etd AT Indian Institute of Science: Recent submissions
Now showing items 1301-1320 of 9462
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Studies on graph grammars : comparison of various models and applications to graph theory
In this short chapter we shall raise a few questions whose answers could throw further light on the theory of graph grammars. When the notion of contextual condition was introduced by Rosenfeld, the grammars were constructed ... -
Small amplitude phenomena in conducting fluids and transport properties of plasmas
Abstract not available -
Nonlinear mode theory of shear flow development
The major part of this thesis is concerned with the description of a new technique for analysing the development of shear layers (particularly in free flows). A principal feature of this method is the expansion of the ... -
On the migration of maximum tropical rain fall zone in a simple climate model
The aim of this thesis is to understand the seasonal migration of the maximum precipitation zone in the tropics (ITCZ) using a simple climate model. An attempt is also made to extract at least phenomenological answers to ... -
Effect of convex transverse surface curvature on transition and other properties of incompressible boundary layer.
A study of the incompressible boundary layer with transverse surface curvature has been made with particular reference to transition from laminar to turbulent flow. Calculations based on linearised hydrodynamic stability ... -
On Policy Gradients, Momentum, and Learning with Adversaries: Algorithms and Convergence Analysis
This thesis comprises five works, organized into three parts: the first focuses on average-reward Reinforcement Learning (RL), the second on distributed learning under adversaries in heterogeneous and asynchronous setups, ... -
Unraveling the layers of DNA with the DNA-PAINT brush
DNA is both the repository of genetic information and a versatile nanoscale material whose stability and function are governed by base pairing and base-stacking interactions. Despite their fundamental role in DNA structure, ... -
Design, development, and clinical validation of KaraMetrics: A sensor-based hand function assessment tool for stroke rehabilitation
Stroke is a leading cause of adult disability worldwide, with persistent hand dysfunction severely limiting independence and quality of life for survivors. Existing clinical assessments of hand function such as the Fugl-Meyer ... -
Mechanobiology of Liver Fibrosis: Role of Hepatocytes in Fibrosis Progression
Liver fibrosis is characterized by liver scarring which disrupts the liver architecture and impairs hepatic function. Current diagnostic tools reveal that the stiffness of the liver tissue increases as one advances through ... -
On some structural problems in the theory of infinite-dimensional Lie (super)algebras
In this thesis, we examine two facets of infinite-dimensional Lie algebras. The first part focuses on the classification of $\pi$-systems in rank 2 Kac-Moody Lie algebras. In one of his seminal works, Dynkin classified the ... -
Studies on the roles of Lon protease and its substrates during antibiotic resistance in Escherichia coli: modulatory effects of nitroaromatics and nitrofurantoin
Bacteria adapt to environmental stresses, including antibiotic stress, by regulating various genes and metabolic pathways. In prokaryotes, the energy-dependent protein degradation is controlled primarily by two ... -
Core-Shell Precipitates in Ternary Alloys: A Phase-Field Study
Since the discovery of age hardening, a large number of alloys have been produced that exploit the presence of one or more precipitate phases in the microstructure for strength enhancement. In recent decades, alloys with ... -
Chemical Modulation of Ferroptosis in Mammalian Cells by Synthetic Organoselenium and Gold-based Small Molecules
Oxidative stress induced by reactive oxygen species (ROS) plays a crucial role in triggering various forms of cell death, including apoptosis, autophagy, and necrosis. In recent years, a distinct and regulated form of cell ... -
Patterns and drivers of elevational migration in Himalayan birds
Migration is a behavioural strategy that species use to deal with seasonal variation in climate and resources. A common form of migration is elevational migration, which is a short-distance movement undertaken by mountain ... -
Decoding determinants of selectivity in biomolecules
Molecular events demonstrate remarkable specificity amid complexity in its cellular environment. This phenomenon, termed biomolecular recognition, is fundamental to the organization and regulation of biological systems. ... -
Global response sensitivity and reliability analyses of structural dynamical systems with parameter and excitation uncertainties
This thesis develops computational methods for global response sensitivity analysis (GRSA) and time-variant reliability analysis in structural dynamical systems with parameter and excitation uncertainties. The primary ... -
Elastic Wave Dispersion Analysis and Mode Shape Investigation of Higher order Beam Theory for Thick Beams
The dynamic behavior of structural components, particularly thick beams, is critical in many engineering applications, including aerospace engineering, civil infrastructure, and mechanical systems. The rigid cross-section ... -
Autonomous Motion, Control Strategies & Sensing Applications Using Magnetic Micro-Robots
In recent years, there has been growing interest in manoeuvring nanoscale objects in fluidic environments, as it holds significant potential in targeted therapies, diagnostics, and probing local rheological properties. ...