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This paper reports the performance of a technique for the estimation of single-phase grid voltage fundamental frequency under distorted grid conditions. The technique combines a Teager energy operator ...

In this paper, efficient architectures for realizing the recursive discrete cosine transform (DCT) and the recursive inverse DCT (IDCT) are proposed. By respectively folding the inputs of the DCT and ...

UPDATE: May 18, 2017, 5:06 p.m. SGT Updated with the Ministry of Education's new statement. A math question apparently meant for 7-year-olds has left adults befuddled. The bonus math question ...