1,720,970 research outputs found
Morphometric Assessment of the Residual Width of the Distal Hamate Articular Surface after Graft Harvest for Hemi-hamate Arthroplasty
No full textBackground: The hemi-hamate arthroplasty (HHA) can restore joint congruity and stability in chronic fracture-dislocations of the proximal interphalangeal joint (PIPJ). Purpose of this study was to compare the width of the distal hamate articular surface (DHAS) to the width of the base of the middle phalanges (P2) of the fingers. We hypothesized the dimensions of the width of the DHAS would be similar to those of P2, leaving a small amount of residual DHAS width after autograft harvest. Methods: Fifty-nine CT scans of the hand without any bony pathology were evaluated. Three observers measured the following parameters and compared: (a) Width of the DHAS in the axial and coronal planes; (b) Width of the P2 articular bases of all four fingers; (c) Maximum capitate length (MaxCap) in the coronal plane. Results: The residual DHAS on the coronal plane after graft harvest (bone remaining on the radial and ulnar aspects each, not accounting for saw blade or osteotomy width thickness) among all patients was 1.3, 0.9, 1.4, and 2.4 mm for the index, long, ring and small fingers respectively. There was a strong correlation between DHAS and MaxCap r=0.76. Conclusion: There is likely to be a very small amount of residual hamate articular surface width left after the graft is harvested if the entire base of P2 is reconstructed
The Effect of Intraoperative Corticosteroid Injections on the Risk of Surgical Site Infections for Hand Procedures
No full textPurpose The aim of the study was to assess the risk of surgical site infection (SSI) in patients
who received an intraoperative injection (IOI) with a corticosteroid at the same time as hand
surgery for a different condition.
Methods This was a retrospective chart review of all patients who underwent hand surgery and
corticosteroid injections concurrently over an 8-year period. Comparison of the rates of SSI
was made of patients who had received an IOI and a matched control cohort of patients with
no intraoperative injection (nIOI). There were 391 patients in each group.
Results There were 8 SSIs in the IOI group compared with 2 in the nIOI group. One patient in
the IOI group had a deep infection whereas all other infections were superficial. In the IOI
group, 206 patients had injections on the side ipsilateral to their surgical procedure. Six of
these patients had SSIs, a significant difference compared with the control group. There were
185 patients who had contralateral injections. Two of these patients had SSIs. Compared with
the control group, this difference was not significant.
Conclusions Concomitant injection of steroid into the same side as the surgical site increases
the risk of postoperative infection. We do not recommend administering a corticosteroid
injection at the time of hand surgery
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
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
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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