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- S. Tiwari, S. Ramachandran, Alok Bhattacharya, S. Bhattacharya, Ramakrishna Ramaswamy
- Computer Applications in the Biosciences
- 1997

MOTIVATION
The major signal in coding regions of genomic sequences is a three-base periodicity. Our aim is to use Fourier techniques to analyse this periodicity, and thereby to develop a tool toâ€¦ (More)

- Deepak Sharma, Biju Issac, Gajendra P. S. Raghava, Ramakrishna Ramaswamy
- Bioinformatics
- 2004

MOTIVATION
Repetitive DNA sequences, besides having a variety of regulatory functions, are one of the principal causes of genomic instability. Understanding their origin and evolution is ofâ€¦ (More)

- Awadhesh Prasad, Juergen Kurths, Syamal Kumar Dana, Ramakrishna Ramaswamy
- Physical review. E, Statistical, nonlinear, andâ€¦
- 2006

We present a general bifurcation in the synchronized dynamics of time-delay-coupled nonlinear oscillators. The relative phase between the oscillators jumps from zero to pi as a function of theâ€¦ (More)

- Gautam Aggarwal, Ramakrishna Ramaswamy
- Journal of Biosciences
- 2002

We compare the annotation of three complete genomes using theab initio methods of gene identification GeneScan and GLIMMER. The annotation given in GenBank, the standard against which these areâ€¦ (More)

- Rajeev K. Azad, Jagannatha K. S. Rao, Wentian Li, Ramakrishna Ramaswamy
- Physical review. E, Statistical, nonlinear, andâ€¦
- 2002

By using the Jensen-Shannon divergence, genomic DNA can be divided into compositionally distinct domains through a standard recursive segmentation procedure. Each domain, while significantlyâ€¦ (More)

Recently, the phase-flip bifurcation has been described as a fundamental transition in time-delay coupled, phase-synchronized nonlinear dynamical systems. The bifurcation is characterized by a changeâ€¦ (More)

- Amitabha Nandi, Candida Vaz, Alok Bhattacharya, Ramakrishna Ramaswamy
- BMC Systems Biology
- 2008

We have studied the dynamics of miRNA regulation in two models of circadian oscillators. miRNAs are a class of small RNA molecules (18â€“24 nucleotides) that are known to regulate gene expression atâ€¦ (More)

- Somdatta Sinha, Ramakrishna Ramaswamy
- Journal of theoretical biology
- 1988

The repressor-mediated repression process in bacteria is modelled using a gene-enzyme-endproduct control unit. A combined analytical-numerical study shows that the system, though stable normally,â€¦ (More)

- Gabriela Alexe, Gyan Bhanot, +4 authors Gustavo Stolovitzky
- 2005 IEEE Computational Systems Bioinformaticsâ€¦
- 2005

One of the major challenges in cancer diagnosis from microarray data is to develop robust classification models which are independent of the analysis techniques used and can combine data fromâ€¦ (More)

- A. S. Hari Prasad, Ramakrishna Ramaswamy
- Physical review. E, Statistical physics, plasmasâ€¦
- 1999

We study the probability densities of finite-time or local Lyapunov exponents in low-dimensional chaotic systems. While the multifractal formalism describes how these densities behave in theâ€¦ (More)