http://www.recercat.cat:80/handle/2072/2054 www.udg.edu Tue, 21 May 2013 21:19:49 GMT 2013-05-21T21:19:49Z http://www.recercat.cat:80/bitstream/id/34049/ http://www.recercat.cat:80/handle/2072/2054 http://www.recercat.cat:80/handle/2072/211219 La percepción del riesgo de inundación: experiencias de aprendizaje en la costa brava Saurí Pujol, David; Ribas Palom, Anna; Lara San Martín, Alejandro; Pavón, David Taking as an example three study cases in the Costa Brava area, this paper examines through surveys and interviews the perception of floods among residents living in hazardous areas. perception is then related to vulnerability, flood management, and citizens preferences regarding alternatives to curb flood losses in the future. The study concludes that flood awareness and the willingness to take actions regarding this hazard is clearly related to the degree of social involvement with the affairs of the local community; Este artículo, basándose en los casos de tres municipios de la Costa Brava, reúne los resultados preliminares de un proyecto destinado a aunar en la percepción que sus residentes tienen del riesgo de inundación en relación a aspectos como el nivel de vulnerabilidad frente a las inundaciones, la evaluación de la gestión que actualmente existe y las preferencias ciudadanas respecto a las medidas de gestión a implementar para aumentar la capacidad de resiliencia a las mismas. El estudio, elaborado a partir de encuestas realizadas a residentes en los espacios inundables de estos tres municipios, constata la influencia que tienen factores como el grado de implicación social en los asuntos públicos locales a la hora de optar por distintas medidas de gestión del riesgo http://www.recercat.cat:80/handle/2072/211219 http://www.recercat.cat:80/handle/2072/211218 [2+2+2] Cycloaddition Reactions of Macrocyclic Systems Catalyzed by Transition Metals. A Review Pla-Quintana, Anna; Roglans i Ribas, Anna Polyalkyne and enediyne azamacrocycles are prepared from arenesulfonamides and various alkyne and alkene derivatives either under basic or neutral conditions. The new family of macrocyclic substrates is tested in the [2+2+2] cycloaddition reaction. Several catalysts are used for the cycloisomerization reaction, and their enantioinduction is evaluated as appropriate. The effect of the structural features of the macrocycles, namely the ring size, substituents in precise positions and the number and type of unsaturations, on the [2+2+2] cycloaddition reaction has also been studied http://www.recercat.cat:80/handle/2072/211218 http://www.recercat.cat:80/handle/2072/211220 Propuesta para incorporar evaluación y pruebas de usabilidad dentro de un proceso de desarrollo de software Florian Gaviria, Beatriz Eugenia; Solarte, Oswaldo; Reyes, Javier M. Usability is critical to consider an interactive software system successful. Usability testing and evaluation during product development have gained wide acceptance as a strategy to improve product quality. Early introduction of usability perspectives in a product is very important in order to provide a clear visibility of the quality aspects not only for the developers, but also for the testing users as well. However, usability evaluation and testing are not commonly taken into consideration as an essential element of the software development process. Then, this paper exposes a proposal to introduce usability evaluation and testing within a software development through reuse of software artifacts. Additionally, it suggests the introduction of an auditor within the classification of actors for usability tests. It also proposes an improvement of checklists used for heuristics evaluation, adding quantitative and qualitative aspects to them; La usabilidad es crítica para el éxito de los sistemas de software interactivos. Las pruebas y evaluaciones de usabilidad durante el desarrollo del producto han ganado amplia aceptación como estrategia para mejorar la calidad del producto. La introducción temprana de las perspectivas de usabilidad en un producto es muy importante para brindar una clara visibilidad de aspectos de calidad, tanto para los desarrolladores como los usuarios de pruebas. Sin embargo, la evaluación y pruebas de usabilidad no es común que se tomen en cuenta como elementos indispensables del proceso de desarrollo de software. Este artículo expone una propuesta para introducir la evaluación y pruebas de usabilidad dentro de un desarrollo de software, basándose en la reutilización de artefactos de software. Adicionalmente, propone la introducción de un auditor dentro de la clasificación de actores para las pruebas de usabilidad y una mejora de las listas de chequeo utilizadas para evaluación heurística, agregándoles aspectos cuantitativos y cualitativos http://www.recercat.cat:80/handle/2072/211220 http://www.recercat.cat:80/handle/2072/211145 Information-theoretical derivation of an extended thermodynamical description of radiative systems Fort, Joaquim; Llebot, Josep Enric A radiative equation of the Cattaneo–Vernotte type is derived from information theory and the radiative transfer equation. The equation thus derived is a radiative analog of the equation that is used for the description of hyperbolic heat conduction. It is shown, without recourse to any phenomenological assumption, that radiative transfer may be included in a natural way in the framework of extendedirreversible thermodynamics http://www.recercat.cat:80/handle/2072/211145 http://www.recercat.cat:80/handle/2072/211147 Metallic and nonmetallic shine in luster: An elastic ion backscattering study Pradell, Trinitat; Climent-Font, A.; Molera, J.; Zucchiatti, A.; Ynsa, M.D.; Roura Grabulosa, Pere; Crespo, D. Luster is a metal glass nanocomposite layer first produced in the Middle East in early Islamic times ( 9th AD) made of metal copper or silver nanoparticles embedded in a silica-based glassy matrix. These nanoparticles are produced by ion exchange between Cu+ and Ag+ and alkaline ions from the glassy matrix and further growth in a reducing atmosphere. The most striking property of luster is its capability of reflecting light like a continuous metal layer and it was unexpectedly found to be linked to one single production parameter: the presence of lead in the glassy matrix composition. The purpose of this article is to describe the characteristics and differences of the nanoparticle layers developed on lead rich and lead free glasses. Copper luster layers obtained using the ancient recipes and methods are analyzed by means of elastic ion backscattering spectroscopy associated with other analytical techniques. The depth profile of the different elements is determined, showing that the luster layer formed in lead rich glasses is 5–6 times thinner and 3–4 times Cu richer. Therefore, the metal nanoparticles are more densely packed in the layer and this fact is related to its higher reflectivity. It is shown that lead influences the structure of the metal nanoparticle layer through the change of the precipitation kinetics http://www.recercat.cat:80/handle/2072/211147 http://www.recercat.cat:80/handle/2072/211146 Variational principles for nonlinear dynamical systems Méndez López, Vicenç A variational method for Hamiltonian systems is analyzed. Two different variationalcharacterization for the frequency of nonlinear oscillations is also suppliedfor non-Hamiltonian systems http://www.recercat.cat:80/handle/2072/211146 http://www.recercat.cat:80/handle/2072/211143 Intramolecular basis set superposition error effects on the planarity of benzene and other aromatic molecules: A solution to the problem Asturiol Bofill, David; Duran i Portas, Miquel; Salvador Sedano, Pedro Recently, the surprising result that ab initio calculations on benzene and other planar arenes at correlated MP2, MP3, configuration interaction with singles and doubles (CISD), and coupled cluster with singles and doubles levels of theory using standard Pople’s basis sets yield nonplanar minima has been reported. The planar optimized structures turn out to be transition states presenting one or more large imaginary frequencies, whereas single-determinant-based methods lead to the expected planar minima and no imaginary frequencies. It has been suggested that such anomalous behavior can be originated by two-electron basis set incompleteness error. In this work, we show that the reported pitfalls can be interpreted in terms of intramolecular basis set superposition error (BSSE) effects, mostly between the C–H moieties constituting the arenes. We have carried out counterpoise-corrected optimizations and frequency calculations at the Hartree–Fock, B3LYP, MP2, and CISD levels of theory with several basis sets for a number of arenes. In all cases, correcting for intramolecular BSSE fixes the anomalous behavior of the correlated methods, whereas no significant differences are observed in the single-determinant case. Consequently, all systems studied are planar at all levels of theory. The effect of different intramolecular fragment definitions and the particular case of charged species, namely, cyclopentadienyl and indenyl anions, respectively, are also discussed http://www.recercat.cat:80/handle/2072/211143 http://www.recercat.cat:80/handle/2072/211144 Quantum dynamics study of fulvene double bond photoisomerization: The role of intramolecular vibrational energy redistribution and excitation energy Blancafort San José, Lluís; Gatti, Fabien; Meyer, Hans-Dieter The double bond photoisomerization of fulvene has been studied with quantum dynamics calculations using the multi-configuration time-dependent Hartree method. Fulvene is a test case to develop optical control strategies based on the knowledge of the excited state decay mechanism. The decay takes place on a time scale of several hundred femtoseconds, and the potential energy surface is centered around a conical intersection seam between the ground and excited state. The competition between unreactive decay and photoisomerization depends on the region of the seam accessed during the decay. The dynamics are carried out on a four-dimensional model surface, parametrized from complete active space self-consistent field calculations, that captures the main features of the seam (energy and locus of the seam and associated branching space vectors). Wave packet propagations initiated by single laser pulses of 5–25 fs duration and 1.85–4 eV excitation energy show the principal characteristics of the first 150 fs of the photodynamics. Initially, the excitation energy is transferred to a bond stretching mode that leads the wave packet to the seam, inducing the regeneration of the reactant. The photoisomerization starts after the vibrational energy has flowed from the bond stretching to the torsional mode. In our propagations, intramolecular energy redistribution (IVR) is accelerated for higher excess energies along the bond stretch mode. Thus, the competition between unreactive decay and isomerization depends on the rate of IVR between the bond stretch and torsion coordinates, which in turn depends on the excitation energy. These results set the ground for the development of future optical control strategi http://www.recercat.cat:80/handle/2072/211144 http://www.recercat.cat:80/handle/2072/211142 Evaluation of the nonlinear optical properties for an expanded porphyrin Hückel-Möbius aromaticity switch Torrent Sucarrat, Miquel; Anglada, Josep M.; Luis Luis, Josep Maria The conformational flexibility of the expanded porphyrins allows them to achieve different topologies with distinct aromaticities and nonlinear optical properties (NLOP). For instance, it is possible to switch between Möbius and Hückel topologies applying only small changes in the external conditions or in the structure of the ring. In this work, we evaluate the electronic and vibrational contributions to static and dynamic NLOP of the Hückel and Möbius conformers of A,D-di-pbenzi[28] hexaphyrin (1.1.1.1.1.1) synthesized by Latos-Gra˙zy´nski and co-workers [Angew. Chem., Int. Ed. 46, 7869 (2007)]. Calculations are performed at the HF, M052X, and CAM-B3LYP levels using the 6-31G, 6-311G(d), and 6-31+G(d) basis sets. Our results conclude that M052X/6-31G and CAM-B3LYP/6-31G methods provide a correct qualitative description of the electronic and vibrational contributions for the NLOP of expanded porphyrins. The studied systems show high NLOP with large differences between the Möbius and Hückel conformations (around 1 × 106 a.u. for γ¯ ). The obtained results indicate that the expanded porphyrins are promising systems to manufacture Hückel-to-Möbius topological switches http://www.recercat.cat:80/handle/2072/211142 http://www.recercat.cat:80/handle/2072/211141 N-dimensional dynamical systems exploiting instabilities in full Rius, J.; Figueras, M.; Herrero, R.; Farjas Silva, Jordi; Pi i Vila, Francesc; Orriols Tubella, Gaspar We report experimental and numerical results showing how certain N-dimensional dynamical systems are able to exhibit complex time evolutions based on the nonlinear combination of N-1 oscillation modes. The experiments have been done with a family of thermo-optical systems of effective dynamical dimension varying from 1 to 6. The corresponding mathematical model is an N-dimensional vector field based on a scalar-valued nonlinear function of a single variable that is a linear combination of all the dynamic variables. We show how the complex evolutions appear associated with the occurrence of successive Hopf bifurcations in a saddle-node pair of fixed points up to exhaust their instability capabilities in N dimensions. For this reason the observed phenomenon is denoted as the full instability behavior of the dynamical system. The process through which the attractor responsible for the observed time evolution is formed may be rather complex and difficult to characterize. Nevertheless, the well-organized structure of the time signals suggests some generic mechanism of nonlinear mode mixing that we associate with the cluster of invariant sets emerging from the pair of fixed points and with the influence of the neighboring saddle sets on the flow nearby the attractor. The generation of invariant tori is likely during the full instability development and the global process may be considered as a generalized Landau scenario for the emergence of irregular and complex behavior through the nonlinear superposition of oscillatory motions http://www.recercat.cat:80/handle/2072/211141 http://www.recercat.cat:80/handle/2072/211011 Fish passage assessment at the most downstream barrier of the Ebro River (NE Iberian Peninsula) Aparicio, Enric; Pintor, Cristina; Duran, Concha; Carmona-Catot, Gerard Fish passage at artificial barriers is necessary for the conservation of healthy fish stocks. The first barrier that migratory fish encounter when ascending the Ebro River is the Xerta Weir, where a pool-type fishway was constructed in 2008. From 2007 to 2010, boat electrofishing surveys were conducted in the Ebro River downstream of the Xerta Weir to assess the potential pool of species that could use the fishway. Nine native and 12 exotic species were captured, the latter comprising 62 % of the relative abundance and 70 % of the biomass. A combination of video recording, electrofishing and trapping was used to assess the effectiveness of the fishway in facilitating the passage of fish. Eight species were detected using the fishway, of which five were native (Liza ramada, Anguilla anguilla, Barbus graellsii, Gobio lozanoi and Salaria fluviatilis) and three exotic (Alburnus alburnus, Cyprinus carpio and Rutilus rutilus). Only L. ramada used the fishway in substantial numbers. The rate of fish passage was the highest from June to August and decreased afterwards. The effectiveness of the fishway might be lowered by areas of turbulence within the fishway and by distraction flows from a nearby hydropower station; El paso de peces a través de barreras artificiales es necesario para la conservación en buen estado de las poblaciones de peces. La primera barrera que los peces migratorios encuentran ascendiendo el Río Ebro es el Azud de Xerta, donde en 2008 se construyó una escala de peces del tipo de estanques sucesivos. Para determinar el conjunto de especies que potencialmente podrían usar la escala se llevaron a cabo muestreos mediante pesca eléctrica desde embarcación aguas abajo del azud. Nueve especies nativas y 12 exóticas fueron capturadas, representando estas últimas el 62 % de la abundancia relativa y el 70 % de la biomasa. Se usó una combinación de grabaciones de video, pesca eléctrica y trampeo para evaluar la efectividad de la escala de peces. Ocho especies fueron detectadas en la escala, de las cuales cinco eran nativas (Liza ramada, Anguilla anguilla, Barbus graellsii, Gobio lozanoi y Salaria fluviatilis) y tres exóticas (Alburnus alburnus, Cyprinus carpio y Rutilus rutilus). Sólo L. ramada usó la escala en un número destacado. La tasa de paso de peces fue más alta de Junio a Agosto y descendió posteriormente. La efectividad de la escala puede estar limitada por áreas de turbulencia dentro de la escala y caudales de distracción desde una central hidroeléctrica cercana http://www.recercat.cat:80/handle/2072/211011 http://www.recercat.cat:80/handle/2072/211010 Feeding of nauplii, copepodites and adults of Calanipeda aquaedulcis (Calanoida) in Mediterranean salt marshes Brucet Balmaña, Sandra; Compte Ciurana, Jordi; Boix Masafret, Dani; López Flores, Rocío; Quintana Pou, Xavier Feeding of the different developmental stages of Calanipeda aquaedulcis on natural particles (bacterio-, phyto- and microzooplankton) was measured in a Mediterranean salt marsh (Empordà wetlands, NE Iberian Peninsula). Bottle incubations were performed in the field both in autumn and spring. The results showed differences in the diet of the different developmental stages due to both prey type and size. In general, the size of the ingested prey increased with increasing size of the C. aquaedulcis stage. While C. aquaedulcis adults had high ingestion rates and selection coefficients for large prey (micro- and nanoplankton), nauplii preferentially consumed smaller prey items (picoplankton). Copepodites showed the widest prey size range, including pico-, nano- and microplankton. Nevertheless, the lower size limit for particle capture was similar for all stages, i.e. between 1.7 and 2.1 μm. Omnivory was observed in all stages of C. aquaedulcis. Heterotrophic prey (picoplankton, dinoflagellates and ciliates) were the most ingested items. The ability to partition the available food among the different developmental stages could represent an advantage in times of ood scarcity because it may reduce intraspecific competition. This may explain how C. aquaedulcis is able to predominate in the zooplankton community for several weeks during spring and summer ven in situations of low food availability http://www.recercat.cat:80/handle/2072/211010 http://www.recercat.cat:80/handle/2072/210953 HGI, l' herbari de la Universitat de Girona Font Garcia, Joan; Campos i Llach, Miquel; Vilar Sais, Lluís; Polo Albertí, Lluís Descripció de l'herbari de la Universitat de Girona, fundat l'any 1976 pel Dr. Lluís Polo http://www.recercat.cat:80/handle/2072/210953 http://www.recercat.cat:80/handle/2072/210949 Les dunes litorals, un paisatge singular en regressió Vilar Sais, Lluís; Font Garcia, Joan; Polo Albertí, Lluís Escrit que vol donar a conèixer el medi dunar litoral amb l’objectiu de recomanar la seva protecció urgent http://www.recercat.cat:80/handle/2072/210949 http://www.recercat.cat:80/handle/2072/210950 L' embassament de Boadella Colomer, Jordi; Serra Putellas, Teresa; Casamitjana, Xavier Article que descriu el règim hidrològic, les característiques fisicoquímiques de l'aigua i les partícules en suspensió a l' aigua de l' embassament de Boadella (Alt Empordà) http://www.recercat.cat:80/handle/2072/210950 http://www.recercat.cat:80/handle/2072/210951 La flora i la vegetació Polo Albertí, Lluís Descripció de la flora i vegetació de les Gavarres http://www.recercat.cat:80/handle/2072/210951 http://www.recercat.cat:80/handle/2072/210952 Un gran mapa de 1888 Tarrés Turon, Josep Escrit que parla d’un mapa del Montseny, les Guilleries i el Collsacabra, realitzat pel tinent topògraf de l’ exèrcit, Juli Serra, l’any 1888 http://www.recercat.cat:80/handle/2072/210952 http://www.recercat.cat:80/handle/2072/210945 Distribution Patterns of Soil Properties in a Rural Mediterranean Area in Northeastern Spain Pardini, Giovanni; Gispert i Negrell, Maria Assumpta; Dunjó Denti, Gemma Soil properties on the Cap de Creus Peninsula, NE Spain depend primarily on scarce agricultural practices and early abandonment. In the study area, 90% of which is mainly covered by Cistus shrubs, 8 environments representing variations in land use/land cover and soil properties at different depths were identified. In each environment variously vegetated areas were selected and sampled. The soils, collected at different depths, were classified as Lithic Xerorthents according to the United States Department of Agriculture system of soil classification (USDA-NRCS 1975). Differences in soil properties were largely found according to the evolution of the plant canopy and the land use history. To identify underlying patterns in soil properties related to environmental evolution, factor analysis was performed and factor scores were used to determine how the factor patterns varied between soil variables, soil depths and selected environments. The three-factor model always accounted for 80% of the total variation in the data at the different soil depths. Organic matter was the more relevant soil property at 0–2 cm depth, whereas active minerals (silt and clay) were found to be the most relevant soil parameters controlling soil dynamics at the other depths investigated. Results showed that vineyards and olive tree soils are poorly developed and present worse conditions for mineral and organic compounds. Analysis of factor scores allowed independent assessment of soils, depth and plant cover and demonstrated that soils present the best physico-chemical characteristics under Erica arborea and meadows. In contrast, soils under Cistus monspeliensis were less nutrient rich and less well structured http://www.recercat.cat:80/handle/2072/210945 http://www.recercat.cat:80/handle/2072/210946 Producción y Productividad Agrícolas en la Isla de Mallorca, 1590-1860 Jover i Avellà, Gabriel; Manera, Carles This paper proposes a detailed measurement of the agricultural development of the island of Majorca from the late sixteenth century to the midnineteenth century, with an emphasis on the products which made up the bulk of the island’s agricultural production. The authors have organized most of the existing databases in the island’s archives and have also incorporated quantitative and qualitative material from their own research and that of other colleagues. Due to their quality and regularity, the data are among the richest known for pre-industrial Europe. These sources lead to some conclusions which link with recent debates in European economic history concerning the calculation of economic growth in economies for periods before statistics were kept. The text presents a methodological analysis covering almost 80 per cent of agricultural production of the island of Majorca and leaves conclusions to be supplemented by further studies of the manufacturing and service sectors http://www.recercat.cat:80/handle/2072/210946 http://www.recercat.cat:80/handle/2072/210944 Transformation of a Rural Landscape in the Eastern Pyrenees Between 1953 and 2000 Roura i Pascual, Núria; Pons Ferran, Pere; Etienne, Michel; Lambert, Bernard In the mid-20th century, the southern parts of the Madres and Mont Coronat massif (Eastern Pyrenees, France) were characterized by a Mediterranean landscape shaped by human activity. Long-term use of these mountains for crops, livestock, and forestry led to an increase in grassland areas at the expense of forest. However, socioeconomic transformation (abandonment of agriculture and a decrease in the rural population) in recent decades has caused profound changes in this massif. Interpretation of aerial photographs (1953, 1969, 1988, and 2000) made it possible to detect and analyze the changes produced in the study area (6787 ha) during this period. In 1953 most of the massif landscape consisted of grasslands (38%) and open forests (18%), with some areas of dense forest (15%). By 2000, dense forest cover had doubled in size (31%), and grassland had decreased considerably (by 73% of the initial area). Since 1953, the study area has become more homogeneous, with a few local exceptions. The results of this study suggest that socioeconomic factors might be the main cause of landscape transformations in this period of approximately 50 years. http://www.recercat.cat:80/handle/2072/210944 http://www.recercat.cat:80/handle/2072/210947 Comunitat d' algues bentòniques al litoral català Polo Albertí, Lluís; Rodríguez Prieto, Concepció Article que descriu les algues bentòniques del litoral català http://www.recercat.cat:80/handle/2072/210947 http://www.recercat.cat:80/handle/2072/210948 La Devesa : reconeixement i diagnòstic Leyra Alcaraz, Emilio; Polo Albertí, Lluís Estudi forestal de la plataneda de la Devesa de Girona amb l'objectiu d'extreure unes conclusions i propostes forestals convenients i beneficioses per a la salvaguarda de l'arbreda http://www.recercat.cat:80/handle/2072/210948 http://www.recercat.cat:80/handle/2072/210940 El projecte Hàbitat a les comarques de Girona Vilar Sais, Lluís; Font Garcia, Joan Descripció del Projecte Hàbitat, consistent en inventariar els hàbitats existents a les comarques de Girona http://www.recercat.cat:80/handle/2072/210940 http://www.recercat.cat:80/handle/2072/210942 Els últims prats de dall a la terra baixa gironina Font Garcia, Joan; Vilar Sais, Lluís; Gesti Perich, Josep; Viñas i Teixidor, Xavier Article on es descriu la distribució geogràfica i les característiques del poblament vegetal dels prats de dall de les comarques gironines http://www.recercat.cat:80/handle/2072/210942 http://www.recercat.cat:80/handle/2072/210943 Vegetació dels aiguamolls Polo Albertí, Lluís Aquest escrit es refereix a la vegetació dels Aiguamolls del Baix Empordà, concretament als aiguamolls de la platja de Pals, sense entrar en detalls d'altres zones humides situades mes lluny de la línia de costa. Els indrets més significatius són el Ter Vell, la Platera (T. M. de Torroella de Montgrí), la Fonollera i les Basses d'en Coll (T. M. de Pals), que presenten diferencies apreciables en el seu poblament vegetal http://www.recercat.cat:80/handle/2072/210943 http://www.recercat.cat:80/handle/2072/210941 Les segones residències: anàlisi específic per a la Costa Brava Saló Mayolas, Albert Les segones residencies han estat un dels veritables motors del creixement del nombre d'habitatges a la demarcació de Girona, especialment durant la segona meitat del segle XX. L'explotació i especialització de la zona Costa Brava és i ha estat un dels fenòmens mes importants en el panorama constructor no només de la província sinó a nivell de Catalunya. En aquest estudi s'observa que aquest tipus d'habitatge a la Costa Brava ha sofert canvis en l'última dècada (1992-2002). I de fet, el creixement d’aquesta modalitat d'habitatges s'ha localitzat en nuclis específics http://www.recercat.cat:80/handle/2072/210941 http://www.recercat.cat:80/handle/2072/210938 De la industrialització de les comarques de Girona al vapor Burés Tarres Turon, Josep Aquest article vol mostrar que la industrialització de Catalunya també va ser important a les comarques properes a la ciutat de Girona, especialment a la vall d’Anglès, ja que en aquesta població es conserva el vapor Burés, una màquina de vapor del principi del segle XX en molt bon estat. L'article es presenta en un to divulgador amb ànim de provocar anàlisis mes rigoroses dels temes tractats. En aquest sentit, l'apartat de la descripció tècnica del vapor Burés pretén estimular el seu estudi amb mes profunditat. Finalment, es fan un seguit de propostes, des de ben simples fins a mes agosarades, que caldria tenir en compte per avançar en una bona proposta d'ús públic dels elements patrimonials relacionats amb el vapor Burés http://www.recercat.cat:80/handle/2072/210938 http://www.recercat.cat:80/handle/2072/210939 Les plantes exòtiques o al·lòctones : de fora vingueres i ... Font Garcia, Joan; Vilar Sais, Lluís Article que tracte de la introducció i expansió de les plantes al·lòctones o exòtiques al nostre país http://www.recercat.cat:80/handle/2072/210939 http://www.recercat.cat:80/handle/2072/210937 Déficit en la provisión local de servicios públicos y tipologia municipal Fluvià, Modest; Rigall i Torrent, Ricard; Garriga Ripoll, Anna Este trabajo analiza el déficit en la provisión de servicios públicos locales en España, especialmente en su relación con el tamaño de los municipios y con el número de núcleos de población que forman cada municipio, una variable largamente olvidada. El análisis empírico muestra que ambas variables son relevantes. Los resultados se revelan de interés en las discusiones relativas a la consolidación municipal como instrumento para eliminar el déficit de provisión de servicios http://www.recercat.cat:80/handle/2072/210937 http://www.recercat.cat:80/handle/2072/210870 Introducció a l’obra de Bassam Kanaan (catàleg raonat 1960-1987) Kanaan Amat, Maia Recull, identificació i documentació d'aproximadament 130 obres de l'artista sirià Bassam Kanaan entre 1960 i 1987. El treball inclou un apunt biogràfic de l'artista que, com diu la seva autora, va evitar conscientment formar part del sistema, cosa que ha complicat la tasca de rescatar de l'oblit informacions sobre Kanaan http://www.recercat.cat:80/handle/2072/210870