etd AT Indian Institute of Science: Recent submissions
Now showing items 661-680 of 6749
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Dynamical systems biology approach to identify mediators of the Epithelial-Hybrid-Mesenchymal spectrum
Cancer metastasis – the spread of cancer cells from one organ to another – remains the major cause of cancer-related deaths. A hallmark of metastasizing cells is their ability to adapt quickly and reversibly to their dynamic ... -
Effect of High Pressure Torsion Processing on Precipitate Containing Alloys
Severe plastic deformation (SPD) processes yield excellent grain refinement in metallic materials by application of very large shear strains while retaining the initial sample dimensions. Its effects on simultaneously ... -
Design Principles of Phenotypic Robustness and Plasticity in Gene Regulatory Networks underlying Cancer Metastasis
Metastasis – the process of cancer cells leaving the primary tumor and colonizing multiple organs – remains a major cause of cancer mortality. However, it is a highly inefficient process with only 0.01% of disseminated ... -
Growth of hole-conducting Cu2O & CuO semiconductors using CVD for next-generation electronic devices: Thin Films Transistors, Memristors, and Gas Sensors
Semiconducting oxides with visible-range transparency and high electrical conductivity have tremendous potential for transparent CMOS devices. Oxide semiconducting materials are a good choice for emerging transparent ... -
Chemistry of bimetallic, chalcogenide and highly reactive metal nanoparticles
The remarkable modifications in the characteristics of materials on a nanoscale, caused by surface effects, quantum confinement, and dependence on shape, leads to diverse applications of nanomaterials, such as in catalysis, ... -
Algorithms for Geometric Packing and Covering Problems
We study two fundamental problems related to geometric packing and covering, and design algorithms with improved worst-case performance guarantees for them. These problems have numerous applications in resource allocation, ... -
Structural and Electrochemical Investigations of Monovalent and Divalent Aqueous Rechargeable Batteries
Several stringent laws and regulations have been enforced by various National/International agencies for the adoption of sustainable methods for energy production and usage. In recent times, electric grids based on alternative ... -
Global gyrokinetic simulations of electrostatic microturbulent transport in LHD stellarator and ADITYA-U tokamak
Tokamak and stellarator are two leading contenders in the quest to achieve nuclear fusion from magnetically-confined plasmas. They differ in terms of magnetic field structure in the toroidal direction. Irrespective of the ... -
Quantum oscillation in band insulators and properties of non-equilibrium steady states in disordered insulators
Starting with the experiment on Kondo insulator SmB6 , which shows 1/B-periodic oscillations despite the absence of gapless electronic excitations in bulk, the candidate insulators showing quantum oscillation (QO) are on ... -
Solving The Unsolved In Multicomponent Diffusion: The Concept Of Constrained Diffusion Couple Methods
Quantitative diffusion analysis in multicomponent metallic systems has been a formidable task historically and despite decades of research, most of the diffusivity estimations were limited to interdiffusion and some intrinsic ... -
New tools to constrain EFTs and CFTs
In this thesis, we develop new methods for the S matrix bootstrap in the context of 2-2 scattering amplitudes and four-point correlators in conformal field theories (CFTs). For 2-2 scattering in quantum field theories, ... -
Active matter: chirality, translational order, and interfaces
My PhD work is on chiral active matter with solid and fluid directions, dynamics of the interface of a nonconserved chiral order parameter in an active system, flocking on curved manifolds and field-driven colloids in ... -
2D Piezotronics: Performance to Functionality
In the pursuit of interactive electronic devices, there is a need for smart materials which can serve multiple functionalities. 2D (two-dimensional) layered materials have gained attention in semiconductor technology because ... -
Constraining the Lithium Seawater Mass and Isotope Budget: Diagenetic Processes Through Marine Pore Waters
Silicate weathering consumes CO2 and controls cation fluxes to the ocean, thus playing a critical role in modulating long-term seawater chemistry and climate. There are very few markers of seawater chemistry whose value ... -
Investigating the role of miR-198 in oral squamous cell carcinoma pathogenesis
Evidence supports the critical role of microRNA (miRNA) dysregulation in several diseases including cancers. The aberrant expression of numerous tumor suppressor and oncogenic miRNAs is a well-established driving factor ... -
Development of Spatio-Temporal Multi-Task Assignment Approaches for Perimeter Defense Problem
Rapidly evolving technologies in the autonomous operation of Uninhabited Aerial Vehicles (UAVs) and associated developments in low-cost sensors have created significant interest among researchers in using them for various ... -
Automatic speech recognition for low-resource Indian languages
Building good models for automatic speech recognition (ASR) requires large amounts of annotated speech data. Recent advancements in end-to-end speech recognition have aggravated the need for data. However, most Indian ... -
Opacity and its Trade-offs with Security in Linear Dynamical Systems
Opacity is notion of privacy that is well-studied in computer science and discrete-event systems. In our work, we extend the opacity notion to linear dynamical systems. Opacity describes an eavesdropper’s inability to ... -
Efficient Constructions of Streaming Codes
Streaming codes are a class of erasure codes that operate on a stream of packets and enable recovery of dropped or erased packets under a decoding-delay constraint. The primary focus of this thesis is on providing constructions ... -
Coding Schemes for Secure and Reliable DNA-Based Data Storage
In DNA-based data storage, the desired information is encoded into the quaternary sequence of synthetic DNA molecules, called oligos. We look at secure communication via information-containing oligos in the usual three-party ...