1,721,075 research outputs found
Ragazzi difficili. Pedagogia interpretativa e linee di intervento
No full textAdottando la pedagogia fenomenologica quale quadro teoretico di riferimento, volume tratta il fenomeno della devianza minorile da un punto di vista educativo. Si tratta della nuova edizione di un volume uscito 20 anni fa. A distanza di oltre vent'anni dalla prima edizione, viene riproposto qui un testo che ha segnato un punto di svolta nel panorama pedagogico italiano tanto che da poter essere considerato un classico per la ricchezza e il rigore della prospettiva teoretica e metodologica proposta, risultando ancor oggi di grande attualità. A partire dall'esperienza vissuta da Piero Bertolini in qualità di direttore dell'Istituto Penale Minorile "Cesare Beccaria" di Milano, gli autori rivisitano il fenomeno del disadattamento e della devianza minorile entro un approccio esplicitamente pedagogico, proponendone un'interpretazione di matrice fenomenologica che mette il tema dei "ragazzi difficili" in una prospettiva oggettivamente e soggettivamente educativa, chiamando imperiosamente in causa la formazione degli educatori e riscattando il fare educazione da derive puramente esecutive.
A questa pietra miliare della letteratura pedagogica italiana i curatori hanno affiancato una riflessione sulla proposta metodologica e una valorizzazione del testo alla luce dei cambiamenti intercorsi nell'ambito del penale minorile che danno ancor più risalto all'attualità del testo originale che costituisce la pietra miliare dell'approccio pedagogico al fenomeno della devianza minoril
Prevenzione del riscaldo superficiale delle pere Conference mediante basso ossigeno e 1-MCP
No full text
Metodi e mezzi di lotta in postraccolta - Mezzi fisici
No full textTutte le strategie di difes postraccolta si basano sulla intergrazione dell abassa temperatura con altri mezzi fisici, biologici e chimici. Nella difesa postraccolta il mezzo fisico e segnatamente la bassa temperatura (conservazione refrigerata), assume un ruolo preponderante e per tale motivo si differenzia nettamente dalla difesa in campo in cui, in genere, risulta prevalente il mezzo chimico. La temperatura, la composizione gassososa e la U.R. costituiscono i mezzi più importanti per ottimizzare la conservazione dei prodotti ortofrutticoli, così come di molte derrate alimentari. La loro trattazione, ove possibile, sarà affrontata valutando separatamente fgli effetti sugli agenti patogeni e quelli sull'ospite. Per completezza saranno qui trattati, anche se brevemente, altri mezzi fisici poco diffusi o in fase avanzata di sperimentazione
Influence of Controlled Atmosphere and Dynamic Controlled Atmosphere on physiology, scald prevention and CA related disorders of ‘Abbè Fetel’ pears during long-term storage
No full textAbbé Fétel pears harvested at two maturity stages, were stored in regular controlled atmosphere (CA) (3 kPa O2 and 2 kPa CO2), ultra low-O2 (0.7 kPa O2 and 0.8 kPa CO2), dynamic controlled atmosphere (DCA) (0.4-0.7 kPa O2 and 0.8 kPa CO2) and conventional air storage. The fruit were kept in metal cabinets at -1°C and inspected after 90, 120 and 180 days. During storage, within each picking period, ethylene production by the fruit was in the following descending order, air storage > regular CA > Low-O2 > DCA. The reverse for flesh firmness and green colour of fruit skin. Overall fruit metabolism was markedly lower in the first picking during 6 months storage. Low-O2 and DCA prevented superficial scald development at the end of each storage period followed by shelf life. Air storage was characterized by a significant incidence of superficial scald that was reduced by regular CA. In these storage conditions a close relationship between superficial scald and increase of conjugated trienols during storage was detected, while a significantly lower content was found in Low-O2 and DCA. The lowest incidence of superficial scald was detected in the second picking. All fruit batches, except those stored in air storage, developed soft scald, a CA storage related disorder. Low-O2 and DCA promoted the highest incidence. At the end of shelf life all the fruit stored at the various conditions softened at different rates and fruit yellowing was sensibly delayed by low-O2 and DCA. No brown core disorder was detected
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
Metodi e mezzi di lotta in postraccolta - Mezzi chimici - Disinfettanti
No full textI disinfettanti sono utilizzati per ridurre le popolazioni di microroganismi presenti sulle macchine, sugli imballaggi, sui prodoti ortofrutticoli e nelle acque utilizzate per il loro lavaggio. Derivati del cloro, Ozono, Acido perossiacetic
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
Preventing ripening blockage in 1-MCP treated ‘Abate Fetel’ pears by storage temperature management
No full textMany cultivars of European pears, treated with 1-methylcyclopropene (1-MCP), undergo a blockage of the ripening process that does not resume during shelf life. We evaluated the possibility to use different storage temperatures to prevent ripening blockage by 1-MCP and at the same time inhibit superficial scald. Early and optimal harvested ‘Abate Fetel’ pears were treated with 320 nl L-1 1-MCP for 24 h at 2°C. Subsequently the fruits were stored in air at -1 and 1°C for 17 and 34 weeks, respectively. All fruits treated with 1-MCP, depending on storage type and length, had lower ethylene production, compared with untreated controls. While treated fruits kept at 1°C were still firm at the end of storage and ripened normally to eating quality, softening and peel yellowing were prevented in fruit kept at -1°C. Superficial scald damaged the fruits kept at -1°C but not those stored at 1°C. 1-MCP treatment fully prevented scald. During storage the concentration of α-farnesene
increased up to 17 weeks while conjugated trienols reached a peak after 34 weeks with large differences between -1 and 1°C. 1-MCP effectively reduced conjugated trienol accumulation at both storage temperatures. Results indicate the importance of raising the storage temperature from -1 to 1°C for reducing susceptibility to superficial scald, to avoid the ripening blockage by 1-MCP mainly in early picked fruit
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