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La recerca entorn dels manuscrits litúrgics amb música és dinàmica, ja que els arxius, amb el temps, van posant en ordre els fons que conserven i en van incorporant de nous. En el present article es mostra el fons actual de fragments de manuscrits musicals litúrgics conservats a l'Arxiu Diocesà de Barcelona i se'n fa un inventari descriptiu complet en què, a més d'anotar les característiques de cada fragment, se'n dona el contingut litúrgic que conté per facilitar recerques posteriors., The research on liturgical manuscripts containing music is a dynamic matter since, with the passing of time, archives go about putting their holdings in order and acquiring new accessions. This paper presents the holdings of fragments of liturgical music manuscripts currently conserved at the Diocesan Archive of Barcelona. Likewise, it draws up a completedescriptive inventory of these holdings and, in addition to pointing out the characteristics of each fragment, it describes their liturgical content with a view to facilitating future research.

La Biblioteca Nacional de França conserva diversos manuscrits litúrgics medievals catalans que són prou coneguts entre els investigadors. Ara hi podem afegir uns fragments de breviari, de la primera meitat del segle XII, curiosament enquadernats al còdex miscel·lani Supplément turc 983, que conté diversos tractats àrabs. Els dos folis en qüestió, desconeguts fins ara, degueren ser utilitzats com a cobertes d'alguns dels quaderns que després es van enquadernar al volum factici. En aquest estudi es presenta el contingut litúrgic dels dos folis i se n'estudia la notació musical que conté, que pertany a la darrera fase de la notació musical catalana in campo aperto., The Bibliothèque Nationale de France conserves various Catalan medieval liturgical manuscripts which are well known among researchers. Now we can add some breviary fragments, from the first half of the 12th century, curiously bound in the miscellany codex Supplément turc 983, which contains various Arabic treatises. The two folios in question, which were hitherto unknown, must have been used as covers for some of the signatures that were subsequently bound in the factitious volume. This paper presents the liturgical content of the two folios and a study of the musical notation which it contains, belonging to the last phase of Catalan musical notation in campo aperto.

Recently there has been a significant proliferation in the use of forecasting techniques, mainly due to the increased availability and power of computation systems and, in particular, to the usage of personal computers. This is also true for power network systems, where energy demand forecasting has been an important field in order to allow generation planning and adaptation. Apart from the quantitative progression, there has also been a change in the type of models proposed and used. In the '70s, the usage of non-linear techniques was generally not popular among scientists and engineers. However, in the last two decades they have become very important techniques in solving complex problems which would be very difficult to tackle otherwise. With the recent emergence of smart grids, new environments have appeared capable of integrating demand, generation, and storage. These employ intelligent and adaptive elements that require more advanced techniques for accurate and precise demand and generation forecasting in order to work optimally. This review discusses the most relevant studies on electric demand prediction over the last 40 years, and presents the different models used as well as the future trends. Additionally, it analyzes the latest studies on demand forecasting in the future environments that emerge from the usage of smart grids.