A thesis on ranking and selection in the method of paired comparison

Experimental situations where the subjective judgements or appraisals of the individuals , lead to qualitative, comparative responses or situations where quantifications through measure ments are difficult or illusary, the method of paired comparison has a significant role to play. Interest in paired comparison has been generated through the paired nature of competitions of many kinds, through the experimental simplicit:y of sensory comparisons of items observed in pairs, and through combinatorial properties associated with the construction of experimental designs or tournaments. The method of paired comparisons has had a long and honourable history in psycological experiments. During the past three decades this method has attracted the attention of people from a wide spectrum of interest. In general, the method would be applicable whenever the objects can be presented to judges to assess their non-measurable quality in pairs either simulteniously or in succession. The basic goal in the method of paired comparison is to discriminate between t> 2 treatments, on the basis of preference data obtained by presenting the treatments in pairs in a given order to a set of judges according to a specified paired comparison design. In such experimental situations the method has led to a surprising amount of model building to provide simple stochastic representation. The main statistical problem with these models have generally been that of estimation of the true worths of the treatments, testing of goodness of fit of the model, testing the hypothesis of equality of treatments etc based on the score vector obtained by using a suitable economical paired comparison design. Another type of problem that is of interest is to select the best treatment with at least a specified high probability, using a definite selection rule. Selection rules are defined in terms of the score vector that is obtained by using the given design. A related problem i s that o f choosing a subset of given treatments which includes the best treatment with at least a specified high probability. These problems are respectively special cases of the two basic formulations referred to as Indifference zone formulation end Subset s e l ection formulation in the area of Ranking and Selection procedures for statistical populations

Structural change in the traditional fishery of Kerala and its socio economic implications

Motorization of traditional fishing craft has paved the way for a structural change in the artisanal fishery of Kerala. During the mid eighties the traditional sector started operating mini purse seines (Ring seine) and mini trawl nets and consequently the traditional gears in vogue for decades have been either disappeared or thoroughly modified. These two gears together contributed to more than 80% of the traditional landings. Hence the traditional fishing scenario has been completely changed which resulted in far reaching developments in the artisanal fishery sector

The eels and eel fisheries of India

Traditionally marketable species of eels are caught from conventional fishing grounds of northwest and northeast coasts of India and are largely a by-catch

Present status of exploitation of fish and shellfish resources: Marine fish production of maritime states Of the west coast of India

To highlight the fishery in monsoon, an attempt has been made In this paper to evaluate the impad of monsoon fishing on the exploited marine fish stocks in the west coast of India and the trends In the production of various group in different seasons discussed. Except in Kerala where monsoon fishing is intensive due to the Mud Bank fishery and trawling off Sakthlkulangara and Kochi, in the rest of the coast fishing adivitics are not as intensive as in Kerala during monsoon. The major gears used during monsoon are trawls and ring seines in Keral

Marine fisheries of Orissa

A brief account of marine fish landings in Orissa during 1985 to 1995 is given in this paper. Gearwise, groupwise and districtwise marine fish landings in this state was also discussed together with a critical analysis of marine fishery of the state during the last five decade

Marine fisheries in Gujarat

A brief account of marine fish landings in Gujarat during 1985- 95 is given in this paper. Contribution of different gears along with the CPUE and the regionwise as well as groupwise details are also presented. The status and prospect of marine fisheries ofihe state is discussed with the aid of last 5 decades landing data

Present status of exploitation of fish and shellfish resources: Ribbonfishes

The average annual ribbonfish production of the west coast is estimated at 56,883 tonnes which forms 5.71% of the total fish landing of he coast. Postmonsoon m n reaIised 47% of the catch M o d by prmonm (39%) and m o n m (14%) seasons. This trend Is well seen In States like Maharashtra and Karnataka. In Kerala, however, the peak landing (49%) was found during mosoon months while in the other two States it was during the premonsoon period. Trawl net is the only gear operated in all the States during all the seasons and It accounts few about 67% of the total catch

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

Production pattern in the marine fisheries of Kerala

Fisheries play a crucial role in the Kerala economy. Although the coastline is only about one tenth of the coastline of India, landings in Kerala constitute more than 30 pet of the country's total marine fish production. This sector provides the main source of income for about 147900 active fishermen and for almost an equal number engaged in the activities of processing and marketing. Earnings from export of marine production from Kerala have during the past two decades increased considerably. The marine fisheries sector is therefore one of the major concerns of the economic planners in the state of Kerala and the object of A various development programmes

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