1,720,959 research outputs found
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Get PDF“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
Get PDFWe 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
Thermoeconomic analysis of LEGO®-Like Reconfigurable Machine Tools
No full textManufacturing is peculiar to the mankind. The evolution of man and society welfare has been essentially driven by technology. In particular the actual society and the occidental Nations economies depend on technology and manufacturing. However, each economical operation, especially production, is carried out by transformations that thermodynamically increase the entropy of the global system. In this paper an approach based on the ecological economics is used to analyse the actual manufacturing technologies and discuss the potential enabled by the proposed LEGO®-Like Reconfigurable Machine Tools
An improved impedance-based damage classification using Self-Organizing Maps
No full textThe identification and severity of structural damages, especially in the early stage, is critical in structural health monitoring (SHM) systems. Among several approaches used to accomplish this goal, the electromechanical impedance (EMI) technique has taken place within non-destructive evaluation (NDE) methods. On the other hand, neural networks (NN) based on self-organizing maps (SOM) has been a promising tool in many engineering classification problems. However, there is a gap of application regarding the combination of the EMI technique and SOM NN. To encourage this, an enhanced EMI-based damage classification method using self-organizing features is proposed in the present research paper. A SOM NN architecture was implemented whose inputs were derived from representative features of the impedance signatures. As a result, self-organizing maps can be used as an effective tool to enhance the damage classification in EMI-based SHM applications. For the present application, the results indicated a promising and useful contribution to the grinding field
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe 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 study on the drilling process of hemp/epoxy composites by using different tools
No full textAs result of the increasing environmental awareness, the interest of bio-composite materials is growing rapidly in the last years in order to use them in various engineering application fields.
For some of these applications, drilling is often required to facility the assembly of the parts and to make final products. However, drilling can induce a number of problems such as delamination, pull-out and strength reduction depending on the used cutting tools and cutting process parameters that can negatively affect the final product properties.
Therefore, in order to reduce these problems on hemp/epoxy composites the aim of this study is to evaluate the effect of both the drilling parameters and tools on the drilling forces and delamination factors
Internet of Things Platform for Real-Time Intraoral Forces Monitoring
No full textIn the Internet of Things era, medical devices shall be miniaturized and connectable to the global network for exchanging patient data. In this work, the miniaturization of a device for wireless intraoral forces monitoring is presented. Strain gauges are used as force sensors detecting tongue and lips activities.
Signal elaboration has been demanded to an STM32NUCLEO-F401RE board while wireless data transmission using Bluetooth® Low Energy standard protocol is obtained by means of a XNUCLEO-IDB04A1 board. The circuit has been further miniaturized using a SoC based on Nordic nRF51422 that features an ANT and Bluetooth® low energy transmission and an ARM Cortex-M0 core.
The final device shows a reduced dimension and the ability to transmit data wirelessly, without the use of external cables normally used in state-of-the-art intraoral monitoring devices
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