1,721,037 research outputs found
Boundary behavior of generalized Poisson integrals on buildings of type A~2
No full textLet Î be an affine building of type A~2and Ω its maximal boundary. We prove that, for every function fâ L1(Ω) , restricted convergence of the normalized generalized Poisson transform PÏf/ PÏ1 to f holds almost everywhere
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
Early Detection of Myocardial Damage: A Multimodality Approach
No full textCardiovascular diseases are possible complications of antineoplastic treatment and may lead to premature morbidity and mortality among
cancer survivors. A symptom‐based follow‐up is ineffective, and there are growing evidences that early detection of myocardial damage in
patients treated with antineoplastic drugs is the key point to prevent the occurrence of damage and improve the prognosis of these patients.
Different techniques have been proposed to monitor cardiac function in oncologic patients such as cardiac imaging (echocardiography, nuclear
imaging, and cardiac magnetic resonance) and biomarkers (troponin and natriuretic peptides). The European Association of Cardiovascular
Imaging/American Society of Echocardiography consensus document encourages an integrated approach to early detec
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
Measurement Accuracy of an Upper Limb Tracking System Based on Two Hillcrest Labs BNO080 IMU Sensors: An Environmental Assessment
No full textThis paper presents an analysis on the accuracy of a two-IMU (Inertial Measurement Units) device. The device consists in two identical wired BNO080 sensors connected to a Central Control Unit, with the aim of developing a remote tracking tool for upper limb movements. The control unit collects the data from the sensors, ensuring the time synchronization, and retransmits the information to an external device. From the quaternions representing the orientation of the two sensors, the relative orientation can be calculated. A series of tests has been carried on using a robotic arm, allowing to perform repeated movements. Using this setup, the repeatability of the measurement, the accuracy and the measurement drift were then evaluated. The parameters were evaluated in conditions of variation of speed, position and acceleration compatible with those of a person. In a second stage, the sensors have been inserted into a wearable garment and used by a human in a real scenario, allowing the evaluation of possible sources of disturbance due to the environment, e.g. magnetic fields generated by electronic devices. The results show a good reliability of the relative orientation measurement, with an uncertainty generally smaller than 6 degrees per eulerian angle
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