1,720,961 research outputs found
Wereable rectangular patch antenna for ICT application: Dosimetry evaluation
No full textIn this work proposed study the design of different materials in a particular antenna wearable application at frequency 900 MHz. The particular antenna substrates allow direct integration into garments. The antenna is a rectangular patch, analyzed different dimension and characteristic that typology of materials. The goal of this paper is evaluate the dosimetry effect in the body when we use this particular substrates
RFID sensor network for workplace safety management
No full textLarge industrial environments are inherently complex systems to be monitored and controlled, given the presence of vehicles, people and industrial plants. In a context dominated by strict regulations for workplace safety, systems for monitoring and preventing workplace risks can have a particular importance. This paper describes the work in progress on designing and implementing an RFID-based sensor network for workplace safety management. The proposed system is based on Body Area Networks and passive RFID tags and sensors. The goal of the proposed system is to offer a detailed, constantly updated overview of an industrial environment in terms of workplace safety
A triple-band WLAN antenna
No full textThis paper presents a small truncated waveguide fed by a microstrip line through a transverse coupling slot for multi-band WLAN applications. The proposed radiating element allows to obtain a high radiated power, with a very low cross-polar component in the radiated field, with a -10 dB bandwidth that covers the required frequencies for multi-band WLAN applications (5.2/5.4/5.8 GHz)
A wire antenna for broadband WLAN and Wi-Fi applications
No full textThis paper presents a wire antenna for multi-band WLAN application, designed using the Structure-Based Evolutionary Programming, and having a very simple geometry. The antenna has been analysed with NEC-2 during the evolutionary process, and the outcome of the procedure shows a very good performance, with a -10dB bandwidth that covers the required frequencies for multi-band WLAN applications (2.4/5.2/5.8 GHz) and beyond, and an end-fire gain greater than 11 dB
Dosimetry and biological effect evaluation on electromagnetic model of head
No full textWe describe the analyses, the biological effect and dosimetry in the skull product from the work sensors used in an industrial workplaces. For these evaluations we use a CST electromagnetic software
Control system for workplace safety in a cargo terminal
No full textLarge industrial environments and specifically cargo terminals are inherently very complex systems to be monitored and controlled, given the presence of vessels, vehicles, people and industrial or commercial plants. In this context, dominated by strict regulations for workplace safety, a centralized control system for monitoring, reporting and preventing workplace risks can have a particular importance. This work describes the concepts of a real-time control system for acquiring and processing information for the continuous monitoring of workplace safety conditions. In the proposed system, we make use of specialized wearable sensor networks and specific aggregation methods, CCTV cameras combined with pattern recognition algorithms and data networks. The goal of the control system is to offer a detailed, constantly updated overview of the port's situation in terms of workplace safety
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
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