etd AT Indian Institute of Science: Recent submissions
Now showing items 181-200 of 7843
-
Asymmetric Catalysis: From Atroposelective Organocatalysis to Iridium-Catalyzed Generation of Central Chirality
Thesis Abstract: This thesis, entitled as “Asymmetric Catalysis: From Atroposelective Organocatalysis to Iridium-Catalyzed Generation of Central Chirality” is divided into three chapters. Chapter 1, highlights the ... -
Interplay of Performance and Robustness in Architected and Naturally Evolved Structures
Humans have long drawn inspiration from nature, drawing on its intricate and efficient designs for solving complex engineering challenges. One such feature is the aperiodicity observed in biological systems, which exhibit ... -
Experimental investigations into tensile properties of large specimens and sensitivity of notch size on the fracture and fatigue behavior of concrete
Concrete, which is the second largest material used after water, is a highly heterogeneous quasi-brittle material containing ingredients at different length scales. The fracture and fatigue behavior of this material is ... -
Control and Co-ordination in Multi-Joint Movements
Our interactions with the world often entail a wide range of multi-jointed movements. We are bestowed with an abundant degree of freedom, that a movement can be achieved by recruiting multiple joints, muscles, and neural ... -
Space- Time block codes with low maximum likelihood decoding complexity and large coding gain
Space-time block coding has been an extensively researched technique to combat multipath fading in multiple-input, multiple-output (MIMO) systems when the channel-state information is available at the receiver but not at ... -
Theoretical study of surface wave characteristics of a circular cyclindrical conductor coated with 2 graded dielectric layers embeoded in isotropic & anisotropic media
The study investigates a cylindrical conductor coated with two dielectric layers, both having radially varying dielectric constants, and the external medium being lossless, either: (a) Isotropic, or (b) Anisotropic The ... -
Non linear vibrations of stretched strings
The viscosity of pure Freon-12 and Freon-22 vapours and their mixtures has been determined by an oscillating disc viscometer at room temperature and pressure. The results agree well with the published data for the pure ... -
Propagation of a curved weak shock front
Waves are ubiquitous in the physical world. The study of general laws that govern their propagation is, therefore, important. In particular, nonlinear hyperbolic waves are frequently encountered, for some of which the ... -
On hardy-sobolev inequality and its application to certain singular problems
Inequalities involving integrals of a function and its derivatives appear frequently in various branches of mathematics and represent a useful tool, e.g., in the theory and practice of differential equations, in the theory ... -
Phase transition at critically, poisson convergence of isolated vertices and connectivity in random connection models
This work has two parts. The first part contains the study of phase transition and percolation at criticality for three random graph models on the plane, viz., the homogeneous and inhomogeneous enhanced random connection ... -
Analytical and numerical solutions of some moving boundary problems. vol. 2
This thesis presents analytical and numerical solutions of some Moving Boundary Problems (MBP’s), especially those pertaining to solidification/melting. Since solidification problems are mathematically analogous to melting ... -
Analytical and numerical solutions of some moving boundary problems. vol.1
Title of the Thesis: Analytical and Numerical Solutions of Some Moving Boundary Problems This thesis presents analytical and numerical solutions of some Moving Boundary Problems (MBP’s), especially those pertaining to ... -
Strain controlled low cycle fatigue and creep-fatigue interaction behaviour of a type 316L(N) stainless steel
Type 316L(N) stainless steel (SS) is the currently favored structural material for several high-temperature components in the primary side of the liquid metal-cooled fast breeder reactor. The choice of this material is ... -
Measurements of the ionsation current Growth and the ratio of Diffusion coefficient to mobility for electronics in feebly Attaching gases
For a proper understanding of the mechanism of breakdown in gases, it is essential to have knowledge of the swarm coefficients, namely, the sparking potentials (V?), Townsend's primary (?/N) and secondary (?) ionization ... -
On calculation of corona and breakdown voltages of gaseous insulation with special reference to elecrro-negetive gases and their mixtures
In the design of any insulation system, mechanical, electrical, thermal, and economic considerations are generally of prime importance, and many factors contribute to the type of insulation used in a particular system. In ... -
Gaseous breakdown below paschen minimum in ExB fields
Some investigations about the electric discharge in a coaxial geometry electrode are explained in the transition range, namely, Townsend–Penning discharge for the dry air. The existing theory of 0.05 to 0.3 Torr is extended ... -
Rise and delay time of a vaccum gap triggerd by an exploding wire
Detailed investigations on the rise time (t?) and delay time of a vacuum gap employing an entirely new type of trigger mode using an exploding wire have been reported in this thesis for the first time. A large quantity of ... -
Concurrency control algorithms for database systems exploiting the semantics of read-only transactions.
This thesis proposes new locking-based concurrency control algorithms for both centralized and distributed databases. The concurrency control algorithms proposed exploit the semantics of read-only transactions to improve ... -
Pattern recognition via Fuzzy set methods
The main objective of this thesis is the development of a methodology based on fuzzy set theory for several practical pattern recognition problems. Pattern recognition (PR) encompasses a range of problems from feature ... -
Modelling program dynamics : A study on locality of reference
Locality of reference is a phenomenon exhibited by programs and computer systems in general, and refers to the tendency to localize operations to a small subset of the available resources. In the past, this phenomenon has ...