Journal: OR Spektrum

Found 334 papers in total
A heuristic for multiple container loading problems
A heuristic for multiple container loading problems
2000,
The paper presents a heuristic for multiple container loading problems. The method is...
TOPOS: A new constructive algorithm for nesting problems
TOPOS: A new constructive algorithm for nesting problems
2000,
In this paper we present a new constructive algorithm for nesting problems. The layout...
Growth-oriented portfolio selection based on stochastic holding periods
Growth-oriented portfolio selection based on stochastic holding periods
2000,
Based on the concept of time optimal portfolio selection, a specific model is...
The economic lot scheduling problem – survey and linear programming-based method
The economic lot scheduling problem – survey and linear programming-based method
1999,
In order to solve the ELSP (Economic Lot Scheduling Problem) you can find three...
An exponential neighborhood for a one-machine batching problem
An exponential neighborhood for a one-machine batching problem
1999,
In this paper we consider a one-machine batching problem which is a combination of a...
A 2-machine sequencing problem with machine repetition and overlapping processing times
A 2-machine sequencing problem with machine repetition and overlapping processing times
1999,
This paper is concerned with a two-machine sequencing problem with overlapping...
Optimal blending in sausage production – a case study
Optimal blending in sausage production – a case study
1999,
A traditional OR technique (linear programming) has been joined with modern...
A note on the exact replication of a stock index with a multiplier rounding method
A note on the exact replication of a stock index with a multiplier rounding method
1999,
For full replication of a stock index one has to multiply the weights of the index...
A two-machine permutation flow shop scheduling problem with buffers
A two-machine permutation flow shop scheduling problem with buffers
1998,
Problems with ‘blocking’ (limited intermediate storage space) are used...
A tabu search algorithm for weakly heterogeneous container loading problems
A tabu search algorithm for weakly heterogeneous container loading problems
1998,
The paper presents a tabu search algorithm (TSA) for weakly heterogeneous container...
Planning stability under (s, S) inventory control rules
Planning stability under (s, S) inventory control rules
1998,
The problem of planning instablity caused by new and actualized data in material...
Explanation of observed high implicit discount rates of conservation investments using the theory of ‘investment under uncertainty’
Explanation of observed high implicit discount rates of conservation investments using the theory of ‘investment under uncertainty’
1998,
A well documented observation is that consumers (and also firms) use high implicit...
Optimal scrap combination for steel production
Optimal scrap combination for steel production
1998,
In steel production, scrap metal is used for cooling the enormous quantity of heat...
Optimal R&D investments of the firm
Optimal R&D investments of the firm
1998,
This paper examines irreversible decisions on innovative activities where it takes...
Estimation of prospective recycling costs of industrial products with the help of fuzzy linear programming
Estimation of prospective recycling costs of industrial products with the help of fuzzy linear programming
1998,
Following the new German recycling and waste management act, producers are responsible...
Quality of group decisions
Quality of group decisions
1998,
This article develops a model for calculating the quality of group decisions judged by...
Fuzzy retrieval in case-based decision support systems
Fuzzy retrieval in case-based decision support systems
1998,
This paper describes a technique which determines suitable product offers from data...
Modeling returns of merchandise in an inventory system
Modeling returns of merchandise in an inventory system
1998,
Returns of merchandise occur commonly in the retail and rental businesses. This paper...
Multicriteria capability indices
Multicriteria capability indices
1998,
Introduction of modern quality management systems in branches as well as between...
Inverse maximum capacity problems
Inverse maximum capacity problems
1998,
Let E be a finite set, ℱ be a family of subsets of E and &Cmacr; be a capacity...
On the analysis of single server finite queue with state dependent arrival and service processes: M(n)/G(n)/1/K
On the analysis of single server finite queue with state dependent arrival and service processes: M(n)/G(n)/1/K
1998,
This paper discusses the analysis of a single server finite queue with Poisson arrival...
qobj modeling: A new approach in discrete event simulation
qobj modeling: A new approach in discrete event simulation
1998,
This paper deals with a new discrete event simulation modeling concept, called qobj ,...
Using the frontier production function and minimax approaches in measuring productive efficiency: Critical remarks
Using the frontier production function and minimax approaches in measuring productive efficiency: Critical remarks
1998,
This paper shows that Aigner and Chu's frontier production function (FPF) method is,...
Reachability of locational Nash equilibria
Reachability of locational Nash equilibria
1998,
This paper examines the location of duopolists on a tree. Given parametric prices, we...
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