Research on the Indian Capital Market: A Review

In this paper we present a review of research done in the field of Indian capital markets during the fifteen years from 1977 to 1992. The research works included in the survey were identified by two search procedures. Firstly, we wrote to 118 Indian university departments and research institutions requesting information on the works done in this field in their department/institution. After three reminders, we obtained responses from 53 institutions. Simultaneously, we searched through various Indian journals in our library, located books listed in the library catalogue and traced through the list of references provided in various research works. Considering the size, vintage and development of the Indian capital market, the total volume of research on it appears to be woefully modest - about 0.1 unit of work per institution per year! Moreover, a large number of works are merely descriptive or prescriptive without rigorous analysis. Certain areas such as arbitrage pricing theory, option pricing theory, agency theory, and signalling theory are virtually unresearched in the Indian context. Besides, very little theoretical work has been done by researchers in India. However, with improved availability of databases and computing resources, and with increasing global interest in Indian markets, we expect an explosion of work in the near future.

Growth Stress Induced Tunability of Dielectric Constant in Thin Films

It is demonstrated here that growth stress has a substantial effect on the dielectric constant of zirconia thin films. The correct combination of parameters - phase, texture and stress - is shown to yield films with high dielectric constant and best reported equivalent oxide thickness of 0.8 nm. The stress effect on dielectric constant is twofold, firstly, by the effect on phase transitions and secondly by the effect on interatomic distances. We discuss and explain the physical mechanisms involved in the interplay between the stress, phase changes and the dielectric constant in detail.Comment: 11 pages, 5 figure

Effects of Radiation Absorption and Mass Transfer on the Free Convective Flow Passed a Vertical Flat Plate through a Porous Medium in an Aligned Magnetic Field

This article analyses the effects of radiation absorption and mass transfer on the steady free convective flow of a viscous, incompressible and electrically conducting fluid past an infinite vertical flat plate through a porous medium with an aligned magnetic field. Analytical solutions for concentration, temperature, and velocity are obtained by solving the governing equations in two cases namely (i) when the plate is at uniform temperature and concentration and (ii) when the plate is at constant heat and mass flux. Further the rate of mass transfer in terms of the Sherwood number, rate of heat transfer in terms of Nusselt number and skin friction in terms of shear stress are also derived. The effects of various flow parameters on concentration, temperature, velocity, Sherwood number, Nusselt number and skin-friction affecting the flow field are discussed and analyzed

Temporal and Spatial variations in Hydrographic Conditions of Mandovi Estuary

11-17Variations in temperature, salinity, suspended matter and currents at mouth, middle and upstream regions of Mandovi Estuary were studied in relation to tides for 3 seasons, viz. premonsoon, monsoon and postmonsoon. Waters attained maximum temperature of 31.5°C during premonsoon and minimum of 25.5°C during postmonsoon. Maximum salinity variation over a tidal cycle was in the middle region of the estuary during monsoon (2 to 34%) and minimum was at the mouth during premonsoon (34 to 36%). Horizontal gradient in salinity was maximum (2.0%/km) during monsoon and minimum (about 0.2%/km) during premonsoon. The estuary changed from a stratified type during the wettest season (monsoon) to a well-mixed type in premonsoon. The sediment load was generally low (<25 mg/litre) in the waters of the upstream region during postmonsoon. Higher values of suspended load were generally associated with strong currents. At the mid region of the estuary strong currents of about 150 cm/sec were encountered with flood during premonsoon and with ebb during monsoon

Variations in Physical Characteristics of the Waters of Zuari Estuary

5-10Based on data collected over tidal cycles at 3 selected stations in Zuari Estuary, Goa, India, seasonal changes and temporal variations in hydrographic conditions were studied in relation to tidal currents. In general, temporal variations in different hydrographic parameters were minimum during summer and maximum during monsoon. Water temperature, in general, attained higher values ( >30° C) in summer and monsoon and lower values ( <27°C) in winter. Maximum range of salinity over a tidal cycle (about 16 % was observed during monsoon in middle and upstream regions of the estuary, the minimum range being in the mouth during summer (34.8 to 35.2%). Salinity structure indicated the transformation of the estuary from a mixed one during summer to a stratified one during monsoon. Compared to that at the suspended sediment load was generally high in middle and upstream regions of the estuary, where the maximum values encountered were of the order of 200 mg/litre in the monsoon. Tidal currents were, in general, stronger in middle and upstream regions than at the mouth. During monsoon, the pre-dominance of ebb flow bearing high sediment load, the probable flocculation due to large salinity variation in the downstream part and the reduction of current speed due to widening of the estuary appear to contribute to higher rate of siltation in the harbour area

Heavy-Fermions in a Transition-Metal Compound: LiV2O4LiV_2O_4

The recent discovery of heavy-Fermion properties in Lithium Vanadate and the enormous difference in its properties from the properties of Lithium Titanate as well as of the manganite compounds raise some puzzling questions about strongly correlated Fermions. These are disscussed as well as a solution to the puzzles provided.Comment: late

Chemical Reaction and Hall Effects on MHD Convective Flow along an Infinite Vertical Porous Plate with Variable Suction and Heat Absorption

In this paper an attempt is made to study the chemical reaction and combined buoyancy effects of thermal and mass diffusion on MHD convective flow along an infinite vertical porous plate in the presence of Hall current with variable suction and heat generation. A uniform magnetic field is applied in a direction normal to the porous plate. The equations governing the fluid flow are solved using the perturbation technique and the expressions for the velocity, the temperature and the concentration distributions have been obtained. Dimensionless velocity, temperature and concentration profiles are displayed graphically for different values of the parameters entering into the problem like Prandtl number Pr, Hartmann number M, Grashof number G, modified Grashof number Gc, Hall parameter m, Heat source parameter δ, Schmidt number Sc, and Chemical reaction parameter Kr. The Skin-friction coefficient, rate of heat transfer and mass transfer at the plate have been obtained and also discussed through tables. It has been observed that an increase in the Prandtl number leads to a decrease in the primary and secondary velocities, and also a decrease in the primary and secondary temperatures. The primary and secondary velocities decrease with increase in the Chemical reaction parameter or Magnetic field parameter

Light Scattering from Nonequilibrium Concentration Fluctuations in a Polymer solution

We have performed light-scattering measurements in dilute and semidilute polymer solutions of polystyrene in toluene when subjected to stationary temperature gradients. Five solutions with concentrations below and one solution with a concentration above the overlap concentration were investigated. The experiments confirm the presence of long-range nonequilibrium concentration fluctuations which are proportional to $(\nabla T)^2/k^4$, where $\nabla T$ is the applied temperature gradient and $k$ is the wave number of the fluctuations. In addition, we demonstrate that the strength of the nonequilibrium concentration fluctuations, observed in the dilute and semidilute solution regime, agrees with theoretical values calculated from fluctuating hydrodynamics. Further theoretical and experimental work will be needed to understand nonequilibrium fluctuations in polymer solutions at higher concentrations.Comment: revtex, 16 pages, 7 figures. J. Chem. Phys., to appea