6,061 research outputs found
Audiomobiles, Sculptures and Conundrums
No full textRoberto Gerhard was a pioneer of electronic music in England creating a number of substantial concert, theatre and radio works from as early as 1954. Gerhard’s electronic music is one of the richest repositories for understanding the development of the composer’s late compositional technique. Apart from the Symphony no.3, ‘Collages’, none of Gerhard’s electronic music is published. This paper will discuss aspects of Gerhard’s electronic music, focusing on Audiomobiles (1958-59) and Sculptures (1963)
A comparative life cycle assessment of luminaires for general lighting for the office – compact fluorescent (CFL) vs Light Emitting Diode (LED) – a case study
No full textThe paper presents a life cycle assessment of two lighting technologies based on compact fluorescent (CFL) and Light Emitting Diode (LED) luminaires for the general lighting of the office. The life cycle assessments are carried out considering all the parts of the luminaire: lamp, housing and ballast (or driver for LED). The environmental impact is evaluated considering the whole life cycle of the devices, from manufacturing (including the extraction of raw materials), to use and disposal. An experimental test was conducted to verify the illuminance produced by the two systems. Alternative end-of-life and electricity production scenarios were assessed and compared in order to evaluate possible variations deriving from these changes. The life cycle assessments show that the LED luminaire allows the environmental impacts to be significantly reduced (reduction of 41-50% of greenhouse gas emission and cumulative energy demand), mainly due to high energy efficiency in the use stage. The present paper makes three original contributions: 1) it presents a life cycle assessment (LCA) of a last generation kind of LED and luminaire built for this technology and compares it with a similar CFL luminaire; 2) it presents one of the first LCAs for lighting luminaires made with International Reference Life Cycle Data System (ILCD) 2011 Midpoint; 3) it shows a comparison evaluated with two functional units: 1 lm per 50,000 h and 1 lux per 50,000
Blocchi termici in laterizio: analisi teorico-sperimentale
No full textLa ricerca valuta la possibilità di incrementare le prestazioni termiche dei blocchi di laterizio
per murature attraverso l’uso di soluzioni innovative concentrandosi su due tecnologie, in
seguito brevettate: una per l’incremento della capacità termica attraverso l’inserimento di
PCM (materiali a cambiamento di fase) nelle cavità; l’altra per la riduzione della trasmittanza
termica attraverso il trattamento delle superfici delle cavità con coating a bassa emissivita
Thermal analysis of the application of PCM and low emissivity coating in hollow bricks
No full textThis paper discusses the possibility of increasing the energy performance of thermal brick through integration with two different technologies: the first is based on the insertion of phase change material (PCM) inside the enclosures of the bricks, while the second involves covering the internal surface of the enclosures with low emissivity coating. PCM was employed to increase the thermal mass while the low emissivity coating reduces the overall heat transfer coefficient value. To demonstrate the effectiveness of the solutions, energy evaluation was carried out on the bricks using both theoretical and experimental analyses. Stationary and dynamic analyses were performed. The investigations were made in accordance with Italian, European, and international standards: theoretical analyses were based on the finite elements method, while the experimental tests were carried out with the heat flow meter method. Finally, a comparison is made between the theoretical and experimental data and the error is estimate
Roberto Gerhard’s Sound Compositions: A Historical-Philological Perspective. Archive, Process, Intent and reenactment
No full textThis research advances the current state of knowledge in the field of early tape music both empirically and methodologically. The purpose of this study is to evaluate the impact that the electronic medium exerted in the musical thinking of Roberto Gerhard, one of the most outspoken, prolific and influential composers in the Spanish diaspora whose musical legacy, for the most part unknown, is a major landmark in the early history of electroacoustic music. Gerhard’s personal tape collection, one of the largest historical archives of its kind reported in the literature, is exceptional for both its antiquity (50+-year-old tapes) and its abundance of production materials. Through the digitisation and analysis of the composer’s tape collection this research argues that the empirical study of audio documents sets out a basis for a broader understanding of textual processes. More specifically, the research demonstrates that the reconstruction of works based on magnetic tape sketches is a powerful method to advance the understanding of early tape music. This research also examines Gerhard’s sound compositions in relation to the post-war context in which they were composed. Finally, this research presents performance documentation that proposes an approach to the electroacoustic music repertoire in which creativity is not at odds with rigor and critical discernment demonstrating that archival study can be closely aligned to the concept of re-enactment
Realizzazione di strutture multistrato contenenti Materiali a Cambiamento di Fase (PCM) per la realizzazione di celle frigorifere
No full textI materiali in passaggio di fase (PCM) conferiscono alle strutture leggere inerzia termica per effetto dell'accumulo di calore latente di fusione. Vengono riportati i dati teorico-sperimentali di valutazioni di risparmio energetico effettuate su celle frigorifere per il trasporto su treno di materiali deperibili dotate di materiali in passaggio di fase applicati all'involucro
Article Thermal Performance of Hollow Clay Brick with Low Emissivity Treatment in Surface Enclosures
No full textwww.mdpi.com/journal/coating
- Valutazione del comportamento energetico-ambientale e delle condizioni di comfort visivo per apparecchi per l’illuminamento di postazioni di lavoro e definizione dei criteri minimi di ecodesign
No full textVengono riportati i risultati di una ricerca scientifica finalizzata allo studio energetico- ambientale, sia metodologico sia sperimentale, di tecnologie impiantistiche caratterizzate da elevato grado di innovazione tecnologica e da prestazioni energetico-ambientali d’eccellenza, al fine di individuare criteri di progettazione eco-compatibile
Filologia editoriale, Roberto Calasso in dialogo con Paola Italia e Francisco Rico
No full textPaola Italia e Francisco Rico intervengono sul libro di Roberto Calasso, presidente e fondatore di Adelphi Edizioni, L'impronta dell'editore, e discutono di problemi di filologia delle forme editoriali, dal punto di vista dell'autore, del lettore e dell'editore.Paola Italia and Francisco Ricos interview Roberto Calasso, Publisher, Writer, and Founder of Adelphi Edizioni, about his book: L'impronta dell'editore, talking about philology, publishing and editing, from the author, the reader and the publisher's point of view
Thermal analysis on a phase change material latent heat storage in a cold room in case of power outage
No full text- …
