Maintenance policies for an heterogeneous two-component system with stochastic and economic dependencies

Condition Based Maintenance for Two-Component Systems with Reliability and Cost Considerations

This paper studies a maintenance policy for a system composed of two components, which are subject to continuous deterioration and consequently stochastic failure. The failure of each component results in the failure of the system. The components are inspected periodically and their deterioration degrees are monitored. The components can be maintained using different maintenance actions (repair...

Hybrid block replacement and inspection policies for a multi-component system with heterogeneous component lives

Novel replacement policies that are hybrids of inspection maintenance and block replacement are developed for an n component series system in which the component parts used at successive replacements arise from a heterogeneous population. The heterogeneous nature of components implies a mixed distribution for time to failure. In these circumstances, a hybrid policy comprising two phases, and ea...

Coordinated and Joint Ordering Policies for Two Commodity Inventory System

An Integrated Aggregate Production Planning Model with Two-Phase Production System and Maintenance Costs

Aggregate production planning (APP) is one of the most important issues carried out in manufacturing environments which seeks efficient planning, scheduling and coordination of all production activities that optimizes the company's objectives. In this paper, we develop a mixed integer linear programming (MILP) model for an integrated aggregate production planning system with closed loop supply ...

Economic Policies of Heterogeneous Politicians

This paper studies how a politician’s preferences and abilities to influence public and private sector productivity affect her choices over economic policies. Extremism between policies of leftand right-wing incumbents increases with ability, because voters are more willing to re-elect competent politicians. Positive correlations between certain ability dimensions and preferences amplify politi...