1,720,954 research outputs found
Reconstructing vaults 2.0: The potential of cast glass for reconstructing historical buildings
No full textThis thesis is about reconstructing historical vaults with cast glass. The vision is to design a complete dry-assembly cast glass arch vault where the Notre Dame de Paris is the chosen case study. The main question is: To what extent can a historical masonry arch vault be reconstructed by using cast glass components? The method is based on literature research and FEA simulations. The thesis contains three main phases of the research. First, the background, problem statement and research objectives/ questions are discussed in the introduction. Then, the complete literature research where heritage, arch vault structures, structural glass and cast glass in structures will be discussed. The third part describes the complete design phase including the criteria and final design. The thesis finishes with a conclusion and discussion chapter. The main results of this thesis are that a historical arch vault can be reconstructed from cast glass, but this will bring high risks and costs. Therefore, the suggestion is to use cast glass for the structural arches as this meets the complex geometry but use traditional materials for complex nodes and float glass where single, abstract curves can be made. The connections between different components are dry thanks to interlayers, but the cast glass elements are adhesively bonded. From safety, assembly, and labor perspective, these connections are chosen. This way, the blurry effect of glass in a heritage is reached, but the method is simplified. This principle can also be applied as roof structures for future buildings, but also for small pedestrian bridges as the geometry possibilities are unlimited.Architecture, Urbanism and Building Sciences | Building Technology | Sustainable Desig
Cast Glass Restoration of Marble Monuments
No full textHistorical monuments are one of the best-preserved memories of our past as human species. Despite this, the conservation of these monuments is slowly being put under pressure by rapid economic development and the desire to make as much profit as possible. This development has raised awareness through the world of conservation about the importance of preserving and conserving our heritage. It is, however, hard to obey all the stated values and guidelines with existing materials and techniques. Many guidelines contradict each other, resulting in fierce debates about how monuments can be restored in the best and most appropriate way or whether they should not be preserved at all. Introducing cast glass as a new material into the field of reconstruction and conservation could bring the extremes of this ongoing debate closer together. By introducing a transparent material, in the form of cast glass, it becomes possible to safeguard the structural and mechanical stability of marble monuments and simultaneously allow for observing both its original and damaged state. Moreover, with cast glass, it is possible to re-shape these missing elements of monumental structures very easily and its texture and transparency can be easily altered to give them either a fully transparent appearance or one that resembles of the original material. In this research. the possibilities of using cast glass in restoration projects have been explored by creating a design and production line starting at the analysis of the case study and ending when the final piece is assembled. Using key conservation values like preserving authenticity, minimising visual impact and allowing for reversibility has resulted in a cast glass reconstruction design which is according to the conservation guidelines and feasible with the existing production methods of cast glass. The development of new techniques in 3D scanning and additive manufactured moulds allows this process to become more time and cost-effective than currently used conventional methods. By scanning damaged surfaces of the monument in combination with the use of 3D printed sand moulds, glass can be easily cast into complex shapes to fill up the missing parts of the monument. The key to designing these glass shapes lies in understanding and respecting the monument’s structural and mechanical behaviour. If these characteristics are translated into the connections, shape and composition of the reconstructed cast glass elements, transparent restoration could become a serious contender for conventional materials in the conservation of monuments.Architecture, Urbanism and Building Sciences | Building Technology | Sustainable Desig
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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