1,720,984 research outputs found
WEY Francis Alphonse
No full textHavelange Isabelle, Huguet Françoise, Lebedeff-Choppin Bernadette. WEY Francis Alphonse. In: , . Les inspecteurs généraux de l'Instruction publique. Dictionnaire biographique 1802-1914. Paris : Institut national de recherche pédagogique, 1986. p. 651. (Histoire biographique de l'enseignement, 11
WEY Francis Alphonse
No full textHavelange Isabelle, Huguet Françoise, Lebedeff-Choppin Bernadette. WEY Francis Alphonse. In: Havelange Isabelle, Huguet Françoise, Lebedeff-Choppin Bernadette. Les inspecteurs généraux de l'Instruction publique. Dictionnaire biographique 1802-1914. Paris : Institut national de recherche pédagogique, 1986. p. 651. (Histoire biographique de l'enseignement, 11
Optimal Operation of an Innovative Electric Vehicle Charging Hub directly fed by Renewables
No full textThe reduction of Green House Gases (GHGs) emissions has been the top priority of the European Union (EU) in recent times. The increase in use of Electric Vehicles (EVs) to combat climate change is viable only with the use of Renewable Energy Sources (RESs) to power them. Since the Paris Agreement in 2015, the integration of RESs into the charging infrastructure has increased in the EU. The increasing market share of EVs in various categories has called for immediate changes in the EV charging infrastructure and in the operation of charging hubs. This paper aims to present an Energy Management System (EMS) to efficiently manage an EV charging hub fed by RESs, reducing the daily costs of operation and GHG emissions. The mathematical model of the EMS is developed in Matlab as a Mixed Integer Linear Programming (MILP) model. The MILP-based EMS is applied to the real-world case of an innovative EV charging hub located in the Ligurian region of Italy and the results of the optimization are reported
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
Optimal allocation and sizing of electric vehicle charging infrastructure for green last-mile logistics
No full textThe transition towards electric mobility is being promoted by the European Union as a countermeasure to the greenhouse gas emissions in road transportation. Consequently, the adoption of electric vehicle fleets for freight movement and last-mile deliveries is in progress: this transition is viable if sufficient electric charging infrastructures are available within their operating routes. However, allocation of chargers at city centres may pose problems related to congestions in the power distribution network during peak hours, along with possible peaks in renewable energy sources production. This paper presents a mathematical programming formulation for the optimal allocation and sizing of an electric vehicle charging infrastructure within an urban area in which a fleet of electric vehicles for freight delivery operates. The considered urban area is divided into peripheral and internal zones, with the former able to host depots and large electric vehicle charging hubs and the latter hosting smaller electric vehicle charging areas. The optimization problem, formulated as a mixed-integer linear programming problem, aims to allocate and size the photovoltaic units, the battery energy storage systems and the electric vehicle chargers to be installed in each zone, depending on local requirements, while allowing the electric vehicle fleet to satisfy the predefined logistic demand in the considered zones. The model is applied to a delivery fleet operating in the city of Milan, Italy, considering various scenarios and making some sensitivity analyses for evaluating the impact of economic parameters on the optimal configuration of the facility. The results show that photovoltaic units are a viable solution towards sustainable logistics, while the installation of battery energy storage systems is not always favorable. Quick alternating current chargers and vehicle-to-grid chargers are generally preferable, while fast direct current chargers are economically viable only under certain conditions
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
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