S. N. Dwivedi

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"A probability distribution for describing the variation in the length of open birth interval regardless of parity has been derived assuming that fecundability varies from female to female and the births are of two types, one which results [in] infant death and the other [which does] not. To get the estimates of the parameters, expressions for the first(More)
One of the crucial problems in integrating machines and human experts in new-generation engineering design and manufacture systems is the effective man-machine communication. The object-oriented knowledge-based environment requires an appropriate graphical user interface built on the modern principles of object-and constraint-oriented programming, visual(More)
Craniosynostosis (CS) is premature fusion of skull. It is divided into two groups: Syndromic craniosynostosis (SCS) and non-syndromic craniosynostosis (NSC). Its incidence in Indian population is 1:1000 live births where as in the USA it is 1:2500 live births. Its incidence varies from country to country. Molecular genetics having great interest and(More)
"In this paper, a set of two probability models have been derived to describe the variation in the length of open birth interval of women having given birth to a child during the last 'T' years of their current reproductive age. The first model is derived by assuming the reproduction process as steady-state, the second is obtained by varying the(More)
Data on birth intervals are said to detect current changes in underlying fertility behavior earlier than birth rates and are used especially in developing countries to evaluate family planning programs. Birth interval information comes mostly from retrospective inquiries into maternity histories. Accounting for adolescent sterility and temporary(More)
This paper develops a truncated continous probability distribution for the waiting time of Indian 1st birth day taking into account the fact that the inoperative period immediately after marriage due to adolescent sterility is exponentially distributed and females are exposed to the risk of conception at different points of time since marriage because of(More)
BACKGROUND Cryopreservation is basically related to meritorious thin samples or small clumps of cells that are cooled quickly without loss. Our main objective is to establish and formulate an innovative method and protocol development for cryopreservation as a gold standard for clinical uses in laboratory practice and treatment. The knowledge regarding(More)