1,721,389 research outputs found
Nonparametric and Semiparametric Panel Econometric Models: Estimation and Testing
Full text linkA. Ullah and D.E.A. Giles (eds), pp. 455-497</p
Circular building practices: An analysis of environmental impacts, challenges, and opportunities
No full textThe construction sector is one of the largest contributors to global greenhouse gas emissions, resource consumption, and waste generation. In response to these environmental challenges, this research explores the integration of Life Cycle Assessment (LCA) and Circular Economy (CE) principles to promote more sustainable and circular construction practices, with a particular focus on building materials and modular housing systems in South Asian countries, especially Pakistan.
The primary objectives of this work were to: (1) review the state of the art in LCA and Circular Building Design (CBD) integration in South Asia; (2) experimentally verify optimal compositions for earth-based printable construction materials; (3) develop a combined CE-LCA framework for assessing the environmental and circular performance of conventional, commercial, and 3D-printed building blocks; (4) conduct a cradle-to-grave LCA of modular house wall panels using primary data and sensitivity analysis; and (5) identify barriers to Circular Building Practices (CBP) adoption in South Asia and propose an evidence-based implementation framework.
The study conducted the first cradle-to-grave LCA of a modular house wall assembly in Pakistan, providing a detailed comparison between imported and locally sourced materials. Additionally, developed a CE-LCA model that evaluated building blocks using the Material Circularity Indicator (MCI) and Circularity Indicator (CI), highlighting the important circularity advantages of 3D-printed bio-based blocks over conventional concrete. The 3D-printed organic bio-based block, with its high MCI and CI values (MCI: 0.87, CI: 0.62), proves to be the most circular, while conventional concrete blocks remain the least circular (MCI: 0.48, CI: 0.24) due to their reliance on virgin materials and energy-intensive production processes The research highlights the importance of material selection, processing efficiency, and transportation logistics in determining the overall sustainability of construction materials. Experimental testing demonstrated the viability of earth-based printable materials incorporating natural fibers, offering locally sourced, low-impact alternatives for additive manufacturing in construction. Furthermore, a comprehensive survey of professional architects identified critical barriers to CBP in Pakistan, India, and Bangladesh, and an empirical framework was proposed to facilitate broader adoption of circular practices.
This work contributes to the continually expanding amount of research on sustainable construction by providing practical methodologies for integrating LCA and CE, developing new circular materials, and informing policy and industry strategies. It lays a foundation for future research and practice aimed at achieving a more reformative and environmentally responsible built environment in emerging economies
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
Full text link“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
Full text linkWe 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
Full text linkWe 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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