Helber Stefan

Stefan Helber

Information about the author Stefan Helber will soon be added to the site.
Found 12 papers in total
Scheduling resource-constrained projects with a flexible project structure
Scheduling resource-constrained projects with a flexible project structure
2015
In projects with a flexible project structure, the activities that must be scheduled...
Dynamic capacitated lot sizing with random demand and dynamic safety stocks
Dynamic capacitated lot sizing with random demand and dynamic safety stocks
2013
We present a stochastic version of the single‐level, multi‐product...
Decision support for rehabilitation hospital scheduling
Decision support for rehabilitation hospital scheduling
2012
We present a detailed analysis of the patient and resource scheduling problem in...
Using linear programming to analyze and optimize stochastic flow lines
Using linear programming to analyze and optimize stochastic flow lines
2011
This paper presents a linear programming approach to analyze and optimize flow lines...
Dynamic capacitated lot-sizing problems: a classification and review of solution approaches
Dynamic capacitated lot-sizing problems: a classification and review of solution approaches
2010
This paper presents a review of four decades of research on dynamic lot-sizing with...
A fix-and-optimize approach for the multi-level capacitated lot sizing problem
A fix-and-optimize approach for the multi-level capacitated lot sizing problem
2010
This paper presents an optimization-based solution approach for the dynamic...
Profit-oriented shift scheduling of inbound contact centers with skills-based routing, impatient customers, and retrials
Profit-oriented shift scheduling of inbound contact centers with skills-based routing, impatient customers, and retrials
2009
This paper presents a profit-oriented shift scheduling approach for inbound contact...
A new decomposition approach for non-cyclic continuous material flow lines with a merging flow of material
A new decomposition approach for non-cyclic continuous material flow lines with a merging flow of material
2004
We extend the decomposition approaches for flow lines with unreliable machines and...
Cash-flow oriented buffer allocation in stochastic flow lines
Cash-flow oriented buffer allocation in stochastic flow lines
2001
This paper defines the problem of buffer space allocation in flow lines as an...
Approximate analysis of unreliable transfer lines with splits in the flow of material
Approximate analysis of unreliable transfer lines with splits in the flow of material
2000
This paper presents a Markov process model and an approximate decomposition technique...
Decomposition of unreliable assembly/disassembly networks with limited buffer capacity and random processing times
Decomposition of unreliable assembly/disassembly networks with limited buffer capacity and random processing times
1998
An assembly/disassembly network is a manufacturing system in which machines perform...
A heuristic for dynamic multi-item multi-level capacitated lotsizing for general product structures
A heuristic for dynamic multi-item multi-level capacitated lotsizing for general product structures
1994
This paper presents an heuristic for the multi-item, multi-level dynamic lotsizing...
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