Cheng-Ying Yu

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In this paper, we propose a new CORDIC algorithm and architectures which can generate close-to-optimum rotation sequences easily with small lookup table sizes. This new design is particularly suitable for the applications of adjustable-length FFT. In all, the required number of shift-and-add operations for micro-rotations and scale-factor compensations is(More)
Bioassay-guided fractionation of the CHCl3 layer of Solanum violaceum areal parts methanolic extract led to the isolation of four new steroidal sapogenins, indiosides L-O (1-4), along with eight known steroids, one lignin, and a coumarin. Indioside L is a rare spirostanoid possessing a 1,4-dien-3-one moiety in ring A. Moreover, compounds 3 and 4 represent(More)
INTRODUCTION To examine the prevalence rates and correlates of dependence on, misuse of, and beliefs regarding use of hypnotics in elderly psychiatric patients with long-term use of zolpidem, estazolam, or flunitrazepam. METHODS A total of 139 psychiatric outpatients 65 or more years of age who used zolpidem, estazolam, or flunitrazepam for at least 3(More)
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