Abhishek Kumar Dubey

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—In this paper, we develop an analytical framework which explains the emergence of superpeer networks on execution of the commercial peer-to-peer bootstrapping protocols by incoming nodes. Bootstrapping protocols exploit physical properties of the online peers like resource content, processing power, storage space, connectivity etc as well as take the(More)
1 Overview In the last lecture, we discussed the electrical flows and proved a characteristic property of such flows. We showed that the electrical flows are energy minimizer among all flows. We also formulated the electrical flow problem as a linear system of equations and argued that such linear systems can be solved using laplacian system solvers iñ O(m)(More)
Purpose: The inverse of a deformation vector field (DVF) is often needed in deformable registration, 4D image reconstruction, and adaptive radiation therapy. This study aims at improving both accuracy with respect to inverse consistency and efficiency for numerical DVF inversion, by the development of a fixed-point iteration method with feedback control.(More)
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