1,720,987 research outputs found
Presentazione del volume di G. Passarelli e D. Tuorto "La Lega di Salvini, estrema destra di governo"
No full textDiscussione in occasione della presentazione del volume di G. Passarelli e D. Tuorto "la Lega di Salvini Estrema destra di govern
Lega & Padania. Storia e luoghi delle camicie verdi
No full textIl volume riporta i risultati di una ricerca empirica sull'evoluzione del voto per la Lega Nord. I tre capitoli affrontano tematiche differenti adottando approcci e utilizzando fonti dati diversificati. Il primo capitolo ricostruisce la vicende dell'origine della Lega Nord a partire dall'insorgere delle leghe autonomiste negli anni '80. Il secondo capitolo studia il radicamento territoriale del partito. Il terzo capitolo sintetizza gli esiti di una rilevazione sui tre livelli del partito: a) la classe dirigente e gli eletti a livello locale (interviste a consiglieri regionali e provinciali); b) gli iscritti (interviste a militanti); c) gli elettori (dati di survey, trend 1994-2008)
Misura e valutazione dell’esposizione ai campi magnetici nei locali ad uso scolastico
No full textQuesto lavoro illustra i risultati delle misure effettuate per valutare l’esposizione umana ai campi magnetici a bassa frequenza in locali ad uso scolastico dell’istituto “Alberghetti” di Imola. Alla luce della Legge-quadro n.36 del 22 febbraio 2001, infatti, gli ambienti scolastici vanno considerati tra i luoghi in cui limitare l’esposizione ai campi elettromagnetici al di sotto di valori fissati a “titolo di misura di cautela per la protezione da possibili effetti a lungo termine”
Making chemical nomenclature fun: a structured bingo game for learning inorganic compounds name
No full textChemical nomenclature is probably one of the less amusing learning subjects of any chemical courses. Moreover, in facing both traditional and IUPAC naming of compounds, students must overcome several cognitive difficulties. In particular traditional nomenclature supposes an acquaintance with chemical reactivity and oxidation number, both helping in the reconstruction of the compounds name. In this communication we present an activity, based on the popular tombola game, for the learning of traditional nomenclature. Bingo game has already been proposed to enhance the memorization of chemical name but, in our didactic act, the game is a part of a more structured learning process, mainly conducted using a cooperative approach. Initially the students, in groups, are asked to make a roughly classification of a large number of compounds. With the help of supplemental material and of intermittent explanations of the teachers the students start to construct a rational frame where compounds take place. After such a work is concluded the game can start. Tombola cards were prepared at different levels of difficulties and are organized with the purpose of stimulating different cognitive representation of compounds (similarity, oxidation number, cation position in the periodic table, etc). The result of this approach was very satisfying, as attested by a specific evaluation on the topic and to the very strong emotional participation of the student to each step of the activit
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
Assessment of Gas-Fluidized Beds Mixing and Hydrodynamics by Zirconia Sensors
No full textGas-mixing and bed hydrodynamics associated with the rise of isolated bubbles in gas-fluidized beds of two granular solids are investigated by means of a novel technique. These diagnostics consist of an array of miniaturized zirconia-based oxygen sensors located along the axis of a hot (1123 K) incipiently fluidized bed, in which isolated bubbles of a tracer gas (nitrogen) are injected. Time-resolved oxygen concentrations and relative pressures are recorded at several levels along the bed. It is shown how the response of the sensors array can be related to the concurrent effects of bubble motion, bubble-emulsion phase, mass transfer and interstitial gas flow in the emulsion phase, combined with each other to give rise to the propagation of two perturbations to the basal value of oxygen concentration. Analysis of time-resolved oxygen concentration profiles enables the assessment of: (a) the bubble rise velocity; (b) the gas velocity associated with the interstitial flow; and (c) the interphase bubble-emulsion phase, mass-transfer rate and coefficient. Analysis of the response of sensors located in the splash zone of the fluidization column provides indirect inference of the hydrodynamic patterns associated with bubble bursting at the surface of the bed
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
Evaluation rubrics: a tool for laboratory activities assessment in chemistry and physics
No full textRubrics are a powerful tool for the evaluation of complex activities or authentic tasks. In these situations the final score is best represented when the task is subdivided in well defined portions, each of them describing the elements concurring to the overall performance. In this communication a set of evaluation rubrics for the assessment of several laboratory activities is presented, together with a rubric for the evaluation of the final report of an experimental work. This latter rubric is centered on the problem/hypothesis couple: the students are firstly encouraged to formulate a “problem”, arising from the observation of a physical phenomenon. After the “problem” has been defined, the students must find out an interpretative “hypothesis” to be tested by the experimental process. Such an approach agrees with the indication of the Rocard Report on Education Science to increase interest and attainments in science. The introduction to the use of rubrics was presented to the students by means of a cooperative activity, centered on the examination of laboratory reports of different qualitative levels made by students of previous course years. The described strategy has been practiced both at university and in a secondary school (ITIS). A first approach has been also attempted within the “Physics and Chemistry Laboratory” at LST. The extensive use of report rubrics for the whole period of the courses has increased both the understanding of how a scientific report should be organized and the student ability in effective written skills
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