1,720,977 research outputs found
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
Different reproductive strategies and their possible relation to inbreeding risk in the bumble bee Bombus terrestris
No full textIn many species, inbreeding avoidance mechanisms prevent mating between close relatives, but these mechanisms are poorly studied in bumble bees. The probability of inbred matings within a colony in eusocial insects may depend on the timing of gyne and male emergence and on their sex ratio. In this study, we compared the development of 35 colonies of the bumble bee Bombus terrestris from founding to the emergence of the last gyne, and we investigated the probability of inbred mating in colonies with fertile newborn gynes and males. We calculated a novel colony inbreeding risk index (IRI), which considers the overlap period between fertile gynes and males, their numbers, and the colony sex ratio. We found that the IRI values were strictly correlated with the time elapsed between the gyne point and the switch point (i.e., from the moment of deposition of the first diploid egg that produces a gyne to the first haploid egg). We separated the colonies into two groups based on the mean value of the IRI: colonies with low IRI produced more gynes (93.8 ± 9.4), for a longer period (32.1 ± 1.8 days) and with a lower percentage of overlapped gynes (69 ± 5%) than colonies with high IRI (57.1 ± 21 gynes, 23.3 ± 2.9 days, and 100% overlapped gynes, respectively). A low IRI is connected to a reduced risk of inbred mating, while colonies with a high IRI may be advantaged in conditions of isolation, in case of the absence of non-related reproducers. Inbreeding risk index proved to be a good indicator of the colony reproductive strategy
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
Blossoming Perspectives: Quantifying and Mapping Flora for Biodiversity and Conservation
No full textThis chapter is a comprehensive exploration of the pivotal. Beginning with an emphasis on the significance of quantifying local floral resources, this chapter highlights the essential role of understanding their composition, distribution, and abundance in maintaining healthy ecosystems and supporting pollinators. The scope broadens as the chapter transitions to the mapping of floral resources on larger scales, extending from global to regional assessments, providing valuable insights into the broader landscape of these crucial resources. To comprehensively understand floral resources, it explores a wide array of variables (basic, abiotic, and biotic), offering a global framework for grasping the multifaceted nature of floral resources. The integration of open data and adherence to the FAIR principles are crucial for advancing our knowledge of floral resources. Ensuring that data are findable, accessible, interoperable, and reusable is integral to informed decision-making and effective resource management. Software tools play pivotal roles in facilitating the assessment and management of floral resources, aiding researchers and conservationists in optimizing their efforts and enhancing resource utilization. New technologies are also a focus, with discussions on the potential of remote sensing at various scales and the utility of software models in supporting decision-making, especially at the crop plot level. Continuous monitoring is emphasized as an essential aspect of floral resource assessment. Vigilance is required to adapt to changing conditions and to ensure the sustained protection of these invaluable resources. Conservation efforts take centre stage as the chapter explores European programmes and the crucial role of protected areas in serving as socioecosystems for pollinator conservation. Effective strategies for the protection of floral resources, the potential impacts of global warming on plant-pollinator interactions, and the contribution of protected areas to the well-being of floral resources and pollinators are also discussed. This chapter serves as a comprehensive and insightful resource, emphasizing the critical role of floral resource assessment and conservation in safeguarding biodiversity and ecological equilibrium. It is a valuable guide for researchers, conservationists, and policymakers committed to building a sustainable future for floral resources and the ecosystems that they support
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