Short reflections on the history of African communication

This article aims to propose a chronological subdivision in the history of African communication. African communication today is one of the most important axes for implementing development strategies, sustaining education, health, and schooling programmes, and so on. However, many of these programmes fail due to a lack of or ineffective communication between international organisations, local elite and lay people. The reasons for this situation must be found in Africa’s history of communication, which has undergone radical transformations in its different phases. Using the functionalist analysis drawn up by Jakobson, this article proposes a new chronological subdivision of Africa’s history of communication, reflecting on the current contradictions in contemporary communication in Africa.

Motivaciones y factores sociales en el uso de la tecnología de las comunicaciones en la educación.

Se analizan los factores pedagógicos, sociales y de motivación que influyen en la eficacia de la nueva tecnología de las comunicaciones para la educación a distancia. Algunas de las experiencias se han llevado a cabo en países en vías de desarrollo, especialmente en América Latina, debido a los grandes problemas educacionales y al proceso de transformación social en el que se encuentran. Aunque la innovación educativa implantada en un país no puede ser copiada exactamente sí se pueden analizar ciertos factores con el fin de adaptar la nueva tecnología a circunstancias particulares. El estudio se divide en cuatro apartados: el primero se ocupa de la importancia de la nueva tecnología de las comunicaciones y de las actuales orientaciones de la investigación en esta área; el segundo trata de los factores de motivación que más influyen en la educación a distancia; el tercero señala algunos factores pedagógicos que deben ser tenidos en cuenta; y el cuarto ofrece algunos análisis de los factores sociales que influyen en la educación a distancia.

Characterization of Mayven, a Novel Actin-binding Protein Predominantly Expressed in Brain

The cytoskeleton plays an important role in neuronal morphogenesis. We have identified and characterized a novel actin-binding protein, termed Mayven, predominantly expressed in brain. Mayven contains a BTB (broad complex, tramtrack, bric-a-brac)/POZ (poxvirus, zinc finger) domain-like structure in the predicted N terminus and “kelch repeats” in the predicted C-terminal domain. Mayven shares 63% identity (77% similarity) with the Drosophila ring canal (“kelch”) protein. Somatic cell-hybrid analysis indicated that the human Mayven gene is located on chromosome 4q21.2, whereas the murine homolog gene is located on chromosome 8. The BTB/POZ domain of Mayven can self-dimerize in vitro, which might be important for its interaction with other BTB/POZ-containing proteins. Confocal microscopic studies of endogenous Mayven protein revealed a highly dynamic localization pattern of the protein. In U373-MG astrocytoma/glioblastoma cells, Mayven colocalized with actin filaments in stress fibers and in patchy cortical actin-rich regions of the cell margins. In primary rat hippocampal neurons, Mayven is highly expressed in the cell body and in neurite processes. Binding assays and far Western blotting analysis demonstrated association of Mayven with actin. This association is mediated through the “kelch repeats” within the C terminus of Mayven. Depolarization of primary hippocampal neurons with KCl enhanced the association of Mayven with actin. This increased association resulted in dynamic changes in Mayven distribution from uniform to punctate localization along neuronal processes. These results suggest that Mayven functions as an actin-binding protein that may be translocated along axonal processes and might be involved in the dynamic organization of the actin cytoskeleton in brain cells.

Reports of cases argued and determined in the Supreme Court of Appeals of West Virginia.

Mode of access: Internet.

La nueva Farmacopea del Real Colegio de Médicos de Londres, y su análisis ... /

Mode of access: Internet.

Euterpe, a collection of madrigals and other music of the sixteenth and seventeenth centuries.

Contains works by: Bateson, Thos.; Byrd, Wm.; Wilbye, John; Vautor, Thos.; Dowland, John; Lichfield, Henry; Rosseter, Philip; Campion, Thos.; Mundy, John; Ravenscroft, Thos.; Weelkes, Thos.; Morley, Thos.; White, Robert; Pilkington, Francis; Youll, Thos.; Bartlet, John; Gibbons, Orlando; Philips, Peter.

The present practice of surgery : containing the description, causes, and treatment of each complaint ; together with the most approved methods of operating /

Mode of access: Internet.

England : a poem /

Mode of access: Internet.

Antiquae literaturae septentrionalis libri duo : quorum primus Georgii Hickesii, S.T.P. Linguarum Vett. septentrionalium Thesaurum grammatico-criticum & archaeologicum, ejusdem de antiquae literaturae septentrionalis utilitate dissertationem epistolarem, et Andreae Fountaine equitis aurati Numismata Saxonica & Dano-Saxonica complectitur, alter continet Humfredi Wanleii Librorum Vett. septentrionalium, qui in Angliae Biblioth. extant ... cum totius operis sex indicibus

Linguarum Vett. septentrionalium thesaurus grammatico-criticus et archaelogicus. 1705 : Linguarum Vett. septentrionalium thesauri ... pars prima[-tertia]. 1703 ; De antiquae litteraturae septentrionalis utilitate usu ... Dissertatio epistolaris ad Bartholomaeum Showere. 1703 ; Numismata Anglo-Saxonica & Anglo-Danica breviter illustrata ab Andrea Fountaine. 1705 ; Antiquae literaturae septentrionalis liber alter seu Humpredi Wanleii ... 1705 ; Indices totius operis. 1703.

1962 Ice Hockey Team