1,720,978 research outputs found
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Knowledge development to improve the performance of the rehabilitated traditional architecture. The case of Sassi di Matera
No full textVariations on the Author
Get PDF“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
Get PDFWe 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
Congenital Ectopia cordis in cattle
No full textEctopia cordis is a congenital anomaly defined as an abnormal position of the heart outside the thorax. Based on the position of the heart, the ectopia is cervical, thoracic and abdominal. The first form has been observed most frequently in domestic animal, whereas the last two have been described mainly in man. The article reports 6 cases of Ectopia cordis in calves. In five cases the heart was situated in the cervical area, in one case outside the chest. Affected calves were both male and female, and of different breeds. Two calves were stillborn, three died during the first days of life whereas the last survived for one month. Among the different animals species Ectopia cordis seems to occur mostly in cattle. In this species the cervical Ectopia cordis accounts for the majority of the cases. Cervical Ectopia cordis is likely due to fibrous adhesions between the pericardium and the surrounding tissues that inhibit the migration of the heart into the thoracic cavity. This condition has been found in the subjects examined. Within the pericardial cavity, the apex of the heart was, generally, cranially oriented and the right ventricle was hypertrophic. Furthermore, the pulmonary trunk was connected with the aortic arch by a persistent arterial duct. Thoracic Ectopia cordis is due to a failure of the two embryonic sternal islands to come together, although it has also been hypothesized that the lack of fusion of the sternum is secondary to the ectopia of the heart itself. In any case, the heart protrude from the defective thorax and the pericardium is missing. It is conviction of the authors that, similarly to other congenital malformations, Ectopia cordis is underestimated. Therefore, the authors prompt practitioners and farmers to submit all cases of malformed calves to allow more in depth studies, as a lot of malformations may be caused by genetic defects
Congenital Ectopia cordis in cattle
No full textVengono descritti sei casi di Ectopia cordis (anomalo posizionamento del cuore al di fuori della cavità toracica) nel bovino, cinque dei quali di tipo cervicale, uno sternale. La condizione, osservata in soggetti di più razze e di diverso genere, in due casi ha provocato natimortalità, in tre casi la morte nei primissimi giorni di vita, nell’ultimo vitello una sopravvivenza di un mese. Fra le specie animali, il bovino risulta quello col maggior numero di segnalazioni di Ectopia cordis, soprattutto del tipo cervicale, rappresentando, fra le altre cose, un potenziale modello per studi teratologici comparati con la medicina umana. La convinzione che i dati epidemiologici della patologia, al pari di altre malformazioni, soffrano di sottostima, motiva le sollecitazioni a veterinari ed allevatori a segnalare simili malattie malformative a centri di ricerca per favorirne gli studi. Fra le ipotesi eziologiche,
infatti, non può essere taciuta quella genetico/ereditaria, fatto preoccupante nella generalizzata tendenza alla riduzione della variabilità genetica nelle razze bovine.Ectopia cordis is a congenital anomaly defined as an abnormal position of the heart outside the thorax. Based on the position of the heart, the ectopia is cervical, thoracic and abdominal. The first form has been observed most frequently in domestic animal, whereas the last two have been described mainly in man. The article reports 6 cases of Ectopia cordis in calves. In five cases the heart was situated in the cervical area, in one case outside the chest. Affected calves were both male and female, and of different breeds. Two calves were stillborn, three died during the first days of life whereas the last survived for one month. Among the different animals species Ectopia cordis seems to occur mostly in cattle. In this species the cervical Ectopia cordis accounts for the majority of the cases. Cervical Ectopia cordis is likely due to fibrous adhesions between the pericardium and the surrounding tissues that inhibit the migration of the heart into the thoracic cavity. This condition has been found in the subjects examined. Within the pericardial cavity, the apex of the heart was, generally, cranially oriented and the right ventricle was hypertrophic. Furthermore, the pulmonary trunk was connected with the aortic arch by a persistent arterial duct. Thoracic Ectopia cordis is due to a failure of the two embryonic sternal islands to come together, although it has also been hypothesized that the lack of fusion of the sternum is secondary to the ectopia of the heart itself. In any case, the heart protrude from the defective thorax and the pericardium is missing. It is conviction of the authors that, similarly to other congenital malformations, Ectopia cordis is underestimated. Therefore, the authors prompt practitioners and farmers to submit all cases of malformed calves to allow more in depth studies, as a lot of malformations may be caused by genetic defects
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe 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
- …
