1,721,341 research outputs found
Walking in a smart city: Investigating the gait stabilization effect for biometric recognition via wearable sensors
No full textTechnology is expected to enhance life in a Smart City: everything is intelligent, digital, interconnected, and inclusive. In addition, all everyday activities are facilitated. This paper presents a biometric authentication strategy based on gait dynamics. The produced signals are acquired by the common mobile device accelerometers (especially those embedded in smartphones). The user has nothing to do but normally approach a controlled entry: authentication is automatically triggered by ambient elements (beacons). This transparent protocol entails user awareness of the authentication since the user has to install a suitable app, therefore it does not cause any covert privacy violation. In addition, it allows avoiding any explicit, possibly cumbersome authentication procedure. Last but not least, the use of a sensor directly embedded in everyday users’ equipment supports an efficient approach without the need for further hardware
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
Ultrasound Medical Imaging Techniques
No full textUltrasound (US) imaging for medical purposes has been increasing in popularity over the years. The US technology has some valuable strengths, such as it is harmless, very cheap, and can provide real-Time feedback. At the same time, it has also some drawbacks that the research in this field is trying to mitigate, such as the high level of noise and the low quality of the images. This survey aims at presenting the advances in the techniques used for US medical imaging. It describes the studies on the different organs that the US uses the most and tries to categorize the research in this field into three groups, i.e., segmentation, classification, and miscellaneous. This latter group includes the works that either provide aid during surgical operations or try to enhance the quality of the acquired US images/volumes. To the best of our knowledge, this is the first review that analyzes the different techniques exploited on a large selection of body locations (i.e., brain, thyroid, heart, breast, fetal, and prostate) in the three sub-fields of research
A Natural Interaction System for Medical Training through VR Technology
No full textVirtual Reality (VR) technology is rapidly gaining traction as a pivotal tool in medical education, offering immersive and interactive learning environments that show considerable promise, especially in anatomy training. Its ability to simulate complex anatomical structures in a three-dimensional space allows for a deeper understanding and visualization that is difficult to achieve through traditional two-dimensional methods. This study evaluates a VR-based training system that enhances anatomical learning through principles of Human-Computer Interaction (HCI), e.g., hand-tracking technology to avoid the need for traditional controllers. The effectiveness and usability of this system were assessed using the System Usability Scale (SUS), with additional analysis of whether demographic factors such as age, gender, and prior VR experience influence the outcomes. The high achieved results reflect user-friendliness and potential educational effectiveness across diverse user groups. The intuitive nature of the proposed natural interactions significantly enhances the accessibility and engagement of learners, demonstrating that this technology could make advanced medical training more inclusive and broadly accessible. This suggests promising avenues for further research into its application in more complex anatomical and procedural training, aiming to exploit VR's potential in medical education as a future standard
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
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
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