Spare Parts Inventory Control Under a Fixed-Term Contract with a Long-Down Constraint - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Spare Parts Inventory Control Under a Fixed-Term Contract with a Long-Down Constraint write by Douniel Lamghari-Idrissi. This book was released on 2019. Spare Parts Inventory Control Under a Fixed-Term Contract with a Long-Down Constraint available in PDF, EPUB and Kindle. We are interested in service contracts for spare parts. We introduce a new performance measure, XLD (extreme long down), that limits the number of deliveries that are later than an agreed threshold during the contract period. We consider a single item, single location stockpoint serving multiple systems where demand is satisfied in an alternative way if the stockpoint is out of stock. Using a finite horizon Markov decision process, we derive the optimal spare parts inventory policy for meeting the contract at minimum costs. We prove that a state-dependent and time-dependent base stock policy is optimal. We also prove that the optimal base stock level is non-increasing in the number of allowed extreme long downs in the remaining contract period and that the optimal base stock level decreases at most by one unit per step. We formulate three heuristics for our finite horizon problem. These heuristics are a translation of heuristics commonly used for other service measures than the XLD measure. We assess their performance in comparison to the optimal policy. The results of our numerical study show that Heuristic 3, a myopic heuristic, is the best performing with an average optimality gap of 4.5% and an optimality gap lower than 5% in 81% of the instances. The maximum optimality gap is very high for all three heuristics, showing that important savings can be made by taking into account the actual contract performance and the remaining contract duration in stocking decisions.
Spare Parts Inventory Control under System Availability Constraints
Spare Parts Inventory Control under System Availability Constraints - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Spare Parts Inventory Control under System Availability Constraints write by Geert-Jan van Houtum. This book was released on 2015-05-18. Spare Parts Inventory Control under System Availability Constraints available in PDF, EPUB and Kindle. This book focuses on the tactical planning level for spare parts management. It describes a series of multi-item inventory models and presents exact and heuristic optimization methods, including greedy heuristics that work well for real, life-sized problems. The intended audience consists of graduate students, starting scholars in the field of spare parts inventory control, and spare parts planning specialists in the industry. In individual chapters the authors consider topics including: a basic single-location model; single-location models with multiple machine types and/or machine groups; the multi-location model with lateral transshipments; the classical METRIC model and its generalization to multi-indenture systems; and a single-location model with an explicit modeling of the repair capacity for failed parts and the priorities that one can set there. Various chapters of the book are used in a master course at Eindhoven University of Technology and in a PhD course of the Graduate Program Operations Management and Logistics (a Dutch network that organizes PhD courses in the field of OM&L). The required pre-knowledge consists of probability theory and basic knowledge of Markov processes and queuing theory. End-of-chapter problems appear for all chapters, with some answers appearing in an appendix.
"CPDREV" a Spare Parts Inventory Control System
"CPDREV" a Spare Parts Inventory Control System - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook "CPDREV" a Spare Parts Inventory Control System write by A. C. Morgenthaler. This book was released on 1969. "CPDREV" a Spare Parts Inventory Control System available in PDF, EPUB and Kindle.
Hierarchical Spare Parts Inventory Systems
Hierarchical Spare Parts Inventory Systems - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Hierarchical Spare Parts Inventory Systems write by Rastko Petrović. This book was released on 1986. Hierarchical Spare Parts Inventory Systems available in PDF, EPUB and Kindle.
The Goal
The Goal - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook The Goal write by Eliyahu M. Goldratt. This book was released on 2016-08-12. The Goal available in PDF, EPUB and Kindle. Alex Rogo is a harried plant manager working ever more desperately to try and improve performance. His factory is rapidly heading for disaster. So is his marriage. He has ninety days to save his plant - or it will be closed by corporate HQ, with hundreds of job losses. It takes a chance meeting with a colleague from student days - Jonah - to help him break out of conventional ways of thinking to see what needs to be done. Described by Fortune as a 'guru to industry' and by Businessweek as a 'genius', Eliyahu M. Goldratt was an internationally recognized leader in the development of new business management concepts and systems. This 20th anniversary edition includes a series of detailed case study interviews by David Whitford, Editor at Large, Fortune Small Business, which explore how organizations around the world have been transformed by Eli Goldratt's ideas. The story of Alex's fight to save his plant contains a serious message for all managers in industry and explains the ideas which underline the Theory of Constraints (TOC) developed by Eli Goldratt. Written in a fast-paced thriller style, The Goal is the gripping novel which is transforming management thinking throughout the Western world. It is a book to recommend to your friends in industry - even to your bosses - but not to your competitors!
