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Stabilizzazione attiva di macchine per il sollevamento
No full textAccording to the International Labour Organization (ILO), every year 2.2 millions of people die or loose the working capability because of accidents or work-related diseases. A considerable percentage of these accidents occur during the execution of motion and transportation tasks and during human-machine interaction involving heavy duty machines.
The causes for this phenomenon are several and complex. For sure, the insufficient degree of interaction between the human operator and the guided machine is one of the major problems, as ILO underlines.
The main goal of this work is to develop mathematical models of earth moving machines for identifying, studying and realizing mechatronic systems that allow to guarantee the steady condition of the machine during its operative phase.Secondo l’Ufficio Internazionale del Lavoro (ILO) ogni anno 2.2 milioni di persone muoiono o non sono più in grado di lavorare a causa di incidenti o malattie legate al mondo del lavoro. Una consistente percentuale di questi incidenti avviene nei processi di movimentazione ed interazione tra macchine operatrici di grosse dimensioni ed operatori umani.
Le cause possono essere diverse e complesse. Sicuramente, come messo in evidenza dall’ILO, uno dei problemi principali va ricercato nel livello inadeguato di interazione tra la macchina operatrice e l’operatore che la governa.
Per far fronte a questo problema, l’obiettivo del presente lavoro di ricerca consiste nello sviluppare modelli matematici di una macchina per il sollevamento in modo da permettere di individuare, studiare e realizzare sistemi meccatronici in grado di garantirne la stabilità in fase operativa
State Aid, government spending and the virtue of loyalty
Full text linkIn some crucial sectors of EU policies, only a supranational model is able to deliver efficiency, transparency and equality of position between the different parties, in particular between the Member states and the EU institutions and between the Member states themselves. It could, surprisingly, also be conducive to the preservation of vital national interests and foster virtuous and fair economic policies. Further, it will be argued that a model of direct supranational administration does not need to equate to a model of full centralization. Differentiation and delegation can, and actually should, exist and function within clearly pre-established parameters. There are several areas which demonstrate and verify that it is sometimes worth leaving it to the EU. The chosen test case analysed here is the EU regulatory process on state aid control, an area extremely important for British economic policy. This chapter will be structured around two main themes. The first will try to sketch how the unique system of state aid control in Europe is providing an important tool to ensure a competitive level playing field between Member states and between undertakings; the second, is how such a system, properly employed, allows the development of coherent business and industrial policies. In particular, public spending channelled ‘through EU levees’ can be utilised to develop more responsible and eventually more socially useful economic practices
State Aid, government spending and the virtue of loyalty
Full text linkIn some crucial sectors of EU policies, only a supranational model is able to deliver efficiency, transparency and equality of position between the different parties, in particular between the Member states and the EU institutions and between the Member states themselves. It could, surprisingly, also be conducive to the preservation of vital national interests and foster virtuous and fair economic policies. Further, it will be argued that a model of direct supranational administration does not need to equate to a model of full centralization. Differentiation and delegation can, and actually should, exist and function within clearly pre-established parameters. There are several areas which demonstrate and verify that it is sometimes worth leaving it to the EU. The chosen test case analysed here is the EU regulatory process on state aid control, an area extremely important for British economic policy. This chapter will be structured around two main themes. The first will try to sketch how the unique system of state aid control in Europe is providing an important tool to ensure a competitive level playing field between Member states and between undertakings; the second, is how such a system, properly employed, allows the development of coherent business and industrial policies. In particular, public spending channelled ‘through EU levees’ can be utilised to develop more responsible and eventually more socially useful economic practices
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
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