1,720,965 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
Exploring the Safety Profile of Ornidazole as Drug Candidate for Endometriosis Treatment
No full textTargeting inflammation in endometriosis: emerging therapeutic options
No full textIntroduction: Endometriosis is a chronic, estrogen-dependent inflammatory disease affecting up to 10% of reproductive-aged women. Current therapies are predominantly hormone-based and offer symptomatic relief without correcting the immune dysregulation and inflammation that drive lesion persistence, pain, and infertility. Areas covered: This review summarizes emerging strategies that directly target inflammatory pathways in endometriosis. Key mechanisms involved in lesion survival and symptom generation include cytokine signaling (TNF-α, IL-1, IL-6), oxidative stress, immune-checkpoint dysregulation, and activation of the JAK/STAT pathway. Therapeutic approaches discussed comprise biologic agents (infliximab, etanercept, adalimumab, anakinra, tocilizumab), small-molecule JAK inhibitors (tofacitinib), and antioxidant compounds such as N-acetylcysteine, resveratrol, and vitamins C and E. Expert opinion: Targeting inflammation represents a promising shift in endometriosis management, particularly for women who do not respond to hormonal therapies or aim to conceive. Preclinical studies consistently demonstrate reductions in lesion size, inflammatory cytokines, oxidative stress, and neuroangiogenic signaling. Early clinical evidence - especially for TNF-α and IL-1 blockade and for N-acetylcysteine - suggests improvements in pain and, in selected cases, reproductive outcomes. Although preliminary, these findings support the rationale for inflammation-directed therapies. Future research should prioritize randomized trials, long-term safety and fertility assessment, and biomarker-guided patient stratification to identify responders and optimize precision use of these agents
Experimental and new investigational drugs for the treatment of uterine fibroids
No full textIntroductionUterine fibroids, the most prevalent benign tumors among reproductive-age women, pose treatment challenges that range from surgical interventions to medical therapies for symptom control. Progestins and estroprogestins effectively manage uterine bleeding by suppressing dysfunctional endometrium over fibroids. While GnRH agonists represent a crucial milestone in symptom treatment, their prolonged use results in menopausal-like symptoms and irreversible bone mineral density loss. Advancements in understanding fibroid pathophysiology have prompted the exploration of new compounds to overcome current therapy limitations.Areas coveredThis manuscript offers an updated overview of investigational drugs for symptomatic uterine fibroids.Expert opinionDespite ulipristal acetate's well-established efficacy as a selective progesterone receptor modulator (SPRM) in fibroid treatment, its prescription has declined due to the rare but severe risk of liver damage. Oral GnRH antagonists, like elagolix, relugolix, and linzagolix, with their novel pharmacodynamic properties, are gaining traction in fibroid management, inducing a dose-dependent reduction in circulating sex hormone levels. Ongoing research on natural compounds, such as vitamin D and epigallocatechin gallate (EGCG), presents emerging options for treating uterine fibroids. This evolving landscape reflects the ongoing efforts to improve therapeutic outcomes for individuals with symptomatic uterine fibroids
Ultrasound diagnosis of bowel endometriosis
No full text: Background Bowel endometriosis is one of the more severe manifestations of deep endometriosis; it may cause pain and intestinal symptoms. The non-invasive diagnosis of bowel endometriosis is of crucial importance in planning the management of patients affected by this condition. Objectives This review aims to describe how transvaginal ultrasonography (TVS) is performed in patients with suspicion of rectosigmoid endometriosis, the diagnostic performance, and the strengths and limitations of this technique. Methods To identify relevant literature, a literature search was performed across the PubMed and Google Scholar databases up to July 2024. Outcome Numerous meta-analyses have demonstrated that TVS has high diagnostic accuracy in diagnosing rectosigmoid endometriosis. Rectosigmoid nodules can present with different morphological characteristics, but they are typically described as irregular, hypoechoic nodules located in the anterior wall of the rectosigmoid colon. The presence of "soft markers," such as a negative sliding sign and kissing ovaries, can further reinforce the diagnosis of this condition. Postero-lateral parametrial involvement often coexists with large rectal nodules. Introducing water contrast into the rectosigmoid does not improve the performance of TVS in diagnosing rectosigmoid endometriosis. Conclusions and Outlook TVS should be the first-line investigation in women suspected of having rectosigmoid endometriosis. The widespread use of TVS for the diagnosis of intestinal endometriosis can reduce diagnostic delays and facilitate the treatment of patients affected by this condition
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
- …
