1,158 research outputs found
Altre Libertà. Pratiche performative e comportamentali nella poesia visuale degli anni Sessanta e Settanta
No full textIl saggio a più mani (Zanchetti, Colombo, Giuranna, Sem) indaga e legge le esperienze di azione poetica e di performance sviluppate dalle neoavanguardie verbovisuali italiane degli anni Sessanta e Settanta a partire da una riformulazione delle parole in libertà futuriste.
In particolare si mettono in luce le esperienze propriamente performative di poeti e artisti quali Balestrini, Caruso, Costa, Xerra, Sarenco, Niccolai, Oberto, Parmiggiani, Vicinelli e di poeti come Chiari, Marchetti e Mosconi nei loro rapporti con il contesto internazionale di Fluxus. Da non dimenticare anche figure come La Rocca, Vaccari e Patella, anche per la loro produzione filmica.
Il saggio si sofferma poi su alcune figure specifiche: Arrigo Lora-Totino, Adriano Spatola, Eugenio Miccini, Maurizio Nannucci ed Emilio Villa.
L’ultima parte del saggio – Emilio Villa: “par l’art sonore” – è stata scritta da Davide Colombo. Si tratta di un approfondimento sul poeta e critico d’arte Emilio Villa: per Villa l’operazione poetica è un’azione sul verbum che conduce a una nuova e originaria percezione del phonos. Il saggio analizza la sperimentazione linguistica di Villa sia nei testi poetici sia nei testi dedicati agli artisti negli anni Cinquanta e Sessanta. In particolare si analizza come il tema del fonema venga sviluppato fino a sperimentazioni performative di poesia sonora durante gli anni Settanta
Investigation On Motorvehicle Structural Vibrations Caused By Engine Unbalances (1st Part-Handlebar)
No full textMotor vehicle riding comfort is mainly affected by volumetric engine inertial unbalances. Those propagate till the rider passing via engine mounts, main frame and auxiliary sub systems physically in contact with driver. On-road traction vehicle's engines are mainly characterized by transient exercise. Thus, a width frequency range of excitation occurs: from 800rpm(=15Hz) for still standing up to 15000rpm(=250Hz) as cut off condition. Several structural resonances are forced by unbalances spectra exposing driver to amplified vibrations. Aim of the research is to reduce driver vibration exposure acting on modal response of structures physically in contact with driver, as handlebar, footpad and saddle. An experimental methodology able to identify local vibration modes has been developed. Application of methodology on reference vehicle allows to detect if/when/how above components' resonances are excited. Structural modifications have been studied through the use of numerical models. Handlebar innovative multi d.o.f. tuned mass damper has been optimised. In the paper "Investigation on motorvehicle's structural vibrations caused by engine unbalances (2nd part-Footplate)", footplate geometry has been modified in order to minimize nodal displacement of footrest beam binding. All structural modifications have been designed, realized and installed on vehicle. Modal investigations have been executed in order to predict modifications efficacy. ©2009 Society for Experimental Mechanics Inc
Correction to: Size‐Dependent Enforcement, Tax Evasion and Dimensional Trap
No full textThe article “Size‐Dependent Enforcement, Tax Evasion and Dimensional Trap”, written by Raffaella Coppier, Elisabetta Michetti and Luisa Scaccia, was originally published electronically on the publisher’s internet portal on 05 July 2023 without open access. With the author(s)’ decision to opt for Open Choice the copyright of the article changed on 24 February 2024 to © The Author(s) 2024 and the article is forthwith distributed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made
Altre libertà : pratiche performative e comportamentali nella poesia visuale italiana degli anni Sessanta e Settanta
No full textIl saggio a più mani (Zanchetti, Colombo, Giuranna, Sem) indaga e legge le esperienze di azione poetica e di performance sviluppate dalle neoavanguardie verbovisuali italiane degli anni Sessanta e Settanta a partire da una riformulazione delle parole in libertà futuriste.
In particolare si mettono in luce le esperienze propriamente performative di poeti e artisti quali Balestrini, Caruso, Costa, Xerra, Sarenco, Niccolai, Oberto, Parmiggiani, Vicinelli e di poeti come Chiari, Marchetti e Mosconi nei loro rapporti con il contesto internazionale di Fluxus. Da non dimenticare anche figure come La Rocca, Vaccari e Patella, anche per la loro produzione filmica.
Il saggio si sofferma poi su alcune figure specifiche: Arrigo Lora-Totino, Adriano Spatola, Eugenio Miccini, Maurizio Nannucci ed Emilio Villa.
L’ultima parte del saggio – Emilio Villa: “par l’art sonore” – è stata scritta da Davide Colombo. Si tratta di un approfondimento sul poeta e critico d’arte Emilio Villa: per Villa l’operazione poetica è un’azione sul verbum che conduce a una nuova e originaria percezione del phonos. Il saggio analizza la sperimentazione linguistica di Villa sia nei testi poetici sia nei testi dedicati agli artisti negli anni Cinquanta e Sessanta. In particolare si analizza come il tema del fonema venga sviluppato fino a sperimentazioni performative di poesia sonora durante gli anni Settanta.Many word-image experiments in late XXth Century art take their starting point from the historical precedent of the liberation of the poetic words pointed out by Marinetti in his manifesto Wireless Imagination and Words in Freedom (1913). The different practices in Italian visual poetry contributed to the very first development of conceptual art and performance art, going beyond the narrow limits of « sound-poetry » and « action-poetry » in strict sense. The authors of this essay, coordinated by G. Zanchetti, focus on some actions by a small number of artists and poets who played a key role in this field of expression in the Sixties and the Seventies: Martino Oberto, Ketty La Rocca, Franco Vaccari, Luca Patella, Adriano Spatola, Eugenio Miccini and Maurizio Nannucci. Two sections of the article are devoted to the work by Arrigo Lora-Totino as an author, editor and performer and to the inspirational and groundbreaking role of the poet Emilio Villa even in this kind of practices
Investigation On Motorvehicle Structural Vibrations Caused By Engine Unbalances (2nd Part-Footplate)
No full textMotor vehicle riding comfort is mainly affected by volumetric engine inertial unbalances. Those propagate till the rider passing via engine mounts, main frame and auxiliary sub systems physically in contact with driver. On-road traction vehicle's engines are mainly characterized by transient exercise. Thus, a width frequency range of excitation occurs: from 800rpm(=15Hz) for still standing up to 15000rpm(=250Hz) as cut off condition. Several structural resonances are forced by unbalances spectra exposing driver to amplified vibrations. Aim of the research is to reduce driver vibration exposure acting on modal response of structures physically in contact with driver, as handlebar, footpad and saddle. An experimental methodology able to identify local vibration modes has been developed. Application of methodology on reference vehicle allows to detect if/when/how above components' resonances are excited. Structural modifications have been studied through the use of numerical models. In the paper "Investigation on motorvehicle's structural vibrations caused by engine unbalances (1st part-Handlebar)", Handlebar innovative multi d.o.f. tuned mass damper has been optimised. Footpad geometry has been modified in order to minimize nodal displacement of footrest beam binding. All structural modifications have been designed, realized and installed on vehicle. Modal investigations have been executed in order to predict modifications efficacy. ©2009 Society for Experimental Mechanics Inc
SEM-EDS Analysis of ancient gold leaf glass mosaic tesserae
No full textThe SEM-EDS analysis is proposed in this study as a useful tool to investigate the composition of both the glass and the gold alloy in leaf tesserae from mosaics of the 1st - 9th centuries. The comparison of the composition of the gold leaf of the tesserae with that of circulating gold coins (for which an important analytical data base is available), adds further information to the glass analysis, allowing us to improve the dating of the tesserae and increase the knowledge that may result from scientific analyses. The results demonstrate that good quantitative analyses of the metal leaf can be performed and that metal leaves made of pure gold or gold-silver alloys were used
Axially Moving Beams with Varying Length: Wave Reflection and Propagation Approach
No full textThe present paper analyses the dynamic of a clamped-free beam with axially transport of mass and varying length. The transverse vibration of the beam is described in term of harmonic propagating and decaying waves in dispersive medium. Reflection and propagation matrices for non-homogeneous and time-varying boundary conditions are given and a simple model that capture the dynamic behaviour of the system is defined. The analysis has proved that this method could be a valuable choice to gain important and concise results such as continuous change in the frequencies with time, increase or decrease of the transverse deformed shapes, energy evaluation within the domain with respect to the time. Eventually, an approximate formula to compute the continuous change in the natural frequencies together with investigations about the nature of the time rate of change of the vibrational energy are provided
Elisabetta I come Cinzia: Una regina e il suo oceano
No full textThe defeat of the Spanish Armada in the Channel in 1588 turned ‘a weak and feeble woman’ into one of the most relevant characters of late 16th-century European history: Elizabeth I, the Tudor Queen, was considered a semi-divine creature whom the myth, by comparing her to Moon goddesses like Diana and Cinthia, had made known as Semper Eadem.
The identification of the queen with Cinthia became more and more evident after the events occurred in 1588, when she was hailed as the moon goddess par excellence in a series of texts written by her contemporaries. It was in that period, the last decades of the 16th century, that Sir Walter Ralegh, courtier, poet and seaman, wrote The Poems to Cynthia: a collection of short poems where Elizabeth I, the lady of the seas, is addressed as his beloved. The role of Elizabeth as Cinthia is evident above all in Ralegh’s Last Book of the Ocean to Cynthia, an unfinished poem where the author, desperate for being in disgrace, appeals to her clemency and addresses her as the empress of the ocean.La sconfitta della flotta spagnola nelle acque della Manica nel 1588 trasformò una donna sola e fragile in una delle figure più rilevanti della storia europea di fine XVI secolo: Elisabetta I Tudor divenne per i suoi sudditi una creatura semidivina che il mito, accostandola alle divinità lunari Diana e Cinzia, avrebbe consegnato alla Storia come Semper Eadem.
Pur essendo evidente già nei primi tempi del suo regno, l’identificazione della sovrana con Cinzia, la dea che governa i mari e i corsi d’acqua, si fa ancora più evidente dopo il 1588, quando si assiste ad una fioritura di testi che esaltano Elisabetta I come la dea lunare per eccellenza.
Sempre in quegli anni di fine XVI secolo, Sir Walter Ralegh compone The Poems to Cynthia: letterato, cortigiano e uomo di mare, Ralegh dedicherà il suo amore ad Elisabetta come Cinzia, signora dei mari. Il legame tra Elisabetta e l’oceano è soprattutto evidente in Last Book of the Ocean to Cynthia, un poemetto incompiuto in cui il poeta, caduto in disgrazia, riunisce sotto il nome di Cinzia, la donna e la regina, l’amante e la dea, trasformando così Elisabetta in dea e imperatrice dei mari
Elisabetta I come Cinzia. Una regina e il suo oceano.
No full textLa sconfitta della flotta spagnola nelle acque della Manica nel 1588 trasformò una donna sola e fragile in una delle figure più rilevanti della storia europea di fine XVI secolo: Elisabetta I Tudor divenne per i suoi sudditi una creatura semidivina che il mito, accostandola alle divinità lunari Diana e Cinzia, avrebbe consegnato alla Storia come Semper Eadem. Pur essendo evidente già nei primi tempi del suo regno, l’identificazione della sovrana con Cinzia, la dea che governa i mari e i corsi d’acqua, si fa ancora più evidente dopo il 1588, quando si assiste ad una fioritura di testi che esaltano Elisabetta I come la dea lunare per eccellenza. Sempre in quegli anni di fine XVI secolo, Sir Walter Raleigh compone ‘The Poems to Cynthia’: letterato, cortigiano e uomo di mare, Raleigh dedicherà il suo amore ad Elisabetta come Cinzia, signora dei mari. Il legame tra Elisabetta e l’oceano è soprattutto evidente in ‘Last Book of the Ocean to Cynthia’, un poemetto incompiuto in cui il poeta, caduto in disgrazia, riunisce sotto il nome di Cinzia, la donna e la regina, l’amante e la dea, trasformando così Elisabetta in dea e imperatrice dei mari.The defeat of the Spanish Armada in the Channel in 1588 turned ‘a weak and feeble woman’ into one of the most relevant characters of late 16th-century European history: Elizabeth I, the Tudor Queen, was considered a semi-divine creature whom the myth, by comparing her to Moon goddesses like Diana and Cinthia, had made known as Semper Eadem. The identification of the queen with Cinthia became more and more evident after the events occurred in 1588, when she was hailed as the moon goddess par excellence in a series of texts written by her contemporaries. It was in that period, the last decades of the 16th century, that Sir Walter Raleigh, courtier, poet and seaman, wrote ‘The Poems to Cynthia’: a collection of short poems where Elizabeth I, the lady of the seas, is addressed as his beloved. The role of Elizabeth as Cinthia is evident above all in Raleigh’s ‘Last Book of the Ocean to Cynthia’, an unfinished poem where the author, desperate for being in disgrace, appeals to her clemency and addresses her as the empress of the ocean
SEM-EDX analysis of ancient gold leaf glass mosaic tesserae,
No full textMetal leaf (gold, silver or their alloys) glass tesserae began to be used in wall mosaics in the first century AD (the first examples are in Rome) and their use has been uninterrupted up to day.
The metal leaf could be obtained from circulating coins, jewellery or refining. According to various techniques that have changed over the centuries, the leaf was hot fixed between two glass layers.
From an archaeological point of view, it is interesting to know when and where these tesserae were made, if they were new made or if they were reused tesserae recovered from earlier dismantled mosaics.
The determination of the glass composition of the tesserae is not of great help in this connection, for the same kind of glass was used over long periods. Available information is
still scanter for glasses produced between the 1st to 8th centuries when the batch of raw materials (a natural soda called natron and a silica-lime sand) was melted in large tank furnaces
and chunks of raw glass were transported all over the Mediterranean to be remelted and shaped into manufacts in small pot furnaces.
The SEM-EDS analysis is proposed in this study as a useful tool to investigate the composition of both the glass and the gold alloy in leaf tesserae from mosaics of the 1st - 9th centuries. The comparison of the composition of the gold leaf of the tesserae with that of circulating gold coins (for which an important analytical data base is available), adds further information to the glass analysis, allowing us to improve the dating of the tesserae and increase the knowledge that may result from scientific analyses. The results demonstrate that good quantitative
analyses of the metal leaf can be performed and that metal leaves made of pure gold or gold-silver alloys were used
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