1,720,965 research outputs found
Exploring Post-traumatic Growth in Parkinson's Disease: A Mixed Method Study
No full textPost-traumatic growth (PTG) may favor the psychological adaptation to chronic illnesses. However, few studies investigated PTG in Parkinson’s Disease (PD). This study aims to investigate PTG in patients with PD, by exploring disease-specific features and assessing its impact on distress, well-being, and quality of life. A mixed methodology with a convergent parallel design was used. 54 patients were classified according to their level of PTG (low PTG, medium PTG, and high PTG). PD patients with high PTG showed a more positive psychological adaptation and less distress when compared to patients with less PTG. Forty-nine patients were interviewed and their transcripts were analyzed using Thematic Analysis. The emerged themes confirmed the traditional dimensions of PTG model, but a specific theme connected to a new body awareness was identified. Patients with high PTG were more likely to report positive statements following PD diagnosis, particularly concerning spirituality and maintaining a good physical functioning. PTG presents peculiar characteristics in PD and it may favor a better psychological adjustment following the diagnosis
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
Numerical investigations on the aerodynamic influence of eroded leading-edge geometry on boiler fan performance
No full textAxial fans handling high temperatures or corrosive gases in power stations are exposed to erosion phenomena that result in increased surface roughness or modifications of blade section shapes. Erosion results in the reduction of blade chord and effective camber, thus altering the turning flow and the actual blade load. Consequently, aerodynamic performance gradually reduces, and in some circumstances reduces drastically as the rotor's structural integrity is undermined. The present paper investigates the influence of leading edge geometry in a high pressure boiler fan designed for forced-draft application in coal fired power plant. To this end, a comparative analysis considers: (i.) the datum blade section, (ii.) a modified blade. The datum blades represent the original blade geometry. The modified blade represents eroded blade geometry, as measured after in-service operation including suction and pressure side wear. The study concludes with (iii.) a re-shaped blade. The authors carried out the simulations using an in-house developed multilevel parallel, finite element RANS solver, with the adoption of non-isotropic turbulence closure. The authors investigated rotor aerodynamics by comparing the pressure fields and the boundary layer development on the blade suction surfaces that limit the pressure rise and flow turning
CFD analysis of ventilation systems for gas turbine enclosures
No full textThe fans performance are assessed in configurations according, traditionally, to international standards such as ISO-5801. Similar reference to the so-called standardised airways is used in the design process of industrial fans which provide the ISO test-bench. In recent years, the objective of fan optimization has, in most cases, been re-focused on the optimization of the fan-system coupling in a view to solve for the dynamics of such coupling (either mechanically or aerodynamically). This has been true when ventilating systems are equipped with components such as bended inlets, spinner cones, gravity dampers, that could be responsible for influencing the fan aerodynamic response. In all these cases, when using CFD, accounting for a real fan geometry inside the domain would be extremely expensive from a computational point of view and too slow for industrial purposes. When the objective under investigation is the whole ventilation system, it is necessary to account for the single components by means of synthetized methodologies. In particular, fans can be accounted for by simple pressure rise or actuator disks that synthetize their aerodynamic response in the systems of ducting by means of body forces inside the momentum equation. In the paper the methodology is briefly presented and applied to resolve the fluid-dynamics behaviour of two gas turbine ventilation systems
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
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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