1,721,963 research outputs found
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
Pharmacological treatment strategies for emotional lability in adults with attention-deficit/hyperactivity disorder: focus on the Conners’ Adult ADHD Rating Scales
No full textAttention-deficit/hyperactivity disorder (ADHD) is a neurodevelopmental condition starting in childhood and presenting with symptoms of inattention and impulsivity/hyperactivity which may severely impair an individual's functioning. Emotional lability (EL) is a symptom dimension characterized by rapidly shifting mood and affect which can be found in several mental disorders, including ADHD. EL is associated with more severe ADHD symptoms, more frequent comorbid disorders, and adverse outcomes. The present narrative review aimed to summarize the efficacy of pharmacological treatments on EL measured using the Conners' Adult ADHD Rating Scales (CAARS) - Impulsivity/Emotional Lability subscale in adults with ADHD. Evidence has shown inconsistent results. Future research should standardize outcome measures and investigate the role of non-pharmacological treatment
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
Uso do ácido poli-L-láctico como restaurador de volume facial
No full textINTRODUÇÃO: O ácido poli-L-láctico é usado na Europa, para fins cosméticos, desde 1999, e nos Estados Unidos, para tratamento de lipoatrofia pelo HIV, desde 2004. Este trabalho tem por objetivo apresentar nossa experiência com o emprego do ácido poli-L-láctico para uso cosmético, visando restaurar a perda de volume facial decorrente do processo de envelhecimento. MÉTODO: Doze pacientes foram submetidos ao tratamento no período de 2006 a 2012. O produto foi reconstituído em 5 ml de água destilada e, no momento da injeção, foram acrescentados 2 ml de lidocaína a 2% com adrenalina 1:200.000. O tratamento foi individualizado de acordo com o volume e o contorno faciais dos pacientes. Os resultados foram analisados por meio de fotografias pré e pós-procedimento, e de acordo com a percepção do médico e dos pacientes. RESULTADOS: Todos os pacientes mostraram-se satisfeitos com os resultados obtidos. Foram observados 4 casos de equimose no local da injeção, e 1 paciente apresentou nódulos na região periorbitária. CONCLUSÕES: O ácido poli-L-láctico pode ser utilizado como mais uma ferramenta para restaurar, corrigir e amenizar as deformidades faciais
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
Caracterització físico-química i biològica de stents d'àcid poli-l-làctic amb capacitat d'alliberament de fàrmac.
No full textEl treball consistirà en la impressió, mitjançant la tecnologia d'impressió 3D, de stents d'àcid poli-l-làctic carregats amb àcid acetilsalicílic per tal de caracteritzar l'alliberament del fàrmac així com avaluar la trombogenicitat i citotoxicitat dels stents mitjançant cèl·lules endotelials i cèl·lules musculars llises
Porównanie właściwości termicznych, strukturalnych oraz morfologii mikrosfer z poli(l-laktydu) i z poli(l-laktydu)/hydroksyapatytu przeznaczonych do procesu spiekania laserowego
No full textA comparison of poly(l-lactide) (PLLA) and poly(l-lactide)/hydroxyapatite (PLLA/HAp) biocomposite microspheres fabricated by emulsion solvent evaporation technique designed for laser sintering (LS) applications is presented. Key properties such as thermal and structural as well as geometry, size distribution and powder flowability, which are crucial for this technique, are characterized to validate the applicability of microspheres for LS. The biocomposite microspheres turns out to be more suitable for the LS process than PLLA due to the higher thermal stability, broader sintering window and higher powder flowability.Porównano właściwości mikrosfer z poli(l-laktydu) (PLLA) i z biokompozytu poli(l-laktyd)/ hydroksyapatyt (PLLA/HAp), przygotowanych metodą emulsyjną z odparowaniem rozpuszczalnika, przeznaczonych do procesu spiekania laserowego (LS). W celu weryfikacji przydatności mikrosfer do LS scharakteryzowano kluczowe dla tej techniki właściwości: termiczne i strukturalne oraz geometrię, rozkład wymiarów i sypkość proszku. Wykazano, iż mikrosfery biokompozytowe wykazują lepsze właściwości predestynujące je do przetwarzania metodą LS niż mikrosfery PLLA, w tym większą stabilność termiczną, szersze okno parametrów spiekania i większą sypkość proszku
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