1,720,968 research outputs found
Connections Design and Analysis: Numerical, Analytical and Code-Based Methods
No full textThe design and performance of structural connections in timber engineering plays a critical role in the safety and functionality of timber structures, especially in applications involving tall buildings. In this chapter, the design and modelling strategies of structural connections in timber engineering are examined. The study highlights the significance of key parameters, including stiffness, strength, and ductility, and explores how these factors influence the behaviour and performance of various connection types under different loading conditions. Analytical and numerical methods for assessing the mechanical properties of connections are presented, including those outlined in widely used standards like Eurocode 5. The discussion highlights the limitations of these guidelines, particularly their inability to fully address complex behaviours such as non-linear deformation and long-term effects. The importance of experimental validation is also emphasized, as a critical step in refining models and improving design practices
Floor Design for Taller Timber Buildings
No full textFloors have two fundamental structural functions in buildings: (i) transferring the vertical loads (that they are subjected to) to the vertical load bearing structures, and (ii) acting as diaphragms in the overall lateral load resisting system. In this Chapter the focus is on the former function, concentrating especially on their out-of-plane behaviour. To this aim, there are in fact various floor systems that can be used in taller timber buildings (TTBs). Among other aspects, the choice of the suitable floor system for a particular timber building depends widely on several influencing parameters, such as the span, the assigned loads, the requirements of the floor for the intended use, and the floor layout. The floors are subjected to various loads, and their design is very often governed by serviceability aspects, such as static deflections and dynamic responses (e.g., vibrations). A robust assessment of the serviceability performance requires the evaluation response of the floor system to the imposed loads, and the application of corresponding design criteria (in the region the building is situated in). In this section, aspects such as different floor systems, relevant loads, mechanical behaviour and serviceability criteria in different regions shall be discussed
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
Vertical Deformations in Tall Timber Buildings: Sources and In-Field Estimations
No full textTall timber building ‘structural components may undergo severe vertical deformations due to the action of different loads/load combinations during their lifetime. These deformations, basically unusual or negligible for low and mid-rise buildings ‘components, could harshly affect the overall stability of TTBs; therefore, specific estimation methods and mitigation intervention must be established. A deeper understanding of the short- and long-term deformation behavior of large span and highly loaded components is crucial for improving future design possibilities for TTBs, particularly concerning serviceability during both construction and operational phases. In the following paragraphs, an overview of the current analytical formulations and experimental methods for the estimation of vertical deformations is provided. Firstly, since for practitioners it is essential to adopt clear formulation, the provision included in the main standards are discussed. Secondly, the discussion concerns the experimental methodology for the assessment of in-situ vertical deformations
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
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