1,721,032 research outputs found
Optimization of Zero-Pole Interlacing in Discrete Approximations of Fractional Order Operators s^nu
No full textA Comparison Among Different Microcontroller Implementations Of Fractional Order Controller
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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
Active building envelopes. An integrated solution for solar cooling and heating
No full textABSTRACT: Solar thermal collectors are traditionally applied on roofs of low buildings to cover the domestic hot
water and heating demand. Nevertheless, for high buildings the roof surface is not sufficient to satisfy such demands
and consequently the entire envelope should be exploited.
In this study an innovative system of solar thermal façade has been designed for the application on an existing
apartment tower in order to satisfy the energy needs for winter heating and summer cooling. The tower, built in the
80s, is placed in Sicily, a region which may be considered representative of mild Mediterranean climate.
The proposed system consists of evacuated tube solar collectors assembled on modular panels, designed to reduce the
overall costs.
Also the aesthetic instances have been properly considered, taking care of both the design and the composition of the
panels on the façade.
Depending on specific requirements, each panel can be flexibly equipped with optional accessories, such as insulation
layers, sun-tracking mirrors, PV-modules, maintenance and cleaning devices.
Results show that this active façades can be effectively used in the case study, that is representative of high rise
residential buildings, but it may have convenient application also on new constructions.
Keywords: active façade; evacuated tube solar collectors; Mediterranean climate; modular panel
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
A Scalable Fractional Order Model for IPMC Actuators
No full textIPMCs are a novel class of composite materials capable of electromechanical reversible transduction. It has been suggested in literature that they can be modeled by using fractional transfer functions. In this paper a gray box approach is used to identify IPMC actuators. Moreover the proposed transfer functions are ruled by using the device geometrical parameters, in such a away to guarantee the control of the transducer behavior during the design phase. Experimental validation of the proposed approach is reported
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