1,721,006 research outputs found
Vertebrate palaeontology in Sardinia: a short sketch
No full textIn this note the history of discoveries, researches and studies on vertebrate fossils of Sardinia is described, from the pioneering works of Cuvier and Wagner until the present day. The contributions of palaeontologists such as Alberto de La Marmora, Charles Immanuel Forsayth Major, Dorothy Bate, Alberto Malatesta is pointed out. A rich bibliography, including all the major papers, and many minor ones,dealing with the vertebrate palaeontology of Sardinia is also presented
Terras de Collu
No full textThe stratigraphic and systematic position of two perrisodactyl remains, ?Paralophiodon sardus and Atalonodon monterinii, collected in Early Eocene deposits in Terras de Collu (south-western Sardinia) is discussed
Mandriola-Capo Mannu
No full textAt Capo Mannu, in the northern part of the Sinis Peninsula (western Sardinia), a stratigraphic succession think more than 80 m, overlying with a possible erosion unconformity the Middle Miocene-Messinian sequence, attests a regressive phase evolving from marine-littoral to continental dunar deposits, which are intercalated by locally fossiliferous palaeosoils. Fossil vertebrates have been retrieved from a small cliff cropping out next to the sea shore at Mandriola and from the main Capo Mannu cliff. The following mammals have been collected in this locality (Capo Mannu D1): Erinaceidae indet., Talpidae indet., Parasorex sp., Soricidae indet., Rhinolophus sp., Vespertilionidae indet., Tyrrhenoglis aff. T. figariensis, Rhagapodemus azzarolii, Apodemus mannu, Prolagus aff. P. figaro, Leporidae indet., Sus aff. S. sondaari, Nesogoral sp
Monte Tuttavista (Orosei)
No full textMonte Tuttavista (Eastern Sardinia, Italy) is one of the major localities for late Neogene- Quaternary fossil vertebrates in Sardinia. In 1995, some fossil remains were found in this area after quarrying activity had led to the discovery of a number of fossiliferous deposits. These remains yielded important information, opening up new perspectives on the biochronology of Sardinian fauna and the palaeobiogeography of the Mediterranean area. The fossil mammals collected in the fissure fillings of this area belongs to, at least, four different assemblages spaning in a period from the Late Pliocene to the Holocene. The following mammal species have been classified till now: Talpa tyrrhenica, “Nesiotites” sp. I, “Nesiotites” sp. II, Myotis cf. M. bechsteini, Macaca aff. M. majori, Tyrrhenoglis cf. T. majori, Tyrrhenoglis cf. T. figariensis, Gerbillidae indet., Microtus (Tyrrhenicola) sondaari, Microtus (Tyrrhenicola) henseli, Rhagapodemus minor, Rhagamys orthodon, Prolagus figaro, Prolagus sardus, Leporidae n. gen. n. sp., Chasmaporthetes melei, Cynotherium sp., Cynotherium sardoum, Mustelidae indet., Mustela cf. M. putorius, Pannonictis sp., Enhydrictis galictoides, Sus sondaari, Praemegaceros aff. P. sardus, Praemegaceros cazioti, Asoletragus gentry, Nesogoral sp. 1 ?aff. Nesogoral meloni, Nesogoral sp. 2, ?Caprinae indet
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
A Tanousia from the late Middle Pleistocene of the Italian Peninsula (Gastropoda: Prosobranchia: Hydrobiidae)
No full textVariations 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
- …
