1,720,959 research outputs found
Relevance of the net natural inflow for investigating long-term hydrological changes in a managed lake catchment
No full textThe net natural inflow to a lake is an important quantity for developing lake management strategies and assessing hydrological change. The net natural inflow embeds the relevant hydrological processes governing the lake levels and it determines the lake levels and the emissary discharge under natural conditions, i.e. without withdrawals. The net natural inflow can be calculated by using an inverse procedure that reduces some of the sources of uncertainty that characterize the hydrological balance. In this paper we use the inverse procedure to analyze the net natural inflow of an Italian lake (Lake Bracciano) for which over a century of data are available. The behavior of the net natural inflow to the lake is analyzed, highlighting the high inter-annual variability and the consequent exposure of the lake to extreme events, in particular droughts. Evidence of hydrological change is discussed, as well as the importance of the availability of long time series for meaningful lake analysis and management. The analysis demonstrates the advantages of using the net natural inflow for lake hydrological analysis
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
Groundwater monitoring in regional discharge areas selected as “hydrosensitive” to seismic activity in Central Italy
No full textThe aim of this study was to identify potential patterns of hydrogeological and geochemical changes in response to seismic activity, including possible variations of ion concentrations, gas compositions, and isotopic ratios in groundwater. Different monitoring areas in Central Italy
have been selected, located in regional discharge areas with abundant groundwater resources. They are located near active normal faults, along the southeast-ward prolongation of the faults that nucleated the L’Aquila 2009 Mw 6.3 event and more recently the seismic sequence of Amatrice–Norcia 2016–2017. The test-site selection has been based on both seismic and hydrogeological criteria. The areas are characterized by low strain rate, long frequencies of earthquake occurrence and high depth of the brittle-ductile transition, which are indicators of potential future earthquakes. In this framework, the hydrogeological setting is considered essential for obtaining reliable results applied to seismic purposes. Springs with long and deep flow paths in the regional aquifers are under monitoring. Indeed, the regional groundwater flows
are also clearly influenced by deep fluids contribution. Consequently, the hydrogeological monitoring has been enhanced by continuous active radon and carbon dioxide probes, installed in some of the monitored springs. The results show significant inferences between hydrogeology and seismicity, having different characteristics in relationship with Amatrice–Norcia 2016–2017 seismic sequence and with global minor seismic activity. Based on these preliminary results, the second phase of this study is aimed to reinforce monitoring in selected springs and wells
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
Groundwater changes in the Nera river valley due to the August-October 2016 seismic sequence in central Italy
Get PDFHydrologic regime, earthquake, central Apennines, groundwater discharge
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