The mini trawl fishery of Kerala

Mini trawl operation started in Kerala during 1987, is another post motorisation innovation like the ring seine by the artisanal fishers. During 1987-2002, annual mini trawl landings ranged between 1,500 and 18,600 tonnes. The minimum landing was in 1987, when this gear was introduced for the first time in Kerala and the peak landings of 18,600 tonnes was during 1997. The low investment of the mini trawls at the initial stage has attracted more fishermen. A trend in component group landings and seasonal trends have been cited in this information. They could earn more for their livelihood with less investment. Prawns which come to the nearby shore for breeding, are caught by this gear. Appropriate management measures need to be taken to regulate this fishery for ensuring sustrainbility and better livelihood for the artisanal sector

IRIS Feature Extraction and Classification using FPGA

An approach of singular value (SVD) of a (mxn) 2-D matrix has beenpopularly used by researchers for representing a 2-D image by a set of less than or equal to n values sequenced in descending order of which a subset of only first few values which are significant is treated as a set of features for that image. These features are further used for image recognition and classification. Though many papers as reviewed from literature have discussed about this implantation using software/MATLAB approach, rarely a paper appears on hardware implementation of SVD algorithm for image processing applications. This paper presents the details of a hardware architecture developed by us to implement SVD algorithm and then presents the results of implementation of this architecture in the Xilinx field programmable gate array Virtex5 to extract the features of an iris image. A comparison between the feature values extracted by MATLAB and those obtained by hardware simulation using Xilinx ISE tool indicates a very good match validating the hardware architecture. A hamming distance classifier using appropriate threshold values stored in ROM is used to classify the iris images.DOI:http://dx.doi.org/10.11591/ijece.v2i2.15

Appraisal of the Marine Fisheries of West Bengal

The state of West Bengal is situated between the latitudes 21.5CN and 24.5°N and the longitudes 86CE and 89°E. Its location is in the northern part of Bay of Bengal; between the state of Orissa in the south and Bangladesh in the east. West Bengal, with an area of 87,853 sq. km accounts for 2.6% of the geographical area of India. For administrative purposes, the state is divided into 3 Divisions : Burdwam Division, Presidency Division and Jalpaiguri Division. Within each division the districts form administrative units. There are 16 districts of which two are coastal. The coastal districts are Midnapore and 24 Parganas. These together have a coastline of 65.0 km, forming 1.0% of the coastline of India

Role of Light Vector Mesons in the Heavy Particle Chiral Lagrangian

We give the general framework for adding "light" vector particles to the heavy hadron effective chiral Lagrangian. This has strong motivations both from the phenomenological and aesthetic standpoints. An application to the already observed D \rightarrow \overbar{K^*} weak transition amplitude is discussed.Comment: 19 pages, LaTeX documen

Baryons with Two Heavy Quarks as Solitons

Using the chiral soliton model and heavy quark symmetry we study baryons containing two heavy quarks. If there exists a stable (under strong interactions) meson consisting of two heavy quarks and two light ones, then we find that there always exists a state of this meson bound to a chiral soliton and to a chiral anti-soliton, corresponding to a two heavy quark baryon and a baryon containing two heavy anti-quarks and five light quarks, or a ``heptaquark".Comment: 7 pages and 2 postscript figures appended, LaTex, UCI-TR 94-3

Marine fisheries of the south-west coast of India during 2008

The south-west region comprising the states of Kerala, Karnataka and Goa with a coastline of 994 km and 7.83 lakh fishermen population, had been the most productive and the largest contributor to the country’s total marine fish landings. Marine fish production in this region during the year 2008 has been estimated as 11.11 lakh t, contributing about 34.5% to the all India landing

Heavy Quark Solitons

We investigate the heavy baryons which arise as solitonic excitations in a ``heavy meson" chiral Lagrangian which includes the light vector particles. It is found that the effect of the light vectors may be substantial. We also present a simple derivation which clearly shows the connection to the Callan-Klebanov approach.Comment: 13 pages; LaTex; SU-4240-532; UR 1306/ER-40685-755 (Minor typos corrected

Internal Modes and Magnon Scattering on Topological Solitons in 2d Easy-Axis Ferromagnets

We study the magnon modes in the presence of a topological soliton in a 2d Heisenberg easy-axis ferromagnet. The problem of magnon scattering on the soliton with arbitrary relation between the soliton radius R and the "magnetic length" Delta_0 is investigated for partial modes with different values of the azimuthal quantum numbers m. Truly local modes are shown to be present for all values of m, when the soliton radius is enough large. The eigenfrequencies of such internal modes are calculated analytically on limiting case of a large soliton radius and numerically for arbitrary soliton radius. It is demonstrated that the model of an isotropic magnet, which admits an exact analytical investigation, is not adequate even for the limit of small radius solitons, R<<Delta_0: there exists a local mode with nonzero frequency. We use the data about local modes to derive the effective equation of soliton motion; this equation has the usual Newtonian form in contrast to the case of the easy-plane ferromagnet. The effective mass of the soliton is found.Comment: 33 pages (REVTeX), 12 figures (EPS

Appraisal of the Marine Fisheries in Orissa

The State Orissa is situated between latitudes 17.75°N and 22.5°N and longitudes 81.5°E and 87.6°E, bordered by the Bay of Bengal in the east, West Bengal in the north-east, Bihar in the north, Madhyapradesh in the west and north-west, and Andhra Pradesh in the south. Orissa, with an area of 1 55,842 sq. km. accounts for 4.7% of the geographical area of India. The state has 13 districts, of which four are coastal. The coastal districts are Balasore, Cuttack, Puri and Ganjam. These together have a coastline of 480 km. forming 8% of the coastline of India