1,720,957 research outputs found
New insights from analyses of geophysical data in the Northern Apennine buried structures for evaluation of their geothermal potential
No full textGeothermal energy is arguably the most attractive of low-CO2 renewable resources, being broadly distributed and available in every period of the year. The main aim of the InGEO project (Innovation in GEOthermal resources and reserves potential assessment for the decarbonisation of power/thermal sectors) is to develop an innovative exploration workflow integrating geophysical data and other direct and indirect information, organized to make available a sort of decision support system of geothermal projects. To this purpose, we chose as a target area the Northern Apennine buried structures belonging to the Romagna and Ferrara Folds (RFF). This area extends from the termination of the Emilia Folds in the West to the Adriatic coast in the East and from the outcropping edges of the Northern Apennines in the South to the undeformed Po foredeep in the North. The RFF area has been the subject of previous geothermal studies revealing relatively low geothermal gradients within the deep carbonate units (on average 14 °C/km) and more significant thermal gradients (on average 53 °C/km) in the overlying impermeable formations (Pasquale et al., 2013). This feature in temperature distribution with depth is clear evidence for fluid thermal convection occurring in the deep seated carbonate units of Mesozoic age, which constitutes the local geothermal reservoir. The shallow crust of this area has been investigated by several previous studies and through a total of 535 deep exploratory
wells (VIDEPI database: https://www.videpi.com/videpi/videpi.asp), having final depths ranging from 0.5 up to 6.5 km below ground level. They provide essential information, concerning lithostratigraphy, temperatures measured during drilling stops and geophysical logs, commonly electrical resistivity, gamma ray and sonic. Several geophysical investigations, recently carried out in the Alps and Po plain, revealed both the shallow ad
deep structures of the study area, in terms of lateral variations of Bouguer anomalies, seismic velocities, and main discontinuities (Nouibat et al., 2023; Zahorec et al., 2021). The analyses of the data collected revealed a good correspondence between the low seismic velocities, characterizing the shallow crust of the RFF, and the negative Bouguer anomalies. We reconstructed the Moho depth of the area, estimating the depth of the iso velocity contour of 4.1 km/s (Nouibat et al., 2023) and observed its deepening from NE to SW, towards the Apennines, from ~27 km to ~48 km. Seismic tomography of the upper mantle (Rappisi et al., 2022) reveals that the velocity in the shallow and deep lithosphere is low in the central part of the study area, possibly related to a local asthenospheric upwelling and tends to increase beneath the Apennines. The results of this ongoing research will be the input of the thermal model and contribute to the development of an open-source and web
based GIS tool, and to the calculation of the deep geothermal energy potential for both hydrothermal resources and deep heat exchangers
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
Analyses, interpretation, and integration of boreholes data and seismic reflection profiles into a 3D Geological Model of the Romagna and Ferrara Folds, (Eastern Po Plain) for the evaluation of geothermal resources
No full textGeothermal energy is a constant, clean, and renewable energy source that utilizes the Earth’s internal heat for different applications, such as heating, cooling, and electricity generation. However, the estimation and exploitation of this energy implies to acquire a deep knowledge of the rocks composing the reservoirs and those overlying it.
The InGEO project (“Innovation in GEOthermal resources and reserves potential assessment for the decarbonisation of power/thermal sectors”; www.ingeo.cnr.it) seeks to develop an innovative exploration workflow integrating geological, geophysical, and other datasets to enhance the characterization of reservoir rocks and their sedimentary cover. This approach supports strategic planning for deep geothermal resource utilization in Italy.
Deep-seated carbonate reservoirs, forming the basement of sedimentary basins, are key targets for geothermal development. In the eastern Po Plain, the buried Romagna and Ferrara Folds (RFF)—stretching from the Emilia Folds to the Adriatic coast and from the northern Apennines to the undeformed Po foreland—show significant geothermal gradient variations, indicative of convective heat flow in deep carbonate units. Low geothermal gradients (14°C/km) within the carbonate reservoir and higher gradients (53°C/km) in overlying impermeable formations indicate thermal convection within Mesozoic carbonate units (Pasquale et al., 2013). For the evaluation of the geothermal potential of the area, the implementation of a coistent 3D geological model, displaying the thickness variations of the major lithological units of the area, is crucial. To this aim, we have digitized and analyzed over 200 seismic surveys (VIDEPI database, www.videpi.com), 700 deep boreholes
(> 1500 m deep; CNR database, www.geothopica.igg.cnr.it), and 160 borehole logs (sonic and lithological; Livani et al., 2023). Seismic reflection interpretations, constrained by well stratigraphy, were used to identify key lithological unconformities. Age limits maps have been obtained by interpolating well tops and interpreted seismic horizons. The uncertainties of the results increase with the age of the units, due to the decrease of the
control points with depth (well tops). These preliminary maps have been converted from the TWT to depth domain, in order to obtain a consistent 3D geological model. The obtained results were compared with those of the previous study of Livani et al. (2023), which focused on the on-shore part of the study area. Our 3D model will be used to constrain the seismic velocities and densities distribution in depth, obtained from the analyses and interpretation of different geophysical datasets (Basant et al., 2025) and become part of a crustal model public available for multiple applications, such as geothermal resources evaluatio
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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