Insegnamento della storia e/\ue8 Public History

At the root of both the success of public history and the difficulties of history as a school subject is the same phenomenon of transformation of history, of its function and meaning in the society. School history no longer fulfills the task of forming collective identities, which are increasingly uncertain and supernational. Hence, at the same time, the impossibility to teach history according to traditional methods and canons, and the strong demand for history from non\u2010specialized public to which public history tries to give an answer

Il Friuli nella storiografia veneta tra Otto e Novecento

L’articolo analizza il tema del dominio veneto nel Friuli mettendo a confronto la storiografia veneta e friulana tra 1850 e 1950 circa. In questo arco di tempo le diverse posizioni storiografiche si sono incrociate con i temi dell’italianità del territorio friulano e dell’irredentismo e con le ambizioni adriatiche dell’Italia post-bellica. Solo dagli anni Venti (con le opere di Pier Silverio Leicht e quindi di Pio Paschini e Roberto Cessi) si assisterà a un rinnovamento storiografico

Anthos: la terra senza frutti, gli uomini senza cibo

Sin resume

STUDENT CHARACTERISTICS THAT PREDICT PERSISTENCE AND PERFORMANCE IN ONLINE COURSES AND THE FACE-TO-FACE EQUIVALENTS AT A FOUR-YEAR PRIVATE NORTHEASTERN UNIVERSITY

Attrition in online courses is of growing concern in higher education. Many researchers and practitioners are concerned about student persistence (course completion) and performance (completion of a course with a grade of C or better) in online courses. This study investigated the undergraduate student characteristics that predict student persistence and performance in online courses and the face-to-face equivalents at a four-year private northeastern university. The sample consists of undergraduate students (42,280 observations, 25,167 unduplicated student headcount, which is the actual number of individual students in the population) who enrolled in courses, regardless of delivery format, from fall 2002 to spring 2013. This study attempted to identify the undergraduate student characteristics that predict student persistence and performance in online courses and the face-to-face equivalents while controlling for all available institutional variables such as demographics (age, gender, race/ethnicity, and financial aid) and academic performance (grade point average prior to enrollment at the institution, concurrent enrollment programs, and math and verbal scholastic aptitude test scores). The student characteristics were examined using multilevel modeling. The first level of analysis was the individual student and the second level of analysis was the academic school/college in which the student was enrolled. The findings of this study were mixed. No cause and effect claims were made. Aligning with much of the literature in this area, the results of this study consistently demonstrate that GPA prior to enrollment at the institution predicts student success in both online courses and the face-to-face equivalents. Students enrolled in the College of Engineering and Computer Science and the School of Management were more likely to succeed (persist and perform) in both online courses and the face-to-face equivalent. Consistently those students who identified their race/ethnicity as a minority, were less likely to succeed in online courses and the face-to-face equivalents

EXISTENCIA DE ATRATORES PARA UM MODELO DE VIGA GENERALIZADO

Neste trabalho consideramos um modelo de viga nao linear abstrato sobre um espaço de Hilbert separável. Sob condiçoes adequadas, mostramos que o sistema dinamico gerado pelo modelo é dissipativo e possui um atrator global de dimensao fractal finita. A questao principal do trabalho é o comportamento assintótico das soluçoes do problema para o caso em que as forças inerciais sao pequenas respeito das forças de resistencia do meio. Esta hipotese leva, formalmente, a um problema de primeira ordem. Entao, provamos que, num certo sentido, os atratores globais destes dois sistemas estao “perto” um do outro. Estimativas de decaimento exponencial para a primeira e segunda derivadas da soluçao sao obtidas

Chemical characterization of inks for inkjet decoration of ceramic tiles

The inkjet decoration of ceramic tiles has become the most widespread decoration technology in this field. It is also a technology in constant evolution, in order to obtain: better color performances, inks with improved stability and rheological properties, lower production costs, etc. Inks formulation is one of the most critical point because polluting emissions during firing, rheological parameters, jettability and stability of inks depend on inks formulation itself. This study focuses on the characterization of inks now in commerce, to understand their thermal behavior, chemical composition, polluting emissions during firing and rheological properties. We performed TG-DTA analysis, FTIR spectrometry, X-Ray fluorescence, and we are testing GC-MS and HPLC methodologies, on both inks and dispersing agents. First data from TG-DTA seem to underline different thermal behaviors between different dispersing agents. By cross-checking these data with FTIR results, we divided our samples in 5 groups, depending on dispersing agents class: paraffin oil, esters, paraffin oil added with esters, tripropylene glycol n-butyl ether (TpnB), water added with paraffin oil. From X-ray fluorescence on liquid inks and by comparison with literature [3,4], we recognized the chemical composition of coloring phases of inks. Our study is now focusing on testing GC-MS and HPLC methodologies to characterize polluting emissions, collected by firing a selected quantity of samples in a tubular kiln that simulates industrial processes. The following step will be the cross-check of data coming from TG-DTA, rheological characterization, that will be carried out by ISTEC-CNR in Faenza (Bologna), and chromatographies. The final phase of this project will focus on a possible re-formulation of inks, to reach even better properties and decrease potential polluting emissions during firing processes