EDITORIAL v. 6, n. 4, Edição Especial 2013

Edição Especial: Computação Social Aplicada a E-learning

Editorial Especial: Sección Especial sobre Ingeniería del Software en eLearning

This invited editorial introduces a special section of the IEEE-RITA journal devoted to ISELEAR’11, the Second workshop on Software Engineering for eLearning held in Madrid, Spain, in September 2011. This section includes the revised and extended version of one paper selected in this 2011 edition of ISELEAR. The editorial summarizes the history of the ISELEAR Workshops and the related efforts, ...

N 4,N 6-Dimethyl-5-nitro-N 4,N 6-diphenyl­pyrimidine-4,6-diamine

In the title compound, C(18)H(17)N(5)O(2), the pyrimidine ring makes dihedral angles of 66.09 (12), 71.39 (13) and 56.7 (3)° with two phenyl rings and the nitro group, respectively. The dihedral angle between the two phenyl rings is 44.05 (14)°.

N 4,N 6-Dimethyl-N 4,N 6-diphenyl­pyrimidine-4,5,6-triamine

In the title compound, C(18)H(19)N(5), the pyrimidine ring makes dihedral angles of 56.49 (9) and 70.88 (9)° with the phenyl rings. The dihedral angle between the two phenyl rings is 72.45 (9)°. No significant inter-molecular inter-actions are observed in the crystal structure.

Editorial Especial: Adoptando Estándares y Especificaciones para Contenidos Educativos

aprendizaje electrónico facilitan la reutilización de recursos educativos, así como al comunicación entre sistemas heterogéneos. En este número especial de IEEE RITA presentamos una selección de cinco trabajos realizados por renombrados expertos internacionales en este ámbito. La iniciativa de realizar esta publicación especializada surge de la Best Practice Network europea con el mismo nombre:...