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Rip currents in Mediterranean environment: a case study along eastern Ligurian coast
No full textThis thesis proposes a study on the rip currents development within a Mediterranean
embayed beach. The rip (or cross-shore) currents are among the most
investigated phenomena in the eld of coastal research, and their fame is due
to their environmental and socio-economic implications. The coastal areas are
considered as transition environments, where hydrosphere, lithosphere, biosphere,
atmosphere and (often) anthroposphere meet. The rip currents are
a crucial component of the coastal hydro-morphodynamic processes (hydrosphere
and lithosphere) (Short, 1999; Castelle et al., 2016), play a role in larval
recruitment processes (biosphere) (Shanks et al., 2010), and they are also
well known as risks source for beachgoers (anthroposphere) (Short and Hogan,
1994; Austin et al., 2012). However, the rip currents role along the Mediterranean
coasts is often neglected, and most of the literature concerns the rip
currents in oceanic environments. The aim of this research is a detailed description
of the rip currents behaviour along a Mediterranean embayed beach,
also considering the possible sea-level rise implications. The study area was
identied within Levanto bay, along the eastern Ligurian coast (NW Italy).
The research activity has been conducted through an integrated application
of several investigation methodologies, in order to obtain the best possible results
in therm of phenomena description. The rip currents individuation is
performed through a coastal video-monitoring system installed on the Levanto beach, and the collected data were processed through a dedicated software for
coastal video-monitoring (Brignone et al., 2012). Several eld surveys were
performed to obtain a full description of the geomorphological boundary conditions
(topo-bathymetric surveys and sedimentological sampling). The rip
currents description and evaluation were executed through the application of
the XBeach model (Roelvink et al., 2009), which is a well-known tool for
coastal modelling. Moreover, the modelling approach allowed the evaluation of
the possible rip currents response under dierent sea-level rise scenarios (local
sea-level projections to 2100) (Kopp et al., 2014). The obtained results show
a detailed description of the rip currents phenomena, showing their essential
role in the local coastal dynamics. The proposed research approach has proved
to be reliable for the rip currents investigation in the Mediterranean environment,
and it can be applied along any stretch of coast of the Mediterranean
Sea. Moreover, the modelling results showed a signicant relation between
sea-level rise and rip currents behaviour. The results of this study highlight
the role of the rip currents in the Mediterranean environment and represent a
rm basis for the rip currents investigation along the Mediterranean coasts
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
Variations 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
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
Rip current hazard assessment on a sandy beach in Liguria, NW Mediterranean
No full textRip currents are one of the most significant environmental hazards for beachgoers and are of interest to coastal scientists. Several studies have been conducted to understand rip current dynamics, and several approaches for rip hazard assessment have been proposed. In general, the purpose is to provide knowledge and tools to support authorities and lifeguards in rip current risk prevention. This study proposes the application of an expeditious methodology to evaluate rip current hazard and risk, based on probability theory. The tested area was located along the Alassio beach, a renowned tourist destination located on the western Ligurian coast (NW Italy). A coastal video-monitoring system was used for rip currents individuation, whereas wave data were collected thanks to an oceanographic buoy managed by Regione Liguria. In detail, a yearly analysis was performed to identify the correspondence between rip currents and wave parameters data. The results showed that rip currents occur, in the study area, under moderate wave conditions (0.5≤Hs≤1.34 m; 4.7≤Tm≤7.0 s; 150∘N≤θm≤227∘ N). Based on this analysis, an easy application of the probability theory was applied to evaluate the level of hazard. Moreover, considering the official tourist data, we also perform an expeditious rip currents risk evaluation. The results showed that the hazard level is considered high at annual time scale and moderate during the tourist season; the risk is related to seasonal presences. The study can propose a tool to support authorities and lifeguards in water safety planning and management
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