etd AT Indian Institute of Science: Recent submissions
Now showing items 921-940 of 8174
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In-Situ Shear Wave Velocity Measurement and Interpretation by Different Methods of Testing
A significant challenge in seismic site classification often arises from the conflicting shear wave velocity (VS) profiles often obtained using different survey methods, further complicated by uncertainties introduced when ... -
Studies on the Lewis Acidity of Redox-Active Telluranes and the Catalytic Applications of a Low-Valent Iron Complex
Recent advances in catalysis have expanded the landscape of both main group and transition metal catalysts, moving beyond traditional boron- and aluminum-based main group systems and 2nd -3rd row transition metal systems ... -
Towards microwave excitation-free broadband single photon source using Landau-Zener transitions in a flux qubit
Single photon sources are essential resources for quantum computation, quantum communication, quantum information processing, quantum cryptography and other applications. Over the past two decades, superconducting circuits ... -
Exploration and Misspecification in Reinforcement Learning
Among the basic challenges that confront reinforcement learning are exploration – the need to search effectively over large and complex state-action spaces – and misspecification, which arises from using function ... -
Investigating the geodynamics of the Indian plate using time-dependent mantle convection models
The northward migration of the Indian plate after breaking apart from Pangaea in Mesozoic followed by its collision with Eurasia during Cenozoic is a remarkable example of continental drift. Associated with this tectonic ... -
Rotary atomization of non-Newtonian liquids for Spray drying applications
Food wastage poses a significant threat to the nation’s food supply and safety due to inadequate storage infrastructure and logistics facilities. This study explores the potential of spray drying as a viable solution to ... -
Zero Knowledge Proofs: Succinct Verification, Distributed Proofs and Lookup Arguments
Zero-Knowledge Proofs (ZKPs) are fundamental cryptographic tools enabling a prover to convince a verifier about the knowledge of a secret witness related to a public statement, without revealing any information beyond the ... -
Secure Vickrey Auctions with Rational Parties
In this work, we construct a second price (Vickrey) auction protocol (SPA), which does not require any auctioneers and ensures total privacy in the presence of rational parties participating in the auction. In particular, ... -
Theoretical Investigations of Excited State Proton Transfer in Selected Molecular Systems
Excited state proton transfer (ESPT) plays a key role in various chemical and biological systems, including DNA where it plays a role in the deactivation mechanism. Compared to the ground state, molecules typically have ... -
Engineering 2D Materials and Heterostructures for Advanced Gas Sensing and Molecular Memory Devices
The increasing need for monitoring environmental health has spurred the search for advanced sensing materials to create energy efficient, low cost, light weight gas sensing systems. The inherent attributes of 2D materials, ... -
Design,fabrication and instrumentation of a broadcast bus multicomputer system
In this thesis, we propose, design, and give the implementation details of a Multicomputer System called the Broadcast Bus Multicomputer System (BBMS). We also model the message broadcast bus and compare the analytical ... -
Magnetic braking as a solution to the angular momentum problem of ellptical galaxies
The following idea is explored in this thesis: the angular momentum problem of elliptical galaxies can be solved by invoking magnetic braking operating during the formative phases of protoelliptical galaxies. For reducing ... -
Dissipative dynamics of classical and quantum systems
The organization is as follows. In Chapter II we introduce specific systems of interest, such as RBCs, microemulsions, tethered surfaces, and monolayer films of smectic-A and smectic-B systems. In Chapter III we calculate ... -
Study of giant radio galaxies.
Within the framework of the beam model, we have deduced some basic physical parameters of the jets and hotspots associated with classical double radio sources, following a simple approach which is based on the assumptions ... -
Effect of a QSO on its host galaxy
Various arguments and observations have led to a general belief that QSO phenomenon is a form of violent activity in the nuclei of galaxies. It is natural to expect that a powerful source of high energy radiation like a ... -
Charged solution excitations and the vaccum state of.. field theories
This thesis describes some theoretical investigations on ?? field theories (i.e., theories governed by Lagrangians which are sixth-degree polynomials in ?) where ? is either a real or a complex scalar field. We work in ... -
Unified geometrical framework for gauge symmetries
The effort to discover a conceptual unity among various phenomena in the physical world is one of the major intellectual endeavours of the human mind. It is surprising that Nature apparently supports such an instinct, for, ... -
Superconducting electron pairing in the presence of a radiation field
The thesis discusses superconducting electron pairing in the presence of a radiation field. This phenomenon also called photo-induced superconductivity was studies by kumar and Sinha in 1968. It was found that microwave ... -
Topics in the statistical mechanics of extended objects
In this thesis, we study some aspects of the equilibrium and nonequilibrium statistical mechanics of physical systems with extended spatial degrees of freedom. The specific systems we model are: The Abrikosov fiux lattice ... -
Study Of the Cometary Globules in the Gum Nebula
From our analysis of the measured velocities of cometary globules (CGs), we draw the following conclusions: Kinematic Interpretation The motion of the CGs cannot be explained by a model dominated by galactic rotation, ...