1,720,952 research outputs found
Bio-based FRP structures: A pedestrian bridge in Schiphol Logistics Park
No full textConventional composite plastics that are widely used in the building industry, are becoming more and more criticized in regards with their unsustainable petrochemical resources and their increased embodied energy. Under the global environmental awareness of the recent years, new polymeric materials based on renewable natural resources have emerged. This master thesis investigates the potential of bio-plastics and natural fibres to be used in fibre-reinforced composites for load-bearing and durability demanding applications. The research is applied on the real scenario of a short-span pedestrian bridge in a logistics park close to Amsterdams International Airport.Sustainable Design Graduation Studio, Structural DesignBuilding TechnologyArchitecture and The Built Environmen
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
A circular biobased composite facade: Reseach on a high performance and circular application of biobased composite on a facade
No full textThe building industry produces 40% of the total amount of waste in the Netherlands and almost all of this waste leads to landfill loading. This has been the start for this research into a circular biobased composite façade. The question for building materials is expected to increase in the future and some common used materials impend to run out, therefore biobased materials could provide a solution. Thereby is circularity often called as a solution for the material problems because when materials can keep performing, there is no need to discard them. This thesis studies a high performance and circular application of biobased composite on a facade. During the research the focus was on office buildings in the Netherlands. Biobased composite has previously been used for bridge design, and a few façades have been developed of which only one has been built today. These designs regard quite simple facades without windows or insulation, while for office buildings (especially the higher buildings) extensive safety requirements are obliged. Because biobased composite is a material for which not many tests have been performed, the information, especially regarding safety requirements, is still scarce. With help of specialists of DGMR a set of requirements has been defined. Besides the safety requirements the research focusses on different production methods and their environmental impact. For circularity, different scenarios are defined, which are reuse, adaptation and recycling. Especially the connection methods between different parts are very important regarding circularity, because they define whether a part can be reused, adapted or recycled. To establish the durability of coated and uncoated biobased composite for external use (when exposed to weather conditions as any facade is) two different material tests have been performed. The first test focusses on extreme temperatures while the second test simulates freeze-thaw cycles. Eventually different common building products and facade typologies are compared to their biobased concept in terms of weight, thermal insulation and shadowcosts. Thereby the circular scenarios of both the original element as the biobased concept are compared. Overall it can be concluded that the durability of biobased composite is quite good when a safety margin for the bending stiffness is taken into account. The environmental impact is at this moment not better than that of most common building materials, therefore the shadowcosts require improvement. The materials does offer good options for designers, however requires more research and testing before large-scale application is possible.The results of the research offers information on biobased composite useful for designers. Different subjects are circular design, a comparison between the environmental impact of common used building materials and manufacturing of biobased composite. Architecture, Urbanism and Building Sciences | Building Technolog
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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