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A two-step optimisation method for the preliminary design of a hybrid electric vehicle
No full textIn the present investigation an innovative procedure to design a hybrid electric vehicle (HEV) is proposed, based on two steps: optimisation and decision-making. Both steps require a multi-objective approach due to the many goals to be taken into account in the design of a complex system like an HEV. The method has been applied to the preliminary design of the powertrain and tuning of the control strategy of a series hybrid vehicle, simulated with a Matlab-Simulink code. The hardware parameters included the number of axles in the vehicle, number of electric motors per axle, and type and quantity of energy storage system devices (batteries and/or electrochemical capacitors). The control parameters are related to fuel economy conversion factors and the maximum and minimum state of charge allowed to the secondary energy storage systems. Several attributes of performance and fuel consumption evaluated with respect to seven driving cycles were considered as optimisation goals. © 2008, Inderscience Publishers
Andamento dei profili audiometrici nel tempo in due gruppi di lavoratori del settore petrolchimico
No full textA Two-step Optimization Method for the Preliminary Design of a Hybrid Electric Vehicle
No full textIn the present investigation an innovative procedure to design a Hybrid Electric Vehicle (HEV) is proposed. The procedure is based on two steps: optimization and decision-making. Both steps re-quire a multi-objective approach due to the high number of goals to be taken into account in the de-sign of a complex system like a HEV.
The method has been applied to the preliminary design of the powertrain and the tuning of the con-trol strategy of a series hybrid vehicle, simulated with a Matlab-Simulink code. The hardware pa-rameters included the number of axles in the vehicle, the number of electric motors per axle, the type and quantity of energy storage system devices (batteries and/or electrochemical capacitors). The control parameters are related to the fuel economy conversion factors and the maximum and minimum state of charge allowed to the secondary energy storage systems.
Several attributes of performance and fuel consumption evaluated with respect to seven driving cy-cles were considered as optimization goals
Caratterizzazione di lattobacilli per l'attività antagonista nei confronti di Helicobacter pylori
No full text
Characterization of Lactobacillus strains for antagonistic activity against Helicobacter pylori
No full textGoing 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
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