1,723,820 research outputs found
Typton O. G. Costa 1844
No full textTypton O. G. Costa, 1844 Typton— O. G. Costa, 1844: 288; Holthuis, 1951: 151; Chace, 1972: 46. Diagnosis. Rostrum is simple and compressed, usually spinelike, dorsal and ventral margin unarmed. Carapace with antennal spine. Mandible without palp. Maxillipeds with exopods. Third to fifth pereopods with bifid dactyli. Telson with 2 pairs of dorsal spines and 3 pairs of spines on posterior margin.Published as part of Vieira, Rony R. R., Ferreira, Rodrigo S. & D'Incao, Fernando, 2012, Pontoniinae (Crustacea: Decapoda: Caridea) from Brazil with taxonomic key, pp. 1-38 in Zootaxa 3149 on page 30, DOI: 10.5281/zenodo.27951
Health care work
No full textHealth care work involves high cognitive demands and requires high alertness and concentration levels for a correct assessment and decision making. Sleepiness, sleep deprivation, and vigilance fluctuations, connected to irregular and prolonged working hours, are key factors in conditioning human error, hence accidents and injuries related to both workers and patients. Several studies reported that both physicians and nurses, working on shift and night work and for prolonged duty periods, show significant negative effects on cognitive behavior and psychomotor performance with increased risk of clinical errors such as to hinder patients' safety and health. In order to prevent such adverse consequences and improve workers' well-being and performance efficiency, company management has the hard task of optimizing work organization by acting on working time, available staff and working procedures. In recent years, many attempts have been made by medical associations, governmental institutions, and international directives to set limits to weekly working hours, overtime, length of duty periods, and rest periods of health care personnel, as well as to adopt appropriate compensative measures able to counteract sleep deprivation and sleepiness, in particular as concerns sleep hygiene, napping, use of bright light and medicament
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
Periclimenes O. G. Costa 1844
No full text<i>Periclimenes</i> O. G. Costa, 1844 <p> <i>Periclimenes—</i> O. G. Costa, 1844:290; Holthuis, 1951:23; Chace, 1972:29; Williams, 1984:83; Chace & Bruce, 1993:94; Bruce, 2007a:404.</p> <p> <b>Diagnosis.</b> Rostrum well developed, laterally compressed, usually with teeth on dorsal and ventral margins. Epigastre and supraorbital spines presents or absents, antennal and hepatic spines presents. Mandible without palp. Maxillipeds with exopods. Third to fifth pereopods with dactyli bifid or simple. Telson with 2 pairs of dorsal spines and 3 pairs of spines on posterior margin.</p>Published as part of <i>Vieira, Rony R. R., Ferreira, Rodrigo S. & D'Incao, Fernando, 2012, Pontoniinae (Crustacea: Decapoda: Caridea) from Brazil with taxonomic key, pp. 1-38 in Zootaxa 3149</i> on page 19, DOI: <a href="http://zenodo.org/record/279517">10.5281/zenodo.279517</a>
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