Explicit models for flexural edge and interfacial waves in thin elastic plates

In the thesis explicit dual parabolic-elliptic models are constructed for the Konenkov flexural edge wave and the Stoneley-type flexural interfacial wave in case of thin linearly elastic plates. These waves do not appear in an explicit form in the original equations of motion within the framework of the classical Kirchhoff plate theory. The thesis is aimed to highlight the contribution of the edge and interfacial waves into the overall displacement field by deriving specialised equations oriented to aforementioned waves only. The proposed models consist of a parabolic equation governing the wave propagation along a plate edge or plate junction along with an elliptic equation over the interior describing decay in depth. In this case the parabolicity of the one-dimensional edge and interfacial equations supports flexural wave dispersion. The methodology presented in the thesis reveals a dual nature of edge and interfacial plate waves contrasting them to bulk-type wave propagating in thin elastic structures. The thesis tackles a number of important examples of the edge and interfacial wave propagation. First, it addresses the propagation of Konenkov flexural wave in an elastic isotropic plate under prescribed edge loading. For the latter, parabolic-elliptic explicit models were constructed and thoroughly investigated. A similar problem for a semi-infinite orthotropic plate resulted in a more general dual parabolic-elliptic model. Finally, an anal- ogous model was derived and analysed for two isotropic semi-infinite Kirchhoff plates under perfect contact conditions.EThOS - Electronic Theses Online ServiceGBUnited Kingdo

Citizen to Stay or Citizen to Go? Naturalization, Security, and Mobility of Migrants in Italy

https://doi.org/10.1080/15562948.2016.1208316We analyze the relation between naturalization, mobility, and security through 50 in-depth interviews with migrants of different origins living in two Italian regions. We show how migrants pursue naturalization both to protect themselves against bureaucracy and deportation and to move to a third country. The second migration is motivated by improving one's conditions, forced by the economic crisis, or completes the original migratory project once a strong passport is obtained. We argue that citizenship is not essentially linked to either stability or mobility and that mobility should be understood as neither exceptional nor always chosen

Trade unions and racial discrimination in the italian metalworking sector

Ritu Project - Fifth Framework Programme

Immigrazione e trasformazione sociale dell’Europa: una svolta epocale e le sue prospettive

A passagem de continente de emigração a continente de imigração foi para Europa uma mudança enorme. Desde 1945, chegaram na Europa ocidental dezenas de milhões de imigrantes, antes de outras regiões europeias, depois dos quatro cantos do mundo. Assim se verificou uma transformação social enorme: o nascimento (definitivo) de sociedades multi-nacionais, multi-raciais, multi-culturais, multi-religiosas. Durante um longo período, os governos e as empresas pretenderam que os imigrantes só fossem temporâneos, para poder dispor de uma massa de trabalhadores precários, pouco integrados, vulneráveis. Esta pretensão, que tem voltado com força nos últimos anos, encontrou a orgulhosa resistência das populações imigrantes, que criaram um enraizamento social cada vez maior. O mesmo vale para a pretensão similar dos poderes estabelecidos de someter as populações e os trabalhadores/trabalhadoras migrantes a uma explotação diferencial e a todo tipo de discriminações, que foram encaradas com lutas e rebeliões. Durante décadas, no fundo ameaçador da grande crise irresolvida de 2008, este conflito empiorou até transformar a “questão imigração” numa questão militar, que deve ser solucionada com as marinhas militares e as polícias de fronteiras. O artículo explica que há muita coisa em jogo: ou voltamos a um modelo de sociedade e estado baseado na mais brutal opressão “racial” e de classe, ou vamos para frente para uma sociedade definitivamente liberada de estas e outras formas de opressão. Pasar a ser un continente de inmigración después de haber sido un continente de emigración ha sido un cambio de época para Europa. Desde 1945 han llegado a Europa occidental decenas de millones de inmigrantes, primero a partir de otras regiones europea y después de todos los rincones del mundo. Se ha producido así una enorme transformación social: el nacimiento (definitivo) de sociedades multi-nacionales, multi-raciales, multi-culturales, multi-religiosas. Durante una larga temporada, los gobiernos y las empresas han pretendido que los inmigrantes fueran temporáneos, para tener a disposición una masa de trabajadores precarios, poco integrados y vulnerables. Esta pretensión, reiterada en los últimos años, ha encontrado la orgullosa resistencia de las poblaciones inmigrantes, que han creado un arraigo social cada vez más amplio. Lo mismo vale para la pretensión de los poderes constituidos de someter poblaciones y trabajadores/trabajadoras inmigrantes a una explotación diferencial y a cualquier tipo de discriminación, lo que vio una larga sucesión de luchas y levantamientos. Durante las décadas, en el fundo amenazador de la gran crisis irresuelta de 2008, este conflicto se ha intensificado hasta transformar la “cuestión inmigración” en una cuestión militar, que debe ser resuelta por las marinas militares y las policías de frontera. El articulo explica que en este momento hay mucho en juego: o el regreso a un modelo de sociedad y de estado fundado sobre la más brutal opresión “racial” y de clase, o el camino hacia frente para una sociedad definitivamente libertada de estas y otras formas de opresión. The shift from continent of emigration to continent of immigration marks the change of an era for Europe. Since 1945, tens of millions of inmigrants have reached Western Europe, at first from other European regions, then from every corner of the world. Thus, a remarkable social transformation took place: the (ultimate) birth of multi-national, multi-racial, multi-cultural, multi-religious societies. For a long time, governments and companies demanded that immigrants be only temporary, so as to have a mass of precarious, barely integrated, vulnerable workers. Such demand, strongly restated over the past few years, was fiercely opposed by immigrant populations, who responded with a wider social rooting. The same applies to the similar demand by the powers that be to impose on immigrants a differential exploitation and any sort of discrimination, opposed by a long chain of struggles and upheaval. Over the course of decades, set on the background of the unsolved great crisis of 2008, this conflict has escalated, until the “question of immigration” has turned into a military question, to be fixed with the intervention of the navy and border police. This paper states that the stakes are now too high: either we go back to a model of society and state based on brutal “racial” and class oppression, or we go towards a society finally freed from any kind of oppression

L'immigrazione straniera nella provincia di Belluno.

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