1,721,046 research outputs found
Occurrence of Cuban bee throughout more than a century (125 years) of data
No full textThis database contains information on Cuban bees from historical collections of six
natural history museums: Museo Nacional de Historia Natural de Cuba, Instituto de
Ecología y Sistemática (Havana, Cuba), Muséum national d'Histoire naturelle,
American Museum of Natural History, Smithsonian Institution, and the National
Museum of Natural History, Washington, Kansas University, Natural History Museum,
Kansas from three countries. In addition, it includes information from collections made
by the first author between 2018-2024, from the bibliography and online databases,
with information from other institutions: Ontario, Toronto, York University, Packer
Collection, Florida, Gainesville, Division of Plant Industry, Florida State Collection of
Arthropods, Los Angeles County Museum of Natural History, Cornell University Insect
Collection, Illinois Natural History Survey, National Museum of Natural History and
Museum of Comparative Zoology.
The database includes 1322 records, of which 1067 are new records, of bees from
various localities in the Cuban provinces of Havana, Mayabeque and Artemisa. Fiftytwo
species distributed in 23 genera and 4 families were recorded. For these species,
the database provides information on ecology, biogeographic distribution and the
museum where the specimens are kept. Coordinates (GPS) from a single point are
provided for the 117 localities where species were recorded
responses of pollinators to urbanization and local management in urban farms in Havana
No full textThis database contains information on flower visitation and insect assemblages collected in 16 urban farms (organopónicos) in the Cuban provinces of Havana and surrounding areas. Data were collected during 2023 and 2024 and include information on flower abundance, insect abundance, and species richness, as well as records for specific insect groups: Syrphidae, other Diptera, Coleoptera, Lepidoptera, large bees (Xylocopa, Centris), small bees (other Cuban Apidae genera, Halictidae, Megachilidae), Apis mellifera, ants (Formicidae), and wasps (Vespoidea).
The database comprises 16 farms, including Organopónico Raquel Pérez, Labranza, Oro Verde, Vivero de Alamar, Hermanos Gómez, Esfuerzo Colectivo, El Girasol, CIMEQ, Arides Estévez, Arcoiris, 5to Congreso, 24 de Febrero, 1ro de Julio, Cooperativa 1ro de Julio, Playa, and Luyanó. Data for Organopónico Luyanó in 2023 and Hermanos Gómez in 2024 are not available due to lack of sampling.
In addition to biological data, the database includes climatic variables (monthly minimum and maximum temperatures, and precipitation) recorded from July 2022 to June 2024, which allow analysis of environmental influences on flower visitation and insect community structure.
Overall, the database provides detailed records on flower abundance and insect community composition across two years, enabling studies of temporal and spatial variation in pollinator communities in urban agricultural landscapes. Each record is linked to the farm and sampling year, with consistent taxonomic classification and standardized abundance metrics for comparative analyses
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
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
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