1,721,928 research outputs found
Personal Congratulatory Notes -- 1960-64 -- Correspondence, Miscellaneous -- letter, 1960-08-29
No full textLetter from Federico, Gomez S. to Sabin, Albert B. dated 1960-08-29.Sabin Collection Fair Use Policy</a
A new genus, a new species, and a new record of the family Darcythompsoniidae Lang, 1936 (Copepoda, Harpacticoida) from the Gulf of California, Mexico
No full textA new genus and new species of the family Darcythompsoniidae Lang (1936), and a new record of Darcythompsonia fairliensis (T. Scott, 1899), from a coastal lagoon in the south-eastern Gulf of California (Mexico), are reported and fully described and illustrated. Pabellonia olganoguerae gen. nov., sp.nov. shares features with Darcythompsonia T. Scott, 1906, such as the presence of a dimorphic second endopodal segment of the male second swimming leg, and with Kristensenia Por, 1983, the lack of sexual dimorphism in the caudal rami, anal operculum and urosomites. Thus it is considered closely related to these genera, and to represent a third component of this lineage. Some notes on the biogeography of Darcythompsonia T. Scott, 1906, are also presented. (C) 2000 The Linnean Society of London
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
Some additions to the Mexican fauna: The family paramesochridae (Copepoda : harpacticoida)
No full textSediment samples were taken during a short-term study of the distribution of meiofauna from a coastal lagoon in Sinaloa (northwestern Mexico). Several species of harpacticoids (Copepoda: Harpacticoida) were observed among the taxa recovered. Some of these species are new to science, whereas some others are new records for Mexican brackish systems. Three species of Apodopsyllus (Harpacticoida: Paramesochridae) are described herein. One of them, A. alejandrovillalobosi sp. nov. proved to be closely related to its northern congener A. vermiculiformis known from California and British Columbia. Apodopsyllus samuelgomezi sp. nov. and A. pseudocubensis sp. nov. constitute new records of the neotropical arcuatus-chilensis-cubensis lineage. Apodopsyllus samuelgomezi sp. nov. is unique within this clade in the male P6 with two long inner setae. Apodopsyllus pseudocubensis sp. nov. was found to be allied to its Cuban relative A. cubensis. These two species share the general shape of female P5 and male P6
A new genus, a new species, and a new record of the family Darcythompsoniidae Lang, 1936 (Copepoda, Harpacticoida) from the Gulf of California, Mexico
No full textA new genus and new species of the family Darcythompsoniidae Lang (1936), and a new record of Darcythompsonia fairliensis (T. Scott, 1899), from a coastal lagoon in the south-eastern Gulf of California (Mexico), are reported and fully described and illustrated. Pabellonia olganoguerae gen. nov., sp.nov. shares features with Darcythompsonia T. Scott, 1906, such as the presence of a dimorphic second endopodal segment of the male second swimming leg, and with Kristensenia Por, 1983, the lack of sexual dimorphism in the caudal rami, anal operculum and urosomites. Thus it is considered closely related to these genera, and to represent a third component of this lineage. Some notes on the biogeography of Darcythompsonia T. Scott, 1906, are also presented. (C) 2000 The Linnean Society of London
A new species of Onychocamptus Daday, 1903 (Copepoda : Harpacticoida : Laophontidae) from northwestern Mexico
No full textA new species of harpacticoid copepod, Onychocamptus fratrisaustralis (Harpacticoida: Laophontidae), is described from a coastal lagoon in northwestern Mexico (Sinaloa state). Onychocamptus fratrisaustralis appears to be related to O. krusensterni Schizas & Shirley, 1994, by the unusual formula of the P4 exopod. Onychocamptus anomalus (Ranga Reddy, 1984) shares the same formula of the P4 exopod, but differs from O. fratrisaustralis and O. krusensterni in the A2 exopod (with 4 setae in O. krusensterni and O. fratrisaustralis; with 1 seta in O. anomalus) and female P5 exopod (with four setae in O. anomalus; with three setae in O. krusensterni and O. fratrisaustralis). Onychocamptus besnardi Jakobi, 1954, also possesses a P4 exopod with two outer spines, but lacks the inner seta of the same segment. After thorough analysis of the type material of O. krusensterni (USNM259322), a number of subtle differences was found between this species and O. fratrisaustralis: armature of the antennal exopod, length/width ratio of caudal rami, dorsal ornamentation of the genital double-somite and fourth urosomite, relative length of the inner setae of second and third exopodal segments and the two innermost setae of second endopodal segments of P2-P3, relative length of the second endopodal segment of P4, general morphology of baseoendopod and relative length of the proximal setae of the endopodal lobe of P5, and relative length of the lateral outer seta of the last antennular segment
A new species of Onychocamptus Daday, 1903 (Copepoda : Harpacticoida : Laophontidae) from northwestern Mexico
No full textA new species of harpacticoid copepod, Onychocamptus fratrisaustralis (Harpacticoida: Laophontidae), is described from a coastal lagoon in northwestern Mexico (Sinaloa state). Onychocamptus fratrisaustralis appears to be related to O. krusensterni Schizas & Shirley, 1994, by the unusual formula of the P4 exopod. Onychocamptus anomalus (Ranga Reddy, 1984) shares the same formula of the P4 exopod, but differs from O. fratrisaustralis and O. krusensterni in the A2 exopod (with 4 setae in O. krusensterni and O. fratrisaustralis; with 1 seta in O. anomalus) and female P5 exopod (with four setae in O. anomalus; with three setae in O. krusensterni and O. fratrisaustralis). Onychocamptus besnardi Jakobi, 1954, also possesses a P4 exopod with two outer spines, but lacks the inner seta of the same segment. After thorough analysis of the type material of O. krusensterni (USNM259322), a number of subtle differences was found between this species and O. fratrisaustralis: armature of the antennal exopod, length/width ratio of caudal rami, dorsal ornamentation of the genital double-somite and fourth urosomite, relative length of the inner setae of second and third exopodal segments and the two innermost setae of second endopodal segments of P2-P3, relative length of the second endopodal segment of P4, general morphology of baseoendopod and relative length of the proximal setae of the endopodal lobe of P5, and relative length of the lateral outer seta of the last antennular segment
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
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