A direct method for calculating the minimal length of “one-dimensional” Josephson junctions is proposed, in which the specific distribution of the magnetic flux retains its stability. Since the length of the junctions is a variable quantity, the corresponding nonlinear spectral problem as a problem with free boundaries is interpreted. The obtained results give us warranty to consider as “long”,...

Preventive maintenance actions over the warranty period have an impact on the warranty servicing cost to the manufacturer and the cost to the buyer of fixing failures over the life of the product after the warranty expires. However, preventive maintenance costs money and is worthwhile only when these costs exceed the reduction in other costs. The paper deals with a model to determine when preve...

Most companies seek efficient rectification strategies to keep their warranty related costs under control. This study develops and investigates different repair strategies for oneand two-dimensional warranties with the objective of minimizing manufacturer’s expected warranty cost. Static, improved and dynamic repair strategies are proposed and analyzed under different warranty structures. Numer...

In today’s global environment, technology is constantly evolving. Being able to stay up-to-date with the very latest technological advances can be extremely hard to accomplish. As a result of these changes and developments in technology, which often come unexpectedly, consumers are frequently tempted to update their devices to the very latest model. The result is that the life cycle of a produc...

Modelling of deteriorating systems with preventive repair during warranty using geometric processes was carried out in the previous chapter. In this chapter the independent and identically distributed assumption of geometric processes is relaxed to assume only the independent successive inter arrival times. Surveying the literature, one is struck by the fact that there has been so little resear...

This paper addresses the problem of durable goods manufacturers in an oligopoly seeking optimal values for three decision variables: product warranty, reliability and price. Each ®rm seeks a warranty-reliability-price combination that maximizes expected pro®t subject to quite general constraints on the ®rm's decision variables. Warranty serves as a signal of product reliability, which is not ob...