Sílvia Matos

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We study price setting in a variable macroeconomic environment using a unique data set from the Brazilian CPI index of Fundação Getulio Vargas. Our primary data consist of a panel of individual prices for goods and services covering 100% of the CPI for the 1996-2008 period. During this period a number of important events produced substantial macroeconomic(More)
CONE-BEAM HELICAL CT VIRTUAL ENDOSCOPY: RECONSTRUCTION, SEGMENTATION AND AUTOMATIC NAVIGATION Bruno M. Carvalho Supervisor: Gabor T. Herman Virtual Endoscopy (VE) is a technique in which three-dimensional (3D) data, acquired by an imaging technique such as Computerized Tomography (CT) or Magnetic Resonance Imaging (MRI), is segmented and presented in an(More)
OBJECTIVES An ex vivo model was designed to profilometrically and histologically assess root changes resulting from scaling with a new ultrasonic device, designed for bone piezoelectric surgery, in comparison with curettes. METHODS Three groups of 10 periodontal hopeless teeth were each subjected to different root instrumentation: Gracey curettes (CUR);(More)
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