Instituciones para la formaci??n de los maestros gallegos en los finales del siglo XIX

Resumen basado en el de la publicaci??n

El aprendizaje de lenguas extranjeras mediante tecnolog??a m??vil en el contexto de la educaci??n a distancia y combinada

Se estudia el desarrollo que el uso de tecnolog??a m??vil (smartphones y tabletas) ha producido en el ??mbito del aprendizaje de lenguas. El avance de la tecnolog??a, el abaratamiento de tarifas, la presencia de redes inal??mbricas en lugares de paso, transportes y edificios p??blicos y la ampl??sima difusi??n de este tipo de dispositivos, son factores determinantes para su progresiva utilizaci??n en actividades de aprendizaje de lenguas extranjeras. Se ha producido un cambio significativo en el dise??o instruccional de materiales educativos adaptados a dichos dispositivos, que afecta a materiales de nueva creaci??n o ya existentes (de uso m??s general), creados para la interacci??n social y colaborativa. En 2013 surge el grupo de inter??s europeo MALL SIG (Mobile Assisted Language Learning Special Interest Group) que tiene por objetivo fomentar la investigaci??n en esta ??rea y que se re??ne semestral o anualmente para presentar los resultados y conclusiones.

El juego de la oca

El trabajo obtuvo un premio de la Modalidad A de los Premios Tom??s Garc??a Verdejo a las buenas pr??cticas educativas en la Comunidad Aut??noma de Extremadura para el curso 2011-2012

Anharmonicity contributions to the vibrational second hyperpolarizability of conjugated oligomers

Restricted Hartree-Fock 6-31G calculations of electrical and mechanical anharmonicity contributions to the longitudinal vibrational second hyperpolarizability have been carried out for eight homologous series of conjugated oligomers - polyacetylene, polyyne, polydiacetylene, polybutatriene, polycumulene, polysilane, polymethineimine, and polypyrrole. To draw conclusions about the limiting infinite polymer behavior, chains containing up to 12 heavy atoms along the conjugated backbone were considered. In general, the vibrational hyperpolarizabilities are substantial in comparison with their static electronic counterparts for the dc-Kerr and degenerate four-wave mixing processes (as well as for static fields) but not for electric field-induced second harmonic generation or third harmonic generation. Anharmonicity terms due to nuclear relaxation are important for the dc-Kerr effect (and for the static hyperpolarizability) in the σ-conjugated polymer, polysilane, as well as the nonplanar π systems polymethineimine and polypyrrole. Restricting polypyrrole to be planar, as it is in the crystal phase, causes these anharmonic terms to become negligible. When the same restriction is applied to polymethineimine the effect is reduced but remains quantitatively significant due to the first-order contribution. We conclude that anharmonicity associated with nuclear relaxation can be ignored, for semiquantitative purposes, in planar π-conjugated polymers. The role of zero-point vibrational averaging remains to be evaluated

Progress Report No. 6

Progress report of the Biomedical Computer Laboratory, covering period 1 July 1969 to 30 June 1970.

The application of a specific interest inventory to the deaf

This paper discusses vocational interests of hearing impaired children.

Classroom acoustics: the national acoustic standard

This paper discusses the variables affecting classroom acoustics and a case study examination of some local classrooms. Classrooms were measured against proposed American National Standards Institute (ANSI) standards and treatment options for improving acoustics are suggested.