1,721,016 research outputs found
Panel e paper sul cinema alla conferenza annuale dell'American Association of Italian Studies (AAIS) del 2012
No full textA Force feedback System for Steer-by-Wire Applications Based on Low-Cost MR Fluids
No full textIn the automotive research scenario, the main purpose of a steer-by-wire system is the elimination of all mechanical connections between wheels and the steering wheel. The driver gets just a virtual and configurable feedback through the steering wheel, which becomes a stand-alone component. Among the emerging alternatives, magnetorheological (MR) fluids exhibit interesting properties that could well fit for safe and reliable force feedback systems. Through the collected data, this paper offers the essential information for the realisation of a force feedback device for steer-by-wire application. The paper includes the design and test of a pre-industrialised system, exploited for the measurements of low-cost, homemade MR fluids. Experimental results and their discussion conclude the paper
Repetitive Control and Virtual Bleeder Resistor for AC Generator Sets with Harmonic-Sensitive Loads
No full textLow and medium power full-digital AC generator sets are
largely used in both industrial and civil fields. During the last
years, more demanding applications for AC generators have
emerged. They require more power combined with a cleaner
voltage source. Consequently, particular care is requested for
both the mechanical and electrical design of a new AC
generator set, as well as a keen choice of the digital control
strategy. This paper presents a control technique suitable for
gasoline engine-driven AC generator sets, which minimises
the voltage harmonic distortion by means of repetitive
control, while assuring good performances in a very wide
load range by means of a virtual bleeder resistor (VBR).
Simulation and experimental results confirm the effectiveness
ofthe proposed strategy
S. Marco's Church in Vercelli: the shape model for the reutilize. LIDAR project in a simple architectural space survey
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
Identification of mechanical load for electrical drive commissioning - labelling machine case study
Full text linkThe paper presents a result of the system identification theory applied to an industrial machine. The case study was a labelling machine driven by a permanent magnet synchronous motor drive. The identified system model has been used to tune the closed-loop speed control of the drive. A brief recall of the basic principles of power spectral density applied to model identification, hints for the practical implementation and experimental results are included in the paperQC 20181001</p
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
- …
