1,720,996 research outputs found
The lakes of the high Emilia-Romagna Apennines (northern Italy): a preliminary review of their geomorphological characteristics.
No full textThis paper describes preliminarily the main geomorphological characteristics of the lakes of the high Emilia-Romagna Apennines. The term “lake” is attributed to those features of the landscape indicated by this name in bibliographic references, whereas the term “high” refers to the Apennine sector above the altitude of 1000 m a.s.l.The illustrated data are taken from an inventory of the lakes which was prepared through a detailed bibliographic research on single lakes, the compilation of lake data sheets and elaboration of a Map of the Lakes. For each lake the data sheets contain the name, geographic location, dimensions, presence of an influent and effluent, origin, summarised description from literature, state of conservation, bibliography and explanatory notes if present. In the Map of the Lakes the various lakes were numbered and represented according to their origin. In total, 118 lakes were inventoried and analysed on the basis of their main characteristics. From this analysis, it comes out that most lakes (95% circa) are located west of the R. Reno basin. As for altitude, the highest percentage of lakes (20% circa) is located in the altimetric belt ranging from 1300 to 1400 m. Most of the lakes have an area lower than 1 ha. As for their origin (which in 12% of the cases is not indicated in bibliography), the most common genesis (about 65%) is due to glacial processes and, secondarily, landslide processes (about 17%). In particular, glacial lakes are exclusively found west of the R. Reno catchment basin. This is related to the fact that during the last glacial period the glaciers of the northern Apennines were located exclusively west of the R. Reno basin. By considering the state of conservation, it results that 102 lakes (86.5%) are existent (with 75 permanent and 27 temporary) whereas 16 are extinct (13.5%). The data relative to active lakes (location within their catchment basins, distribution according to altitude, area and origin) are consistent with all general data. Nevertheless, the detailed analysis of extinct lakes emphasises that their disappearance affected mainly the basin of the R. Secchia, those ranging between 1000 and 1400 m a.s.l., those with a surface less than 1 hectare and glacial lakes
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
Caratterizzazione anatomo-morfologica delle micorrize di Tuber maculatum Vittad. su Ostrya carpinifolia Scop
No full textCaratterizzazione anatomo-morfologica delle micorrize di Tuber maculatum Vittad. su Ostrya carpinifolia Scop
No full textIdentificazione zoologica della fenice rappresentata sulla facciata della Caupona di Euxinus
No full textL'IMMAGINE DELLA FENICE RITRATTA SULLA CAUPONA DI EUXINUS (POMPEI), IDENTIFICATA FORMALMENTE COME UN FAGIANO DORATO, VIENE ESAMINATA DA UN PUNTO DI VISTA ZOOLOGICO.SI RITIENE CHE LE CARATTERISTICHE MORFOLOGICHE DELL'ANIMALE RITRATTO SIANO PIU' COMPATIBILI CON QUELLE DI UN LOFOFORO (Lophophorus impejanus
SHELF-LIFE STUDIES OF SLICED COOKED HAM PACKAGED INPLA TRAYS WITH OXYGEN SCAVENGERS
No full textThe novel trend in food packaging is the extension of the shelf-life by means of mild technologies. This trend faces the challenge to offer “fresh like” foods products with reasonable shelf-lives and high global quality level. The reduction of fooddurability, however, determines a high impact of plastic packageson the urban waste management, because of their short life cycle. A possible solution to this problem could be the use of biodegradable/compostable packaging materials, obtained from annually renewable crops. Polylactic acid (PLA) is one of the most promising compostable materials. In this work, the refrigerated shelf-life of sliced cooked ham packaged in PLA withActive device and different initial atmosphere modifi cations wasevaluated
Pesci estinti nel Modenese: uno studio per il recupero del panzarolo (Knipowitschia punctatissima) e dello spinarello (Gasterosteus aculeatus).
No full textlo studio fa parte delle indagini sviluppate a supporto del progetto comunitario Life "Econet- corridors for life". E' indagato lo status regionale di due specie ittiche d'interesse comunitario' il panzarolo (knipowitschia punctatissima) e lo spinarello (Gasterosteus aculeatus) e verificate le possibilità di ripristinare alcune popolazione delle stesse nel modenese. sono stati effettuati sopralluoghi in 29 siti sul territorio regionale in 16 dei quali è stata rilevata la comunità ittica e in 13 quella dei macroinvertebrati bentonici. Ambedue le specie ittiche si confermano come critically endangered a livello regionale e sostanzialmente estinte nel modenese dove si potrebbe tentare la reintroduzione in due sistemi idrici della zona della conoide del torrente Tiepido
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