OR Insight
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British Rail InterCity strategic planning
OR Insight - Tập 4 - Trang 2-5 - 1991
Decisions concerning the number of new locomotives and coaches to buy are critical to InterCity's future. Operational Research was called in to help in this decision for the newly-electrified East Coast Main Line route. Developing a new approach, OR advised not only on this decision, but has now produced a computer-based decision-support tool for InterCity planners to use in determining medium-ter......
Surgical instruments
OR Insight - Tập 5 - Trang 20-23 - 1992
The speed of flow of patients through a surgical unit and the use of resources, such as theatre time and beds, can have a complex relationship, but one that can be analysed using simulation models. These models aim to mimic the day-to-day activities of admission, operation, transfer and discharge according to characteristics of the unit and patients being treated. “What-if” analysis can be underta......
Heuristics are here to help your online vehicle scheduling
OR Insight - Tập 22 - Trang 88-104 - 2009
An application of real-time changes in scheduling deliveries of road-making materials is conducted based on an implementation of a tabu search heuristic. This distribution problem deals with heterogeneous products and vehicles where the assignment of pickup points to requests needs also to be made. The problem is investigated as a full-load pickup and delivery problem with time windows. Online as ......
“Hit or miss?”
OR Insight - - 1991
This article describes the derivation of a “performance/target ratio” and its practical application to the quality of service performance of two public sector industries. The material is based on the authors' work for the Monopolies and Mergers Commission and the data used has been published in the Commission's reports. The authors would like to thank the MMC for permission to publish, but the vie......
Operations Research in Ireland
OR Insight - Tập 4 - Trang 28-28 - 1991
This book comprises contributions from a number of prominent practitioners of OR in Ireland. The approach used, of each essay giving a historical synopsis and then one or more easily readable case studies, is very effective. The editor cannot have had an easy task in so constraining the authors without hampering their individuality. He succeeded. The reviewer has worked with a number of the contri......
Understanding operational strategies by examining quality deposits
OR Insight - Tập 23 - Trang 44-56 - 2010
Most mature organisations regularly undertake varying forms of business improvement activities, from specific operationally focused project activities to organisation-wide change initiatives. While the success of business improvement approaches is often debated, such initiatives always leave some form of trace or legacy behind, often in the form of specific processes and procedures, individual or ......
Hedging your bets in an uncertain world
OR Insight - Tập 4 - Trang 23-25 - 1991
In 1986 the Treasury Management Unit (TMU) of the Export Credits Guarantee Department (ECGD) carried out one of the biggest interest rate-swap exercises undertaken as of that date by a single organization. ECGD's Operational Research Services (ORS) built a computer model to analyse over 400 loans and to identify possible swaps. The successful implementation of this model led to a member of ORS bei......
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