1,721,011 research outputs found
Selection criteria of mobile lifters in the hospital setting. [Criteri per la selezione di sollevatori mobili in ambito ospedaliero.]
No full textThe manual handling of patients with limited mobility represents the major cause of musculoskeletal injury to the spine in paramedical health care workers. Within the hospital, the more complex procedures of patient transfer often require the use of mobile hoists. The aim of this paper is to describe the basic criteria for the selection of such hoists. The main characteristics of a hoist are its stability, the sling attachment, the speed of operation, range of movement of the spreader bar, safety of the operation being performed, patient comfort, the physical effort required on the part of the health care worker, manoeuvrability and simplicity of use. Important organizational-structural features to evaluate include: the type of patient normally present in the unit concerned, the specific movement to be performed, the structural characteristics of the environment, and the work organization of the personnel
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
A Comparison among Cooperative Spectrum Sensing Approaches for Cognitive Radios
No full textIn this paper, a comparison among different cooperative spectrum sensing approaches is provided. It is assumed that the secondary terminals autonomously perform local spectrum sensing and forward their decision to a fusion center. It combines the received data to obtain the global decision, i.e. the presence or the absence of the primary user in the monitored environment. In particular, three fusion rules, i.e. OR, AND and optimal, are compared in terms of required processing capabilities at the fusion center and at the secondary terminals, and required control channel capacity. Numerical simulations in a practical heavy multipath environment are provided to compared the performances of the considered approaches
Neural networks mode classification based on frequency distribution features
No full textThe growing number of new emerging wireless standards is creating regulatory problems in allocating the unlicensed frequencies. A possible solution for increasing the frequency re-usage within the framework of info-mobility cellular systems is the joint exploitation of Smart Antennas and Cognitive Radio. In the paper a Mode Identification algorithm, based on frequency distribution features and multiple neural network classifiers, for a Cognitive Base Transceiver Station is presented. Simulated results, obtained in a simplified framework, will prove the effectiveness of the proposed approach
Psychometric evaluation of the Italian version of the Berg Balance Scale in rehabilitation inpatients
No full text"BIO-INSPIRED COGNITIVE RADIO FOR DYNAMIC SPECTRUM ACCESS"
No full textDynamic spectrum access (DSA) has raisedthe attention of industrial and academic researchers due to the fact thatit is seen as a technologyable to overcome the lack of available spectrum for new communication services.In particular, autonomic DSA (ADSA) systems are indicated as a solution to spectrumscarcity caused by the current command and control allocationparadigm. However, ADSA requires a higher level of reconfigurability with respect totraditional wireless systems. In this context, one of the technologies thatcan provide such flexibility is the promising cognitive radio (CR).In an ADSA scenario, CR should sense the spectrum to find the resources unused byprimary (licensed) users, which could then be exploited by secondary(unlicensed) CR users to increase the overall system efficiency.In this chapter, a comprehensive overview of CR applications to ADSA is carried out;in particular, attention is paid to the potentialities of autonomic bio-inspiredapproaches, and on their advantages in the solution of the challenges ofADSA systems
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