in today’s fiercely competitive products market, product warranty has started playing an important role. currently, a large number of products are being sold with warranty policies in the form of free replacement warranty, pro-rata warranty, and combined warranty policies. pro-rata warranties are relatively a complex concept. the modeling of failures during the warranty period and the costs for...

Countercurrent immunoelectrophoresis was used to assay bloodmeals to determine the hostspecificity of Anopheles culicifarics species-A and B, collected from areas in Delhi, Uttar piadesh and Bihar. Results indicated the-predominantly zoophagic nature of species A and B with " r.t"tiullv higher degree of anthropophagy for species A. Furth-er, the human blood index was found to be relatei to the ...

Cost assessment related to age of multiple components is discussed. We use definitions of equivalent ages in multi-dimensional life to illustrate how cost characteristics should be fairly assessed. Pricing of used items with residual value and assigning warranty for used items as a function of item’s age are the subjects of our study. Numeric examples based on correlated Bivariate normal distri...

The long-term sustainability of our resources is dependent on reducing the consumption of virgin resources, and one method of achieving this goal is product remanufacturing. It is already established that the production of remanufactured products costs less than that of creating a new one, however the effects of this on warranty costs are now considered. Due to consumer perceptions of the quali...

In this paper, an analytic solution is presented using differential transform method (DTM) for a class of wave equation. The emphasis is on the nonlinear two-dimensional wave equation. The procedures introduced in this paper are in recursive forms which can be used to obtain the closed form of the solutions, if they are required. The method is tested on various examples, and the results reveal ...

Human society is entering the era of Industry 4.0; engineering systems are becoming more complex, which increases difficulties maintenance support work. Failure dependence exists widely in multi-component systems. In this work, a model two-dimensional (2D) warranty decision making was constructed by using failure-dependence analysis for and considering extended cost system availability. The to ...

In this article, by considering both a limited number of failure replacements and random working cycles as warranty terms, hybrid (HW) is designed from the manufacturer’s point view to warrant product that does successive projects at cycles. The cost produced HW derived analyzed. By defining warrants product, two types post-warranty replacement models are investigated consumer’s ensure reliabil...