Search results for "97"
showing 10 items of 1081 documents
Role of protozooplankton in the diet of North Sea autumn spawning herring (Clupea harengus) larvae
2022
AbstractThe role of small prey (< 200 µm) in larval marine fish nutrition is largely understudied. Here, we explore the contribution of protozooplankton (PZP 20–200 µm) to larval fish diets, compared to metazoan microzooplankton (MZP 55–200 µm). More specifically, we tested whether the contribution of PZP increased during the low productivity season and decreased as larvae grow. We used North Sea autumn spawning herring (Clupea harengus) as a case study, as it is a key species with high commercial and ecological importance. In autumn and winter, the potential PZP and MZP prey was dominated by cells < 50 µm (mainly Gymnodiniales, Pronoctiluca pelagica,Tripos spp. and Strombidium spp.),…
The influence of building interactions on seismic and elastic body waves
2019
We outline some recent research advances on the control of elastic waves in thin and thick plates, that have occurred since the large scale experiment [S. Brûlé, Phys. Rev. Lett. 112, 133901 (2014)] that demonstrated significant interaction of surface seismic waves with holes structuring sedimentary soils at the meter scale. We further investigate the seismic wave trajectories of compressional body waves in soils structured with buildings. A significant substitution of soils by inclusions, acting as foundations, raises the question of the effective dynamic properties of these structured soils. Buildings, in the case of perfect elastic conditions for both soil and buildings, are shown to int…
Challenging fear: chemical alarm signals are not causing morphology changes in crucian carp (Carassius carassius)
2010
Published version of an article in the journal: Environmental Biology of Fishes. Also available at SpringerLink: http://dx.doi.org/10.1007/s10641-010-9707-9 Crucian carp develops a deep body in the presence of chemical cues from predators, which makes the fish less vulnerable to gape-limited predators. The active components originate in conspecifics eaten by predators, and are found in the filtrate of homogenised conspecific skin. Chemical alarm signals, causing fright reactions, have been the suspected inducers of such morphological changes. We improved the extraction procedure of alarm signals by collecting the supernatant after centrifugation of skin homogenates. This removes the minute …
DETERMINANTS OF EDUCATIONAL ADVANCEMENT OF RURAL AREAS IN POLAND
2017
The article is an aimed attempt at the diagnosis and evaluation of the educational level (character) of rural population in Poland perceived as educational advancement as well as of its environment (background). Growing importance of education in improving professional opportunities, changing educational aspirations and parents’ support as well as positive internal migration trends were emphasised. Rural regions are still lagging behind urban areas, though optimistic characteristics indicate receding stigmatisation and marginalisation of the Polish country with internal migration of young and educated individuals, including affluent ones (potential luxury goods buyers), to rural area…
REMITTANCES IMPACTS ON SCHOOLING IN JORDAN: ANALYSES WITH RESPECT TO MIGRANT DESTINATION
2019
The two channels that explain how migration of a household member affects human capital formation of those left-behind are income and family disruption effects. In this study, remittances and migration impacts on human capital formation in Jordan is researched with respect to preferred migrant destinations and to the originating governorates of migrants. Jordan’s Labour Market Panel Survey-2010 is used to carry out the analyses. Remittances are found to have a positive impact on “schooling”, and findings do not change significantly across households with respect to the host country. There is no solid evidence of family disruption, except in households where both parents are absent; however,…
Remote sensing:A case for moving space data towards the public good
2008
This paper discusses whether current international and national regulation of remote sensing activities achieves a true balance between proprietary interests of producers of remote sensing data and information and the needs of the community in accessing that data and information. By subjecting remote sensing data to general copyright restrictions that are often coupled with exclusive licences, irrespective of type or use of data and/or information, the development of important secondary information markets could be negatively hampered. In the long run, over-regulating access to space data may prove counter-productive in the information age. Using examples of different modes of information d…
Los oficiales y subalternos de la Real Audiencia de Mallorca (1716-1808)
2019
The objective of this work is to know the organic structure of the officers and subordinates of the Royal Court of Majorca during the 18th century, which was the essence of the high judicial administration insular. Because of that, we approached through these relatively extensive professionals, with the description of their functions, who they were and how they obtained their charges. The article ends with an epilogue dedicated to the enlargement of the Royal Court with the creation of the second chamber during the reformist stage of Charles III to improve the high judicial administration insular.
La Educación Secundaria Superior Europea. Aspiraciones utópicas, tendencias reales y cuestiones a debate.
2001
El presente artículo pretende reflex ionar, a partir del análisis realizado sobre la educación secundaria superior en Europa, sobre la di scusión actual que se genera en tomo a este nivel educativo, en un contexto marcado por las incesantes transfomaciones y a la vez por la necesidad de recapitular ante el efecto inevitable del cambio de siglo. Para cumplir su objetivo, el artículo se divide en tres apartados, cuya conexión entre sí resulta inexcusable. En el primer apartado, de carácter introductorio, se discute sobre el papel que ha de cumplir la escuela en el momento en que se vincula al binomio educación y trabajo, tratando de romper algunos esquemas predetenninados, y a la vez de redef…
10 años de la REEC. Una mirada en perspectiva
2005
Con motivo del décimo aniversario de la REEC, este artículo realiza una panorámica de lo que ha sido la revista en ésta su primera década de vida. Los motivos del nacimiento de la REEC, su encuadre institucional en la SEEC y sus objetivos se especifican en la primera parte de este artículo. También se presenta en ella su habitual estructura organizativa y su manera de proceder a la hora de confeccionar cada número anual, los sistemas de selección de artículos en casa sección y otras cuestiones de interés. En segundo lugar se ofrece la evolución de las cuestiones elegidas para constituir el tema de la sección monográfica. Ellas nos van dibujando un singular camino que deja constancia de las …
CONTROVERSIAS EN TORNO AL SOFTWARE LIBRE: PRÁCTICAS Y DISCURSOS EN LA DOCENCIA UNIVERSITARIA VALENCIANA
2008
Resumen basado en el de la publicación La progresiva implantación del software libre en los ámbitos universitarios, se acompaña de un discurso construido sobre las controversias que rodean a esta tecnología. Para el análisis de este problema se utiliza el modelo de 'espacios controversiales' propuesto por Nudler, definiendo uno de estos espacios en torno a la aplicación de las tecnologías informáticas en las enseñanzas universitarias. El supuesto es que el debate sobre el copyleft está alcanzando también al discurso pedagógico que acompaña a las aplicaciones de estas tecnologías. Este modelo es el que se trata de aplicar al estudio de cómo se formulan tales controversias en la difusión del …