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Turnpike Horizons for Production Planning

Sethi, Suresh - 2019

A quadratic model for production-inventory planning was made famous by Holt, Modigliani, Muth, and Simon in 1960 in [3], especially for its application to a paint factory. A discrete control version of a related quadratic production-inventory model was studied by Kleindorfer, Kriebel, Thompson,...

Persistent link: https://www.econbiz.de/10012746433

Solving Airline Crew Scheduling Problems by Branch-and-Cut

Hoffman, Karla L.; Padberg, Manfred - In: Management Science 39 (1993) 6, pp. 657-682

The crew scheduling problem is one that has been studied almost continually for the past 40 years but all prior approaches have always approximated the problem of finding an optimal schedule for even the smallest of an airline's fleets. The problem is especially important today since costs for...

Persistent link: https://www.econbiz.de/10009218363

A Polyhedral Approach to Simplified Crew Scheduling and Vehicle Scheduling Problems

Fischetti, Matteo; Lodi, Andrea; Martello, Silvano; … - In: Management Science 47 (2001) 6, pp. 833-850

Crew and vehicle scheduling are fundamental issues in public transit management. Informally, they can be described as the problem of determining the optimal duties for a set of crews (e.g., bus drivers) or vehicles (e.g., buses) so as to cover a given set of timetabled trips, satisfying a number...

Persistent link: https://www.econbiz.de/10009204598

An Optimization Model for the Simultaneous Operational Flight and Pilot Scheduling Problem

Mirela Stojkovi\'{c}; Soumis, François - In: Management Science 47 (2001) 9, pp. 1290-1305

This paper describes and solves the operational pilot scheduling problem for one day of operations. The problem consists in simultaneously modifying, as necessary, the existing flight departure schedules and planned individual work days (duties) while keeping planned aircraft itineraries...

Persistent link: https://www.econbiz.de/10009191858

Crew Planning at Flying Tiger: A Successful Application of Integer Programming

Marsten, Roy E.; Muller, Michael R.; Killion, Christine L. - In: Management Science 25 (1979) 12, pp. 1175-1183

This paper presents a successful application of integer programming to the scheduling of flight crews for a cargo airline. The crew planning process is discussed, the role of the set partitioning model is explained, and representative computational experience is reported. The success of this...

Persistent link: https://www.econbiz.de/10009198178

Flight Crew Scheduling

Graves, Glenn W.; McBride, Richard D.; Gershkoff, Ira; … - In: Management Science 39 (1993) 6, pp. 736-745

A new crew scheduling optimization system has been developed for United Airlines. The system was developed to permit quick response to schedule changes and to reduce crew scheduling costs. It was designed to work efficiently for both the medium sized problems (300 flights daily) and the very...

Persistent link: https://www.econbiz.de/10009198284

The Relational Advantages of Intermediation

Belavina, Elena; Girotra, Karan - In: Management Science 58 (2012) 9, pp. 1614-1631

This paper provides a novel explanation for the use of supply chain intermediaries. We find that even in the absence of the well-known transactional and informational advantages of mediation, intermediaries improve supply chain performance. In particular, intermediaries facilitate responsive...

Persistent link: https://www.econbiz.de/10010990431

Stochastic Capacity Investment and Flexible vs. Dedicated Technology Choice in Imperfect Capital Markets

Boyabatl, Onur; inodot; Toktay, L. Beril - In: Management Science 57 (2011) 12, pp. 2163-2179

This paper analyzes the impact of endogenous credit terms under capital market imperfections in a capacity investment setting. We model a monopolist firm that decides on its technology choice (flexible versus dedicated) and capacity level under demand uncertainty. Differing from the majority of...

Persistent link: https://www.econbiz.de/10010990459

Developing Products on "Internet Time": The Anatomy of a Flexible Development Process

MacCormack, Alan; Verganti, Roberto; Iansiti, Marco - In: Management Science 47 (2001) 1, pp. 133-150

an architecture that facilitates development process flexibility. We provide examples from our fieldwork to support this …

Persistent link: https://www.econbiz.de/10009209051

The Value of Resource Flexibility in the Resource-Constrained Job Assignment Problem

Vairaktarakis, George L. - In: Management Science 49 (2003) 6, pp. 718-732

consistently perform near optimally. Using these heuristics, we perform experiments on the effect of operating flexibility on … project duration, where resource flexibility is measured by the number of resources available per activity, and the form of … flexibility on project duration. For instance, it is found that when the flexible capabilities of the resources are evenly …

Persistent link: https://www.econbiz.de/10009209061