A warranty policy for a product should balance the interests of both producer and consumer. Consumer protection is typically provided by a guarantee of replacement or some form of repair of the product failing within a promised warranty period, while an approach to provide a corresponding protection for the manufacturer is to limit the maximum usage allowed under warranty. Such warranty policie...

Artificial water-level fluctuations (WLF) seriously threaten the biodiversity and functioning of littoral zones in lake ecosystems. The use artificial floating islands (AFI) to compensate for deleterious effects WLF on habitats has been increasing interest environmental managers. Yet, ecological efficiency this solution is still very poorly documented. AFI are usually designed as simple vegetat...

This study considers the problem of numerical modeling PEEK product’s 3D printing using FDM technology. The aim is to verify adequacy use a thermoviscoelastic model for computations deposition process and develop an algorithm calculating this process. Prony used describe behavior material under study; temperature-time shift described by Williams–Landel–Ferry function (WLF). To obtain values con...

We approximate the distribution of total expenditure of a retail company over warranty claims incurred in a fixed period [0, T ], say the following quarter. We consider two kinds of warranty policies, namely, the non-renewing free replacement warranty policy and the non-renewing pro-rata warranty policy. Our approximation holds under modest assumptions on the distribution of the sales process o...

Warranty is now an integral part of each product. Since its length is directly related to the cost of production, it should be set in such a way that it would maximize revenue generation and customers’ satisfaction. Furthermore, based on the behavior of customers, it is assumed that increasing the warranty period to earn the trust of more customers leads to more sales until the market is sat...

For second-hand products sold with warranty, the expected warranty cost for an item to the manufacturer, depends on (i) the age and/or usage as well as the maintenance history for the item and (ii) the terms of the warranty policy. The paper develops probabilistic models to compute the expected warranty cost to the manufacturer when the items are sold with free replacement or pro rata warrantie...

The Proxel method is a state space-based approach to the simulation of discrete stochastic models. It implements the method of supplementary variables in an algorithmic, rather than mathematical way, without using partial differential equations and is able to solve a wide class of stochastic models. The approach has proven to be very competitive with discrete-event simulation for a class of mod...