1,720,960 research outputs found
Dimensjonar ved ei elv: Bagmati River, Kathmandu, Nepal
Get PDFObjectives: Problemstillinga kjem til uttrykk gjennom tre spørsmål med underspørsmål: 1. Har elvas fysiske degradering ført til endringar i korleis folk oppfattar og konseptualiserer elva? - Kan det observerast endringar i korleis folk tilskriv elva meining? 2. Kan ein sjå ulikskap i tilskriven meining til Bagmati etter alder? Har yngre menneske ei anna oppfatning av elva enn eldre menneske? 3. Om persepsjonen har blitt endra, har fysiske endringar i Bagmati endra folks ritualer og praksis til elva? - På kva måte har rituala endra seg, kva ligg i endring av praksisen? Ved å setje opp dette i stikkordsform, vil eg altså konsentrere meg om: 1. Persepsjon, endring i oppfatning av elva. 2. Konsekvensen av endra oppfatning, endring av praksis og ritualer
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
Microplastics Accumulation in Recirculating Aquaculture Systems (RAS)
Get PDFIt has in recent years been a shift in the land-based aquaculture production from flow through systems (FTS) to recirculating aquaculture systems (RAS). With emerging use of RAS, it is necessary with knowledge regarding potential issues, whereas one potentially increasing problem is accumulation of microplastics (MP) in the RAS water. The objects of this study were to determine MPs concentration in RAS water, if the MPs originated from within the RAS, and provide a size distribution of the particles. RAS water were sampled in triplicates from three different RAS at three different locations in Norway. The water for each RAS were sampled effluent of the fish tank, effluent of the drum filter, and effluent of the biofilter as well as make-up water and sludge. Bio-media from the corresponding RAS were also sampled. Organic material in the water samples were digested prior to filtration, and filters were stained with Nile Red for quantification. There were found MPs in all the RAS water samples with mean concentration of 61 MP/L at Sunndalsøra RAS, 371 MP/L at the commercial site RAS and 41 MP/L at Kårvika RAS. There were higher concentrations in the RAS water than in the make-up water for all locations, indicating that the MPs originated from within the systems. Sludge samples were only possible to quantify from Kårvika RAS, while sampling were not performed at the commercials site and MPs concentration were too high to perform a count in Sunndalsøra RAS. The sludge samples support that the origin of MPs are within the system, as more MPs leave then enters the RAS. Nuclear magnetic resonance (NMR) spectroscopy analyses gave almost identical signals as their reference, which were the corresponding bio-media. The MPs also showed indistinguishable similarities with polyethylene (PE), which the bio-media were made off. There were found no significant trends regarding concentration at the different sampling sites. All RAS had similar size distribution of the MPs with approximately 75% of the particles being less than 100 μm.
In conclusion, there were high concentrations of MPs in RAS which likely were due to shattering of the bio-media. Future research is necessary to determine an accumulation rate, but the high abundance of MPs proves the emerging issue regarding MPs. And although RAS has the potential to be the environmental winner within aquaculture, there still are opportunities for improvement
Fracking, Bildung and a Lack of Democratic Citizenship in Communities: What can South Africa Learn from Poland?
Get PDFFracking is a widely contested phenomenon, and considerable attention has been paid to its effects on the environment and people. The concepts of Bildung and democratic citizenship in poor communities where there is fracking have not been explored, although people are the most vulnerable to its effects. This article is prompted by how the lack of democratic citizenship in resource-extraction areas has led to protests. This article discusses the lack of democratic citizenship in communities that are threatened by fracking in South Africa and it draws lessons from the Polish case study. The article responds to questions on the importance of democratic citizenship for communities under the threat of fracking, how the lack of democratic citizenship on fracking been a challenge in Poland and South Africa and it provides the significance of the concept of Bildung to promote democratic citizenship in communities faced by fracking.publishedVersio
Academia in the context of constraint and a performative SDG agenda: A perspective on South Africa
No full textChapter 6 in the book Knowledge for Justice: Critical Perspectives from Southern African-Nordic Research Partnerships.Published by African Minds
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
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