Search results for "REPRESENTATION"
showing 10 items of 1710 documents
Application of adaptive models for the determination of the thermal behaviour of a photovoltaic panel
2013
The use of reliable forecasting models for the PV temperature is necessary for a more correct evaluation of energy and economic performances. Climatic conditions certainly have a remarkable influence on thermo-electric behaviour of the PV panel but the physical system is too complex for an analytical representation. A neural-network-based approach for solar panel temperature modelling is here presented. The models were trained using a set of data collected from a test facility. Simulation results of the trained neural networks are presented and compared with those obtained with an empirical correlation.
An Encoding in Metaheuristics for the Minimum Communication Spanning Tree Problem
2009
Problem-specific encodings can improve the performance of metaheuristics, such as genetic algorithms or simulated annealing. This paper studies the link-biased (LB) encoding, which is a tree representation, and applies metaheuristics using this encoding to the minimum communication spanning tree (MCST) problem. Given the communication requirements of the nodes, the MCST problem seeks a communication spanning tree with minimum total cost. Optimal solutions for MCST problems are similar to minimum spanning trees (MSTs), and the LB encoding exploits this property by encoding trees similar to MSTs with higher probability. The paper investigates how to systematically design problem-specific enc…
A multiple layered functional data model to support multiple representations and interoperability of GIS
2001
This paper presents a multi-layered functional data model to support multiple representation and information sharing among distributed spatial information systems. The key idea is that a geographical space (foe example an urban space) can be viewed as a set of abstract spatial functionalities on which different application classes can be derived to manipulate objects of the same geographical space and share the same abstract generic functionalities. The object classes define multiple views or representations of a domain. For example in urban management, transportation systems, water supply and sewage systems applications can share generic network functionalities defined by graph treversal o…
A hypothesis for the redevelopment of the Archaeological Park of Agrigento
2023
The project here presented is developed at the Department of Architecture of the University of Palermo. It is an in-progress research project that combines two fields of knowledge: architectural design and architectural survey. These two branches are combined in a functional redevelopment project of the Valley of the Temples in Agrigento, one of the largest and extraordinary archaeological parks in the Mediterranean area. This interdisciplinary research is driven by three fundamental strategic actions: “survey”, “design” and “representation”. The intervention has four fundamental goals. The first goal is the survey - performed with laser scanning and photogrammetric techniques - of the gymn…
The Urban Landscape in the Graphic Representation of the Cathedral of Palermo
2018
This study proposes some reflections on the relationship between the Cathedral of Palermo and the urban portion where it is placed, in relation to the indissoluble connection with the landscape that in the history offered a variety of perceptive suggestions marked by the passage and the coexistence of different cultural and social domination. To this end, the multiscale historical-urban planning analysis puts in place the role that territorial and urban morphology has had over time in relation to the Cathedral of Palermo. In this sense, the relationship between the architectural artefacts, such as the Royal Palace and the Town Hall, and the urban context is studied according to its access r…
The Zisa. Representations of a Highly Desired Monument
2021
The essay analyses iconographic material depicting the Zisa from the early 1800s up to the surveys propaedeutic to its restoration, from the perspective views of engravings and lithographs depicting its urban surroundings, to the ideal reconstructions of diverse restoration proposals and stylistic reworkings. The application of geometric rules uncovers analogies and differences in these diverse representations, proving they are little more than “virtual reconstructions”, in other words, images of a building that may never have had any of the configurations used to represent it over the years. The different readings of the building, from the nineteenth century to its recovery by Caronia, ten…
Tecnologie digitali per la valorizzazione del patrimonio culturale. La rappresentazione di beni non accessibili
2017
Il contributo rientra nel filone delle sperimentazioni di comunicazione multimediale e di ricostruzione virtuale di architetture e frammenti urbani. Il lavoro presenta i risultati di alcune applicazioni digitali che adoperano il linguaggio multimediale per consentire la fruizione virtuale di siti per diverse ragioni non accessibili, per raccontare un percorso reale o concettuale. I casi studio analizzati si configurano quali possibili prodotti strategici di divulgazione e comunicazione per la conoscenza e la comprensione del patrimonio culturale e per la veicolazione di contenuti scientifici. The contribution is part of the study and experimentation of multimedia communication, virtual anal…
Barbara Sokołowska Brukalski. Analisi grafica della Casa a Niegolewskiego Street
2016
Il progetto che si intende analizzare attraverso il ridisegno critico digitale è la casa-studio a Niegolewskiego Street di Barbara Sokołowska del 1927-28, progettata per lei e suo marito, Stanislaw Brukalski, ispirata alle idee del Neoplasticismo, ai dipinti di Mondrian e al lavoro De Stijl. Nei suoi dettagli la casa sembra riprendere quella a Utrecht di G.T. Rietveld del 1924, con un soggiorno molto ampio, uno studio che si affaccia su una doppia altezza e una scala a spirale che collega i due ambienti in un unico spazio definito da piani traslati e volumi puri. The project analyzed in this paper by the critical and digital redrawing is the House on Niegolewskiego Street of 1927-28, design…
Misure dello sguardo. Agrigento e la Valle dei Templi
2013
Agrigento, built on various morphological levels, in which the ancient city is set among the mountains, it was defined by poetical looks of eighteenth-century travellers. Stand out the temples, the regulars constructions, the obelisks and the elements belonging to the landscape of the mind. In the watercolours of travels, the charm of ruin, with its sublime traits, coexists with the dream of an harmonic Akragas, Greek city with an all ideal nature. The imaginative component of the Drawing, and it couldn’t be otherwise, tells about the subjective idea of the beauty through the “objectivity” of the ruins.
Immagini di una città possibile
2014
As it’s well know, the «architectures in the drawer», drawings that are in the archives and have not taken shape are real cultural gauge of their period. We can often find representations of projects in order to city spaces transformations, old town renovation plans and new urban environments. These projects, if realized, would have modified the city offering a new urban images. The digital model, when it’s between History and Representation, it’s the catalyst of the representation; it is the starting point for the construction of new images of ‘possible’ cities which we want. We have produced new images of Olivella quarter in Palermo, placed on the edge of old town (now has gone poor becau…