1,720,967 research outputs found
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
First checklist, mapping and review of the marine biodiversity data for the Bijagós Archipelago (Guinea-Bissau, Africa) - implications for conservation
No full textThe Bijagós Archipelago, rich in marine life, serves as a vital nursery and supports local fisheries. International marine research programs have been developed for the Bijagós, especially targeting macrofauna, but the information on marine biodiversity of the Bijagós is scattered and insufficiently available and integrated for a comprehensive assessment. The main goal of this study was to compile, using different sources (scientific fishing campaigns, technical reports, scientific papers, bioportals, etc.), the existing marine biodiversity data in the Bijagós Archipelago, to identify hotspots, knowledge gaps, and conservation priorities in this important region. For this, records were compared inside and outside national parks, or marine protected areas, and species with conservation status according to the IUCN and those with commercial value were identified. A total of 7,222 marine biodiversity records, belonging to 420 species, were found, most of them corresponding to birds and fish taxa. However, most of records are concentrate on specific islands. Of the 420 species, 136 of them were identified as having commercial interest, and most of them were found inside protected areas. Nevertheless, most species identified as critically endangered by the IUCN were found outside protected areas. The results of this study allowed the creation of a platform to make biodiversity information available on an easy-to-use portal, https://www.marafrica.net/Bijagós/. This is free for everyone, and it is dedicated to provide valuable information to managers, stakeholders, scientists, students and the general public for education, management and conservation activities. The present study is the first one that compiles and map all available marine biodiversity data reported to date in the Bijagós Archipelago, and could serve as a baseline to inform conservation measures for preserving the marine biodiversity and ecosystem services of this archipelago and other important African regions.O Arquipélago dos Bijagós, rico em vida marinha, atua como um berçário vital e apoia as pescarias locais. Programas internacionais de pesquisa marinha foram desenvolvidos para os Bijagós, especialmente direcionados à macrofauna, mas as informações sobre a biodiversidade marinha dos Bijagós estão dispersas e insuficientemente disponíveis e integradas para uma avaliação abrangente. O principal objetivo deste estudo foi compilar, a partir de diversas fontes (campanhas científicas de pesca, relatórios técnicos, artigos científicos, bioportais, etc.), os dados existentes sobre biodiversidade marinha no Arquipélago dos Bijagós, identificando pontos de destaque, lacunas de conhecimento e prioridades de conservação nessa importante região. Para isso, foram comparados registros dentro e fora de parques nacionais ou áreas marinhas protegidas, e foram identificadas espécies com status de conservação de acordo com a IUCN, bem como aquelas de valor comercial. Um total de 7.222 registros de biodiversidade marinha, pertencentes a 420 espécies, foi encontrado, a maioria correspondendo a aves e peixes. No entanto, a maioria dos registros está concentrada em ilhas específicas. Das 420 espécies, 136 delas foram identificadas como tendo interesse comercial, e a maioria delas foi encontrada dentro de áreas protegidas. No entanto, a maioria das espécies identificadas como criticamente ameaçadas pela IUCN foi encontrada fora de áreas protegidas. Os resultados deste estudo permitiram a criação de uma plataforma para disponibilizar informações sobre biodiversidade em um portal de fácil utilização, https://www.marafrica.net/Bijagós/. Este é gratuito para todos e é dedicado a fornecer informações valiosas para gestores, partes interessadas, cientistas, estudantes e o público em geral para atividades de educação, gestão e conservação. O presente estudo é o primeiro a compilar e mapear todos os dados de biodiversidade marinha disponíveis até a data no Arquipélago dos Bijagós e pode servir como uma linha de base para informar medidas de conservação para preservar a biodiversidade marinha e os serviços ecossistêmicos deste arquipélago e outras regiões importantes da África.The Research Initiation Grant, Ref. CCMMAR/BIC/15/2022, received within the scope of project n0 540316524, called MARAFRICA, from the Center for Marine Sciences at the University of Algarve, supported by the Sciences Foundation and Technology - FCT and Rede AGA KHAN for Development
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
Estimating regional patterns of benthic invertebrates along the Namibian coast to comply with the post-2020 global biodiversity framework
No full textAssessing benthic biodiversity patterns is crucial to ensure the conservation of marine biodiversity and essential ecosystem services, especially in the context of climate change. Importantly, benthic biodiversity estimates are still lacking along the Benguela Current Large Marine Ecosystem (BCLME), which encompasses the broad coastlines of Angola, Namibia, and South Africa. Moreover, anthropogenic pressures have led to biodiversity threats and declines in benthic invertebrate populations, potentially shifting biodiversity baselines. To address this knowledge gaps, we provide the first biodiversity estimate of marine invertebrates in the Namibian coastline by means of deep neural network modelling fitting high-resolution predictor variables and field surveys data collected over a period of four years. Our models matched the known distribution of benthic invertebrate species with high estimates throughout the entire study extent and hotspots located in the Central regions of the Marine Spatial planning (MSP) area. Our findings also show that achieving the post-2020 biodiversity targets of protecting 30% of the Namibian Exclusive Economic Zone (EEZ) leads to 12 out of 143 taxa being preserved, particularly the mantis shrimp Squilla acuelata calmani; the crabs Mursia cristiata, Mixed Hermit crabs, Macropipus australis, Bathynectes piperitus, Chaceon maritae and Lithodes ferox; the lobsters Stereomastis sp. and Jasus lalandii; the gastropods Amalda bullioides and Gastropods mixed; and the Sea anemone pink. This new assessment can guide and enhance decision-making in the management and conservation of different areas like Ecologically or Biologically Significant Marine Areas.The authors thank to Centre of Marine Sciences (CCMAR) for providing the African Students with a partial fellowship funded by the Aga-Khan and FCT-Portuguese Foundation for Science and Technology through the MARAFRICA Project
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