Search

The study of natural avian hybridization has a chequered history; ignored or marginalized by many, but at times studied in considerable detail by a few. The discovery of an unknown duck in the English county of Norfolk in the 1840s provoked much discussion among British ornithologists regarding its status as a species or hybrid and led to conflicting views on appropriate nomenclature. William Richard Fisher of Great Yarmouth, a naturalist and artist, was much involved in these initial deliberations and, together with Abraham Dee Bartlett, was responsible in 1847 for declaring this duck a distinct species named Ferina ferinoides (now Aythya ferina × nyroca) with the vernacular name of Paget's pochard. The discovery of similar specimens elsewhere in Europe in the 1850s also stimulated considerable interest from ornithologists such as Friedrich Wilhelm Justus Bädeker and Jean Baptiste Marie Jaubert, both of whom provided scientific names, being unaware of events in Britain. The Italian ornithologist, Ettore Arrigoni degli Oddi, was perhaps the most vigorous pursuer of Paget's pochard, travelling extensively in Britain and on the continent to examine specimens. This paper traces the circumstances in which the curiosity of notable ornithologists in Britain and mainland Europe was aroused by Paget's pochard, thereby reflecting the waxing and waning of interest in, and prevailing views on, natural hybridization among birds since the second half of the nineteenth century. [ABSTRACT FROM AUTHOR]

Although content differences in pornography play an acknowledged role in many theories concerning the use and consequences of such material, relatively few studies have attempted to describe and understand the use of different types of pornography. To begin to address this gap, N = 367 participants who were in predominately mixed-sex relationships were asked open-ended questions about the pornography they used alone and the pornography they used with a romantic partner. A mixed-methods analysis employing both thematic analysis and content analysis to the same set of responses indicated that participants’ responses frequently focused on the gender of the performers, the sexual behaviors they engaged in, and the number of performers present in the pornography they watched. Other content features ranging from the presence of BDSM and rough sex to the race of performers were also mentioned by participants but to a lesser extent. Exploratory quantitative analyses indicated that the content of shared pornography use was more mono- and heteronormative than the content of solitary pornography use. Also, gender differences in the content of pornography tended to be more accentuated with respect to solitary pornography use than shared pornography use. The findings confirm that men and women may be using different kinds of pornography when they use it alone and are the first to suggest that consumers may be using different materials when they use pornography alone than when they use it with a partner. The results of the current study reinforce the importance of adopting content-specific measures of pornography use and suggest a potential avenue for conceptualizing a new taxonomic system for organizing pornographic materials.

Hoy es imposible hablar de conocimiento o información sin pensar en Internet. Este avance de la democratización informativa está potenciando el desarrollo de las ciencias en todo el mundo a una velocidad, hasta hace unas décadas, incalculable. Los retos que estos nuevos medios de difusión plantean, invariablemente, han significado en muchos aspectos un reto del ordenamiento jurídico vigente. En un mundo de blogs, podcasts, wikis, journals, fotologs, metadata, freeware, webcasts y demás formas de conocimiento libre ha surgido la pregunta sobre la vigencia de nuestro sistema de derechos de autor. Aprovechando su visita para la presentación de las licencias Creative Commons en Perú, THEMIS-Revista de Derecho tuvo la oportunidad de conversar con dos investigadores norteamericanos, quienes han generado una respuesta eficiente frente a la actual revolución informativa en el mundo.