http://hdl.handle.net/2117/3085 Thu, 20 Jun 2013 02:32:39 GMT 2013-06-20T02:32:39Z webmaster.bupc@upc.edu Universitat Politècnica de Catalunya. Servei de Biblioteques i Documentació no http://hdl.handle.net/2117/19147 Title: Scaling laws and the modern city Authors: Isalgue Buxeda, Antonio; Coch Roura, Helena; Serra Florensa, Rafael Abstract: A detrended fluctuation analysis (DFA) is applied to the statistics of Korean treasury bond (KTB) futures from which the logarithmic increments, volatilities, and traded volumes are estimated over a specific time lag. In this study, the logarithmic increment of futures prices has no long-memory property, while the volatility and the traded volume exhibit the existence of the long-memory property. To analyze and calculate whether the volatility clustering is due to a inherent higher-order correlation not detected by with the direct application of the DFA to logarithmic increments of KTB futures, it is of importance to shuffle the original tick data of future prices and to generate a geometric Brownian random walk with the same mean and standard deviation. It was found from a comparison of the three tick data that the higher-order correlation inherent in logarithmic increments leads to volatility clustering. Particularly, the result of the DFA on volatilities and traded volumes can be supported by the hypothesis of price changes. Thu, 09 May 2013 10:56:38 GMT http://hdl.handle.net/2117/19147 2013-05-09T10:56:38Z Isalgue Buxeda, Antonio; Coch Roura, Helena; Serra Florensa, Rafael no A detrended fluctuation analysis (DFA) is applied to the statistics of Korean treasury bond (KTB) futures from which the logarithmic increments, volatilities, and traded volumes are estimated over a specific time lag. In this study, the logarithmic increment of futures prices has no long-memory property, while the volatility and the traded volume exhibit the existence of the long-memory property. To analyze and calculate whether the volatility clustering is due to a inherent higher-order correlation not detected by with the direct application of the DFA to logarithmic increments of KTB futures, it is of importance to shuffle the original tick data of future prices and to generate a geometric Brownian random walk with the same mean and standard deviation. It was found from a comparison of the three tick data that the higher-order correlation inherent in logarithmic increments leads to volatility clustering. Particularly, the result of the DFA on volatilities and traded volumes can be supported by the hypothesis of price changes. http://hdl.handle.net/2117/19084 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. Thu, 02 May 2013 13:52:36 GMT http://hdl.handle.net/2117/19084 2013-05-02T13:52:36Z Coch Roura, Helena no 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. http://hdl.handle.net/2117/18902 Title: The Mediterranean blind: Less light, better vision Authors: Coch Roura, Helena; Serra Florensa, Rafael; Isalgue Buxeda, Antonio Fri, 19 Apr 2013 14:24:48 GMT http://hdl.handle.net/2117/18902 2013-04-19T14:24:48Z Coch Roura, Helena; Serra Florensa, Rafael; Isalgue Buxeda, Antonio no http://hdl.handle.net/2117/18901 Title: Summer confort solutions in mediterranean areas Authors: Coch Roura, Helena; Serra Florensa, Rafael Abstract: The climate of Mediterranean countries is characterized by its complexity. Rapidly changing conditions mean that both cold and heat can be a problem. In architectural practice the design solutions that must be applied in buildings are complex. Solutions for summer comfort in Mediterranean areas also reflect this complexity. The causes of summer discomfort will be described and some examples of solutions against these will be showed and analized. Fri, 19 Apr 2013 13:58:07 GMT http://hdl.handle.net/2117/18901 2013-04-19T13:58:07Z Coch Roura, Helena; Serra Florensa, Rafael no The climate of Mediterranean countries is characterized by its complexity. Rapidly changing conditions mean that both cold and heat can be a problem. In architectural practice the design solutions that must be applied in buildings are complex. Solutions for summer comfort in Mediterranean areas also reflect this complexity. The causes of summer discomfort will be described and some examples of solutions against these will be showed and analized. http://hdl.handle.net/2117/18834 Title: A national perspective on Spain's building sector : a roadmap for a new housing sector Authors: Cuchí Burgos, Alberto; Sweatman, Peter Tue, 16 Apr 2013 17:25:49 GMT http://hdl.handle.net/2117/18834 2013-04-16T17:25:49Z Cuchí Burgos, Alberto; Sweatman, Peter no http://hdl.handle.net/2117/18641 Title: GTR'S 2012 report : a national perspective on Spain's building sector : action plan for a new housing sector Authors: Cuchí Burgos, Alberto; Sweatman, Peter; Pagès Ramon, Anna Fri, 05 Apr 2013 11:13:22 GMT http://hdl.handle.net/2117/18641 2013-04-05T11:13:22Z Cuchí Burgos, Alberto; Sweatman, Peter; Pagès Ramon, Anna no http://hdl.handle.net/2117/18610 Title: Informe GTR 2012 : una visión-país para el sector de la edificación en España : plan de acción para un nuevo sector de la vivienda Authors: Cuchí Burgos, Alberto; Sweatman, Peter; Pagès Ramon, Anna Thu, 04 Apr 2013 11:55:34 GMT http://hdl.handle.net/2117/18610 2013-04-04T11:55:34Z Cuchí Burgos, Alberto; Sweatman, Peter; Pagès Ramon, Anna no http://hdl.handle.net/2117/18457 Title: NiTi splat features during vacuum thermal spraying onto several substrates Authors: Isalgue Buxeda, Antonio; Cinca, Nuria; Fernández, Javier; Sampath, Sanjay Thu, 21 Mar 2013 17:38:12 GMT http://hdl.handle.net/2117/18457 2013-03-21T17:38:12Z Isalgue Buxeda, Antonio; Cinca, Nuria; Fernández, Javier; Sampath, Sanjay no http://hdl.handle.net/2117/17796 Title: Recerca sobre criteris de planificació, programació, disseny arquitectònic i factors de sostenibilitat dels centres d’allotjament d’empreses de referència Authors: Fuertes Pérez, Pere; Mària Serrano, Magdalena; Sauquet Llonch, Roger Joan; Callís Freixas, Eduard; Marcos Padrós, Carlos; Puigjaner Barberà, Anna; Cuchí Burgos, Alberto Abstract: Recerca sobre criteris de planificació, programació, disseny arquitectònic i factors de sostenibilitat dels centres d’allotjament d’empreses de referència: tres casos a estudi: Barcelona Activa–Glòries, Procornellà, Tecnocampus Mataró–Maresme. Fri, 15 Feb 2013 15:04:49 GMT http://hdl.handle.net/2117/17796 2013-02-15T15:04:49Z Fuertes Pérez, Pere; Mària Serrano, Magdalena; Sauquet Llonch, Roger Joan; Callís Freixas, Eduard; Marcos Padrós, Carlos; Puigjaner Barberà, Anna; Cuchí Burgos, Alberto no Recerca sobre criteris de planificació, programació, disseny arquitectònic i factors de sostenibilitat dels centres d’allotjament d’empreses de referència: tres casos a estudi: Barcelona Activa–Glòries, Procornellà, Tecnocampus Mataró–Maresme. http://hdl.handle.net/2117/17078 Title: Campus Urbano International Competition Università Commerciale Luigi Bocconi. Milano Authors: Mària Serrano, Magdalena; Musquera Felip, Sílvia; Garrido Torres, Pablo; Coch Roura, Helena Editor: Università Commerciale Luigi Bocconi Tue, 04 Dec 2012 15:29:07 GMT http://hdl.handle.net/2117/17078 2012-12-04T15:29:07Z Mària Serrano, Magdalena; Musquera Felip, Sílvia; Garrido Torres, Pablo; Coch Roura, Helena no http://hdl.handle.net/2117/16515 Title: How environmental and energy issues shape the cities : a case-study in Barcelona, Spain Authors: Giovagnorio, Ilaria; Currell, Alessandra; Chivi, Giovanni Marco; Coch Roura, Helena Tue, 18 Sep 2012 15:10:32 GMT http://hdl.handle.net/2117/16515 2012-09-18T15:10:32Z Giovagnorio, Ilaria; Currell, Alessandra; Chivi, Giovanni Marco; Coch Roura, Helena no http://hdl.handle.net/2117/16449 Title: Lightweight ventilated facade prototype : acoustic performance evaluation when the ventilation surface of the air chamber varies Authors: Niampira Daza, Andrea; Zamora i Mestre, Joan-Lluís Fri, 07 Sep 2012 06:57:55 GMT http://hdl.handle.net/2117/16449 2012-09-07T06:57:55Z Niampira Daza, Andrea; Zamora i Mestre, Joan-Lluís no http://hdl.handle.net/2117/16448 Title: Acoustic Performance to Lightweight Ventilated Facade Prototypes Developed, Varying the External Cladding and the Opening to the Air Cavity Authors: Niampira Daza, Andrea; Zamora i Mestre, Joan-Lluís Fri, 07 Sep 2012 06:39:52 GMT http://hdl.handle.net/2117/16448 2012-09-07T06:39:52Z Niampira Daza, Andrea; Zamora i Mestre, Joan-Lluís no http://hdl.handle.net/2117/16419 Title: Prototipo de muro cortina FB720 : diseño con Análisis de Ciclo de Vida Authors: Wadel Raina, Gerardo Fabian; Zamora i Mestre, Joan-Lluís; Alonso Pujol, Pol; Garrido Torres, Pablo Tue, 04 Sep 2012 08:13:55 GMT http://hdl.handle.net/2117/16419 2012-09-04T08:13:55Z Wadel Raina, Gerardo Fabian; Zamora i Mestre, Joan-Lluís; Alonso Pujol, Pol; Garrido Torres, Pablo no http://hdl.handle.net/2117/13436 Title: El futuro del hábitat: repensando la habitabilidad desde la sostenibilidad. El caso español Authors: Arcas Abella, Joaquim; Pagès Ramon, Anna; Casals Tres, Marina Abstract: La capacidad de nuestras sociedades de alcanzar y mantener en el tiempo unas condiciones habitacionales coherentes con el derecho a un hábitat digno, está inevitablemente vinculada a la integración del reto de la sostenibilidad a los mecanismos de generación de nuestras viviendas, barrios y ciudades, pues depende directamente de los recursos disponibles y de la capacidad de emisión de residuos. En base a este vínculo, se propone un despliegue del concepto de edifi cación sostenible, mediante la transposición de la defi nición de desarrollo sostenible formulada por el informe Bruntland, que permite establecer los eslabones que vinculan la satisfacción de necesidades humanas con el uso de recursos, revelando que la edifi cación sostenible debe abordar el cierre de los ciclos materiales en la consecución de su objetivo principal: dotar de habitabilidad. Bajo este enfoque, se analiza el concepto actual de habitabilidad en relación con el impacto ambiental, y argumenta la importancia de redefinirla como una demanda social de disponibilidad de las condiciones precisas para satisfacer las necesidades socialmente reconocidas; una nueva concepción de la habitabilidad que obliga a exceder el ámbito doméstico para abarcar la escala urbana, y que deviene variable para dar respuesta a las diferentes demandas sociales presentes hoy en día. // The ability of our societies to reach and maintain housing conditions consistent with the right to decent habitat is inevitably related to the integration of the sustainability challenge into the mechanisms for housing, neighborhood and city generation, since it directly depends on both available resources and the production of waste. Based on this relation, the sustainable building concept is thoroughly explained through the transposition of the sustainable development definition proposed by the Bruntland report, which allows the linkage of human needs satisfaction with the use of resources. In this way, sustainable housing should address the last phase of material cycles in order to reach its main goal: provide habitability. Under this perspective, this paper analyzes the current concept of habitability in relation to the environmental impact and discusses the importance of redefi ning it as a social demand for the precise conditions to meet socially recognized needs. This new conception of habitability transcends the domestic domain to reach out urban spheres, thus generating variables to satisfy today’s social demands. Wed, 05 Oct 2011 14:06:35 GMT http://hdl.handle.net/2117/13436 2011-10-05T14:06:35Z Arcas Abella, Joaquim; Pagès Ramon, Anna; Casals Tres, Marina no La capacidad de nuestras sociedades de alcanzar y mantener en el tiempo unas condiciones habitacionales coherentes con el derecho a un hábitat digno, está inevitablemente vinculada a la integración del reto de la sostenibilidad a los mecanismos de generación de nuestras viviendas, barrios y ciudades, pues depende directamente de los recursos disponibles y de la capacidad de emisión de residuos. En base a este vínculo, se propone un despliegue del concepto de edifi cación sostenible, mediante la transposición de la defi nición de desarrollo sostenible formulada por el informe Bruntland, que permite establecer los eslabones que vinculan la satisfacción de necesidades humanas con el uso de recursos, revelando que la edifi cación sostenible debe abordar el cierre de los ciclos materiales en la consecución de su objetivo principal: dotar de habitabilidad. Bajo este enfoque, se analiza el concepto actual de habitabilidad en relación con el impacto ambiental, y argumenta la importancia de redefinirla como una demanda social de disponibilidad de las condiciones precisas para satisfacer las necesidades socialmente reconocidas; una nueva concepción de la habitabilidad que obliga a exceder el ámbito doméstico para abarcar la escala urbana, y que deviene variable para dar respuesta a las diferentes demandas sociales presentes hoy en día. // The ability of our societies to reach and maintain housing conditions consistent with the right to decent habitat is inevitably related to the integration of the sustainability challenge into the mechanisms for housing, neighborhood and city generation, since it directly depends on both available resources and the production of waste. Based on this relation, the sustainable building concept is thoroughly explained through the transposition of the sustainable development definition proposed by the Bruntland report, which allows the linkage of human needs satisfaction with the use of resources. In this way, sustainable housing should address the last phase of material cycles in order to reach its main goal: provide habitability. Under this perspective, this paper analyzes the current concept of habitability in relation to the environmental impact and discusses the importance of redefi ning it as a social demand for the precise conditions to meet socially recognized needs. This new conception of habitability transcends the domestic domain to reach out urban spheres, thus generating variables to satisfy today’s social demands.