Tathagata Dasgupta

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Software trace ability is the ability to describe and follow the life of a requirement in both a forward and backward direction by defining relationships to related development artifacts. A plethora of different trace ability recovery approaches use information retrieval techniques, which depend on the quality of the textual information in requirements and(More)
The nonlinearities found in molecular networks usually prevent mathematical analysis of network behaviour, which has largely been studied by numerical simulation. This can lead to difficult problems of parameter determination. However, molecular networks give rise, through mass-action kinetics, to polynomial dynamical systems, whose steady states are zeros(More)
Cytokine-hormone network deregulations underpin pathologies ranging from autoimmune disorders to cancer, but our understanding of these networks in physiological/pathophysiological states remains patchy. We employed Bayesian networks to analyze cytokine-hormone interactions in vivo using murine lactation as a dynamic, physiological model system. Circulatory(More)
There are two families of non-BPS bi-spinors in the perturbative spectrum of the nine dimensional heterotic string charged under the gauge group SO(16) × SO(16). The relation between these perturbative non-BPS states and certain non-perturbative non-BPS D-brane states of the dual type I ′ theory is exhibited. The relevant branes include a Z Z 2 charged(More)
The tree-level amplitude for the scattering of two gauge particles constrained to move on the two distinct boundaries of eleven-dimensional space-time in the Hořava–Witten formulation of M-theory is constructed. At low momenta this reproduces the corresponding tree-level scattering amplitude of the E 8 × E 8 heterotic string theory. After compact-ification(More)
In the past decade, there have been many well-publicized cases of source code leaking from different well-known companies. These leaks pose a serious problem when the source code contains sensitive information encoded in its identifier names and comments. Unfortunately, redacting the sensitive information requires obfuscating the identifiers, which will(More)
We observe that the large N world sheet RG in c = 1 matrix model, formulated in [1, 2], with N 2 quantum mechanical degrees of freedom at small compactification radius is capable of capturing dimensional mutation. This manifests in deforming the familiar AdS 2 quantum mechanics in the minisuperspace Wheeler-de Witt (WdW) cosmology of the 2D quantum gravity,(More)
2000. It is original except where reference is made to the work of others. Chapter 4 in its entirety and Chapter 2 partly (as specified therein) represent work done in collaboration with Shahn Majid. All other chapters represent solely my own work. No part of this dissertation nor anything substantially the same has been submitted for any qualification at(More)
Experimental and theoretical studies have suggested that bifunctional enzymes catalyzing opposing modification and demodification reactions can confer steady-state concentration robustness to their substrates. However, the types of robustness and the biochemical basis for them have remained elusive. Here we report a systematic study of the most general(More)