case, 10G-EPON and SARDANA networks show the best efficiency.
Description: Best Paper of ONDM'2011
Title: Stochastic Phase-Field simulations of symmetric alloy solidification
Authors: Benítez Iglesias, Raúl; Ramírez de la Piscina Millán, Laureano
Abstract: We study initial transient stages in directional solidification by means of a non-variational phase field model with fluctuations. This model applies for the symmetric solidification of dilute binary solutions and does not invoke fluctuation-dissipation theorem to account for the fluctuation statistics. We devote our attention to the transient regime
during which concentration gradients are building up and fluctuations act to destabilize the interface. To this end, we calculate both the temporally dependent growth rate of each mode and the power spectrum of the interface evolving under the effect of fluctuations.
Quantitative agreement is found when comparing the phase-field simulations with
Title: Les formes clàssiques de les coses comunes
Authors: Llecha Capdevila, Juan
Title: Phase-field models in interfacial pattern formation out of equilibrium
Authors: González Cinca, Ricardo; Folch, R; Benítez Iglesias, Raúl; Ramírez de la Piscina Millán, Laureano; Casademunt, J; Hrndez-Machado, A
Title: Retos de la formación práctica tutelada en los planes de estudio de las titulaciones de grado en óptica y optometria
Authors: Guaus Guerrero, Ester