http://dyuthi.cusat.ac.in:80/xmlui/handle/purl/480 Wed, 19 Jun 2013 16:28:18 GMT 2013-06-19T16:28:18Z http://dyuthi.cusat.ac.in:80/xmlui/bitstream/id/727/CA6NSLSW photo.jpg http://dyuthi.cusat.ac.in:80/xmlui/handle/purl/480 http://dyuthi.cusat.ac.in:80/xmlui/handle/purl/2707 Frustrated limit cycle and irregular behaviour in a nonlinear pendulum Ambika, G; Nandakumaran, V M We discuss how the presence of frustration brings about irregular behaviour in a pendulum with nonlinear dissipation. Here frustration arises owing to particular choice of the dissipation. A preliminary numerical analysis is presented which indicates the transition to chaos at low frequencies of the driving force. Thu, 25 Jan 1990 00:00:00 GMT http://dyuthi.cusat.ac.in:80/xmlui/handle/purl/2707 1990-01-25T00:00:00Z http://dyuthi.cusat.ac.in:80/xmlui/handle/purl/2706 Nonlinear Analysis of an Electroencephalogram (ECG) During Epileptic Seizure Lalaja, Varghese; V P N Nampoori; Pratap, R A mathematical analysis of an electroencephalogram of a human Brain during an epileptic seizure shows that the K2 entropy decreases as compared to a clinically normal brain while the dimension of the attractor does not show significant deviation. Tue, 20 Oct 1987 00:00:00 GMT http://dyuthi.cusat.ac.in:80/xmlui/handle/purl/2706 1987-10-20T00:00:00Z http://dyuthi.cusat.ac.in:80/xmlui/handle/purl/2659 Electrical conductivity, dielectric properties and phase transition in ethylenediammonium sulphate single crystals Santhakumari, N C; Vallabhan, C P G D.C. and a.c. electrical conductivities, dielectric constant and dielectric loss factor in single crystals of ethylenediammonium sulphate, (H3NCH2CH2NH3)(SO4), have been measured axiswise as a function of temperature. Anomalous variations in all the above properties at 480 K indicate the occurrence of a phase transition in the above material at this temperature. The existence of such a phase transition is also confirmed by DSC measurements. Electrical conductivity results are analysed and the activation energies of conduction at different temperature regions have been evaluated from the logσ vs 103T−1 plot. Possible mechanisms for the electrical conduction process are discussed, the available results being in favour of a proton transport model. Fri, 01 May 1992 00:00:00 GMT http://dyuthi.cusat.ac.in:80/xmlui/handle/purl/2659 1992-05-01T00:00:00Z http://dyuthi.cusat.ac.in:80/xmlui/handle/purl/2658 Measurement of thermal diffusivity of some halogeno benzimidazole complexes of cobalt(II), copper (II) and copper(I) using laser induced photoacoustic effect Sankara Raman, S; Nampoori, V P N; Vallabhan, C P G; Saravanan, N; Mohammed Yusuff, K K Mon, 01 Jan 1996 00:00:00 GMT http://dyuthi.cusat.ac.in:80/xmlui/handle/purl/2658 1996-01-01T00:00:00Z