João Melo

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The objective of this study was to evaluate the leaf morphology of 57 tree species to determine if there is a dominant leaf pattern in a remnant of the Araucaria Forest, Curitiba, PR, Brazil that can be used as ecological indicator of this forest. We also determined the quantitative morphological and anatomical traits of all species, distributed in 4(More)
A recent kind of Web application incorporates three-dimensional image content, which allows interactivity and new visual experiences to the users. However, rendering 3D video content has been a research challenge due to modeling complexity and visual content definition. This paper proposes an interactive Web application that shows 3D modeled human faces(More)
—This paper presents a 3 rd order 1.5-bit ΣΔ modula-tor with distributed feedback and local resonator feedback for a Class D audio amplifier. In order to improve the signal-to-noise-and-distortion ratio (SNDR), without increasing the oversampling ratio (OSR) or the order of the modulator, the modulator uses transmission zeros and 1.5-bit quantization. High(More)
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