We investigate the excitation of plasmons by a fast charged particle moving in the vicinity or traversing the surface of a solid along an arbitrary trajectory. We use both quantum-mechanical and semiclassical dielectric ...

In this work, we analyze the interaction of moving charged particles with plasmons in a semi-infinite material. For planar surfaces, and in the frame of a semiclassical dielectric formulation, we analyze the differences ...

Bulow and Rogoff (1989) proved that, in a competitive financial market, the threat of credit exclusion alone cannot sustain repayment of sovereign debt, as the defaulting government can still enter cash-in-advance insurance ...

The present research demonstrates a dissociation between explicit and implicit intergroup evaluation in the reciprocal attitudes between indigenous (Mapuche) and non-indigenous Chileans. In both social groups, the explicit ...

Posture can be defined as the overall position and spatial orientation of the human body and its members relative to each other. The study of posture can be applied either static, with the subject standing still. Objectives: ...

Posture can be defined as the overall position and spatial orientation of the human body and its members relative to each other. The study of posture can be applied either static, with the subject standing still. Objectives: ...

This research examines the ways in which information, hereby understood as a symbolic form, pervades the process by which social representations and identity narratives are articulated and re-signified by the residents, ...

Ao se olhar o mundo monocularmente, não se percebe que há uma mancha cega no campo visual correspondente ao disco óptico, região da retina em que não há fotorreceptores. Ao contrário, bordas e padrões de superfícies são ...