1,723,878 research outputs found
Terapia intensiva neonatale nel cucciolo : risultati preliminari
No full textLo studio riporta i risultati preliminari della terapia intensiva neonatale in 11 cuccioli (9 cani e 2 gatti) con patologie neonatali, ricoverati in tempi diversi dalla nascita fino a 20 giorni e per una durata da 2 ore a 15 giorni. Le principali patologie riscontrate sono risultate: malformazioni genetiche (4 palatoschisi, 1 idrocefalo) ed alterazioni del peso corporeo (4 casi). La terapia, consistente prevalentemente nel controllo termico ed alimentare e nella fluido-terapia, ha avuto esito positivo in 3/11 neonati
Il trattamento non autorizzato dei dati personali dell'avvocato: quale danno risarcibile? Riflessioni a partire dalla giurisprudenza europea
No full textAnalisi della disciplina relativa al trattamento dei dati personali, partendo dalla recente giurisprudenza europea. Specifico focus sulla natura del danno risarcibile
Biometano per generazione elettrica o come combustibile per autotrazione
No full textL’articolo propone
un confronto preliminare tra i due possibili
utilizzi del biometano tenendo conto
dei vincoli posti dalle recenti indicazioni
della Direttiva Europea per l’incentivazione
delle fonti rinnovabili
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
Temperature-dependent regulation of the lpxT gene in Escherichia coli and Pseudomonas aeruginosa
No full textThe LpxT protein modifies the outer membrane of Gram negative bacteria by transferring a phosphate group from undecaprenyl-pyrophosphate to the lipid A moiety of the lipopolysaccharide. Recently, we found that the expression of the lpxT gene of Pseudomonas aeruginosa (Pa) is post-transcriptionally regulated by an RNA thermometer (RNAT). An RNAT is a thermo-labile secondary structure that entraps the mRNA Translation Initiation Region (TIR) at low temperature, thus inhibiting ribosome binding. As temperature increases, the RNAT unfolds allowing mRNA translation. The bioinformatic analysis of the Escherichia coli (Ec) lpxT 5’-untranslated region (5’-UTR) shows that the TIR may be sequestered in a stem-loop structure with features typically found in some RNATs, thus suggesting a conserved regulatory strategy for Ec and Pa lpxT. On the other hand, Ec lpxT mRNA was claimed to be a direct target of the sRNA MicA, which was proposed to pair ca. 90 nt upstream of the lpxT AUG and negatively regulate lpxT expression. To assess whether Ec lpxT is regulated by temperature and/or MicA, we have assayed the expression of different lpxT-GFP translational fusions in the BW25113 strain and in its isogenic ∆micA derivative at 28° and 42°C. Moreover, we analysed in the same strains and conditions the transcription profile of the chromosomal lpxT locus. We found that i) the lpxT transcript starts 29 nt upstream of the ORF start codon; ii) the presence of the physiological lpxT 5’-UTR confers thermo-dependent expression to the reporter construct; ii) lpxT-GFP transcripts with a longer 5’-UTR, encompassing the putative MicA interaction site, are poorly expressed at any temperature; iii) MicA does not affect the expression of the reporter constructs. On the whole our results suggest that Ec lpxT may be regulated by a new RNAT. Experiments are in progress in our lab to characterize the Ec lpxT putative RNAT structure and function
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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