1,720,975 research outputs found
Fatigue effects of embedding electric vehicles Charging Units into electrified road
Full text linkA charging infrastructure network for Battery Electric Vehicles (BEV) is more than an option for the transportation scenarios of the next years. From a pavement engineering point of view, this network consists in prefabricated Charging Units (CU) embedded into the road pavement, generating additional questions related to the structural life of the pavements in which the CU are located. Moreover, even if in the available literature few studies describe the structural response of e-road, the long-term performances of pavements are not fully investigated. This is the reason why this research analyzes fatigue behavior of electrified road (e-road) in comparison with traditional road (t-road). In particular, the study is devoted to identifying the number of critical load cycles leading to failure an e-road pavement. As a second stage, the theoretical and numerical results are verified applying the findings obtained during the first stage of the research to a real case study: Viale Forlanini in Milan (Italy), which is an important two carriageway road connecting the city center to the Linate airport. As a result of these analyzes, interesting outcomes were obtained regarding the fatigue effects of embedding CU into road pavement, estimating the service life and demonstrating that CU seems to be compatible with the structural effectiveness of the pavement, as also confirmed by the case study results
Bituminous Mixtures with High Environmental Compatibility: Laboratory Investigation on the Use of Reclaimed Asphalt and Steel Slag Aggregates
No full textRecycling waste materials is a key issue in sustainable road pavements construction. This is the reason why the efforts of the scientific and technical community are addressed in studying sustainable solutions for producing bituminous mixtures. As a result of these efforts, the use of Reclaimed Asphalt (RA) is becoming a standard practice, even if in Italy the use of RA is limited to a certain content. So the increase of RA content appears to be the new border of the research in this field. At the same time, the scientific literature demonstrates that other recycled materials, such as Steel Slags Aggregates (SSAs), can be used with satisfactory results. To go a step further, the research herein described focused on the evaluation, at the laboratory scale, of the effects of both high amounts of RA (from 15 up to 60% by weight) and RA plus SSAs (from 55 up to 71% by weight). Compaction properties, volumetric characteristics and mechanical performances were investigated. Even if the obtained results are at the laboratory scale and keeping in mind that the research needs an on-site validation, the investigated mixtures seem to be promising for a future development of bituminous mixtures with high environmental compatibility
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
Structural Analysis of Bituminous Road Pavements Embedding Charging Units for Electric Vehicles
No full textAmong the arising technologies for electric mobility, the on-the-road (dynamic) vehicle charging appears to be a promising solution in order to overcome the current limitations of the electric vehicles’ batteries. For achieving this purpose, the use of Charging Units (CUs) embedded into the road pavements is needed. These CU are made of a cement concrete box in which the electric technologies are allocated. However, the CUs have not to be detrimental for the structural behavior of the pavements, including their load resistance performances. The lack of scientific studies in the available literature demonstrate that the topic is not fully investigated. Moreover, the available scientific papers assume the CU as a solid, not considering it as a box (having a void for the electric technologies). However, it is a key factor for the pavements’ structural response. This is the reason why this research was devoted to assess the structural response of electrified roads (e-roads), in which the CUs are embedded, compared to the traditional roads (t-roads), using a Finite Element Modelling (FEM) approach. Therefore, the main scope of this study is the optimization of the void dimensions into CU from a pavement structural performances point of view. The optimization included different cross-sectional geometries and load positions. As a result of these FEM investigations, a first set of interesting outcomes were obtained, as shown and discussed in the paper
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
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
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