Model of sources: a proposal for the hierarchy, merging strategy and representation of the information sources in virtual models of historical buildings

Contributed to: Fusion of Cultures: XXXVIII Annual Conference on Computer Applications and Quantitative Methods in Archaeology – CAA2010 (Granada, Spain, Apr 6-9, 2010)

Geometric documentation and reconstruction of the church of the Monastery of San Prudencio (La Rioja, Spain)

[EN] Data contained in this record come from the following accademic activity (from which it is possible to locate additional records related with the Monastery):

Ontologies for representation of folk song metadata

The digital management of collections in museums, archives, libraries and galleries is an increasingly important part of cultural heritage studies. This paper describes a representation for folk song metadata, based on the Web Ontology Language (OWL) implementation of the CIDOC Conceptual Reference Model. The OWL representation facilitates encoding and reasoning over a genre ontology, while the CIDOC model enables a representation of complex spatial containment and proximity relations among geographic regions. It is shown how complex queries of folk song metadata, relying on inference and not only retrieval, can be expressed in OWL and solved using a description logic reasoner.

Virtual Reconstruction of the Ancient State of a Ruined Church

Contributed to: 4th International Conference, EuroMed 2012, Limassol, Cyprus, October 29 – November 3, 2012.

Importancia del proyecto en la documentaci??n geom??trica del patrimonio

[ES] La medida y representaci??n del un elemento patrimonial debe responder a unas necesidades. Ser?? dif??cil plantear un proceso de documentaci??n geom??trica encaminado exclusivamente a conservar la informaci??n sobre su forma y dimensiones, si no son determinadas previamente las caracter??sticas de la informaci??n que se requiere conservar: su cantidad, c??mo se almacenar??, se gestionar??, se reproducir?? y difundir??. Se considera al Proyecto de Documentaci??n Geom??trica como el eje vertebrador de la intervenci??n, entendiendo por tal, el documento que recoge las necesidades y circunstancias que rodean al elemento patrimonial, propone resultados para satisfacerlas, plantea alternativas tecnol??gicas junto a la evaluaci??n de los recursos temporales, instrumentales y econ??micos de cada una de las opciones; y en definitiva supone el dise??o de la intervenci??n para la medida y la representaci??n. En este art??culo se analizan las circunstancias que justifican la redacci??n del proyecto y la transcendencia de la generaci??n de este documento en el proceso de la documentaci??n geom??trica.

Comparación de métodos de propagación de grietas de fatiga

[ES]En este documento se van a evaluar los diferentes métodos que existen para predecir el crecimiento de grieta, suponiendo la iniciación de ésta conocida. Se hará un estudio bibliográfico de los mismos y se implementarán en un archivo Excel. Se obtendrá la representación de la influencia de distintos parámetros en la duración de la pieza bajo fatiga. Se extraerán las conclusiones y las limitaciones de los métodos aplicado.

A uniform phase representation for the harmonic model in speech synthesis applications

Feature-based vocoders, e.g., STRAIGHT, offer a way to manipulate the perceived characteristics of the speech signal in speech transformation and synthesis. For the harmonic model, which provide excellent perceived quality, features for the amplitude parameters already exist (e.g., Line Spectral Frequencies (LSF), Mel-Frequency Cepstral Coefficients (MFCC)). However, because of the wrapping of the phase parameters, phase features are more difficult to design. To randomize the phase of the harmonic model during synthesis, a voicing feature is commonly used, which distinguishes voiced and unvoiced segments. However, voice production allows smooth transitions between voiced/unvoiced states which makes voicing segmentation sometimes tricky to estimate. In this article, two-phase features are suggested to represent the phase of the harmonic model in a uniform way, without voicing decision. The synthesis quality of the resulting vocoder has been evaluated, using subjective listening tests, in the context of resynthesis, pitch scaling, and Hidden Markov Model (HMM)-based synthesis. The experiments show that the suggested signal model is comparable to STRAIGHT or even better in some scenarios. They also reveal some limitations of the harmonic framework itself in the case of high fundamental frequencies.