CAMBIO SOCIAL Y TENDENCIAS EN LA TASA DE CRIMINALIDAD: UN ENFOQUE DESDE LAS ACTIVIDADES COTIDIANAS

Las teorías del crimen irrumpieron en el estudio científico del delito a finales de la década de 1970, siendo sin duda el artículo de Lawrence E. Cohen y Marcus Felson que aquí se traduce uno de los principales impulsores de ese cambio de perspectiva en el estudio y análisis de la delincuencia.Traducción y nota previa: Miguel Ángel Cano Paños

Theory for the electromigration wind force in dilute alloys

A multiple scattering formulation for the electromigration wind force on atoms in dilute alloys is developed. The theory describes electromigration via a vacancy mechanism. The method is used to calculate the wind valence for electromigration in various host metals having a close-packed lattice structure, namely aluminum, the noble metals copper, silver and gold and the $4d$ transition metals. The self-electromigration results for aluminum and the noble metals compare well with experimental data. For the $4d$ metals small wind valences are found, which make these metals attractive candidates for the experimental study of the direct valence.Comment: 18 pages LaTeX, epsfig, 8 figures. to appear in Phys. Rev. B 56 of 15/11/199