1,720,960 research outputs found
Toponomastica e ortografia mòchena
No full textdiscussione dei fondamenti scientifici delle proposte ortografiche per la toponomastica mòchen
Predictive factors for malignancy in Hürthle-cell thyroid neoplasia. Effect of surgical treatment
No full textThe aim of this study has been to evaluate factors predicting malignancy in patients with Hürthle cell neoplasms. Medical records from 36 patients who underwent thyroidectomy for Hürthle cell neoplasms between January 1998 and December 2002 were analyzed. Of the 36 patients, 19 had carcinomas and 17 had adenomas, resulting in a 52.7% prevalence of malignancy. Both fine-needle aspiration and intraoperative frozen section had low sensitivities in cancer detection (22.2% and 33.3% respectively). Hürthle cell carcinomas were significantly larger than adenomas (30.3 mm +/- 3.9 vs 17.6 mm +/- 2.3, P = 0.012), however 42% of carcinomas had a diameter between 10 and 20 mm. Size of Hürthle cell tumors is predictive of malignancy, but it is not the only factor to make surgical decision effective. Because of these uncertainties, authors believe that total thyroidectomy is the treatment of choice of all Hürthle cell neoplasms
Equipment testing and tuning: the cold-knife cryomicrotome microm HM-560
No full textA major innovative feature of the Microm HM-560 cryomicrotome is the independent control of specimen and knife temperatures. We used such equipment with a variety of tissues, and fixation and freezing procedures. High-quality sectioning was reproducibly obtained using 1) a low temperature setting for the sectioning blade ("cold knife," about -33°C); 2) a comparatively high temperature for the specimen, and 3) a suitable mounting medium, which would remain solid up to about 0°C. Specimen temperature was set between -8° and -15°C for 4-μm sectioning, higher temperatures (-1° to -8°C) being appropriate when cutting at 10 to 20 μm. Under such conditions, disposable blades were effective throughout, while a modified antiroll plate profile further enhanced usability. After intensive use for almost 3 years, by more than 15 different users, the cryomicrotome is in excellent working order
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
- …
