1,721,103 research outputs found
MDPI - Special Issue "Microgrids for E-mobility: Electrical Machines and Drives, Power Conversion and Energy Management"
No full textDear Colleagues,
We invite you to contribute to this Special Issue with your latest research on microgrids for e-mobility.
Pollution reduction is one of the biggest challenges of this century, since the energy growing demand affects the increase of the use of petroleum and carbon fossil fuel. A socially widespread prosperity is sustainable only by reducing the energy waste or by increasing the efficiency of each link of the supply chain from production to the user. In recent years, microgrids have been considered as the solution for e-mobility and also for civil energy production, since they allow optimizing the power density and efficiency of electrical devices, thus limiting their peak power and consequently optimizing their storage use. Several commercial realizations confirm that the field covers both the interests of the research community and the industry. The scope of the proposed Special Issue is to define the state-of-the-art for e-mobility microgrids, in order to give to readers the opportunity to select the best solution for their own applications.
This Special Issue invites original papers on but not limited to:
1) Microgrid and subsystem modeling;
2) Hardware in the loop methods with physical validation and tests;
3) Electrical generators, motor and drive design and testing;
4) Power electronic converter modeling and testing;
5) Energy management strategies and techniques;
6) Microgrid reliability and availability;
7) Fault detection
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
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
Contribution to the stratigraphy of the Oligocene-Miocene foredeep successions of the Emilia-Tuscany Northern Apennines, Italy
No full textThe Oligocene-Miocene turbidite successions of the Emilia-Tuscany Apennines represent one of the most
intriguing topic of the Northern Apennines (NA), due to the complex relationships between tectonics and sedimentation
in a migrating thrust wedge - foredeep system, to the not-well constrained differences between orogenic landslides
(olistostrome) vs. tectonic chaotic complexes, to the significance of the associated marly deposits, to the emplacement
timing and modalities of synsedimentary thrust sheets. In order to achieve some key points to this articulated framework,
we have contributed with field-mapping and stratigraphic data on selected marly-turbidite sections of the most critical
areas of this sector of NA, which are: Mt. Modino, Civago-Torre degli Amorotti, Gazzano, Gova, Mt. Cimone, Ozola-
Ligonchio, Cerreto Pass, Pracchiola, Libro Aperto-Cima Tauffi sections. All these involve some of the most known and
not well constrained turbidite units of the NA, as the Mt. Modino Sandstones, the Mt. Cervarola Sandstones and the Gova
Sandstones, and the associated marly units as Marmoreto and Civago marlstone fms. These last are also massively involved
in highly deformed stacks within chaoticized tectonic units and slices, particularly in the Sestola-Vidiciatico Unit. Our
contribute on these sections regard a review of the geological and geometrical field-relationships with particular focus on
biostratigraphic new data concerning nannofossil associations, allowing to redefine their age model. All this accompanied
by a check for the compositional-petrographic data of the sandstone lithologies, has allowed to insert each section in a
coherent basin-chain setting, obtaining an evolutionary model of the chain-foredeep of the NA during the late Oligoceneearly
Miocene. The main conclusive remark is the consolidation of the eastward migrating depositional system model,
where the foredeep basin, split in several minor sub-basins, due to the pulsating thrusts of the advancing orogenic wedge
was structured through two main stages. A first stage during the Chattian-Aquitanian with the development of partially
different inner turbidite systems (Mt. Modino Sandstones in a frontal thrust-top basin, Macigno, Torre degli Amorotti
System of the Mt. Cervarola Sandstones, Gova Sandstones, etc.) and a second stage developing the wide Mt. Cervarola
Sandstone Complex. The two stages result to be separated by the tectonic Tuscan Phase with a deformative acme during
the earliest Burdigalian, leading to the development of the Sestola-Vidiciatico Unit and the following involvement of all
the sequences in the unit stack
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