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Cut-first branch-and-price-second for the capacitated arc-routing problem

Bode, Claudia; Irnich, Stefan - 2011

This paper presents the first full-fledged branch-and-price (bap) algorithm for the capacitated arc-routing problem (CARP). Prior exact solution techniques either rely on cutting planes or the transformation of the CARP into a node-routing problem. The drawbacks are either models with inherent...

Persistent link: https://www.econbiz.de/10009484575

Cost-efficient Variable Selection Using Branching LARS

Yue, Li Hua - 2010

Variable selection is a difficult problem in statistical model building. Identification of cost efficient diagnostic factors is very important to health researchers, but most variable selection methods do not take into account the cost of collecting data for the predictors. The trade off between...

Persistent link: https://www.econbiz.de/10009447237

Resource allocation in the Grid. A market engineering approach

Schnizler, Björn - 2007

The Grid provides access to distributed computational capabilities such as processors or storage space. One of the key problems is deciding which jobs are to be allocated to which resources at what time. In this context, the use of market mechanisms is a promising approach to solve these...

Persistent link: https://www.econbiz.de/10009434636

Market-Based Scheduling in Distributed Computing Systems

Stößer, Jochen - 2009

In verteilten Rechensystemen (bspw. im Cluster und Grid Computing) kann eine Knappheit der zur Verfügung stehenden Ressourcen auftreten. Hier haben Marktmechanismen das Potenzial, Ressourcenbedarf und -angebot durch geeignete Anreizmechanismen zu koordinieren und somit die ökonomische...

Persistent link: https://www.econbiz.de/10009434657

Resource aggregation issues and effects in mixed model assembly

Burdett, Robert L.; Kozan, Erhan - 2003

sequencing and scheduling decisions may be performed more efficiently. Resource aggregation can potentially and significantly … machine scheduling environment and for any combination of distinct and indistinct resources. A number of alternative measures …

Persistent link: https://www.econbiz.de/10009437549

Sequencing and scheduling in flowshops with task redistribution

Burdett, Robert L.; Kozan, Erhan - 2001

scheduling. From an extensive numerical investigation, the benefits achieved by the application of this methodology are detailed. …

Persistent link: https://www.econbiz.de/10009437714

Inducing Optimal Scheduling with Selfish Users

Enders, Paul; Gandhi, Anshul; Gupta, Varun; Debo, Laurens; … - 2008

It is well known that scheduling jobs according to the Shortest-Remaining-Processing-Time (SRPT) policy is optimal for … minimizing mean response time in a single-server system with online arrivals. Unfortunately, SRPT scheduling requires users to … approach for inducing the informed users into self- scheduling themselves according to (an approximation of) SRPT while not …

Persistent link: https://www.econbiz.de/10009441285

Cost Estimating Certifications Offered by Professional Societies in the United States and Abroad

Remer, Donald S.; Ahle, Karen; Alley, Kevin; Silny, John; … - 2007

Many projects in industry and government go over budget and schedule. In most engineering economics courses, the emphasis is on how to compare alternatives and learn about time value of money and interest and inflation rates. The students are usually given the costs and asked to compare the...

Persistent link: https://www.econbiz.de/10009468732

A cell-based simultaneous route and departure time choice model with elastic demand

Szeto, WY; Lo, HK - 2004

This paper develops a cell-based formulation for the simultaneous route and departure time choice problem with elastic demands through a variational inequality problem (VIP). This formulation follows the ideal Dynamic User Optimal (DUO) route and departure time choice principle and encapsulates...

Persistent link: https://www.econbiz.de/10009471364

Can Flexibility Be Constraining?

Pinker, E; Lee, HH; Berman, O - 2010

Five Common Options For Workforce Flexibility And Their Robustness Under Uncertain Demand Are Investigated. In The First Stage, A Firm Makes Optimal Staffing Decisions According To Estimated Demand And A Given Workforce Flexibility Policy. In The Second Stage, It Reallocates Its Workforce To...

Persistent link: https://www.econbiz.de/10009471390