1,721,119 research outputs found
Utilità dell'anamnesi nello studio dei lattanti con infezioni urinarie a rischio di uropatie malformative
No full textThe incidence of clinical symptoms and of anamnestic records were evaluated in 34 healthy controls and in 75 infants, under 18 months of age, consewcutively admitted to the pediatric clinic for symptomatic urinary tract infections (UTI); in 40 of them a urinary tract malformation (UTM) was demonstrated while in the other 35 the UTIs were uncomplicated.
Clinical symptoms were significantly more frequent in patients than in controls.
No differences in all parameters considered were found between the two groups of patients, except for the age at first radiological investigations which appeared significantly lower either in all children with UTM, or only in males.
Children with UTM also appear to have had more symptoms suggesting a compromised physical condition.
Our results, which should be confirmed by a prospective study, suggest that the use of detailed and specifically oriented chart in order to take a precise clinical history with a quantification of the more important symptoms could contribute, with the results of bioumoral indexes, to selct the children with symptomatic UTM at ahigher risk for UTM in whom early radiological investigations have to be made.
A prospective study seems to be justified
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
Hierarchical diagnosis strategy fora n auto motive electrical power generation system
No full textThis paper presents a hierarchical signal knowledge-based
approach to fault detection and isolation (FDI) for an
automotive electrical power generation system. The system we
deal with is characterized by two main components: an
alternator and a belt and it is subjected to constraints on the
available measures (the alternator current is not available) and
the computational power. The proposed approach is able to
detect and isolate different faults combining, into a rule based
logic, information carried by the measured signals. The
hierarchical feature of the proposed diagnostic logic makes the
implementation computationally efficient allowing the
diagnosis algorithm to run in real time
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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