etd AT Indian Institute of Science: Recent submissions
Now showing items 821-840 of 8174
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Similar solutions in nonequilibrium nozzle flows
The phenomena of thermal and/or chemical nonequilibrium in flowing gases at high temperatures is of fundamental importance in rocket nozzles as well as hypersonic flight simulation facilities. The present state-of-the-art ... -
Bursting phenomenon in turbulent flows
The importance of the phenomenon of bursts in turbulent shear layers has been recognised by fluid dynamicists during the past few years. Kline et al. (1967), Corino & Brodkey (1969), and more recently Grass (1971) noticed ... -
Lifted laminar diffusion flames-experiments and analysis.
Experiments on axisymmetric and two-dimensional lifted laminar diffusion flames have been conducted to obtain the height of lift as a function of flow parameters. The results are correlated on the basis of simple dimensional ... -
Role of subsurface flows in the ignition of liquid fuel pools-a theoretical study
The work is a theoretical study on the ignition of a pool of liquid fuel at subflash temperatures under the action of localized ignition sources. While a few experimental results are available in the literature, no theoretical ... -
Parametric analysis of fully developed turbulent Wall jets
From an examination of all available data on wall jets, it is concluded that at distances sufficiently far downstream from the slot, a fully developed state of the flow can be identified, where the details of the initial ... -
Modulation of Metal Fluxes and their Isotope Ratios in the Ganga (Hooghly) Estuary
This thesis aims at constraining the impact of estuarine processes on the net riverine fluxes of select metals and their isotopic composition to seawater. I studied the Ganga (Hooghly) River estuary, a monsoon-dominated ... -
Returnee Entrepreneurs and Tech Startups in India: A Study of the Determinants of their Innovation, Market Focus and Firm Performance
In recent years, the phenomenon of returnee entrepreneurship—where individuals educated and/or employed in developed economies return to their home countries to establish new ventures—has garnered substantial academic and ... -
Elucidating the TSC2-mediated transcriptional regulation of miR-514b-3p
The PI3K-AKT-MTOR signalling axis is pivotal in regulating cell survival, proliferation, and growth. Tuberous sclerosis complex (TSC) is a well-established negative regulator of this pathway, which primarily acts by ... -
Structure-Preserving Physics-Informed Neural Networks for Anisotropic Porous Media with Pressure Dependent Viscosity
Modeling flow through porous media with realistic physical constraints remains a longstanding challenge in subsurface engineering. Anisotropy in permeability, pressure-dependent viscosity, and non-negativity requirements ... -
Robust and Accurate Kinetic Schemes based on Flexible Velocities for Compressible Flows
Kinetic theory based schemes offer a unique approach to numerically solving the hyperbolic nonlinear Euler equations. These methods start with the Boltzmann equation as the governing equation at the kinetic level and then ... -
Influence of population bottlenecks on the evolution of sociality in synthetic life-cycle
Cooperation requires individuals to invest their resources for the benefit of others. Cooperative behaviours often involve the secretion of costly public goods, which can be exploited by spontaneous mutant cheater cells ... -
Investigations on Food Tourism in India
Tourism is vital to the Indian economy, contributing significantly to employment, foreign exchange earnings, and overall economic growth. India attracts millions of domestic and international travelers annually as one of ... -
Some dual realizations of Bergman and Hardy spaces on convex domains via integral transforms
The Fantappi{\`e} and Laplace transforms identify abstract spaces of analytic functionals with concrete function spaces, converting geometric support conditions into analytic growth conditions. Specifically, the space of ... -
Nucleophilic Boron Chemistry: Catalytic approaches to C-X (X= Br, Cl, O, N) Bond Activation in Metal/Metal-free Conditions
The boron-carbon bond occupies a central position in organic synthesis, functioning as a versatile “universal connector” to a broad range of functional groups. As a result, organoboranes have become indispensable synthetic ... -
Machine Learning Methods for Soil property prediction using VNIR and MIR Spectroscopy
Soil plays a key role in food security, freshwater regulation, biodiversity and climate mitigation. Soil intersects directly or indirectly with at least seven of the United Nations Sustainable Development Goals. Among the ... -
Enhancing Privacy and Efficiency of Distributed Encryption
The primary objective of a distributed system is to eliminate reliance on a central authority. In a distributed encryption scheme, users should be able to generate their key materials independently while securely sharing ... -
Tuning the Circuit, Steering the Swarm: CASY-1 in Synaptic and Behavioral Modulation
Disruptions in neuromodulatory signaling are a hallmark of several neurodevelopmental and psychiatric disorders. However, the molecular mechanisms that fine-tune neuromodulation across circuits and behaviors remain poorly ... -
Kobayashi geometry and a metric notion of negative curvature
In this thesis, we study some problems that represent various aspects of Kobayashi geometry. Our problems are, in some sense, motivated by a close examination---which forms a part of this thesis---of a property that may ... -
Structure and Polar Properties of SrTiO3-xNa0.5Bi0.5TiO3 Ferroelectric System
Ferroelectric materials exhibit interesting dielectric and piezoelectric properties. While for over six decades, lead-zirconate titanate (PZT) has been the most sought after piezoelectric material for actuator, transducer, ... -
Complexity and Randomness in the Dynamics of Quantum Systems
This thesis explores two complementary facets of quantum dynamics: the growth of operator complexity in open quantum systems and the certification of quantum randomness from temporal correlations in single-qubit dynamics. ...