Soham Biswas

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It has been shown that, if a model displays long-range (power-law) spatial correlations, its equal-time correlation matrix will also have a power law tail in the distribution of its high-lying eigenvalues. The purpose of this paper is to show that the converse is generally incorrect: a power-law tail in the high-lying eigenvalues of the correlation matrix(More)
The objective of this paper is to develop a microcontroller based QRS detection technique for ECG signal. The work is performed in two stages. Synthetic ECG data is used for validation of the technique from Physionet database. At first MATLAB simulation is performed on single lead ECG data with 8-bit digital format. In the next stage, this is implemented in(More)
Ruellia tuberosa Linn (cracker plant) of Acanthaceae family is a common flowering plant having enormous medicinal importance. It grows often as a weed in the rainy season. It is native of Central America but has spread in many tropical countries including India. The present study investigates the antioxidant property of aqueous leaf extract of this plant.(More)
A model for opinion dynamics (Model I) has been recently introduced in which the binary opinions of the individuals are determined according to the size of their neighboring domains (population having the same opinion). The coarsening dynamics of the equivalent Ising model shows power law behavior and has been found to belong to a new universality class(More)
In two different classes of network models, namely, the Watts Strogatz type and the Euclidean type, subtle changes have been introduced in the randomness. In the Watts Strogatz type network, rewiring has been done in different ways and although the qualitative results remain same, finite differences in the exponents are observed. In the Euclidean type(More)
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