33 research outputs found
Preparation and Characterization of Modified Bitumen using Waste Plastics, Recycled Eva and Nano Fly Ash
A study of the Role of SEBI in regulating the Indian Securities Market
Abstract: The structure and processes of the SEBI have been developed over the year. In 1602 when Amsterdam stock exchange was admitted by the East India Company for dealings in its own securities the establishment of the native share and stock Brokers Association (now renamed as Bombay Stock Exchange) in 1875 in the existing India undoubtedly marked a beginning of the stock exchange in India despite being the first ever stock exchange in Asia. The earliest legislative efforts to regulate the securities market in India was made by the Bombay Securities Contracts control act 1925, which was enacted to regulate and control certain contracts acts for purchase and sale of securities in the city of Bombay.
Keywords: Security, India, Regulation, SEBI.
Title: A study of the Role of SEBI in regulating the Indian Securities Market
Author: Moumita Banerjee
International Journal of Management and Commerce Innovations
ISSN 2348-7585 (Online)
Vol. 10, Issue 2, October 2022 - March 2023
Page No: 447-450
Research Publish Journals
Website: www.researchpublish.com
Published Date: 18-March-2023
DOI: https://doi.org/10.5281/zenodo.7747932
Paper Download Link (Source)
https://www.researchpublish.com/papers/a-study-of-the-role-of-sebi-in-regulating-the-indian-securities-marketInternational Journal of Management and Commerce Innovations, ISSN 2348-7585 (Online), Research Publish Journals, Website: www.researchpublish.co
Competitive metastable behaviours of surface and bulk in Ising ferromagnet
The reversal of magnetisation has been studied in a three-dimensional Ising ferromagnet by Monte Carlo simulation with Metropolis single spin flip algorithm using random updating scheme. The outer layers are considered as surface. The surface interacts with core with a relative ferromagnetic interaction strength. Depending on the relative interaction strength, the time of reversal of the surface was found to be different from that of the bulk. For weaker relative strength, surface reversal was found to be faster than that of bulk and vice versa for stronger relative interaction strength. A critical value () of relative interaction strength provides same time of reversal of surface and bulk. This critical relative interaction strength was found to be a function of the temperature (T) and applied magnetic field (h). The scaling relation , where and , has been proposed, numerically by the method of data collapse. The metastable volume fractions, for both surface and bulk, were found to follow the Avrami’s law. The critical relative interaction strength () has been observed to decrease in an exponential ( fashion with the system size (L)
Intrinsically Heat Tolerant, UV Resistant EVA/ LDPE thermoplastic elastomeric encapsulant – An alternative for conventional crystalline silicon PV module encapsulant
Anisotropy-driven reversal of magnetisation in Blume–Capel ferromagnet: a Monte Carlo study
The two-dimensional Spin-1 Blume–Capel ferromagnet is studied by Monte Carlo simulation with Metropolis algorithm. Starting from initial ordered spin configuration, the reversal of magnetisation is investigated in the presence of a magnetic field (h) applied in the opposite direction. The variations of the reversal time with the strength of single-site anisotropy are investigated in details. The exponential dependence was observed. The systematic variations of the mean reversal time with positive and negative anisotropy were found. The mean macroscopic reversal time was observed to be linearly dependent on a suitably defined microscopic reversal time. The saturated magnetisation after the reversal was noticed to be dependent of the strength of anisotropy D. An interesting scaling relation was obtained, with the scaling function of the form . The temporal evolution of density of (surrounded by all ) is observed to be exponentially decaying. The growth of mean density of has been fitted in a function . The characteristic time shows and a crossover in the rate of exponential falling is observed at . The metastable volume fraction has been found to obey the Avrami’s law
Theoretical studies on switching of magnetisation in thin film
In the present chapter, we focus on the switching of magnetisation, or the
metastable lifetime of a ferromagnetic system. In this regard, particularly the
Ising model and the Blume-Capel model, have been simulated in the presence of
an externally applied magnetic field by the Monte-Carlo simulation technique
based on the Metropolis algorithm. Magnetisation switching is found to be
faster in the presence of disorder, modelled here by a quenched random field.
The strength of the random field is observed to play a similar role to that
played by temperature. Becker-D\"oring theory of classical nucleation
(originally proposed for the spin-1/2 Ising system) has been verified in the
random field Ising model. However, a stronger random field affects the
nucleation regime. In a cubic Ising lattice, surface reversal time is found to
be different from the bulk reversal time. That distinct behaviour of the
surface in contrast to the bulk has been studied here by introducing a relative
interfacial interaction strength (). Depending on , temperature, and
applied field, a competitive switching of magnetisation of surface and bulk is
noticed. The effect of anisotropy () on the metastable lifetime has been
investigated. We report a linear dependency of the mean macroscopic reversal
time on a suitably defined microscopic reversal time. The saturated
magnetisation , after the reversal, is noticed to be strongly dependent on
. , , and (field) are found to follow a proposed scaling
relation. Finally, Becker-D\"oring theory as well as Avrami's law are verified
in spin- Ising and Blume-Capel models. The switching time depends on the
number of accessible spin states.Comment: Invited review article, to appear in Comprehensive Materials
Processing (2E), Elsevie
