etd AT Indian Institute of Science: Recent submissions
Now showing items 2601-2620 of 6965
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3D Dosimetry using optical tomography and electronic portal images
The primary goal of this thesis is to develop techniques to quantify the radiation dose distributions used in radiotherapy for cancer treatment. It aims at developing a physically profound calculation model for the transit ... -
Interaction behavior and droplet characteristics of multi-injector sprays
The injector faceplate of a liquid propellant rocket engine is comprised of numerous single-element atomizers to inject propellants into the engine thrust chamber. The sprays from these single-element atomizers interact ... -
Speech task-specific representation learning using acoustic-articulatory data
Human speech production involves modulation of the air stream by the vocal tract shape determined by the articulatory configuration. Articulatory gestures are often used to represent the speech units. It has been shown ... -
Speech and noise analysis using sparse representation and acoustic-phonetics knowledge
This thesis addresses different aspects of machine listening using two different approaches, namely (1) A supervised and adaptive sparse representation based approach for identifying the type of background noise and the ... -
Lattice Boltzmann Relaxation Schemes for High Speed Flows
The lattice Boltzmann method (LBM) has emerged as a highly efficient model for the simulation of incompressible flows in the last few decades. Its extension to compressible flows is hindered by the fact that the ... -
Transport, Relaxation and Line shape in Quantum Dissipative Systems with Applications to Photosynthesis and Conjugated Polymers
The thesis entitled as “Transport, Relaxation and Line shape in Quantum Dissipative Systems with Applications to Photosynthesis and Conjugated Polymers” has been divided into five major parts and ten chapters. In Part ... -
Analysis of the Flow of Granular Materials through a Screw Conveyor
Screw conveyors are widely employed in industry for the bulk transport of particulate materials. Several studies have attempted to correlate the discharge rate with the rotation speed of the screw via experiments and ... -
Computational Studies of Hydrophobic Force Law, Dynamics in Model Asymmetric Binary Mixtures, and Contribution to One and Two Dimensional Infrared Spectroscopy
Depending on the system and phenomena of interest, the thesis has been partitioned into three major parts. The first part is on the theoretical infrared spectroscopic studies and vibrational phase relaxation of supercritical ... -
Transboundary externalities and the river sharing problem
Population increase and economic growth have caused competing demands to occur over transboundary water resources. The property rights on such water resources are not well defined, and therefore competing demands give rise ... -
Fast total variation minimizing image restoration under mixed Poisson-Gaussian noise
Image acquisition in many biomedical imaging modalities is corrupted by Poisson noise followed by additive Gaussian noise. Maximum Likelihood Estimation (MLE) based restoration methods that use the exact Likelihood ... -
Non-Equilibrium Phenomena in Sheared Soft Matter and Active Granular System
In this thesis, we have studied non-equilibrium phenomena in sheared soft matter systems and in granular active matter. The surfactant systems are driven out of thermal equilibrium by applying external forcing at the ... -
Microstructure and mechanical properties of a 3D printed titanium alloy
The selective laser melting (SLM) process is increasingly being adopted for the manufacturing of metal parts as it provides better design flexibility and has the capability to produce near net shape complex parts, which ... -
Modulation of Power Electronic Converter Fed Split-phase Induction Machine Drive
Induction machine (IM) is the workhorse of several industries due to its low cost and minimal maintenance. Power electronic converters play a major role in driving IMs which give better flexibility in these applications. ... -
Transport in Interfacial Systems: Biosensor, Polymer, Colloid & Bacteria
Life forms as we know emerged due to unique mechanical and transport properties exhibited by Soft Materials at interface. For instance, the interior of a cell is separated from outside environment by lipid bilayer which ... -
Novel Micro fluidic Techniques for Point-of-Care Diagnostics
Point-of-care Diagnostics (POCD) is one of the rapidly growing areas of health-care sector that avails to the needs of the patient at the point-of-care. An ideal POCD device is required to be compact, portable, offer ... -
First principles study of the structural, electronic, elastic, mechanical, thermal, and vibrational properties in pyrochlores and temperature-dependent phonon properties in pyrochlores and SrTiO3 perovskite
In this thesis, first-principles density functional theory (DFT) calculations are used to study the structural, electronic, elastic, mechanical, and thermal properties in a series of pyrochlore materials. The vibrational ... -
Probabilistic Analysis of Radionuclide Transport for Radioactive Waste Disposal Systems in Soil and Fractured Rocks
The safe management of radioactive waste disposal facilities is increasingly becoming a necessary condition for the future development of nuclear industry. To ensure long-term safety of these disposal facilities, performance ... -
Macroscopic modelling of heterogeneous, disordered road traffic flow
The groundwork for much of the existing traffic flow theory was laid in the 1950s and 1960s by researchers from developed economies like the United States. The car-following modelling approach, which is arguably the most ... -
Cryogenic Instrumentation using Planar Inductor based Eddy Current Sensors
Cryogenic sensors have become vital in the measurement of crucial parameters in modern scientific research. This work addresses the design, development and testing of planar inductor eddy current sensors and associated ...