1,720,996 research outputs found
Protection against erosion and torrential floods as an element of the environmental protection system in the city of Belgrade
Full text linkБујичне поплаве као једна од резултујућих форми деловања ерозионих процеса, представљају најчешће природне катастрофе у Србији, у погледу људских жртава и материјалних штета...Flash foods as one of the forms of action resulting from erosion processes, are among the most common natural disasters in Serbia in terms of human loss and material damage..
Protection against erosion and torrential floods as an element of the environmental protection system in the city of Belgrade
No full textБујичне поплаве као једна од резултујућих форми деловања ерозионих процеса, представљају најчешће природне катастрофе у Србији, у погледу људских жртава и материјалних штета...Flash foods as one of the forms of action resulting from erosion processes, are among the most common natural disasters in Serbia in terms of human loss and material damage..
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
Determining the caloric potential of wooden plant species with the goal to protect and improve the environment
Full text linkMany countries are increasing the share of renewable and sustainable energy with the
basic goal to reduce the volume of fossil fuels whose harmful impact on the environment
is significant. The production and use of biomass that would be used for co-burning with
fossil fuel are one of how the countries of the European Union and the United States are
fighting against climate change. The most commonly used plant species is willow (Salix
sp.) due to its multiple effects on environmental protection and improvement. The advantages
they have are great, and only some of them are: efficient use of land combined with
the growing demand for renewable energy sources.
As fast-growing soft deciduous trees, willows show extremely good adaptability to the
grounds where they grow and climatic conditions, which results in a high survival rate
after planting and a high yield of wooden mass. This paper presents the results of the coburning
of biomass of the indigenous species (Salix alba, clone B-44) with three samples
of lignite in different ratios.
Two samples of lignite were taken from the eastern part of MB Kolubara, while the third
sample was taken from the western part of the Kolubara basin. The calorific values of
biomass and lignite mixtures were determined using an IKA C 5003 calorimeter. Based
on the obtained results, it can be concluded that even the minimum amount of the tested
clone (5%), significantly increases the calorific value of lignite by an average value of 454
kJ/kg for a mixture of 5% added biomass and lignite. It was also found that the content
of heavy metals in "contaminated" willows only slightly (by about 75 kJ/kg) reduces the
thermal value of the mixture compared to a mixture of uncontaminated clone and lignite.
The obtained results unequivocally indicate the possibility of using biomass obtained from
willow in the electrical sector to increase the calorific value of lignite while reducing the
amount of greenhouse gases emitted and recultivation of degraded land surfaces
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
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