etd AT Indian Institute of Science: Recent submissions
Now showing items 3261-3280 of 8216
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Soil microorganisms and biogeochemical cycles in a grazing ecosystem: interactions between producers, consumers, and decomposers
Microorganisms are the unseen majority that determines ecosystem processes, they perform biogeochemical functions that translate into essential services, and regulate global climate. In grazing ecosystems, which represent ... -
A study on Deep Learning Approaches, Architectures and Training Methods for Crowd Analysis
Analyzing large crowds quickly is one of the highly sought-after capabilities nowadays. Especially in terms of public security and planning, this assumes prime importance. But automated reasoning of crowd images or videos ... -
Multi-scale Modelling of Immune Response and Disease Spread: Methods and Applications
Diseases are multi-scale processes, with the precise combination of events at different scales both qualitatively and quantitatively dictating the final phenotype. Recognising that immune response is a key determinant of ... -
On a Few Non-Classical Perspectives in Solid Mechanics
Postulates in solid mechanics can be broadly classified into three groups describing the geometry of a configuration, mechanical equilibrium and thermodynamics of the deformation process. The geometry defined on a configuration ... -
A Study of Dissipative Phenomena in Semiconductor Nanocrystals
Quantum dots (QDs) are semiconductor nanoparticles, where carriers are confined in regions smaller than a few tens of nanometers. The physics governing the behavior of these nano structures are fundamentally different from ... -
Sulfoximine and Sulfoxonium Ylide Directed C-H Activation and Domino Cyclization: Construction of Heterocyclic and Carbocyclic Rings
The thesis presents the construction of heterocyclic and carbocyclic rings using rhodium-catalyzed C-H bond activation followed by a tandem cyclization strategy. This involves the synthesis of heterocyclic compounds such ... -
Role of Physico-chemical Processes And Micro-structural Features in Influencing Moisture Loss and Engineering Properties Of Compacted Residual Soils Exposed To Environmental Relative Humidity
The moisture content of residual soils above the water table, and near ground surface (≤ 6 m) is influenced by the environmental relative humidity (RH). The focus of this thesis is to examine the physico-chemical and ... -
Computational Study of General Relationships in Chemistry: C−C, C−N, and B−B Coupling, B−B Catenation, and 2D Metal Borides
Elements in the periodic table are categorized into four major blocks, main group (MG) elements, transition metals (TM), lanthanides (Ln), and actinides (An), which differ dramatically. Recent studies revealed some interesting ... -
Biogeography and comparative phylogeography of freshwater snails of India
Distribution of flora and fauna is shaped by both current and historical processes. In my thesis I concentrated on how the historical component of the governing processes have dictated the current distribution of biota. ... -
Design of soluble and particulate immunogens derived from the stem of Influenza hemagglutinin
Influenza is a highly contagious virus, belonging to the family Orthomyxoviridae that causes acute febrile respiratory illness which can be fatal in some cases. The highest risk groups for influenza viral infection ... -
Deciphering the evolutionary significance of maintaining cryptic genetic systems by bacteria
Cryptic genes are phenotypically silent DNA sequences with the potential to code for a function, but remain inactive during the normal life span of the organism. However they can be activated by a single mutational event ... -
Use of sub-family specific residues of protein modules in recognizing sites of functional and structural specialization
Functional and regulatory features of a protein in a living system are determined by several factors such as chemical nature and three-dimensional arrangement of residues in the functional site, spatial and temporal ... -
Signcryption in a Quantum World
With recent advancements and research on quantum computers, it is conjectured that in the foreseeable future, sufficiently large quantum computers will be built to break essentially all public key cryptosystems currently ... -
Algorithms for Processing RGBD Images and Videos for Depth-Based 3D Video Systems
In recent times, immersive visual media such as Virtual Reality (VR), Augmented Reality (AR), 3DTV and Free Viewpoint Television (FTV) have garnered tremendous interest. Immersive visual media content typically provides ... -
Role of in-phase octahedral tilt influencing structure and properties in Na0.5Bi0.5TiO3 - based piezoceramics
High performance perovskite (ABO3) based piezoceramics are used as actuators, pressure sensors, and transducers in wide-ranging applications spanning sectors like health, space, defence and automobiles. For over four ... -
Molecular basis of attenuation of the live attenuated Japanese encephalitis virus vaccine SA14-14-2
Japanese encephalitis virus is a member of Flaviviridae family. Flaviviridae family has four genera which comprises of Flavivirus, Pestivirus, Hepacivirus and Pegivirus. The global burden of disease caused by these viruses ... -
Flow and structure of dense granular materials
Granular materials are frequently encountered in our daily lives and are widely processed forms of matter in various industries. Despite decades of research, the mechanical behavior of granular materials is not well ... -
A place for everything and everything in its place: Spatial organization of wasps on the nests of the primitively eusocial paper wasp Ropalidia marginata
In my thesis, I found that queens and workers in the primitively eusocial paper wasp Ropalidia marginata use space on their nests non-randomly with a majority of individuals showing spatial fidelity to small core areas, ... -
Micromechanical modeling of fracture and fatigue behavior of cementitious composites
The ubiquitous use of concrete as a construction material in the civil engineering industry demands a thorough understanding of its failure process under different types of loading. The composite nature of cementitious ... -
Integration of sequences, structures, dynamics to study functional divergence in homologous proteins and their assemblies
Functions of proteins are governed by their sequences, structures, dynamics and assembly. Modulation of these factors during evolution renders functional divergence in related proteins that have originated from the common ...