Academic literature on the topic 'Composers, spain'
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Journal articles on the topic "Composers, spain"
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Alyson Payne. "Art Song Composers of Spain: An Encyclopedia (review)." Notes 66, no. 4 (2010): 794–96. http://dx.doi.org/10.1353/not.0.0365.
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MARÍN, MIGUEL ÁNGEL. "EL CUARTETO DE CUERDA EN ESPAÑA DE FINES DEL SIGLO XVIII HASTA LA ACTUALIDAD UNIVERSIDAD DE GRANADA, 20–21 MARCH 2014." Eighteenth Century Music 12, no. 1 (February 17, 2015): 125–27. http://dx.doi.org/10.1017/s1478570614000530.
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Imagine you are asked in an academic meeting to name three or four prominent Spanish composers in the field of the string quartet. How many would you be able to cite? You might be tempted to answer that the quartet was in fact hardly cultivated in Spain, or you might perhaps wonder whether Boccherini could be taken to be a ‘Spanish’ composer. These potential responses to this fictional situation encapsulate well two of the historiographical preconceptions that have governed our view of this area, the first of which is, to put it in Friedhelm Krummacher's words, that Spanish composers ‘adopted a particularly abstinent attitude’ towards the genre (‘sich . . . besonders abstinent zum Streichquartett verhielten’; Geschichte des Streichquartetts, volume 2 (Laaber: Laaber, 2005), 400).
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Lee, Jisun, and Joonho Kim. "Ethnic Musical Elements of Andalusia, Spain, Reflected in Turina’s Piano Dance Music." Korean Society of Culture and Convergence 44, no. 12 (December 31, 2022): 413–25. http://dx.doi.org/10.33645/cnc.2022.12.44.12.413.
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This study investigated the ethnic musical elements of Andalusia, southern Spain, reflected in Turina’s piano dance pieces. Turina integrated the traditional music style and impressionism music technique in Paris with the national music of Andalusia, implementing it in piano music. Turina, a composer who occupies a major position in Spanish nationalist piano music, produced the most piano works of any Spanish composers of his time. The dance suite, a large portion of his piano work list, preserves the identity of flamenco as a complex art with dance, a representative music of the Andalusia, and recreates it within the framework of traditional European music. This study analyzed Andalusian national music elements in Turina’s piano dance pieces by dividing into melodic, harmonic, and rhythmic elements. Turina’s piano dance have gained musical universality by fusion with the mainstream music trends of Western Europe beyond the limits of Andalusia, Spain.
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Gordillo, Bernard. "Musical Cosmopolitanism in Central America: in search of an Obituary of Alejandro Cousin (ca. 1835 - 1910)." Ensayos: Historia y Teoría del Arte 24, no. 38 (September 21, 2021): 61–75. http://dx.doi.org/10.15446/ensayos.v24n38.98373.
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During the latter half of the nineteenth century, the countries of Central America incorporated European musicians into their state-generated projects. Administrations from Guatemala to Costa Rica appointed composers from Italy, Germany, Belgium, and Spain to help stimulate national musical culture and education, giving them leadership roles in state institutions. Belgian composer and conductor Alejandro Cousin arrived in the late 1850s and spent the rest of his life in El Salvador and Nicaragua where he established the national military band. This article, in the form of an obituary, sheds light on his noteworthy artistic legacy in Central America.
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Murga Castro, Idoia. "The Spanish Reception of Le Sacre du Printemps (1913–1936)." Dance Research 36, no. 1 (May 2018): 48–66. http://dx.doi.org/10.3366/drs.2018.0220.
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Centenary celebrations are being held between 2016 and 2018 to mark the first consecutive tours of Diaghilev's Ballets Russes in Spain. This study analyses the Spanish reception of Le Sacre du Printemps (The Rite of Spring) (1913), one of its most avant-garde pieces. Although the original work was never performed in Spain as a complete ballet, its influence was felt deeply in the work of certain Spanish choreographers, composers, painters and intellectuals during the so-called Silver Age, the period of modernisation and cultural expansion which extended from the end of the nineteenth century to the beginning of the Spanish Civil War.
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Rickards, Guy. "New Releases of music by Women Composers." Tempo 59, no. 231 (January 2005): 74–80. http://dx.doi.org/10.1017/s0040298205260072.
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CECILIE ØRE: A. – a shadow opera. Joachim Calmeyer, Anneke von der Lippe, Tilman Hartenstein, Henrik Inadomi, Lakis Kanzakis, Rob Waring (voices). Aurora ACD 5034.BETH ANDERSON ‘Swales and Angels’: March Swale1; Pennyroyal Swale1; New Mexico Swale2,1,3; The Angel4,1,5,6,8; January Swale1; Rosemary Swale1; Piano Concerto6,1,7,3,8. 1Rubio String Quartet, 2Andrew Bolotowsky (fl, picc), 3David Rozenblatt (perc), 4Jessica Marsten (sop), 5Joseph Kubera (vc, pno), 6André Tarantiles (hp), 7Darren Campbell (bass), c. 8Gary M. Scheider. New World 80610-2.RAGNHILD BERSTAD: Anstrøk for violin and cello1; Krets for orchestra9; Respiro for clarinet and tape2; Zeugma for ensemble3; Toreuma for string quartet4; Verto for voice, cello & percussion5,6,7; Emutatio for voice, chorus and orchestra5,8,9. 1Kyberia, 2Lars Hilde (cl), 3Affinis Ensemble, 4Arditti String Quartet, 5Berit Ogheim (voice), 6Lene Grenager (vc), 7Cathrine Nyheim (perc), 8Oslo Chamber Choir, 9Norwegian Radio Orchestra c. Christian Eggen. Aurora ACD 5021.TAILLEFERRE: Works for piano. Cristiano Ariagno (pno). Timpani 1C1074.‘Sweetly I Rejoice: Music based on Songs and Hymns from Old Icelandic Manuscripts’ by HILDIGUNNUR RÚNARSDÒTTIR, MIST THORKELSDÒTTIR, THÒRDUR MAGNÚSSON, JÒN GUDMUNDSSON, ELÍN GUNNLAUGSDÒTTIR and STEINGRÍMUR ROHLOFF. Gríma Vocal Ensemble. Marta Gudrún Halldórsdóttir (sop), EThos String Quartet. Instrumental Ensemble c. Gunnstein Òlafsson. Smekkleysa SMK31 (2-CD set).‘I Start My Journey’: Sacred music by Anon, SMÁRI ÓLASON, ELÍN GUNNLAUGSDÒTTIR, STEFÁN ÓLAFSSON, JAKOB HALLGRIMSSON, BARA GRÍMSDÒTTIR, HRÒDMAR INGI SIGURBJÖRNSSON, GUNNAR REYNÍR SVEINSSON. Kammerkor Sudurlands c. Hilmar Örn Agnarsson. Smekkleysa SMK17.‘New Zealand Women Composers’. DOROTHY KER: The Structure of Memory. JENNY McLEOD: For Seven. GILLIAN WHITEHEAD: Ahotu (O Matenga). ANNEA LOCKWOOD/Lontano: Monkey Trips (1995). Lontano c. Odaline de la Martinez. LORELT LNT116.SPAIN-DUNK: Phantasy Quartet in D minor. BEACH: String Quartet in one movement. SMYTH: String Quartet in E minor. Archaeus String Quartet. Lorelt LNT114.SAARIAHO: Du cristal…a la fumée1–3; Nymphaea4; Sept Papillons2. 1Petri Alanko (alto fl), 2Anssi Karttunen (vlc), 3Los Angeles PO c. Esa-Pekka Salonen, 4Kronos Quartet. Ondine ODE 1047-2.
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Young, Clinton D. "The Southern Slope of Monsalvat: How Spanish Wagnerism Became Catalan." 19th-Century Music 41, no. 1 (2017): 31–47. http://dx.doi.org/10.1525/ncm.2017.41.1.31.
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This article examines the development of Wagnerism in late-nineteenth-century Spain, focusing on how it became an integral part of Catalan nationalism. The reception of Wagner's music and ideas in Spain was determined by the country's uneven economic development and the weakness of its musical and political institutions—the same weaknesses that were responsible for the rise of Catalan nationalism. Lack of a symphonic culture in Spain meant that audiences were not prepared to comprehend Wagner's complexity, but that same complexity made Wagner's ideas acceptable to Spanish reformers who saw in the composer an exemplar of the European ideas needed to fix Spanish problems. Thus, when Wagner's operas were first staged in Spain, the Teatro Real de Madrid stressed Wagner's continuity with operas of the past; however, critics and audiences engaged with the works as difficult forms of modern music. The rejection of Wagner in the Spanish capital cleared the way for his ideas to be adopted in Catalonia. A similar dynamic occurred as Spanish composers tried to meld Wagner into their attempts to build a nationalist school of opera composition. The failure of Tomás Bréton's Los amantes de Teruel and Garín cleared the way for Felip Pedrell's more successful theoretical fusion of Wagnerism and nationalism. While Pedrell's opera Els Pirineus was a failure, his explanation of how Wagner's ideals and nationalism could be fused in the treatise Por nuestra música cemented the link between Catalan culture and Wagnerism.
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Bălan, Florin. "Fundamental Analysis of Chick Corea’s Improvisation in Spain (1972)." Studia Universitatis Babeş-Bolyai Musica 67, no. 2 (December 20, 2022): 99–110. http://dx.doi.org/10.24193/subbmusica.2022.spiss2.07.
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"Modern jazz can be considered an equal part of modern music, owing to the numerous experiments, at times considered strange or not really agreed by the audience. When talking about modern musical life and the possibilities for making music in a proper manner, no doubt that the value and genius of composers like Wolfgang Amadeus Mozart or Ludwig van Beethoven must be recognized. However, one must also realize that modern life, with its modern, contemporary music is also needed. The great jazz saxophonist, Charlie Parker considered improvisation the middle of the earth, the place where, if only for a few brief moments, one can be the best and the greatest composer in the world. Furthermore, the idea of a song (theme) is the only reason for musicians to come and elaborate together, with variational spontaneity, a unique and maybe unrepeatable musical manifestation. The works of Chick Corea reflect this point of view, as the analysis of the work Spain (1972), discussed in the article bellow, will demonstrate. The work represents the fusion between Spanish music and the compositional methods of modern jazz music, reflecting Corea’s unique style. Improvisation lies at the basis of this composition, offering the musician a multitude of possibilities for expressing his ideas regarding freedom and human nature. Keywords: jazz, piano improvisation, spontaneity, creativity, harmonical knowledge, contemporary "
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Dotsenko, Vitaly. "The theme of Spain in Russian music: from Glinka to Shostakovich." Latinskaia Amerika, no. 8 (2022): 68. http://dx.doi.org/10.31857/s0044748x0021216-6.
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The article is devoted to bilateral Russian-Spanish relations in the field of musical creativity during the 19th and 20th centuries. The problems of mutual influence of musical cultures of Spain and Russia and their reflection in the works of composers are raised. The issues of artistic interchange between the two countries are also highlighted by the example of the performing activities of prominent representatives of the musical art. The creative activity of M.Glinka, A.Rubinstein, F.Chaliapin, I.Stravinsky, M.Plisetskaya, A. Volkonsky, D. Shostakovich is considered.
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MORALES FLORES, IVÁN CÉSAR, and MALENA KUSS. "Art Music and Transterritoriality: Reflections on Cuban Migrations to Europe during the 1990s." Twentieth-Century Music 17, no. 3 (October 2020): 291–309. http://dx.doi.org/10.1017/s1478572220000134.
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AbstractThe fall of Communist rule in Eastern Europe (1989–91) had a profound impact on economic, socio-political, and cultural conditions in Cuba during the 1990s. It was the beginning of the so-called ‘Special Period in Times of Peace’. Increasing dire economic conditions on the island led to many changes that impoverished cultural life, including the relocation of composers in Europe, the United States, and other countries in the Americas. The situations encountered by composers who migrated to Europe varied, depending on generational differences and on the dynamics of the socio-political and cultural powers to which each of them were exposed in their new reception contexts. Whether adopting an uncontested identification with the new cultural milieu or resorting to discursive strategies of appropriation and de/re-territorialized negotiation, this text centres on the compositional journeys of four Cuban composers who settled in different European cities: Leo Brouwer (Córdoba, Spain); Eduardo Morales-Caso (Madrid); Keyla Orozco (Amsterdam); and Louis Aguirre (Aalborg, Denmark). Each case represents an invaluable experience of aesthetic reconstruction in a new creative territory that, by its own transterritoriality, has in turn enriched the sonic map of the Caribbean island.
Dissertations / Theses on the topic "Composers, spain"
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Wolff, Victoria. "From literary page to musical stage: writers, librettists, and composers of zarzuela and opera in Spain and Spanish America (1875-1933)." Thesis, McGill University, 2008. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=21989.
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In this present work, I explore the rise of zarzuela and opera as cultural expressions in both Spain and Spanish America and their relationships to the societies in which they were produced. My research will show that zarzuela and opera became a new space from which to promote a Hispanic musical tradition and to imagine and express the essence of the Hispanic nation, conceived of transnationally, but fundamentally tied to Spain. I specifically study works of Hispanic literature that were rewritten as libretti for performance. The works chosen for this project are La Monja Alférez by Carlos Coello and Miguel Marqués, Pepita Jiménez by Francis Burdett Money-Coutts and Isaac Albéniz, Tabaré by Tomás Breton, Cecilia Valdés by Agustín Rodríguez, José Sánchez-Arcilla, and Gonzalo Roig, and, finally, Adiós a la bohemia by Pío Baroja and Pablo Sorozábal. Librettists and composers working in collaboration searched for a suitable literary medium to express national essence through musical drama. Therefore, the original literature used as the foundations for zarzuela or opera varies from works of Golden Age theater, prose narrative or the novel, epic poetry, the colonial novel, and the short story. Furthermore, in the works chosen, specific themes relevant to the nation are addressed, such as gender, national identity, history and colonialism, race, and modernity. In addition to examining how artistic works are transformed when modified from one genre (the literary) to another (the musical) within a new cultural context, I use a sociological approach to investigate the unique collaborations between writers, librettists, and composers in the creation of these musical-dramatic works. As spectacles produced for mass audiences, I also employ performance theory to understand how meaning is constructed through performance. Integral to my study is a discussion of how these artistic creations traversed national boundaries and moved across the Atlantic. The temporal boLe présent travail porte sur l'essor de la zarzuela et de l'opéra en tant qu'expressions culturelles en Espagne et en Amérique hispanique, de même que leur rapport aux sociétés qui les ont vu naître. Je m'intéresse particulièrement aux œuvres de la littérature hispanique adaptées en livret d'opéra. Je tenterai de démontrer que la zarzuela et l'opéra ont créé un nouvel espace pour promouvoir la tradition musicale hispanique, qui permet d'imaginer et d'exprimer l'essence de la nation hispanique, dispersée dans de nombreux pays, mais fondamentalement liée à l'Espagne. J'ai choisi, pour ce projet, La Monja Alférez de Carlos Coello et Miguel Marqués, Pepita Jiménez de Francis Burdett Money-Coutts et Isaac Albéniz, Tabaré de Tomás Bretón, Cecilia Valdés d'Agustín Rodríguez, José Sánchez Arcilla et Gonzalo Roig, et enfin, Adiós a la bohemia de Pío Baroja et Pablo Sorozábal. Des librettistes et des compositeurs se sont associés afin de trouver un médium littéraire approprié pour exprimer l'essence de la nation dans les œuvres musico-dramatiques. Ainsi, les diverses œuvres littéraires à la base de la zarzuela et de l'opéra ont été puisées dans le théâtre du Siècle d'or, la prose narrative et le roman, la poésie épique, le roman colonial et la nouvelle. J'examine en outre dans les œuvres mentionnées ci-dessus les thèmes touchant de près à la nation, notamment le genre, l'identité nationale, l'histoire et le colonialisme, la race et la modernité. En plus d'analyser les transformations que subissent les œuvres artistiques lorsqu'elles sont transposées d'un genre (littéraire) à un autre (musical) dans un nouveau contexte culturel, j'observe à l'aide d'une approche sociologique les collaborations uniques entre les écrivains, librettistes et compositeurs ayant créé ces œuvres musico-dramatiques. Je m'appuie également sur la théorie de la performance pour comprendre de quelle manière s'articule le sens lors d
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Holanda, Junior Lino Martins de 1984. "Ressonância de spin eletrônico (ESR) em compostos intermetálicos." [s.n.], 2014. http://repositorio.unicamp.br/jspui/handle/REPOSIP/277002.
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Orientador: Pascoal José Giglio PagliusoTese (doutorado) - Universidade Estadual de Campinas, Instituto de Física Gleb Wataghin
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Resumo: Nesta Tese de Doutorado desenvolvemos estudos de Ressonância de Spin Eletrônico (ESR) em compostos intermetálicos, incluindo os férmions pesados ?-YbAlB4, ?-YbAlB4 and ? -YbAlxFe1-xB4, os metais ?-LuAlB4, AlB2 e o isolante Kondo, FeSi. Nossas medidas foram feitas em um espectrômetro modelo ELEXSYS-CW Bruker usando uma cavidade ressonante do tipo TE102 para a faixa de frequência em banda X (?~ 9.4GHz). A técnica de Ressonância de Spin Eletrônico aplicada aos compostos Férmions pesados foi sempre um desafio devido a presença de fortes correlações eletrônicas que tendem a alargar as linhas de ESR. Porem, nos últimos anos essa técnica ganhou renovado interesse após a descoberta do sinal de ESR na rede Kondo YbRh2Si2. Após esse trabalho, ESR voltou a ser considerada uma técnica importante para explorar os elétrons 4f e suas interações microscópicas em compostos de terras raras, uma vez que ela sonda diretamente o íon no sitio da rede. A motivação desse trabalho e, portanto, usar a técnica de ESR para entender a dinâmica dos elétrons 4f pesados em uma rede de Kondo, para os novos compostos férmions pesados ?-YbAlB4, -YbAlB4 and ?-YbAlxFe1-xB4. Neste trabalho buscou-se utilizar a técnica de ESR nesses compostos para alcançar o entendimento microscópio dos critérios que permitem a observação de um sinal de ESR em férmios pesados. Alem do mais, quando o sinal e observado, a sonda de ESR e propícia para acompanhar a evolução dos elétrons 4f em altas temperaturas para quase-partículas pesadas em baixas temperaturas. Nossas observações nos permitiram propor um cenário qualitativo baseado na existência de um modo ressonante acoplado entre ons Kondo e os elétrons de condução. Nos discutimos as características físicas gerais para que compostos férmios pesados sejam candidatos a apresentarem tal sinal de ESR. Ainda neste trabalho, estudamos os compostos intermetálicos ?-LuAlB4, AlB2 e FeSi com propriedades estruturais ou eletrônicas similares as dos compostos ?-YbAlB4, ?-YbAlB4 and ?-YbAlxFe1-xB4 em busca de uma generalizac~ao mais abrangente do cenário proposto neste trabalho
Abstract: In this work, we have performed an Electron Spin Resonance (ESR) study in intermetallic compounds including the heavy fermions ?-YbAlB4, ?-YbAlB4 and ? -YbAlxFe1-xB4, the Fermi liquid metals ?-LuAlB4, AlB2 and the Kondo insulator, FeSi. Our measurements were made on a spectrometer Bruker CW-model ELEXSYS using a resonant cavity TE102 in X Band ( ?~ 9.4GHz). The Electron Spin Resonance technique applied to heavy fermions compounds was little explored due to difficulty in finding ESR signal of Kondo ions due to the large coupling between the resonating spins and conduction electrons. However, in recent years this technique has become focus of great attention especially after the discovery of the ESR signal in a Kondo lattice YbRh2Si2. In this context, ESR was brought to the scene as one of the main techniques to bring insights to this problem since it could probe directly the f electrons of Kondo ions and their interaction with the conduction electrons. The motivation of this work is to use the ESR technique to investigate new heavy fermions compounds and to understand when these systems can present an ESR signal. In these cases ESR can help to understand more deeply how localized f electrons at high-T evolve to itinerant heavy quasi-particles in a low-T metallic state. Our observations for ?-YbAlB4, -YbAlB4 and ?-YbAlxFe1-xB4, allowed us to make some qualitative speculations about this phenomenon and within this scenario, we propose some general characteristics for heavy fermions compounds to become candidates to present ESR signal. In this work we have also measured ?-LuAlB4, AlB2 and the Kondo insulator, FeSi, in an attempt to generalize the ESR results found for ?-YbAlB4, ?-YbAlB4 and ?-YbAlxFe1-xB4 to a more broad family of compounds
Doutorado
Física
Doutor em Ciências
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Brahim, Houari. "Spectroscopie électronique et couplage spin-orbite de composés organométalliques." Phd thesis, Université de Strasbourg, 2013. http://tel.archives-ouvertes.fr/tel-01070647.
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Les travaux théoriques réalisés dans le cadre de la thèse nous ont permis d'étudier en détail, sur la base de méthodes DFT, TD-DFT et ab initio les propriétés structurales, électroniques et spectroscopiques de deux classes de molécules, les composés carbonyles hydrures des métaux de transition de la 1re et 3me rangée (Mn, Re) et les complexes cyclométalants phenyl pyridine de l'iridium. L'accent a été mis plus particulièrement sur les effets de couplage spin-orbite sur les spectres d'absorption électronique de ces molécules. La quantification de ces effets a permis de montrer que seuls les spectres électroniques des complexes possédant un centre métallique de la 3me rangée des métaux de transition (Re, Ir) étaient modifiés par la correction spin-orbite en perturbation. Le caractère des états, MC ou MLCT, la proximité des états singulets et triplets sont les facteurs qui influencent fortement l'interaction spinorbite entre états excités. Un effet remarquable observé pour le complexe du rhenium est le décalage important du spectre d'absorption vers le rouge du à l'éclatement de l'état triplet le plus bas. Dans ce cas l'effet de couplage spinorbite doit être pris en compte pour obtenir un spectre plus proche de l'expérience. Un effet spin-orbite déjà observé sur d'autres systèmes est l'augmentation de de la densité d'états par éclatement des états triplets et la diminuation des force d'oscillateur qui se répartissent sur ces états pour aboutir à des spectres d'absorption électronique plus étendus et moins intenses. L'étude menée sur les complexes d'iridium pour lesquels les spectres expérimentaux sont particulièrement mal résolus, montre un accord remarquable entre ceux-ci est les spectres d'absorption théoriques TD-DFT. Cependant les effets de fonctionnelle peuvent jouer un rôle important sur la qualité des spectres. Pour ces molécules les calculs ab initio n'ont pu aboutir au-delà du niveau CASSCF. Les états excités sont très délocalisés dans ces molécules et il est difficile de décrire au même niveau d'approximation les différents types d'états MLCT, LLCT, MC, LMCT... Dans la plupart des cas les fonctionnelles B3LYP et PW91 donnent des résultats satisfaisants pour les complexes d'iridium. Les éclatements spin-orbite des états électroniques triplets peuvent être supérieurs à 1500 cm-1 dans les complexes possédant un centre métallique de la 3me rangée des métaux de transition.
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Stein, Roberto de Mello. "RPE em compostos de grafite intercalado com ALCL3." [s.n.], 1985. http://repositorio.unicamp.br/jspui/handle/REPOSIP/277549.
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Orientador: Carlos RettoriTese (doutorado) - Universidade Estadual de Campinas, Instituto de Fisica Gleb Wataghin
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Resumo: Nós mostramos que no Composto de Grafite Intercalado com AlCl3, tipo aceitador, a dependência com a temperatura da resistividade no plano e na direção do eixo-c entre 100K e 300K, pode ser obtida experimentalmente através da análise da intensidade e da forma da linha da ressonância de spin dos portadores de carga. Os resultados indicam um comportamento metálico e do tipo salto por ativação térmica para o transporte de carga no plano e no eixo-c, respectivamente. A análise da ressonância no grafite puro apresenta dentro do erro experimental, a dependência com a temperatura esperada para a resistividade no plano e no eixo-c e uma susceptibilidade que independe da temperatura. A dependência da largura da linha é atribuída a dependência com a temperatura da mobilidade dos portadores e da razão entre a probabilidade de transição para "spin-flip" devido ao acoplamento spin-órbita e o espalhamento coulombiano. Para estágios um e sete os parâmetros da ressonância revelam uma transição de fase a 210K e 168K respectivamente
Abstract: We show that the temperature dependence of the in-plane and c-axis resitivities between 100K and 300K for the acceptor AlCl3 - Graphite Intercalated Compounds can be obtained from the analysis of the intensity and lineshape of the resonance in a conduction carrier spin resonance experiment. The results suggest a metallic and thermal activated hopping like character for the in-plane and c-axis charge transport respectively. The analysis of the resonance for pure graphite gives, within the experimental accuracy, the expected temperature dependence for the in-plane and c-axis resistivities, and an almost temperature independent Pauli paramagnetic susceptibility. The temperature dependence of the linewidth is attributed to the dependence of both the carrier s mobility and the ratio between the transition probability for spin-flip due to spin-orbit coupling and the coulomb scattering. For stage one and seven the resonance parameters reveal a phase transition at 210K and 168K respectively
Doutorado
Física
Doutor em Ciências
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Ciomaga, Hatnean Monica. "Synthèse et étude de composés Ga₂₋ₓFeₓO₃." Phd thesis, Université Paris Sud - Paris XI, 2012. http://tel.archives-ouvertes.fr/tel-00868789.
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Une sous-classe intéressante de matériaux multiferroïques est celle des composés multiferroïques magnétoélectriques, dans lesquels il existe un couplage entre les paramètres d'ordres ferroïques (magnétique et électrique). De ce point de vue, la classe des matériaux Ga₂₋ₓFeₓO₃ a attiré l'attention des chercheurs. Ces composés sont actuellement connus pour leur température de transition élevée ainsi que pour l'interaction possible entre leurs propriétés ferrimagnétiques et piézoélectriques. Leur structure cristallographique et magnétique est assez complexe, du fait du désordre de substitution interne Fe/Ga. Les oxydes M₂Ga₂Fe₂O₉ (M=In, Sc) appartiennent à cette même famille de matériaux et ont été synthétisés pour la première fois afin d'obtenir une structure cristallographique ordonnée de GaFeO₃. Afin d'étudier les propriétés physiques de ces différents composés, nous avons synthétisé par la méthode de la zone flottante (au four à image), en utilisant différentes conditions de croissance, des monocristaux de composition Ga₂₋ₓFeₓO₃ (x=0.90, 1.00 et 1.10). Nous avons également élaboré des échantillons polycristallins de composés GaFeO₃ faiblement dopés en indium ainsi que le composé M₂Ga₂Fe₂O₉ (M=In, Sc). Nous avons enfin préparé de monocristaux de composition In₂Ga₂Fe₂O₉ par la méthode de croissance en flux. L'affinement Rietveld des diffractogrammes des rayons X et des neutrons nous a permis de montrer que les céramiques de GaFeO₃ faiblement dopées en indium et les monocristaux de Ga₂₋ₓFeₓO₃ cristallisent dans le groupe d'espace Pc2₁n. Les paramètres cristallins et la température de Néel caractéristiques pour les monocristaux de Ga₂₋ₓFeₓO₃ varient de manière linéaire avec la teneur en fer. Les affinements nous ont permis de conclure que la structure de ces composés est caractérisée par un désordre élevée (25% de la quantité du fer se trouve sur les sites natifs du gallium). L'incorporation graduelle de l'indium s'accompagne d'une augmentation du volume de la maille ainsi qu'à une diminution de la température de transition magnétique. Le spectre d'excitations magnétiques mesuré pour les cristaux de Ga₂₋ₓFeₓO₃ nous a permis de mettre en évidence une coexistence de l'ordre ferrimagnétique à longue portée et d'un signal de diffusion diffuse en-dessous de la température de Néel. Ce signal diffus suggère l'existence d'une composante de type verre de spin du fait du désordre interne des sites. L'étude de la variation thermique de la constante diélectrique sur un cristal de GaFeO₃ révèle l'absence d'un couplage magnétoélectrique au sein de ces matériaux. L'affinement Rietveld des diagrammes de diffraction des rayons X et des neutrons mesurés sur les poudres de M₂Ga₂Fe₂O₉ (M=In, Sc) révèle une structure orthorhombique de type Pba2 fortement désordonnée, avec quatre sites cationiques d'occupation mixte. Les données de susceptibilité DC et AC couplées avec les mesures de chaleur spécifique et les spectres Mössbauer indiquent, en-dessous d'une température de Tg ≈ 19 K, l'existence d'un état fondamental de type verre de spin dans ce système. Les mesures du spectre d'excitations magnétiques ont mis en évidence l'absence d'ordre magnétique à longue portée et confirment l'existence d'une transition d'un état paramagnétique vers un état verre de spins. L'existence d'un comportement de type verre de spin dans les systèmes Ga₂₋ₓFeₓO₃ et M₂Ga₂Fe₂O₉ (M=In, Sc) souligne l'importance du désordre interne pour la caractérisation de l'état fondamental magnétique.
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Zein, Samir. "Etudes Theoriques des Composes a Transition de Spin mono- et bi-nucleaires." Phd thesis, Université Claude Bernard - Lyon I, 2005. http://tel.archives-ouvertes.fr/tel-00193882.
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Ce travail présente l'étude théorique des propriétés magnétiques de composés à transition de spin du fer(II) en fonction de la nucléarité des complexes et de la nature des ligands environnants.La corrélation entre la position des noyaux et les propriétés magnétiques des composés mononucléaires a été faite sur la base des calculs DFT du gap énergétique entre les différents états de spin. Ces études ont permis de tirer des nouvelles conclusions qualitatives quant au rôle du phénomène d'ordre-désordre dans les composés à transition de spin. Certaines paramètres thermodynamiques ont pu être évalué à travers les calculs des fréquences vibrationnelles.
L'étude de systèmes binucléaires présentant un couplage magnétique intramoléculaire a permis l'interprétation des différents comportements magnétiques de ces systèmes (pas de transition, transition en une seule étape ou deux étapes). L'application de l'approche DFT/broken symmetry a permit la quantification des constantes d'échange, difficile d'accès aux mesures magnétochimiques traditionnelles.
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Silva, Luiz Eduardo de Lima e. "Influência da reorientação de spin nas propriedades termomagnéticas dos compostos da série Ho1-yGdyAl2." Universidade do Estado do Rio de Janeiro, 2014. http://www.bdtd.uerj.br/tde_busca/arquivo.php?codArquivo=7012.
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Coordenação de Aperfeiçoamento de Pessoal de Nível SuperiorNeste trabalho foram estudadas as propriedades estruturais e termomagnéticas dos pseudobinários Ho1-yGdyAl2, através de abordagens experimentais e teóricas. A parte experimental envolveu a preparação de cinco amostras, com as concentrações y = 0, 0,25, 0,5, 0,75 e 1, assim como medidas de magnetização, calor especifico e da variação adiabática da temperatura. Na parte teórica usamos um hamiltoniano modelo que leva em consideração a interação dos íons com o campo magnético aplicado, com o campo elétrico cristalino e a troca entre os íons magnéticos. A entropia da rede foi considerada na aproximação de Debye e a entropia eletrônica na aproximação do gás de elétrons livres. A influência das reorientações de spin, espontâneas e induzidas pelo campo magnético, na magnetização e no calor especifico foram investigadas sistematicamente tanto a partir de dados experimentais quanto teoricamente. Também obtemos resultados teóricos para a variação de entropia e variação adiabática da temperatura alterando a intensidade ou a direção do campo magnético.
In this work the structural and thermomagnetic properties of the pseudobinaries Ho1-yGdyAl2 have been studied by experimental and theoretical approaches. The experimental part included the preparation of five samples, with concentrations y = 0, 0,25, 0,5, 0,75 and 1, as well as magnetization, specific heat and adiabatic temperature change measurements. In the theoretical part we used a model Hamiltonian which includes the interaction of the ions with the applied magnetic field, the crystalline electrical field and exchange interactions with others magnetic ions. The lattice entropy has been considered within Debyes approach and the electronic entropy as that of a free electron gas. The spin reorientation influence, spontaneous and magnetic field induced ones, in magnetization and specific heat has been systematically investigated either from experimental data as well as theoretically. We have also obtained theoretical results for the isothermal entropy change and the adiabatic temperature change by modifying either the magnetic field strength or its direction.
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Saint, Jean Michel. "Resonance de spin electronique dans les composes d'insertion bidimensionnels : exemple de l'asf#5-graphite." Paris 7, 1989. http://www.theses.fr/1989PA077111.
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Etude dans les composes d'insertion c#8asf#5 en utilisant un methode standard par reflexion avec un champ magnetique radiofrequence parallele au plan graphitique. Mise en evidence de l'influence des conditions experimentales et des dimensions finies de l'echantillon sur la forme de raie. Developpement d'un modele theorique pour interpreter la forme de raie. L'absorption par les surfaces paralleles a l'axe c est prise en compte. La forme de raie est alors gouvernee par la conductivite et par le coefficient de diffusion. Determination des temps de relaxation de spin t#2 a partir des largeurs de raie et des coefficients de diffusion
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Leclercq, Bénédicte. "Etude de la transition verre de spin dans les composes cd#1##xmn#xte." Paris 7, 1993. http://www.theses.fr/1993PA077069.
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Les semiconducteurs semimagnetiques cd#1##xmn#xte representent le meilleur exemple de verres de spin de heisenberg, avec des interactions de courte portee. Nous avons etudie la dynamique critique dans les composes cd#1##xmn#xte, en fonction de la concentration, par des mesures precises de rotation faraday, effectuees au voisinage de la temperature de gel, sur une large gamme de frequences. La dependance en temperature du temps de relaxation moyen est bien decrite par la loi conventionnelle de ralentissement critique, ce qui permet de determiner les temperatures critiques pour differentes concentrations. Nous avons teste la validite de la loi d'echelle dynamique pour la partie imaginaire de la susceptibilite complexe sur toute la gamme de temperature et de frequence. L'observation d'une fonction d'echelle unique, avec les memes exposants critiques, dans toute la gamme de composition, met en evidence l'existence d'une classe d'universalite dans ces composes. Les lois d'echelle dynamiques observees experimentalement sont en bon accord avec la fonction d'autocorrelation de spin, deduite des simulations monte carlo sur un modele verre de spin d'ising tridimensionnel
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Forestier, Thibaut Létard Jean-François. "Synthèse de nanoparticules à transition de spin en milieu confiné." S. l. : Bordeaux 1, 2008. http://ori-oai.u-bordeaux1.fr/pdf/2008/FORESTIER_THIBAUT_2008.pdf.
Full textBooks on the topic "Composers, spain"
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Xavier Montsalvatge: A musical life in eventful times. Hillsdale, NY: Pendragon Press, 2012.
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Clark, Walter Aaron. Enrique Granados: Poet of the piano. New York, NY: Oxford University Press, 2006.
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The piano in Spain: From its introduction until Joaquín Turina. Madrid: Bassus Ediciones, 2010.
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Sacred passions: The life and music of Manuel de Falla. New York: Oxford University Press, 2005.
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1953-, Krause William, ed. Federico Moreno Torroba: A musical life in three acts. New York: Oxford University Press, 2013.
Find full textBook chapters on the topic "Composers, spain"
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Ferreiro Carballo, David. "The National Society of Music (1915-1922) and the Ambivalent Democratization of Music in Spain." In Music and Democracy, 87–106. Vienna, Austria / Bielefeld, Germany: mdwPress / transcript Verlag, 2021. http://dx.doi.org/10.14361/9783839456576-004.
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The Spanish National Society of Music was founded in 1915 with a double objective: first, to define, once and for all, the musical identity of the country; and second, to create a space where composers and musicians could develop their artistic careers. In this sense, both the society's self-denomination as »national,« and its apparent integrating nature suggest a clear attempt to democratize Spanish music. However, the present paper shows that the reality was completely different. Yet, by analyzing the society's internal ideology, by describing its policy for selecting the repertoire of the concerts, and by examining its actual social impact, David Ferreiro Carballo demonstrates that the National Society of Music was a non-democratic institution with an elitist understanding of the art. This reality strongly contrasts its typically idealized conception and will allow the reader to understand its disappearance in 1922, after only seven seasons of activity.
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Drozd, J., A. Jezierski, and Y. Chen. "Chemical and electron spin resonance properties of municipal solid waste composts." In Modern Agriculture and the Environment, 395–400. Dordrecht: Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-011-5418-5_32.
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Clark, Walter Aaron. "The Romero Repertoire." In Los Romeros, 215–47. University of Illinois Press, 2018. http://dx.doi.org/10.5622/illinois/9780252041907.003.0014.
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There are basically five ways that the Romeros have added new works to the guitar repertoire: commissioning, composing, arranging, reviving, or improvising them. They have requested works from leading composers in Spain and the U.S.; composed works, mostly by Celedonio for solo guitar; arranged numerous orchestral and stage works for quartet; revived neglected classics, especially from the 1800s; and improvised flamenco numbers, as well as adding flourishes to notated music.
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"Salvador Bacarisse: A ‘Performer’s Composer’ in Exile." In Music and Exile in Francoist Spain, 67–92. Routledge, 2016. http://dx.doi.org/10.4324/9781315562896-9.
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Weinberger, Leon J. "Hymnographic Developments in Spain." In Jewish Hymnography, 87–135. Liverpool University Press, 1997. http://dx.doi.org/10.3828/liverpool/9781874774303.003.0003.
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This chapter discusses the hymnographic developments in Spain. Although the Andalusians adopted much of the prevailing culture, their Arabism was tempered by the reality of being exiled from their national home. The degree to which Arabism was pervasive is seen in the Andalusians’ attempt to adapt Arabic-style quantitative metrics for use in their writings for the synagogue. They also composed their piyyuṭim in the prevailing styles of Arabic prosody, the qaṣīdah, a monorhyme hymn in metrically balanced hemistichs, and muwashshaḥ, a hymn where the rhyme is variable in the strophes and constant in the refrain. Distinctive in the Hispanic piyyuṭ is the poet’s signature in the acrostic. Although the Hispanic synagogue poets composed in most of the older genres, they added some unique features. However, a change in the fortunes of Iberian Jewry in the latter half of the twelfth century resulted from the invasions of the Muslim Almoravids and Almohades. With the Christian reconquest, the earlier courtly life and culture came to an end. The celebrated Andalusian poets became vagabonds and their grandee patrons were replaced by an emerging middle class. The new cantor-poets, sensitive to the more modest needs of their constituents, fashioned a conservative tone in liturgical writing.
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Manning, Jane. "BETSY JOLAS (b. 1926)L’Oeil égaré (1961–2002)." In Vocal Repertoire for the Twenty-First Century, Volume 2, 115–19. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780199390960.003.0037.
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This chapter addresses French-American composer Betsy Jolas’s L’Œil égaré (1961–2002), a powerful cycle written over a wide span of years. In this piece, the composer’s bold, innovative spirit bursts from every page. A welter of technical, musical, and interpretative challenges are offered, but these should not daunt advanced singers with a high standard of musicianship. The six short settings are full of contrasts within a richly diverse stylistic palette. There is, however, a keen awareness of practicality regarding the baritone range—the few instances of upper and lower extremes are approached either via portamentos or loud climaxes when energy level is high. Each movement is vivid enough to be performed individually. The texts resonate with colourful imagery. To sing in the original language is, of course, ideal, but the composer’s translations are impressive in managing to preserve their heightened lyricism and searching insights, as well as matching small subtleties of syllabic emphasis.
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Feu, Montse. "Introduction." In Fighting Fascist Spain, 1–22. University of Illinois Press, 2020. http://dx.doi.org/10.5622/illinois/9780252043246.003.0001.
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At the turn of the twentieth century, Spanish workers arrived in the United States already imbued with radical traditions rooted in the socialism or anarchism of their homeland. These radicals would play a critical role in the broader antifascist political efforts of the coming years during the Spanish Civil War (1936–1939) and the Francisco Franco dictatorship (1939–1975). About two hundred workers’ and immigrant associations came together under the Sociedades Hispanas Confederadas (Confederation of Hispanic Societies, SHC) and published the bilingual periodical España Libre (Free Spain) in New York from 1939 to 1977, when democratic elections were held again in Spain. The confederation grew to 65,000 members at its height. Mainly composed by workers, the Confederadas understood Spanish fascism as a complex and adapting interlocking of fascist, extreme-right, and capitalist values. Franco fascistized Spain with a culture of National Catholicism and cult of military power that enforced social cleansing of dissenters and terrorized the population. España Libre continued an antifascist, progressive, and radical political and cultural legacy in the United States while Franco intended to destroy it in Spain. It constituted an alternative progressive path to modernity, albeit an exiled one.
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"National Report for Spain." In Commencement of Insolvency Proceedings, edited by Ignacio Tirado. Oxford University Press, 2012. http://dx.doi.org/10.1093/oso/9780199644223.003.0017.
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The current insolvency legislation is the result of a long and cumbersome evolution. It was approved on 7 July 2003 (Ley 22/2003, the Insolvency Act 2003 (‘IA’)) and came into force on 1 September 2004, putting an end to one of the most embarrassing situations that the Spanish legal system has ever had to endure: coming into the 21st century with an insolvency legislation dating back to the beginning of the 19th century. The previous insolvency system was composed of as many as five different legal instruments: the Commercial Codes (Codigo de Comercio) of 1885 and 1829 (only partially in force) and the Law on Suspension of Payments of 1922 (Ley de Suspension de Pagos), which regulated some procedural aspects and all material aspects of commercial insolvency; the Civil Code of 1889, which regulated the insolvency of the general—non-commercial—debtor; and the Civil Procedural Law, dating from 1881 (Ley de Enjuiciamiento civil ). It can then be said that the insolvency of a large business in a developed European economy (the fifth largest in the EU) had to be solved with laws that dated from two centuries before. The reform has been a relief and it has greatly modernised Spain’s economic legal legal framework. However, this process was neither easy nor did it produce a fully satisfactory result.
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Miyasaka, Hitoshi. "Hybrid Materials Composed of Organic Radicals and Ru Dimers." In World Scientific Reference on Spin in Organics, 169–205. WORLD SCIENTIFIC, 2018. http://dx.doi.org/10.1142/9789813230200_0004.
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Manning, Jane. "DAVID BLAKE (b. 1936)Beata L’Alma (1966)." In Vocal Repertoire for the Twenty-First Century, Volume 1, 46–49. Oxford University Press, 2020. http://dx.doi.org/10.1093/oso/9780199391028.003.0014.
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This chapter discusses the Beata L’Alma, a short but compelling cantata by David Blake. This is a piece that adheres strictly to the discipline of twelve-tone composition, yet manages to create within it an infinite variety of brilliantly intricate and satisfying writing for both voice and piano. Though the idiom may seem challenging at first, it eventually brings the rewards of enhanced technical prowess and an improved level of musicianship. An excitingly elaborate piano part reflects the fact that the composer is an excellent pianist. In addition, there is much scope for creating a variety of imaginative vocal timbres, and passages of dramatic tension are contrasted by lyrical phrases that use the voice's fullest range. The work is through-composed in one long span, and a piano solo divides the text's two stanzas. Standard notation is mostly used (without key signatures).
Conference papers on the topic "Composers, spain"
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Arenas, Juan José, Guillermo Capellán, Alejandro Godoy, Marianela García, Juan Ruiz, and Santiago Guerra. "La Florida Suspension Bridge. Oviedo, Spain." In IABSE Congress, Stockholm 2016: Challenges in Design and Construction of an Innovative and Sustainable Built Environment. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2016. http://dx.doi.org/10.2749/stockholm.2016.2298.
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La Florida Bridge is a €5,9 million project promoted by Oviedo City Council to provide a new link between “La Florida” and “Western Park” neighbourhoods. The final design, developed by Arenas & Asociados, represents an innovation in urban bridges, solving the connection between both areas with a flying semi-circle roundabout suspended from its inner edge by a system of hangers.<p> The main novelty of this solution is that hangers and backstays are fixed to the same suspension system, composed by two main cables making a loop and anchored to an articulated mast. The structure is completed with a post-tensioned concrete approach viaduct, a composite connection span between roundabout and viaduct, two cantilever footbridges arising from the concrete deck and flying parallel to the roundabout, and finally, a concrete ring as counterweight for the backstays anchorage. K
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Belém, Fabiano Muniz, Marcelo Ganem, Celso França, Marcos Carvalho, Alberto H. F. Laender, and Marcos André Gonçalves. "Reforço e Delimitação Contextual para Reconhecimento de Entidades e Relações em Documentos Oficiais." In Simpósio Brasileiro de Banco de Dados. Sociedade Brasileira de Computação - SBC, 2022. http://dx.doi.org/10.5753/sbbd.2022.224650.
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Arquiteturas neurais baseadas em transformers tornaram-se o principal componente de vários métodos do estado-da-arte em tarefas de processamento de linguagem natural, tais como Reconhecimento de Entidades Nomeadas e Extração de Relações (REN+ER). Como essas arquiteturas baseiam-se em aspectos semânticos de sequências de palavras, elas podem não funcionar na identificação e delimitação de entidades nomeadas quando há pouco contexto semântico associado, tais como entidades compostas por dígitos e pontuações apenas (e.g., números de CPF) e entidades com nomes compostos. Neste artigo, são propostas novas técnicas de reforço contextual e delimitação de entidades baseadas em pré- e pós-processamento de dados para enriquecer o contexto semântico, melhorando assim um método do estado-da-arte para REN+RE, o SpERT (Span-Based Entity and Relation Transformer). Tais técnicas foram avaliadas usando dados reais de diários oficiais e de processos judiciais. Os resultados mostram que, quando aplicadas em conjunto, as estratégias de pré- e pós-processamento levam a ganhos significativos na efetividade de REN+ER.
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Sousa Oliveira, Carlos, and Ana Luísa VIEIRA. "Frequency-amplitude of Vibration of Modern Aesthetic Footbridges for Walking and Cycling." In Footbridge 2022 (Madrid): Creating Experience. Madrid, Spain: Asociación Española de Ingeniería Estructural, 2021. http://dx.doi.org/10.24904/footbridge2022.236.
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<p>New urban developments are changing the traditional footbridges by contemplating (i) the new cyclic functionality of these structures, (ii) the wood and other light structural materials and, in many cases, (iii) the introduction of aesthetics. Previous studies were made on pedestrian footbridges composed by a simple supported beam with uniform distributed characteristics. The main objective of these past projects was to pass pedestrians across, safe and comfortably, with minimal cost of construction, without much aesthetics.</p><p>Nowadays, footbridges appeal to the best architects and engineering consortiums and each new one is viewed as entering in an aesthetic contest. The objective now is similar as referred before but, besides adding the cycling vehicles, they should look into aesthetics and to the environmental context. They span larger distances making use of more adequate materials. However, the dynamic characteristics might be a problem due to proximity of frequencies of the structure with the rhythm of the stepping of crossing. This is the objective of this paper to understand if more complex geometries and different materials pose problems. After looking into several cases in Portugal and Spain and, describing their main geometric and mechanical characteristics, the most important frequencies of vibration and amplitude of oscillation for various loadings were analyzed. Caution should be exercised to not excite resonance conditions. A case study of one of these structures is analysed in detail for deterministic conditions. Cycling is not a problem.</p>
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Matsuzaki, Y., S. Saito, X. Zhu, R. Amsuss, K. Kakuyanagi, T. Shimooka, N. Mizuochi, K. Nemoto, W. J. Munro, and K. Semba. "Hybrid system composed of a superconducting flux qubit and an electron spin ensemble in diamond: A theoretical analysis." In 2013 Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR). IEEE, 2013. http://dx.doi.org/10.1109/cleopr.2013.6600224.
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GAUTHIER, RICHARD. "Derivation of the Inertial Mass m = Eo / c2 of an Electron Composed of a Circling Spin-½ Charged Photon." In Unified Field Mechanics II: Preliminary Formulations and Empirical Tests, 10th International Symposium Honouring Mathematical Physicist Jean-Pierre Vigier. WORLD SCIENTIFIC, 2017. http://dx.doi.org/10.1142/9789813232044_0009.
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Andrade, Sofía, Fabián Lamus, and Carlos Urazán. "Short Span Modular Bridges of Guadua Angustifolia by Self-Construction, a Sustainable Alternative." In Footbridge 2022 (Madrid): Creating Experience. Madrid, Spain: Asociación Española de Ingeniería Estructural, 2021. http://dx.doi.org/10.24904/footbridge2022.241.
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<p>This paper presents the evaluation of an alternative for the construction of short bridges with Guadua angustifolia Kunth as structural material. In the proposed model, the construction of bridges must be as easy as possible, in order to be developed by the community in a short time, taking advantage of existing guadua in the area. The bridges are composed by structural modules with a length of 5m, which can be precast composed of two planar trusses which are connected using horizontal members that support the board and give stability to the structure. The design was made considering that live loads will be applied inside the structure, on the bottom chord of the trusses. Load values specified by the Colombian Bridges Code have been used for the footbridge design. </p>
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Chung, Y. Y., and C. K. Sung. "Dynamic Behavior of the Band/Wheel Mechanical System of Industrial Band Saws." In ASME 1995 Design Engineering Technical Conferences collocated with the ASME 1995 15th International Computers in Engineering Conference and the ASME 1995 9th Annual Engineering Database Symposium. American Society of Mechanical Engineers, 1995. http://dx.doi.org/10.1115/detc1995-0465.
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Abstract This paper presents an analytical and experimental investigation on the dynamic behavior of the band/wheel mechanical system of an industrial metal-cutting band saws. In practice, as a result of the existence of the wheel tilt angle, a pair of roller bearings in which one of them is movable must be employed to twist the saw band perpendicular to the workpiece. Therefore, the saw band is modelled as a finite moving beam span that composes of three consecutive segments, in which the middle segment, that is, the cutting span, and the neighboring two segments may be assumed to be a straight and a twisted beams, respectively. The deformation of the band must satisfy the continuity condition at the connections between segments. The equations of motion governing the dynamic behavior of the beam span in axial, torsional and transverse directions are derived using mixed variational principle. The axial motion of the beam span couples linearly with its torsional motion. The dynamic responses and the natural frequencies of the beam are computed when parameters vary, such as the transport velocity of the saw band, band tension, wheel tilt angle, and the length of the cutting span. Finally, an experimental study is performed on an industrial band saw for the verification of the mathematical model and the predictive capability proposed in this investigation. Favorable comparisons between the analytical and experimental results are obtained.
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Trinh, Ngoc Thanh, Numa Joy Bertola, Enrique García, and Eugen Brühwiler. "Short span UHPFRC railway bridge in Switzerland - from design to implementation." In IABSE Symposium, Prague 2022: Challenges for Existing and Oncoming Structures. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2022. http://dx.doi.org/10.2749/prague.2022.0277.
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<p>This paper presents the design and construction of the Aiguillon railway bridge in Switzerland, one of the first railway bridges completely made of Ultra-High-Performance Fiber-Reinforced Cementitious Composite (UHPFRC). The length and width of the trough girder are respectively 6.6 m and 5.7 m. It is designed for a narrow-gauge track and two walkways. The trough is composed of two prefabricated elements in UHPFRC with steel reinforcement bars. These elements are first built in the plant and then are assembled on site by a longitudinal cast-in-place joint.</p><p>The challenges and the experiences in this project are discussed and analysed in view of future projects. Furthermore, the full-scale suitability tests to validate the joint between the two prefabricated elements are described. The test results of the structural resistance of the joints are in good agreement with analytical results.</p>
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Naranjo-Pérez, Javier, Carlos M. C. Renedo, Christian Gallegos-Calderón, José M. Goicolea, and Iván M. Díaz. "Exploring Concepts For UHPFRC Bending-Active Footbridges?" In Footbridge 2022 (Madrid): Creating Experience. Madrid, Spain: Asociación Española de Ingeniería Estructural, 2022. http://dx.doi.org/10.24904/footbridge2022.281.
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<p>This contribution describes two concepts for lightweight bending-active footbridges, and the corresponding experimental prototypes made of ultra-high-performance concrete (UHPFRC). The first prototype (bending- active bow-string concept) has a span length of 5.4 m and is composed of a thin UHPFRC prestressed slab, a UHPFRC deviator and stainless-steel tensioning cables. The second prototype (bending-active lenticular beam concept) has a span length of 6.2 m and is composed of two lateral lenticular beams and thin deck plates, all made of UHPFRC elements. In both prototypes, the upper structural members (the deck in the first one and the top chords of the lenticular beams in the second one) have been bent in the longitudinal direction to achieve the desired structural configuration. This kind of structure is referred to as bending-active in the literature; it combines the advantages of easy manufacturing (flat components) and lightweight (thin members) with an increased stiffness through the final curved geometry achieved through bending. The prototypes take advantage of the capacity of UHPFRC to resist traction and bending with microcracking in service conditions. To the authors’ knowledge, these experimental footbridges are the first application of UHPFRC for bending-active structural members, demonstrating the possibility to use this material as an alternative to timber or FRP.</p>
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Sánchez Quesada, Juan Carlos, E. Moliner, A. Romero, P. Galvín, and M. D. Martínez-Rodrigo. "Influence of track modelling in modal parameters of railway bridges composed by single-track adjacent decks." In VI ECCOMAS Young Investigators Conference. València: Editorial Universitat Politècnica de València, 2021. http://dx.doi.org/10.4995/yic2021.2021.12283.
Full textAbstract:
A significant number of railway bridges composed by simply-supported (SS) spans are present in existing railway lines. Special attention must be paid to short to medium span length structures, as they are prone to experience high vertical acceleration levels at the deck, due to their low weight and damping, compromising the travelling comfort and the structural integrity. The accurate prediction of the dynamic response of these bridges is a complex issue since it is affected by uncertain factors such as structural damping and complex interaction mechanisms such as vehicle-bridge, soil-structure or track-bridge interaction. Concerning track-bridge interaction, experimental evidences of a dynamic coupling exerted by the ballasted track between subsequent SS spans and also between structurally independent single-track twin adjacent decks have been reported in the literature [1, 2]. Nevertheless, this phenomenon is frequently disregarded due to the computational cost of models including the track and due to the uncertainties in the mechanical parameters that define the track system. The present work contributes to the study of the coupling effect exerted by the ballasted track between independent structures in railway bridges. With this purpose two 3D finite element (FE) track-bridge interaction models are implemented. The former includes a continuous representation of the track components meshing the sleepers, ballast and sub-ballast with solid FE. In the latter, the track is represented as a 2D discrete three-layer model where the mass, stiffness and damping of the components are concentrated at the sleepers locations. The numerical models are updated with experimental measurements performed on an existing railway bridge in a view to evaluate (i) the influence of the track continuity on the bridge modal parameters and on the train-induced vibrations; (ii) the adequacy of the implemented numerical models and (iii) the importance of the track-bridge interaction for an accurate prediction of the vertical acceleration levels under operating conditions.
Reports on the topic "Composers, spain"
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Kvalbein, Astrid. Wood or blood? Norges Musikkhøgskole, August 2018. http://dx.doi.org/10.22501/nmh-ar.481278.
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Wood or Blood? New scores and new sounds for voice and clarinet Astrid Kvalbein and Gjertrud Pedersen, Norwegian Academy of Music What is this thing called a score, and how do we relate to it as performers, in order to realize a musical work? This is the fundamental question of this exposition. As a duo we have related to scores in a variety of ways over the years: from the traditional reading and interpreting of sheet music of works by distant (some dead) composers, to learning new works in dialogue with living composers and to taking part in the creative processes from the commissioning of a work to its premiere and beyond. This reflective practice has triggered many questions: could the score for instance be conceptualized as a contract, in which some elements are negotiable and others are not? Where two equal parts, the performer(s) and the composer might have qualitatively different assignments on how to realize the music? Finally: might reflecting on such questions influence our interpretative practices? To shed light on these issues, we take as examples three works from our recent repertoire: Ragnhild Berstad’s Vevtråd (Weaving thread, 2010), Jan Martin Smørdal’s The Lesser Nighthawk (2012) and Lene Grenager’s Tre eller blod (Wood or blood, 2005). We will share – attempt to unfold – some of the experiences gained from working with this music, in close collaboration and dialogue with the composers. Observing the processes from a certain temporal distance, we see how our attitudes as a duo has developed over a longer span of time, into a more confident 'we'.
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Demchyna, Bohdan, and Yaroslav Shydlovskyi. Recommendations for Designing Wooden Arches on Metal-toothed Plates. Intellectual Archive, March 2021. http://dx.doi.org/10.32370/ia_2021_03_18.
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This paper presents the findings of the pilot studies and recommendations for designing of two-hinged wooden arches. The prototype models of wooden arches with the span of 6mand the rise of 1m were designed. The models had a rectangular cross-section of 180x40mm and a T-section of 180x40mm with a plywood plate with the thickness of 6 mm and the width of 500mm. The main objective of the T-section was to ensure the stability of the arch. Each arch was composed of six segments –boards joined by clamping plates. The bowstring truss including two inclined tie bars enables carrying asymmetric loads and provides in-plane stability of the arch. A methodology for laboratory testing of the prototype models of wooden arches subjected to different types of loads was developed. Two prototypes of wooden arches were tested with rectangular cross-sections and two T-section ones subjected to the loading across the span, and two prototypes subjected to the half-span loading. In total, eight arches were tested. Deflections of arches, cross-section deformations and arch thrust force were recorded. The arches were tested until failure. The results of testing revealed insufficient stability of the arches with rectangular cross-section in the horizontal plane. For the arches with T-section the whole arch rib was damaged, the in-plane stability was ensured by the T-section. The collapsing force of the T-section arch was about 1.3 times greater than the collapsing force of the rectangular section arches.
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SEGMENTED ASSEMBLY CONSTRUCTION FORMING METHOD WITHOUT BRACKETS OF SPATIAL CABLE-TRUSS STRUCTURE WITHOUT INNER RING CABLES. The Hong Kong Institute of Steel Construction, September 2022. http://dx.doi.org/10.18057/ijasc.2022.18.3.6.
Full textAbstract:
Spatial cable-truss structure without inner ring cables (SCSWIRC) is a new cable-truss tension structure (CTTS), the features of which are composed of a series of planar cable-truss frames interwoven with each other. Its anti-collapse capacity is better, but its construction forming is complex. The reasons are that the strut’s number and length will be enlarged with the span increase. Serious collision and winding of struts occur during construction due to SCSWIRC formed by a series of planar cable-truss frames interwoven with each other, which cause many difficulties in construction. According to the complex problem of construction forming, the segmented assembly construction forming method without brackets is proposed for SCSWIRC, and the basic idea of the proposed method is elaborated in detail. The SCSWIRC’s experimental model with a 6m is designed, and numerical simulation and experimental research were carried out on the experimental model. The experimental results show that the error range of the internal forces of cables and struts is 6.99%~11.58%, and displacement errors of node 1 and node 2 are 3.27mm and 3.81mm, respectively verifies the feasibility and correctness of the proposed method. Then the static and dynamic experiment is carried out based on the final formed model. The static and dynamic experiment verifies the feasibility of the final formed model, which further shows the rationality and correctness of the segmented assembly construction forming method without brackets.