1,720,954 research outputs found
The relationship between sleep disturbances and fatigue in multiple sclerosis
Get PDFopenLa sclerosi multipla è una malattia infiammatoria e neurodegenerativa del SNC di natura autoimmune caratterizzata da un'interazione tra fattori ambientali e fattori genetici. Le lesioni della SM riguardano la sostanza bianca dei neuroni essendo la mielina il principale bersaglio. La fatica è uno dei sintomi della SM più comune e disabilitante fra i pazienti affetti. Tale sintomo è stato definito come una sensazione di fatica e di stanchezza molto diversa dalla sensazione di tristezza e di debolezza. Il presente elaborato prende in considerazione prevalentemente la relazione tra disturbi del sonno e fatica nei pazienti con SM. Infatti si è visto che la maggior parte dei pazienti con SM che presentano anche fatica lamentano un peggioramento della qualità del sonno che può sfociare nei disturbi del sonno. Gli studi che hanno analizzato tale relazione hanno evidenziato una correlazione tra la presenza della fatica e i disturbi del sonno nella sclerosi multipla
The elderly person's loneliness and psychological well-being on the self-perception of cognitive efficiency
No full textreservedLa solitudine e il benessere psicologico auto-percepito sono generalmente considerati due fattori implicati nel funzionamento cognitivo e nell’auto-percezione delle proprie capacità cognitive.
Tuttavia, pochi studi hanno preso in considerazione un possibile effetto modulatore diretto di questi fattori psicologici, la solitudine e il benessere psicologico auto-percepito, sull’efficienza cognitiva intesa come la differenza tra prestazione cognitiva e auto-percezione di declino cognitivo negli anziani.
A partire da tali assunti, il presente studio si pone lo scopo di indagare la tendenza degli anziani sani di sovrastimare oppure sottostimare la propria efficienza cognitiva in funzione del grado di solitudine auto-percepito e del benessere psicologico auto-percepito; inoltre, l’ultimo scopo è di osservare le differenze di questa possibile tendenza in tarda età, ossia a partire dai 65 anni.
I risultati evidenziano che le persone anziane tendono a sottostimare le proprie capacità cognitive tanto più sono giovani e quanto più presentano un maggiore senso di solitudine; viceversa, le persone tendono a sovrastimare le proprie capacità cognitive tanto più sono anziani e quanto meno si sentono soli. Il benessere psicologico auto-percepito non risulta ad essere un predittore significativo dell’efficienza cognitiva.
È importante adottare un approccio multidimensionale alla ricerca sull’invecchiamento, che consideri in modo integrato i diversi fattori (biologici, psicologici e sociali) che possono contribuire al benessere, qualità della vita e dignità degli anziani
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Get PDF“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
Get PDFWe 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
Get PDFWe 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
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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