etd AT Indian Institute of Science: Recent submissions
Now showing items 3341-3360 of 8218
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Tuning Andreev reflection at Graphene - superconductor junction: from zero field to quantum Hall regime
Andreev reflection (AR) is the underlying phenomena that determines the quasiparticle dynamics at the junction of a superconductor with any non-superconducting material, which in turn determines the transport properties ... -
Multiband Modelling and Radio Observations of Gamma Ray Burst Afterglows
The widely popular and successful standard fireball model for Gamma Ray Burst (GRB) afterglows is based on ultra-relativistic external shocks sweeping up matter around the explosion site to accelerate electrons up to GOV ... -
Cerium Oxide Based Active Catalyst for Green Hydroxylammonium Nitrate (HAN) Fueled Monopropellant Thruster
Monopropellants are widely used for propulsion and gas generation applications. The current state of art monopropellant systems are based on hydrazine propellants. While hydrazine has a strong heritage as a versatile ... -
Porous Polymeric Membranes with Engineered Surfaces for Water Remediation
Access to safe drinking water is one of the greatest challenges that have afflicted people across the globe. Approximately 1.2 billion people do not have access to safe drinking water while 2.6 billion have no access to ... -
Architectures for enhancing bandwidth and power scalability of optical frequency combs
Optical frequency combs (OFCs) have revolutionized high bandwidth communications, spectroscopy, arbitrary RF waveform generation, LIDAR (Light Detection and Ranging), and astronomical spectrograph calibration. OFCs have ... -
Microbially-induced Mineral Flocculation and Flotation with Proteins and Polysaccharides Isolated from Paenibacillus
The most significant environmental issue that has arisen in the mining industries over the last decade is that of acid mine drainage (AMD) from tailing dumps and waste mined rock piles. AMD is caused by the oxidation of ... -
Role of Glycosylation and Oligomerization on the Stability of Soybean Agglutinin
Carbohydrates are vital to life. In their naive form, they serve as a primary energy source for supporting life. However, in most cases carbohydrates do not exist as simple sugars in nature. Instead they occur as more ... -
Effect of urbanisation & population density on groundwater in India using satellite remote sensing data
This work investigates the relationship of urbanization, population density and meteorological variables (temperature & precipitation) on groundwater storage for the selected study regions in India. Variations in ... -
Structural acoustics of perforated panels
In this work, radiation and transmission of sound through flexible perforated panels set in infinite rigid baffles are investigated. The treatment is largely analytical using Fourier transforms and contour integrations. ... -
Conceptualisation, Development and Validation of Energy Internet for a Transitioning Electricity System
Globally, the national electricity systems are in the midst of aggressive transitions. A shift from large-scale conventional fossil-fuel based power generation systems to large number of small-scale distributed renewable ... -
Dynamics of Laminar Separation Bubbles on Low Reynolds Number Airfoils
This is a detailed study on the aerodynamics of low Reynolds number airfoils. E387 airfoil that comes under the category of trailing-edge stall is used extensively in this study. The reduction in lift due to low Reynolds ... -
Content-Based Texture Analysis and Synthesis for Low Bit-Rate Video Coding Using Perceptual Models
Determining perceptually irrelevant and redundant information from human point of view is one of the fundamental problems today that is limiting the performance of current video compression algorithms. The performance of ... -
Post-transcriptional regulation of the tumor suppressor gene TSC1 and its relevance in Oral Squamous Cell Carcinoma
Oral cancer or oral squamous cell carcinoma (OSCC) is a subset of head and neck cancer (excluding non-melanoma skin cancer), with an estimated 354,864 new cases and 177,384 deaths reported annually. India accounts for 34% ... -
Aspects of Heavy Supersymmetry
The recent discovery of a Higgs boson with a mass around 125 GeV, taken together with experimental results from flavor factories, dark matter direct detection, and searches for SUSY particles in the LHC suggest that ... -
A Study of Synthesis and Optoelectronics of Copper Iron Chalcogenide Nanocrystals
Copper iron chalcogenides constitute a promising class of optoelectronic materials courtesy of their narrow bandgaps and earth abundant constitution. However, they are yet to receive the attention they deserve due to the ... -
Algorithms for Challenges to Practical Reinforcement Learning
Reinforcement learning (RL) in real world applications faces major hurdles - the foremost being safety of the physical system controlled by the learning agent and the varying environment conditions in which the autonomous ... -
Generalized local projection stabilized finite element methods for boundary value problems
The primary goal of this thesis work is to study a priori analysis based on the generalized local projection stabilized (GLPS) finite element methods for the system of linear partial differential equations of first and ... -
Parallel Computing Techniques for High Speed Power System Solutions
Modern power systems are enormously large and complex entities. Planning, maintaining and operating such a system would be cumbersome if it were not for the wide assortment of analytical methods available to assist the ... -
Studies on Rotavirus Nonstructural Protein 5 (NSP5)
Rotavirus is the most important agent of viral gastroenteritis in humans and animals and is responsible for about 600,000 deaths per annum. Most of these deaths occur in the developing countries and India is estimated to ... -
Extremes of Indian Summer Monsoon Rainfall and Equatorial Indian Ocean Oscillation
Our studies suggest that the equatorial Indian Ocean Oscillation, which is the atmospheric component of Indian Ocean Dipole, is as important as El Nino and Southern Oscillation for the interannual variation of Indian Summer ...