etd AT Indian Institute of Science: Recent submissions
Now showing items 2441-2460 of 6965
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Algorithms for Stochastic Optimization, Statistical Estimation and Markov Decision Processes
Stochastic approximation deals with the problem of finding zeros of a function expressed as an expectation of a random variable. In this thesis we propose convergent algorithms for problems in optimization, statistical ... -
Mechanism of β-catenin regulation by IGFBP2: Role in Glioblastoma progression
Insulin-like growth factor binding proteins (IGFBPs) were initially identified as high affinity binders of Insulin-like growth factors (IGFs). There are six IGFBPs which regulate the bioavailability and functions of IGFs ... -
A Study on Counterproductive Work Behavior, Discrete Negative Emotions and Organisation Control Environment
Organisational scholars are increasingly focusing on employee behaviors, while traditionally, the emphasis was more on job performance as an only indicator of employee’s contribution to organisation goals. Employee ... -
Thermo-Mechanical Processing of Third Generation γ – Titanium Aluminides
The γ – TiAl based intermetallics are characterized by unique combination of the properties which make these materials amenable for the application in gas turbines. However, due to problems related to limited plasticity ... -
Thermal Turbomachinery Design for Closed Thermal Cycles and Multiple Fluids
Closed-cycle gas turbines can complement conventional power conversion systems due to their potential for improved efficiencies, compact system layouts, and the ability to exploit non-fossil fuel energy sources which leads ... -
Unified Control based Adaptable Converters with a Fractional Harmonic Inter Converter Signalling channel for Dynamic tracking of PCC and Managing Multiple Converters Connected in Parallel in a Microgid
The increasing demand of energy over the past few years as well as the growing environmental concerns have forced the mankind to look out for non conventional sources of energy such as solar, wind etc. Consequently a ... -
Embedding Networks: Node and Graph Level Representations
Graph neural networks gained significant attention for graph representation and classification in the machine learning community. For graph classification, different pooling techniques are introduced, but none of them has ... -
Thin Films of TiO2 by MOCVD : Precursor Development, Film Growth and Microstructure, Optical and Electrical Properties
TiO2 is a well-known and very attractive material owing to its chemical stability, biocompatibility, and remarkable electrical and optical properties. Indeed, it exhibits a high dielectric constant and resistivity, a high ... -
Kinetics of Photocatalytic Degradation of Dyes, Organics and Polymers using Nanomaterials
The main objective of this thesis was to investigate the application of photocatalysis for the degradation of organics, dyes, polymers, reduction of metal ions, decomposition of NO, etc. In this context, extensive work was ... -
Kernel-Based Image Filtering: Fast Algorithms and Applications
Image filtering is a fundamental preprocessing task in computer vision and image processing. Various linear and nonlinear filters are routinely used for enhancement, upsampling, sharpening, reconstruction, etc. The focus ... -
Spatial Analysis and Reconstruction of Reverberant Speech
Speech signal includes the spoken message and a lot more information such as speaker emotion, identity, language, speaking location characteristic etc., which makes the human interaction lively, desirable and more useful. ... -
On the development of low mass density gamma strengthened Co-based superalloys
The work herein aims at developing new class of low mass density gamma-strengthened Co-based superalloys with good solvus temperature through systematic addition of Cr into the Co-Ni-Al- Mo-Ta based superalloy. The present ... -
Devanagari Online Handwritten Character Recognition
In this thesis, a classifier based on local sub-unit level and global character level representations of a character, using stroke direction and order variations independent features, is developed for recognition of ... -
Dielectric, Mechanical, Magnetic and Electromagnetic Shielding properties of Carbon nanomaterial embedded Polydimethylsiloxane composites
Composites are the advanced engineering materials invented by men with exceptional properties over traditional materials. These attractive and delightful materials are the result of developments in the area of engineering ... -
Decision Making under Uncertainty : Reinforcement Learning Algorithms and Applications in Cloud Computing, Crowdsourcing and Predictive Analytics
In this thesis, we study both theoretical and practical aspects of decision making, with a focus on reinforcement learning based methods. Reinforcement learning (RL) is a form of semi-supervised learning in which the agent ... -
Experimental Studies in Quantum Optics using Diode Lasers
This thesis discusses experimental studies with vapor cells containing rubidium (Rb) or cesium (Cs) atoms. Transitions in the atoms (D1 and D2 lines) are accessed using diode lasers. Experiments are performed at room ... -
Molecular Characterization of Mannose Binding Lectins
Lectins are proteins of non-immunologic origin that bind to carbohydrates with high fidelity. They constitute a large class of multivalent recognition molecules that specifically interact with their cognate sugar moieties ... -
Co-operative Destabilization of a Flat Plate Boundary Layer by a Free Stream Convecting Vortex and Wall Suction/Blowing
The stability of wall bounded shear layer at subcritical Reynolds number disturbed by a freestream convecting vortex and unsteady suction/blowing at the wall was studied. A counterclockwise line vortex was convected parallel ... -
Statics of Shallow Bistable Arches
Bistable arches have two force-free stable equilibrium configurations. They also show multimodality by switching between their stable states in multiple deformation pathways. These two attributes and their nonlinear ... -
Structural Studies on Sesbania Mosaic Virus Protease Domain and Plasmodium Falciparum Hypoxanthine Quanine Phosphoribosyl Transferase and Triosephosphate Isomerase
X-ray crystallography is a powerful tool to obtain atomic resolution details on the three-dimensional structure of biological macromolecules. Crystallographic techniques find wide applications in understanding macromolecular ...