1,720,993 research outputs found
Low-magnetostriction Co-p Layers With Mixed Crystalline-amorphous Structure Prepared By Electrochemical Deposition
No full textA Co-P alloy having a mixed amorphous/crystalline structure was produced by electrochemical deposition. X-ray spectra, differential scanning calorimetry and scanning electron microscopy were performed in order to obtain the structural characterization. A comparison of the new kind of material with known amorphous and crystalline alloys was also made on the basis of initial magnetization curves, electrical resistivity and standing magnetoelastic wave amplitudes. Differential scanning calorimetry reveals that the amorphous component in the mixed structure sample does not include one of the two disordered phases that are present in the completely amorphous material. The measured physical properties are explained by means of the structural characteristics and the related phosphorus content. In the new type of material a very low magnetostriction value is predicted and its effect on the magnetoelastic wave amplitude is demonstrated
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
Spazi verdi fra città e campagna: un percorso storico a Modena e nel suo territorio
No full textSi prendono in considerazione le periferie delle città italiane, fascie che si è sviluppata a macchia d'olio nella seconda metà del Novecento, dapprima governate quasi unicamente dalla speculazione edilizia, poi pianificate più razionalmente. Nonostante l'evoluzione, la periferia italiana ha conservato i connotati di un'area fluida, indefinita, spesso anonima, priva di fulcri di socializzazione diversi dall'ipermercato e dal centro commerciale. Oggi la periferia richiede gli interventi di valorizzazione che alcuni decenni fa sono stati dedicati, almeno in alcune città, in particolare quelle dell'Emilia Romagna, ai centri storici. Diversamente da questi ultimi è più difficile individuare elementi di identificazione nei quartieri più recenti: tuttavia, chi pianifica nuovi quartieri o interviene sull'esistente deve soprattutto mettere in luce le radici imprescindibili dei luoghi, le stratificazioni storiche che quasi sempre esistono, anche se non evidenti, attualizzandole, valorizzandone le potenzialità e trasformandole in occasioni di socializzazione e di identificazione. Il tentativo di rivitalizzare la periferia può passare attraverso la valorizzazione degli spazi verdi: parchi pubblici urbani e suburbani, giardini storici e di origine recente, di grandi dimensioni o di pochi metri quadrati. Si è scelto di esaminare come una città di medie dimensioni, Modena, caratterizzata da una qualità della vita abbastanza elevata, distinta da una discreta efficienza della pubblica amministrazione, stia rispondendo a queste esigenze, per verificare se possa costituire un modello per le innumerevoli città medie italiane
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
Il recupero dei borghi abbandonati nell'Appennino Tosco-Romagnolo.
No full textIl contributo prende in considerazione il tema dei centri minori in area appenninica, mettendo a confronto quattro diversi casi di intervento di recupero e riabilitazione funzionale nell'Appennino Tosco-romagnolo
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