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Search Results: 1 - 10 of 190270 matches for " G. Balakrishnan "
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Ischaemic contracture of the hand
Balakrishnan G
Indian Journal of Plastic Surgery , 2006,
Robust Speech Feature Prediction Using Mel-LPC to Improve Recognition Accuracy
S. Lokesh,G. Balakrishnan
Information Technology Journal , 2012,
Abstract: The goal of the proposed study is robust speech feature prediction using mel-LPC to improve the performance of speech recognition in adverse conditions and compares the performance with those standard LPC and MFCC through English dictation system with 14,000 isolated words and 9,000 connected words. The mel-LPC feature prediction is estimated by an optimal value of frequency warping factor that can be estimated from the auto-correlation coefficients and it is computed as the inverse Fourier transform of the power spectrum to generate feature extract vector. Results of the feature extraction are a sequence of 18 mel-LPC coefficients which characteristic of the time-varying spectral properties of the speech signal and these are continuous that can map to discrete vectors in vector quantization codebook. This system is trained by 10 male and 10 female speakers and tested with 200 speakers in noisy and clean environments. Experiments results for various tasks show that with new mel-LPC feature vector system attains isolated and connected word accuracy of 97.5 and 93.2% for male speakers and 96.6 and 92.3% for female speakers with large vocabularies. The result shows that recognition accuracy is relatively higher than LPC and MFCC, respectively.
Comparative study for two color spaces HSCbCr and YCbCr in skin color detection
S. Chitra,G. Balakrishnan
Applied Mathematical Sciences , 2012,
An improved effective potential for electroweak phase transitions
Janaki Balakrishnan,Ian G. Moss
Physics , 1994, DOI: 10.1103/PhysRevD.49.4113
Abstract: It is shown that improved potentials and corrected mass terms can be introduced by using a quadratic source term in the path integral construction for the effective action. The advantage of doing things this way is that we avoid ever having to deal with complex propagators in the loop expansion. The resulting effective action for electroweak phase transitions is similar to the usual results.
On the applicability of Sato's equation to capacitative radio frequency sheaths
J. Balakrishnan,G. R. Nagabhushana
Physics , 2003, DOI: 10.1088/0022-3727/33/24/101
Abstract: We show that the time dependent version of Sato's equation, when applied to capacitative rf sheaths is no longer independent of the electric field of the space charge, and discuss the use of the equation for a specific sheath model.
Ultrasonic Studies of Amino Acids in Aqueous Sucrose Solution at Different Temperatures
R. Palani,S. Balakrishnan,G. Arumugam
Journal of Physical Science , 2011,
Abstract: The density (ρ), viscosity ( ) and ultrasonic velocity (U) were measured for L-histidine, L-arginine and L-lysine in aqueous sucrose (0.5 M) solution at 298, 303 and 308 K. Using the experimental values, the adiabatic compressibility (β), hydration number (nH), apparent molal compressibility ( K), apparent molal volume ( V), limitingapparent molal compressibility ( K0 ), limiting apparent molal volume ( V0 ), theassociated constants (SK, SV) and the viscosity B coefficient of the Jones-Dole equation were calculated. These parameters were used to study the ion-solvent interaction present in each solution.
Optical and Electrical Conductivity Measurements of GLO Single Crystals for NLO Applications
G. Anbazhagan,P.S. Joseph,G. Shankar,T. Balakrishnan
Asian Journal of Information Technology , 2012, DOI: 10.3923/ajit.2012.36.39
Abstract: Single crystals of semi-organic material (GLO) have been grown from aqueous solution by slow evaporation techniques. The lattice parameters for the grown crystals where determined by the single crystal X-ray diffraction analysis. The presences of functional groups was estimated qualitatively by using fourier transforms infrared spectrum source that UV cut-off wavelength for the grown is at 220 nm. The optical band gap was found to be 5.6473 eV. Finally the optical conductivity and electrical conductivity studies have been carried out on this crystal.
Analyzing of Optical Band Gap in Bis Glycine Cobalt Sulfate Single Crystal
G. Anbazhagan,P.S. Joseph,G. Shankar,T. Balakrishnan
Journal of Engineering and Applied Sciences , 2012, DOI: 10.3923/jeasci.2012.290.294
Abstract: Single crystals are Bis Glycine Cobalt Sulfate (BGCS) recently investigated nonlinear optical materials were grown by slow evaporation techniques. Optical absorption of the crystals of BGCS has been measured at room temperature from which the optical band gap has been determined using the absorption spectrum as 5.90 eV. Vibrational modes of grown crystals were conformed by FTIR spectrum. The optical absorption spectrum shows that the UV cut-off wavelength for the grown crystal is at 240 nm. The optical constant (α, K, R) were also evaluated.
Wearable Real-Time Stereo Vision for the Visually Impaired
G. Balakrishnan,G. Sainarayanan,R. Nagarajan,Sazali Yaacob
Engineering Letters , 2007,
Spectral evolution in a Shastry-Sutherland lattice, HoB(4)
D. Biswas,N. Sahadev,G. Adhikary,G. Balakrishnan,K. Maiti
Physics , 2013, DOI: 10.1103/PhysRevB.88.134405
Abstract: We studied the electronic structure of a Shastry-Sutherland lattice system, HoB4 employing high resolution photoemission spectroscopy and ab initio band structure calculations. The surface and bulk borons exhibit subtle differences, and loss of boron compared to the stoichiometric bulk. However, the surface and bulk conduction bands near Fermi level are found to be similar. Evolution of the electronic structure with temperature is found to be similar to that observed in a typical charge-disordered system. A sharp dip is observed at the Fermi level in the low temperature spectra revealing signature of antiferromagnetic gap. Asymmetric spectral weight transfer with temperature manifests particle-hole asymmetry that may be related to the exotic properties of these systems.
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