1,720,968 research outputs found
A linear assignment based conceptual lifecycle assessment method for selecting optimal agri-industrial materials production pathway: A case study on Nigerian yam value chain
Get PDFLifecycle assessment is a robust tool for comprehensive environmental impact
assessment of products and processes. It provides users opportunities to identify the hotspots
along the lifecycle of a system and thereby enable them to implement improvement opportunities
as deemed appropriate. Production of agri-based industrial raw materials could be energy and
water intensive. Such endeavour could take a heavy toll on the environment in terms of resource
consumption and environmental pollution. The goal of this study was to develop an easy to use
and less data intensive conceptual LCA methodology for selecting optimal pathway along a
value-chain under two decision scenarios: the optimal techno-environmentally friendly pathway,
and optimal sustainability pathway. This proposed Linear Assignment Method integrated LCA is
a less data intensive conceptual LCA method that facilitates the selection of an optimal production
and processing pathway for agri-industrial materials, minimizes resource consumption and
reduction of potential climate change impact of agri-industrial materials value chain. The LCA
ISO 14040s aligned conceptual LCA method will be found useful in identifying potential hotspots
in a agri-industrial production process lifecycle, in selecting activity options that would result in
minimum ecological footprint, and help in removing obstacles in implementing a scoping
lifecycle analysis where cost, time and data availability are the impediments
Potential social lifecycle impact analysis of bioenergy from household and market wastes in African cities
Get PDFArticleBioenergy is touted as a viable source of stable and affordable energy in a number of
remote sub-urban centres. This study evaluates the potential social lifecycle impacts of bioenergy
production from household wastes and agri-wastes in some African cities. The assessment
considered the use of rotten and unsold fruits, vegetables and other related agri-wastes from
central open markets in Lagos and Johannesburg as case studies. The 2009 UNEP/SETAC’s
social lifecycle assessment (sLCA) guidelines and the associated sLCA methodological sheets
are used to evaluate the potential social impacts of bioenergy production from agri-waste on
operators/workers, the consumers, the value chain, and the local community. Preliminary results
showed that it will provide a lot of benefits such as alternative employment opportunities,
improved profits for small businesses, waste minimization, cleaner environment and improved
communal health. It will also lead to improvement in energy supply, and alleviation of poverty.
However, care has to be taken to protect the bio-digestion facility’s neighbourhood from
unpleasant odour, rodents and other organisms that may attempt to feed on the rotting agri-waste.
The outcome of this study provides an insight to the necessity for the development of appropriate
bioenergy policy/regulation and for the need to take preemptive steps to eliminate/minimize
potential negative consequences of bioenergy production on the stakeholders
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
A synopsis on designing for multi-lifecycle in chemical engineering and the potential impacts on the attainment of circular economy in Africa
Get PDFPlease read abstract in article.https://aip.scitation.org/journal/apcam2023Chemical EngineeringNon
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