Lekha,P V; Dr.Ram Mohan,H S(Cochin University of Science And Technology, May , 1992)
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Abstract:
Usually, under rainfed conditions the growing period exists
in the humid months. Hence, for agricultural planning knowledge
about the variabilities of the duration of the humid seasons are
very much needed. The crucial problem affecting agriculture is
the persistency in receiving a specific amount of rainfall during a short period. Agricultural operations and decision making are highly dependent on the probability of receiving given amounts of rainfall; such periods should match the water requirements of different phenological phases of the crops. While prolonged dry periods during sensitive phases are detrimental to their growth and lower the yields, excess of rainfall causes soil erosion and loss of soil nutrients. These factors point to the importance of evaluation of wet and dry spells. In this study the weekly rainfall data have been analysed to estimate the probability of wet and dry periods at all selected stations of each agroclimatic zone and the crop growth potentials of the growing seasons have been analysed. The thesis consists of six Chapters.
Description:
School of marine sciences, Cochin University of Science And Technology
Sindu,T K; Sankaran, P G(COCHIN UNIVERSITY OF SCIENCE AND TECHNOLOGY, December , 2002)
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Abstract:
In the present environment, industry should provide the products of high quality. Quality of products is judged by the period of time they can successfully perform their intended functions without failure. The cause of the failures can be ascertained through life testing experiments and the times to failure due to different cause are likely to follow different distributions. Knowledge of this distribution is essential to eliminate causes of failures and thereby to improve the quality and the reliability of products. The main accomplishment expected to the study is to develop statistical tools that could facilitate solution to lifetime data arising in such and similar contexts