In this paper, an interval Type-2 fuzzy logic based pitch angle controller is proposed for fixed speed wind energy system (WES) to maintain the aerodynamic power at its rated value. The pitch angle reference is generated by the proposed controller which can compensate the non-linear characteristics of the pitch angle to the wind speed. The presence of third dimension in the Type-2 fuzzy logic c...

Abstract In this paper, a Computational Fluid-Dynamics (CFD) analysis on heat transfer characteristic using Reynolds Averaged Navier-Stokes (RANS) equations rectangular channel with ribbed surfaces is presented. Several numerical simulations have been carried out convective of an air flow through 1:10 aspect ratio, 120 mm wide, 840 long, 90° ribs. Ribs square cross section 4 side and three diff...

In this paper we examine the status of lexical tones in Sylheti. Sylheti is generally considered to be one of the varieties of Bangla (belonging to the Indo-Aryan language family). The consonant inventory of Sylheti has undergone significant reduction and restructuring, and lost all the aspirated stops due to obstruent weakening ([bai>bai] „brother‟, [lat̪i> lat̪i] „kick‟) and spirantization of t...

Auditory continuity is a powerful illusion which has implications for the efficient coding of sound. Although auditory continuity has been studied extensively as a monaural phenomenon, there have been few reports of the influence of binaural factors. Hartmann [1] and Kashino & Warren [2] report that when a tone alternates with a noise, the continuity threshold of the tone is lower when the tone...

of the Dissertation Robust Speech and Bird Song Processing using Multi-band Correlograms and Sparse Representations by Lee Ngee Tan Doctor of Philosophy in Electrical Engineering University of California, Los Angeles, 2014 Professor Abeer Alwan, Chair This dissertation focuses on algorithms for robust speech and bird song processing. Many applications perform well under ideal signal conditions,...

It has long been claimed that spectral envelope features outperform prosodic features on speaker recognition tasks. However, the reasons for such an arrangement are not entirely compelling. In the current work we present some evidence to challenge these claims. We propose that energy found at harmonically related frequencies encodes the acoustic correlates of variables which are typically refer...

There is a tendency across languages to use a rising pitch contour to convey question intonation and a falling pitch contour to convey a statement. In a lexical tone language such as Mandarin Chinese, rising and falling pitch contours are also used to differentiate lexical meaning. How, then, does the multiplexing of the F(0) channel affect the perception of question and statement intonation in...

abstractthe liquid crystal director distribution is determined for a confined chiral nematic slab. the molecular director distribution of the field-controlled chiral nematic slab is directly calculated. the director profiles for the tilt and the twist angles, under different applied fields, are calculated in the slab with weak boundary conditions. then, the dependence of the threshold field on ...