Marcelino Ugarte, la Provincia y la Nación, estilos de gobierno

Fil: Barba, Fernando Enrique. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación; Argentina.

Estilos de enseñanza. Sentidos personales y configuraciones de acción tras la semejanza de las palabras. Estela B. Cols (2011). Rosario: Homo Sapiens, 208 páginas, ISBN: 978-950-808-643-3

Fil: Traverso, Olga Viviana. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación. Instituto de Investigaciones en Humanidades y Ciencias Sociales (UNLP-CONICET); Argentina.

Educar en la motricidad de 0 a 6 años : Nuevas fronteras de la investigación para la promoción de estilos de vida activos en la civilización tecnológica

En este proyecto está prevista la realización de una "investigación-intervención", que se llevará a cabo siguiendo el modelo del Project Cycle Management. En la fase de análisis se ha llegado a identificar los ámbitos de intervención y de investigación que, en nuestro caso, a partir del árbol de objetivos ha sido identificado como una acción prioritaria en la formación de educadores / enseñantes, que también influye en el ámbito del uso de los espacios escolares

Estilos socio-técnicos de producción de tecnologías conocimiento-intensivas : La conformación de una empresa de biotecnología en el campo de la salud humana en Argentina (1980-2006)

Este trabajo realiza una reconstrucción de la trayectoria socio-técnica de la conformación de una empresa de biotecnología en el campo de la salud humana en la Argentina. En este marco, se analizan en particular las tensiones entre los diferentes estilos socio-técnicos de producción de tecnologías intensivas en conocimientos identificados en la firma. Se proponen algunas relaciones explicativas del caso y se reflexiona sobre la aplicación del concepto de estilo socio-técnico para comprender la dinámica del cambio tecnológico en las firmas que producen tecnologías intensivas en conocimiento

Parental exposure to elevated pCO2 influences the reproductive success of copepods

Substantial variations are reported for egg production and hatching rates of copepods exposed to elevated carbon dioxide concentrations (pCO2). One possible explanation, as found in other marine taxa, is that prior parental exposure to elevated pCO2 (and/or decreased pH) affects reproductive performance. Previous studies have adopted two distinct approaches, either (1) expose male and female copepoda to the test pCO2/pH scenarios, or (2) solely expose egg-laying females to the tests. Although the former approach is more realistic, the majority of studies have used the latter approach. Here, we investigated the variation in egg production and hatching success of Acartia tonsa between these two experimental designs, across five different pCO2 concentrations (385-6000 µatm pCO2). In addition, to determine the effect of pCO2 on the hatching success with no prior parental exposure, eggs produced and fertilized under ambient conditions were also exposed to these pCO2 scenarios. Significant variations were found between experimental designs, with approach (1) resulting in higher impacts; here >20% difference was seen in hatching success between experiments at 1000 µatm pCO2 scenarios (2100 year scenario), and >85% at 6000 µatm pCO2. This study highlights the potential to misrepresent the reproductive response of a species to elevated pCO2 dependent on parental exposure.

Sex-specific foraging during parental care in a size-monomorphic seabird

Sex differences in foraging behaviour are typically studied in size-dimorphic taxa. Data on sex-specific behavior in monomorphic taxa are needed to test theories of reproductive investment. It has been suggested that in seabirds foraging niche separation may be related to decreased intersexual competition for food between cooperating pair-bonded individuals. Alternatively, sex differences in foraging niches may be driven by different nutritional requirements of females associated with the reproductive costs of egg production and oviposition. To assess these possibilities, we studied a size-monomorphic colonial seabird, the Australasian Gannet (Morus serrator) at the Cape Kidnappers gannetry, New Zealand. We recorded maximum dive depths, and distinct diet composition of incubating females as indicated by stable isotopic signatures. Results suggested greater female foraging effort during early times of incubation, indicated by significantly deeper maximum dives. Sex-specific foraging patterns across other breeding stages were more variable. Nitrogen stable isotopic values showed that incubating females occupied a different trophic position compared to males at the same breeding stage, and also from those of gannets of both sexes at later stages of parental care. Overall, the data are consistent with cost-of-oviposition compensation in females necessitating male-bias in parental care in biparental breeders. Further research is needed to unravel the implications for the evolution of sex differences in behavior in this and other monomorphic taxa.