303 research outputs found
A Frame Work for the Error Analysis of Discontinuous Finite Element Methods for Elliptic Optimal Control Problems and Applications to IP methods
In this article, an abstract framework for the error analysis of
discontinuous Galerkin methods for control constrained optimal control problems
is developed. The analysis establishes the best approximation result from a
priori analysis point of view and delivers reliable and efficient a posteriori
error estimators. The results are applicable to a variety of problems just
under the minimal regularity possessed by the well-posed ness of the problem.
Subsequently, applications of interior penalty methods for a boundary
control problem as well as a distributed control problem governed by the
biharmonic equation subject to simply supported boundary conditions are
discussed through the abstract analysis. Numerical experiments illustrate the
theoretical findings. Finally, we also discuss the variational discontinuous
discretization method (without discretizing the control) and its corresponding
error estimates.Comment: 23 pages, 5 figures, 1 tabl
Feasibility of polyethylene mariculture in the filmlined ponds
Preparation and management of polyethylene
film-lined ponds for mariculture purposes and
the environmental conditions of the culture system
are given in this paper along with the results
of milkfish culture experiments conducted in
eight ponds
Growth and survival of tiger prawn, Penaeus monodon in the sandy beach ponds at Calicut
Penaeus monodon is one of the important species contributing to the traditional culture fisheries of the Southeast Asian countries and to the well established intensive or semi-intensive culture practices of the Indo-Pacific region. Culture of this species has been attempted in the polyethylene film-lined ponds made in the sandy beach. The present data on the giowth rate and percentage of recovery suggest that the culture conditions maintained in the experimental pond at Calicut were suitable for obtaining better results. Further, it is expected that better production rate can be achieved by increasing the stocking density to an optimum level which, however, could not be carried out due to scarcity of material during the present experimen
Homogenization of low-cost control problems on perforated domains
AbstractThe aim of this paper is to study the asymptotic behaviour of some low-cost control problems in periodically perforated domains with Neumann condition on the boundary of the holes. The optimal control problems considered here are governed by a second order elliptic boundary value problem with oscillating coefficients. It is assumed that the cost of the control is of the same order as that describing the oscillations of the coefficients. The asymptotic analysis of small cost problem is more delicate and need the H-convergence result for weak data. In this connection, an H-convergence result for weak data under some hypotheses is also proved
The cultural greatness preserved by cilappatikaram
This paper studies the cultural greatness preserved by Cilappatikaram. Tamil
literary texts have ennumerated morals for good conduct of life. They reveal
richness of life to human society and express some worthy ideas though past
events are imagined. Cilappatikaram is a unique Tamil literary composition.
Cankam texts have described upsets created in society due to association with
harlots. The ethical texts like Tirukkural have condemned prostitution. Ilango
Adikal composed Cilappatikaram considering past events and conditions of
contemporary society. The epic shows how the association with harlots will affect
family, society and country. Its excellence is preservation of cultural greatness.
The poet achieves his object by portraying lives of Kovalan, Kannaki and Matavi.
Cilappatikaram is the source for this research. Its object is to identify cultural
complexities created by prostitution and social harmony that Ilanko wanted to
preserve. Analytical, descriptive and comparative methodologies are preferred.
Disorder created by harlots at the levels of family, society and country will be
analysed. By descriptive method the poems are explained. The qualities of the
characters are compared. Through this research the disorderliness created by
relationship with harlots and the importance of preservation of culture could be
identified
Potential resources of cultivable fish seed around Calicut area
The availability and abundance of cultivable fish seeds around Calicut area have been presented. The nature
of the seed grounds and the seeds available in the different localities and the seasons of their
occurrence have been described qualit8!ively and Quantitativel
Record production of milkfish from ponds developed in sandy beach at Calicut
The milkfish, Chanos chanos, a hardy, euryhaline and fast growing species was cultured to
study the production as well as survival rates in the pump-fed, polyethylene film lined ponds
developed on sandy beach at Calicut Research Centre of CMFRI from July 1982 to February 1983
The intensive farming of striped Mullet, Mugil cephalus Linnaeus, in the polyethylene film-lined ponds developed on the sea shore at Calicut, Kerala
Significant advances have been made in the mariculture fin fishes in many parts of the world. In India two major cultivable fin fishes, namely,
mullets and milk fish, have been used in the traditional culture practices and also in the scientific culture of fin fishes in ponds and pens. Among mullets, the striped mullet Mugil cephalus is a fast growing species and is commonly available on the east and west coasts of India. It is also an important table fish and has a good market both in the coastal and interior regions of our country
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