1,720,962 research outputs found
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
Wind Engineering Science and its role in optimising the design of the built environment
Get PDFThesis (DEng)--Stellenbosch University, 2016.ENGLISH ABSTRACT: Wind Engineering and Building Aerodynamics constitutes a relatively recent technical science (spanning the last sixty years or so), which integrates three principal domains and the related pools of knowledge – namely wind physics and statistics, the wind’s action on the built environment and analyses of its consequences (e.g. loading, deformation or damage). The overarching aim and reason for the science is to gain an understanding and to quantify a largely unpredictable stochastic weather phenomenon and its effects on the built environment, including people. The information which is derived permits the researcher to proliferate and implement modern findings, mainly in the structural engineering but also environmental and architectural design domains.
This dissertation presents an overview of wind-engineering research activities and outputs of the author, which span more than thirty years of his professional career. During that time the author has been privileged to work and interact with a number of prominent wind-engineering experts and has been exposed to a diverse spectrum of research topics and studies. These involved wind-tunnel modelling, scientific analyses of wind damage and disasters, full-scale measurements, development of predictive models, design guides and standards, as well as consulting inputs to the industry.
Apart from personal research, the author was involved in a number of local and international activities, committees, conferences, lectures, presentations, and has provided editorial inputs to journals and conferences, as well as co-supervisions of postgraduate studies.
Extensive referencing is made to a range of published outputs. Furthermore, technically challenging and unpublished information of scientific significance is highlighted. The benefits of a comprehensive and multifaceted research process, involving a team of committed and talented people, are demonstrated.AFRIKAANSE OPSOMMING: Wind Ingenieurswese en Gebou-Aerodinamika verteenwoordig ʼn relatief jong tegniese wetenskap, met ʼn lewensspan van ongeveer 60 jaar. Dit verteenwoordig die integrasie van drie hoofkennisvelde, naamlik wind fisika en statistiek, die oordrag van kragte na die bou-omgewing en analise van die gevolge hievan (te wete belasting, vervorming of beskadiging). Die oorsigtelike doelwit wat met hierdie wetenskap beoog word, is die verwerwing van kennis en insig, asook die kwantifisering van grootliks onvoorspelbare stogastiese weerverskynsels en die effekte daarvan op die bou-omgewing, insluitend op mense. Die inligting wat so verwerf word, vind toepassing hoofsaaklik in struktuuringenieurswese, maar ook op gebiede van omgewings en argitektoniese ontwerp.
Hierdie verhandeling verteenwoordig ʼn oorsig van navorsingsaktiwiteite en uitsette op die gebied van Wind-Ingenieurswese deur die outeur oor ʼn bestek van meer as dertig jaar van sy professionele loopbaan. Die outeur was bevoorreg om gedurende hierdie periode interaksie te hê met ʼn aantal vooraanstaande Wind-Ingenieur spesialiste en was ook blootgestel aan ʼn diverse spektrum van navorsingonderwerpe en studies. Hierby word onderwerpe ingesluit soos windtonnel modellering, die wetenskaplike ontleding van windskade en rampe, volskaalse metings van belastings, voorspellings-modellering, ontwerp-riglyne en standaarde sowel as raadgewende insette aan die bedryf.
Benewens sy navorsingsaktiwiteite was die outeur ook betrokke by nasionale en internasionale aksies, met insluiting van komitees, konferensies, lesings en aanbiedings, verskaffing van redaksionele insette aan joernale en konferensie verhandelings, sowel as mede-studieleiding van nagraadse studies.
Omvattende sitering word na ʼn stel van gepubliseerde uitsette in die verhandeling gemaak. Daarbenewens word tegnies uitdagende en ongepubliseerde inligting wat van wetenskaplike belang is, beklemtoon. Die voordele van ʼn omvattende en multidissiplinêre navorsingsproses waarby ʼn span van toegewyde en talentvolle lede betrokke is, word gedemonstreer.Doctora
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
Assessment of existing structures under climate change
Get PDFAssessment of the influence of human activities on recent, current, and future global and regional climate conditions and extremes has advanced sufficiently to provide a reasonable measure of its impact across the globe. The lack of concurrent adaptation of the design base for load bearing structures results mainly from the absence of a clear signal that climate change will have a significant effect on the climate actions that are accounted for in the structural design basis. The recent IPCC assessment of the physical science basis of climate change reports significant advances in observing and projecting changes in weather and climate extremes due to human influences. This provides an opportunity to reassess projections of future climate action conditions. Whilst the IPCC assessment confirms previous indications that, for example extreme wind will respond moderately globally, improvements in understanding and projecting changes show that trends will be overshadowed by uncertainties. The implication is that the design base will need to account for increasing uncertainties as climate actions are projected into the future, over the service life of existing structures, as well as those designed to current standards. The design base consequently in advance need to reflect continuous changes of existing structures
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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