1,721,215 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
Interactions of NF-kappaB with chromatin: the art of being at the right place at the right time.
No full textTranscription factors of the NF-kappaB family are essential regulators of the inflammatory and immune responses. The main 'switch' in NF-kappaB activation is cytoplasmic and leads to the release of NF-kappaB proteins from IkappaB molecules, specific inhibitors that prevent their nuclear accumulation. However, it is becoming increasingly apparent that in addition to this required activation step, both recruitment of NF-kappaB to target genes and NF-kappaB-induced transcriptional events after recruitment are actively controlled. Regulated recruitment of NF-kappaB to chromatin generates kinetic complexity in NF-kappaB-dependent gene induction and 'wires' NF-kappaB-regulated gene activity to simultaneously activated pathways and transcription factors
Prevalence and distribution of oral mucosal non-malignant lesions in the western Sicilian population
No full textBACKGROUNG:
The aim of the present study was to determine the prevalence of oral mucosal non-malignant lesions in the Sicilian population. In addition, we evaluated the association between each oral lesion and its risk factors.
METHODS:
This study analyzed a total of 2539 consecutive patients, attending the Department of Surgical, Oncological and Stomatological Disciplines of Palermo University, who were examined for the presence of various oral lesions during the period from January 2012 and February 2015.
RESULTS:
The sample consisted of 1330 (52%) female and 1209 (48%) male. The age ranged from 13-86 years with a mean age of 47.16 years. Among these subjects 1495 (58%), presented one or more lesions. All subjects were Caucasian. The most common lesion diagnosed was coated/hairy tongue affecting 16.7% of the subjects, followed by: lingual varices (16.3%), secondary herpes lesions (8.1%), aphthous ulcers (7.9%), fordyce granules (7.2%), frictional keratosis (5%), candidosis (4.9%), fibroepithelial hyperplasia (4.6%), squamous papilloma (3.8%), traumatic ulcers (3.7%), leukoplakia (3.2%), fissured tongue (3.2%), hemangiomas (2.7%), morsicatio buccarum (2.5%), melanin pigmentation (2.5%), lichen planus (2.5%), leukoedema (2.1%), petechiae (1.1%), geographic tongue (1%), actinic cheilitis (0.8%), and erythroplakia (0.1%). Overall, the prevalence of oral mucosal non-malignant lesions was linked to age, gender, diseases, and risk habits.
CONCLUSIONS:
The high prevalence necessitates adequate awareness of these lesions in the general population. The dental clinicians should also be knowledgeable about the etiopathogenesis, clinical presentation, diagnosis, and treatment of these lesions
Gastroesophageal Reflux Disease and Idiopathic Pulmonary Fibrosis: No Data for Supporting a Relationship After a Systematic Review
No full textPlastic downregulation of the transcriptional repressor BCL6 during maturation of human dendritic cells.
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