1,720,967 research outputs found
Performance assessment of a solid desiccant air dehumidifier
No full textThe presence of moisture in the air along with temperature has a long term and
devastating effect on man and material. One way to create a low humidity
environment is by using a solid desiccant wheel system. In the present work, an
experimental analysis has been carried out under steady-state conditions to
investigate the effects of different operating parameters on a solid desiccant wheel
system performances. An experimental rig consists of an FFB300 air dehumidifier system
was constructed. A parametric investigation was carried out to examine the effects of
the reactivation air inlet temperature and process air outlet velocity on the thermal
effectiveness, dehumidification efficiency, and moisture removal rate of the desiccant
wheel system. The analysis shows that both thermal effectiveness and dehumidification
efficiency decrease with the increase of the reactivation air inlet temperature, by 2.5
% and 43 %, respectively. Likewise, when the process air outlet velocity increases both
performances criteria reduce by 10 % and 28 %, respectively. The moisture removal
rate increases significantly by 30 % as the reactivation air inlet temperature increases.
However, the process air outlet velocity has no significant effect on the moisture
removal rate
Stability of cementless hole and non-hole hip prosthesis
No full textLink to publisher's homepage at http://ieeexplore.ieee.org/Lacking of stability known to be as one of the
principal factors contributes to loosening of hip prosthesis.
Initial stability of the hip prosthesis related with the magnitude
of relative displacement at the femoral bone-prosthesis
interface. The present study aimed to investigate the effect hole
as additional features on the initial stability. 3D finite element
model of femur and prosthesis developed based on CT dataset of
a Malaysian patient. Simulations of normal walking condition
performed on the models to investigate the relative displacement
between the bone and prosthesis interface. The simulations
results report that additional hole as a feature on the proximal
region of prosthesis, produce highest relative displacement at
the proximal region on the medial side
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
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe 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
- …
