Xtable is a prototype interactive tabular editor and formatter for the design of high-quality tables and for the exploration of tabular data from diierent viewpoints. It abstracts the multidimensional logical structure of a table and provides a mechanism to map an abstract table into diierent two-dimensional presentations. We present Xtable from four aspects: abstract model, presentational mode...

The OpenGL geometry pipeline lighting stage requires raising a number in the range [0, 1] to a power between [1, 128] to compute specular reflections and spotlights. The result need only be accurate to a number of bits related to the color depth of the output device. This paper describes a hardware implementation of such a powering unit based on a logarithm lookup table, a multiplier, and an in...

This paper presents the mechanical design and experimental characterization of a 2-DOF serial flexurebased micropositioning table. The cascade mechanical structure is proposed to implement planar motions of the moving platform. In order to increase the stroke of the moving platform, a lever mechanism is designed to amplify the displacement of the piezoelectric actuator. The finite element metho...