Spin-polarized transport in ferromagnetic multilayered semiconductor nanostructures

The occurrence of inhomogeneous spin-density distribution in multilayered ferromagnetic diluted magnetic semiconductor nanostructures leads to strong dependence of the spin-polarized transport properties on these systems. The spin-dependent mobility, conductivity and resistivity in (Ga,Mn)As/GaAs,(Ga,Mn)N/GaN, and (Si,Mn)/Si multilayers are calculated as a function of temperature, scaled by the average magnetization of the diluted magnetic semiconductor layers. An increase of the resistivity near the transition temperature is obtained. We observed that the spin-polarized transport properties changes strongly among the three materials.Comment: 3 pages, 4 figure

Strategic Formulation of CIEE Lisbon

In an era in which the market is increasingly competitive and globalized, companies are forced to rethink and innovate their strategy. This investigation aims to determine if CIEE Lisbon is implementing corporate strategies in order to reach its strategic goals and increase its business performance. This study used a qualitative methodology based on detailed content analysis of 18 interviews. The article concludes that CIEE is implementing diversification strategies that allow it to grow organically and to create barriers to new competitors. It is also possible to conclude that the formation of strategic alliances is vital in the company's success, having a direct and positive impact on consumer satisfaction. Finally, this research shows that a merger and/or acquisition is not a viable option for the company at this time.info:eu-repo/semantics/publishedVersio

Competitividade dos principais produtos agropecuários do Brasil - vantagem comparativa revelada normalizada.

Este trabalho visa analisar a competitividade dos principais produtos agropecuários brasileiros por meio de um índice alternativo, o índice de vantagem comparativa revelada normalizado (VCRN), no período entre 1996 e 2007

Estudo dos solos do município de Herval.

bitstream/item/41396/1/Herval.pdf; bitstream/item/41397/1/mapa-geomorfologia.pdf; bitstream/item/41398/1/mapa-solos.pdf; bitstream/item/41399/1/mapa-uso-das-terras.pd

Estudo dos solos do município de Morro Redondo.

bitstream/item/41408/1/Morro-Redondo.pdf; bitstream/item/41409/1/mapa-geomorfologia-e-solos.pdf; bitstream/item/41410/1/mapa-solos.pdf; bitstream/item/41411/1/mapa-uso-das-terras.pd

Estudos de solos do município de Tiradentes do Sul - RS.

bitstream/item/30817/1/Circular-58.pdf; bitstream/item/41521/1/aptidao-agricola.pdf; bitstream/item/41522/1/capacidade-de-uso.pdf; bitstream/item/41523/1/formas-de-relevo.pdf; bitstream/item/41524/1/MAPA-TIRADENTES2.pdf; bitstream/item/41525/1/solos.pdf; bitstream/item/41526/1/tiradentes-altimetria.pd

Estudo de solos do município de Santo Augusto - RS.

bitstream/item/41476/1/Trab225-04CircularTec39-SantoAugusto.pdf; bitstream/item/41480/1/mapa-aptidao.pdf; bitstream/item/41482/1/mapa-capacidade.pdf; bitstream/item/41483/1/mapa-relevo.pdf; bitstream/item/41484/1/mapa-solos.pd

Estudo dos solos do município de Jaguarão.

bitstream/item/41400/1/Jaguarao.pdf; bitstream/item/41401/1/mapa-geomorfologia-e-solos.pdf; bitstream/item/41402/1/mapa-solos.pdf; bitstream/item/41403/1/mapa-uso-das-terras.pd

Estudo dos solos do município de Rio Grande.

bitstream/item/41404/1/Rio-Grande.pdf; bitstream/item/41405/1/mapa-geomorfologia-e-solos.pdf; bitstream/item/41406/1/mapa-solos.pdf; bitstream/item/41407/1/mapa-uso-da-terra.pd