1,721,003 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
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
Moldagem convencional versus escaneamento: uma comparação fundamentada em literatura
Full text linkThe present study aimed to make a comparison between conventional impression and intraoral scanning, establishing indications, contraindications, advantages and disadvantages for both the methods. The comparison criteria sought to elucidate the uncertainties of professionals regarding adhering to the new technology, achieving rehabilitation with greater dexterity more accurate planning or choose to continue with the convencional molding method. The results found in the analyzed literature showed that intraoral scanning has certain disadvantages, with the high cost as the main one, however, it is able to obtain satisfactory results clinically and even stand out from the primordial method. Thus, it can be concluded that intraoral scanning produces results with greater success.O presente trabalho teve como objetivo realizar uma comparação entre a moldagem convencional e o escaneamento intraoral, estabelecendo indicações, contraindicações, vantagens e desvantagens de ambos os métodos. Os critérios de comparação buscaram elucidar as incertezas dos profissionais quanto a aderir à nova tecnologia, alcançando um trabalho reabilitador com maior destreza e um planejamento mais preciso ou a opção em continuar com o método convencional de moldagem. Os resultados encontrados na literatura analisada mostraram que o escaneamento intraoral possui certas desvantagens, sendo o alto custo como o principal, entretanto, é capaz de obter resultados satisfatórios clinicamente e até se sobressair ao método primordial. Deste modo, pode-se concluir que o escaneamento intraoral produz resultados com maior êxito
Uso da toxina botulínica na neuralgia trigeminal: revisão de literatura
Full text linkTrigeminal neuralgia is considered a chronic craniofacial neuropathic pain limited to the area
innervated by one or more branches of the trigeminal nerve, considered one of the strongest
types of pain a person can experience, considerably limiting primordial facial functions. The use
of botulinum toxin has been effective in the treatment of several painful conditions, including
trigeminal neuralgia, in these cases botulinum toxin type A is a safe therapeutic option, with low
risk of complications and with good results.The present study aims to review the literature
seeking evidence and advances in the use of botulinum toxin in the treatment of trigeminal
neuralgia, discussing its mechanism of action, and the results in the treatment of this neuropathic
pain. A search for articles was carried out using the following search engines: PubMed, Google
Scholar, Scielo and relevant books on the subject, covering national and international literature,
free original articles and available in full. Considering the limitations and objectives of this work,
it can be concluded, based on the literature, that botulinum toxin type A injections are effective
as a treatment for trigeminal neuralgia due to its antinociceptive mechanism; however, it should
be reserved for patients who are refractory to conventional pharmacological treatment. In these
patients, the use of low doses is recommended, which, according to the reviewed literature,
correspond to 25 U. More clinical studies with an adequate methodology are needed, mainly
comparing BTX-A with pharmacological therapies with an adequate follow-up time to know
their true effectiveness.A neuralgia trigeminal é considerada uma dor neuropática craniofacial crônica limitada à área
inervada por um ou mais ramos do nervo trigêmeo, considerada um dos tipos de dor mais
forte que uma pessoa pode sentir, limitando consideravelmente as funções faciais primordiais.
O uso da toxina botulínica tem sido eficaz no tratamento de diversas condições dolorosas,
incluindo a neuralgia trigeminal. Nesses casos, a toxina botulínica do tipo A é uma opção
terapêutica segura, com baixo risco de complicação e com bons resultados. O presente estudo
objetivou revisar a literatura buscando evidências e avanços da utilização da toxina botulínica
no tratamento da neuralgia trigeminal, discutindo seu mecanismo de ação, e os resultados no
tratamento dessa dor neuropática. Foi realizada uma busca por artigos utilizando os seguintes
motores de busca: PubMed, Google Scholar, Scielo e livros relevantes sobre o assunto,
abrangendo a literatura nacional e internacional, artigos originais gratuitos e disponíveis na
íntegra. Considerando as limitações e objetivos desse trabalho, pôde-se concluir, baseado na
literatura, que as injeções de toxina botulínica do tipo A são eficazes como tratamento para a
neuralgia trigeminal devido ao seu mecanismo antinociceptivo; porém deve ser reservada para
pacientes refratários ao tratamento farmacológico convencional. Nesses pacientes recomenda-
se a utilização de doses baixas que segundo a literatura revisada correspondem a 25 U. São
necessários mais estudos clínicos com uma metodologia adequada, comparando
principalmente a TxB-A com terapias farmacológicas com um tempo de acompanhamento
adequado para saber sua verdadeira eficáci
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
Técnica de moldagem com casquete acrílico utilizando silicone de adição: proposta de técnica e relato de caso clínico
Full text linkThe constant evolution of dentistry has allowed that teeth, previously condemned to extraction due to fractures and extensive cavities, are rehabilitated using fixed prostheses. The key to success is, however, dependent on the communication between the prosthodontist and the dental prosthetist through accurate dental impressions. The present study presents a clinical case of a patient with an upper right incisor (tooth 11) fractured at the cervical level, which was rehabilitated with a dental impression technique using an acrylic transfer cap for gingival retraction and addition silicone. This combined technique, which makes use of the best characteristics of both materials, produced an accurate impression, which in turn resulted in a high-quality prosthesis with excellent adaptation, ensuring a successful rehabilitation.A constante evolução da odontologia tem permitido que dentes, antes condenados à extração por fraturas e cavidades extensas, sejam reabilitados com próteses fixas. A chave para o sucesso, no entanto, depende da comunicação entre o protesista e o protético por meio de impressões dentais precisas. O presente estudo apresenta o caso clínico de um paciente com um incisivo superior direito (dente 11) fraturado em nível cervical, que foi reabilitado com a técnica de moldagem dentária utilizando um casquete de transferência acrílico para retração gengival e silicone de adição. Essa técnica combinada, que aproveita as melhores características dos dois materiais, produziu uma impressão precisa, que por sua vez resultou em uma prótese de alta qualidade e excelente adaptação, garantindo o sucesso da reabilitação
Infiltrações e agulhamentos em pontos gatilho-miofasciais revisão de literatura.
Full text linkMyofascial pain (MFD) is a regional muscle dysfunction that originates from highly
sensitive areas in the tight muscle, tendon or fascial band that are usually called
Myofascial Trigger Points (PGMs). Among the forms of treatment for PGMs, the
infiltration of substances and dry needling stand out. Thus, this study aimed to verify
how these procedures are performed and compare the effectiveness of both, through
a literature review. A bibliographic search was carried out in the PUBMed and Scielo
databases using the time frame from 2005 to 2021. The search descriptors used
were “Temporomandibular Dysfunction”, “Myofascial Pain”, “Trigger Points”,
“Temporomandibular Disorder”, “ Myofascial pain”, “Tigger points”. Inclusion criteria
were articles in Portuguese and English that addressed the topic. Infiltrations with
substances can be done with local anesthetics, botulinum toxin and saline solution,
while dry needling does not inject the substance. The findings in the literature show
that both techniques are safe and effective to treat PGMs, therefore, it is up to the
dentist to choose which one will be used based on the characteristics of each patient.A dor miofascial (DMF) é uma disfunção muscular regional que se origina de áreas
de muita sensibilidade no músculo tenso, tendão ou banda fascial que usualmente
são chamadas de Pontos-Gatilho Miofascial (PGMs). Dentre as formas de
tratamento para os PGMs, destaca-se a infiltração de substâncias e o agulhamento
a seco. Assim, o presente trabalho teve como objetivo verificar como é realizado
esses procedimentos e comparar a eficácia de ambos, por meio de uma revisão de
literatua. Realizou-se uma pesquisa bibliográfica nas bases de dados PUBMed e
Scielo utilizando o recorte temporal de 2005 a 2021. Os descritores de pesquisa
utilizados foram “Disfunção temporomandibular”, “Dor Miofascial”, “Pontos de
Gatilho”, “Temporomandibular Disorder”, “Myofascial pain”, “Tigger points”. Os
critérios de inclusão foram artigos em Português e Inglês que abordassem a
temática. As infiltrações com substâncias podem ser feitas com anestésicos locais,
toxina botulínica e soro fisiológico, enquanto no agulhamento a seco não se injeta
substância. Os achados da literatura mostram que as duas técnicas são seguras e
eficazes para tratar os PGMs, portanto, cabe ao cirurgião-dentista escolher qual será
utilizada com base nas características de cada paciente
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