1,720,979 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
Alar facial sulcus and nasal ala reconstruction: A challenging anatomical area
No full textMost nasal cutaneous malignancies occur on the caudal
third of the nose.1 Commonly, following resective
surgery, alar reconstruction is requested. Small skin defects
of the tip, dorsum or sidewall may be left healing
by secondary intention: although this may sometimes
create unpleasant scar, it rarely results in functional
impairment.2 In contrast, even small alar defects left to
heal by secondary intention cause nostril notching and
may cause external nasal valve partial collapse. For this
reason, all cutaneous defects of ala and alar cheek junction
(alar facial sulcus) require reconstruction and one
of the most performed flaps is melolabial interpolated
flap.
Transvascular hydrolysis of hyaluronic acid filler with hyaluronidase: An Ex vivo study
No full textBACKGROUND Despite the favorable safety profile of hyaluronic acid (HA) dermal fillers, side effects can occur. Skin necrosis is one of the most severe early-occurring complications resulting from accidental vascular impairment. Hyaluronidase (HYAL) is commonly used to degrade HA chains, allowing the degraded product to pass through vessels, and thus relieving the vascular obstruction. OBJECTIVE The purpose of this study is to evaluate, in an ex vivo setting, the capability of HYAL to degrade crosslinked HA that was injected into human vessels. MATERIALS AND METHODS During a neck dissection, a portion of the anterior jugular vein and facial artery was harvested. The vein and artery specimens were filled with 25 mg/mL of crosslinked HA filler. Each specimen was soaked in 0.5 mL of HYAL (300 IU/mL), in its own test tube, for 4 hours, after which the remaining HA was quantified. RESULTS The remaining HA volume was found to be 0.02 mL in the vein segment and 0.002 mL in the artery segment. CONCLUSION A single administration of HYAL may not be adequate to restore blood flow in the event of embolism, and relatively high doses of this enzyme must be injected hourly into the affected tissue until resolution is complete
Adverse events following covid-19 vaccine in patients previously injected with facial filler: Scoping review and case report
Full text linkThe “Vaccines and Related Biological Products Advisory Committee 17 December 2020 Meeting Briefing Document”, formulated by the FDA, reported three cases of swelling in areas previously injected with HA filler, introducing the possible relationship between a COVID-19 vaccine and adverse events in areas previously injected with HA fillers. The aim of this research is to report a case of an adverse event following a COVID-19 vaccine in a patient previously injected with facial filler. Furthermore, a scoping review on the same topic was performed. The research was carried out on the electronic databases PubMed, Cochrane Library, Web of Science, Google Scholar and Scopus. The selection process identified four articles as eligible for inclusion in the review. Nineteen patients, including the described case report, who experienced an adverse event following a COVID-19 vaccine in areas previously injected with facial filler were identified. Adverse events following a COVID-19 vaccine in patients previously injected with facial filler appear to be rare. A high BDDE cross-linking rate and/or a low-molecular-weight hyaluronic acid filler may have a higher tardive adverse event rate when triggered
Hyaluronidase use before rhinoplasty in noses previously injected with hyaluronic acid: Is it always necessary?
No full textNon surgical fat reduction with dehoxycholate: An update regarding available solutions in the european market
No full textNon surgical fat reduction can be achieved with
Energy Based Devices (EBD) such as cryolipolisys or
by dehoxycholate (DC) injections; moving an EBD can
be difficult and cumbersome, therefore, these systems
may not be practical for physicians who work in
multiple locations. Injectable treatments do not have
this disadvantage and can therefore be performed on
demand1-3. Moreover, EBDs must be purchased upfront,
whereas a supply of injectables can be purchased as
needed, when needed2. Nowadays ATX-101 is the only
approved drug containing DC: the sole purpose of this
drug is to reduce unwanted submental fullness. ATX-
101 was introduced into the US and Canadian markets
in 2015 and into the European market in 2017
Facial artery myomucosal flap vs. Islanded facial artery myomucosal flap viability: A systematic review
Full text linkThe aim of this study was to estimate the overall viability of the islanded facial artery myomucosal flap (iFAMM) compared to the facial artery myomucosal flap (FAMM). A systematic review of English articles was performed on PubMed and Cochrane Library electronic databases. Search terms included every nomenclature variant for FAMM flap and iFAMM flap. A total of 373 articles were identified, and 20 articles were considered eligible for inclusion in the review. A total of 486 flaps were evaluated (350 FAMM and 136 i-FAMM flaps). In all studies, the primary outcome assessed was flap viability, collecting the rate of total and partial flap necrosis and then comparing FAMM to i-FAMM. Overall reported partial/total necrosis rate for FAMM flap was 9.7%, 1.4% as total and 8.3% as partial necrosis. Overall partial/total reported necrosis rate for iFAMM flaps was 2.2%, 1.5% as total and 0.7% as partial necrosis. FAMM flaps, both as classical or islanded variants, are an effective option for intraoral small/medium sized defect reconstruction. Outcomes from the present review show a higher partial/total survival rate when this flap is harvested as islanded flap
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