1,720,977 research outputs found
Le opinioni sulle conseguenze psicosociali della schizofrenia e della depressione: uno studio comparativo in un campione di studenti di scuola superiore
No full textAIMS:
Description of students' opinions about schizophrenia and depression.
METHODS:
The study was carried out on a sample of 445 secondary school students, randomly allocated to a "schizophrenia" or a "depression" group (N = 221 and N = 224, respectively). Each respondent was asked to read a case-vignette describing a case of schizophrenia or depression, and then to fill the Questionnaire on the Opinions about Mental Illness--General Population's version (QO-GP).
RESULTS:
35% of students in "schizophrenia" group vs. 85% in "depression" group attributed a correct diagnosis to case-vignette. 19% of students in the "schizophrenia" group vs. 39% in the "depression" group believed that these mental disorders can recover. Affective and civil rights were more frequently acknowledged to patients with depression than to those with schizophrenia. In both groups, the majority of students stated that mentally ill patients were unpredictable and socially dangerous. Students who reported TV stories on people with mentally ill were more frequently convinced on their unpredictability and social dangerousness.
CONCLUSIONS:
These results outline the need to: a) plan educational campaigns for students on mental disorders; b) alert media professionals on the impact that the way they present crimes committed by mentally ill patients may have on general population
Enhanced methods to interpret microgravity anomalies in urban areas
No full textMicrogravity surveys in urban areas require very careful data acquisition and processing. Being typical anomalies of low amplitude, enhanced and stable methods of filtering and interpretation are needed to preserve the source-related information content. A microgravity survey was carried out in the town of Cardito, Italy, along a profile crossing a known cavity. On these data we tested the procedures of local filtering, based on the wavelet transform, and of stable interpretation, based on multiscale methods.
To compute the Bouguer anomaly we had particular care in the removal of gravity effects of the buildings close to the measurement stations. The buildings were modelled in detail by using prismatic models.
A local filtering based on the Discrete Wavelet Transform (DWT) was used to denoise the data near the cavity and proved to be more effective than classic wavenumber filtering in the Fourier domain, not altering significantly the gradients of the anomaly. Multiscale methods conjugate stability and resolution in an optimal way. High resolution methods, such as the Multiridge Euler Deconvolution and the Depth from Extreme Points (DEXP) yield consistent results about the depth and the shape of the source, in good agreement with the actual location and shape of the cavity
Indagini microgravimetriche per l'individuazione di cavità sotterranee in ambienti urbani: i casi di Cardito (NA) e Lesina Marina (FG)
No full textIn questo lavoro presentiamo i risultati di due indagini microgravimetriche condotte per l’individuazione di cavità sepolte nelle aree urbane di Cardito (NA) e di Lesina Marina (FG). Descriviamo le modalità di acquisizione, le operazioni di residuazione del segnale e le tecniche di analisi ed interpretazione dei dati.
Nel caso di Cardito l'indagine, svolta al di sopra di una cavità nota, ha avuto lo scopo di testare l’efficacia delle procedure utilizzate per la residuazione del segnale gravimetrico misurato, verificandone l’efficienza tramite l’interpretazione dei dati con tecniche multiscala. Nel caso di Lesina Marina l’esplorazione è stata eseguita per individuare presunte cavità non note nella formazione gessosa e nella copertura sabbiosa del sottosuolo in prossimità del Canale di Acquarotta, dove fenomeni di erosione carsica potrebbero implicare problemi di stabilità per strutture sportive e palazzi ad uso civile.
Per entrambe le indagini sono state utilizzate le stesse procedure di acquisizione e le stesse strumentazioni: l’autogravimetro Scintrex CG5 ed il livello autolivellante Wild Na2, corredato di micrometro a lamina piano-parallela.
Per il calcolo dell’anomalia di Bouguer è stata posta particolare cura nella rimozione dell’effetto gravimetrico di numerosi edifici disposti nell’intorno dei luoghi esplorati. Questi effetti sono stati calcolati approssimando l'intero volume dei manufatti più lontani con prismi aventi densità pari al valore della media pesata tra i corpi murari e i vuoti. Gli edifici più vicini sono stati, invece, modellizzati in maggior dettaglio con modelli prismatici rappresentativi delle principali strutture murarie che li costituiscono.
Al segnale residuato sono state applicate tecniche di analisi ed interpretazione dei dati basate sullo studio multiscala del campo gravitazionale. Sono state, quindi, studiate sezioni verticali del campo, generate mediante continuazione verso l’alto dei dati, ottenendo informazioni sulla posizione e il tipo di sorgente di anomalia presente in profondità. In entrambi i casi le stime di profondità ed indice strutturale sono in ottimo accordo con la reale ubicazione e forma delle sorgenti di anomalia
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
Microgravimetria in ambito urbano: il caso di Cardito (Na)
No full textLe cavità sotterranee in ambito urbano possono produrre dissesti, fenomeni di crollo e movimenti di subsidenza capaci di provocare gravi danneggiamenti alla rete dei sottoservizi e alla popolazione locale. L’esplorazione del sottosuolo con metodologie geofisiche può essere molto utile per ridurre il rischio legato a tali fenomeni. Lo studio del campo microgravimetrico risulta senz’altro tra le tecniche più promettenti in aree urbanizzate, ricche di intense fonti di disturbo per quasi tutti i metodi geofisici. In questo lavoro presentiamo i risultati di un’indagine microgravimetrica svolta presso il comune di Cardito (NA). L’indagine, condotta al di sopra di una cavità nota, ha avuto lo scopo di testare l’efficacia delle procedure utilizzate per la residuazione del segnale gravimetrico misurato, verificandone l’efficacia tramite l’interpretazione dei dati con tecniche multiscal
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
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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