1,721,178 research outputs found
Introduction to bio-based materials
No full textBio-based materials can be defined as goods that are primarily made of a substance or compounds obtained from biomass, which can exist naturally or be synthesized. They can also be products of processes that employ biomass. Strictly speaking, a lot of everyday materials, such as paper, wood, and leather, can be called bio-based materials; nevertheless, the phrase is usually used to describe contemporary materials that have undergone more intensive processing. Biocomposites, solvents, polymers, and bulk chemicals are among the materials derived from biomass sources. The numerous methods used to transform biomass components into fuels and products with added value fall into one of two general categories: thermochemical or biochemical. Additionally, conventional enzyme separation, fermentation, and plant breeding—the three primary biotechnological processes—are employed. Although this claim is being extensively examined, bio-based materials are thought to offer potentially greener substitutes than their petroleum-based competitors. Emerging bio-based materials that could rival traditional materials are a constant source of innovation, and the possibilities for incorporating them into both new and established goods are only now being investigated
The perils of COVID-19 in Nepal: implications for population health and nutritional status
No full textThere is a growing concern that the long-term extension of lockdown strategy can severely affect the health and nutrition security of the poor and vulnerable population in Nepal
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
Accelerating progress towards the Zero Hunger Goal in cross-boundary climate change hotspots
Full text linkThe most recent 2017 United Nations’ Sustainable Development Goals progress report
highlighted the need to accelerate the pace of progress in order for the Sustainable Development
Goals to be fully achieved. Responding to these concerns, the present commen
tary proposes four
distinct, but interrelated approaches to accelerate the Zero Hunger
G
oal in transboundary climate
change hotspots, regions which suffer from multiple stressors and vulnerabilities, and in which
prevalence of food insecurity and malnutrition often remains disproportionately high. These
conceptual, programmatic and policy approaches are discussed drawing from a newly developed
conceptual framework and referring to specific examples from climate change hotspots around the
world
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
PIL893387 Supplemental Material - Supplemental material for Phase, microstructure, and wear behavior of Al<sub>2</sub>O<sub>3</sub>-reinforced Fe–Si alloy-based metal matrix nanocomposites
No full textSupplemental material, PIL893387 Supplemental Material for Phase, microstructure, and wear behavior of Al2O3-reinforced Fe–Si alloy-based metal matrix nanocomposites by Akash Saxena, Neera Singh, Bhupendra Singh, Devendra Kumar, Kishor Kumar Sadasivuni and Pallav Gupta in Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications</p
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