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Inventory based dispatching of automated guided vehicles on container terminals
Briskorn, Dirk; Drexl, Andreas; Hartmann, Sönke - 2005
allow for accurate planning. By means of simulation, we then analyze the different approaches. We show that the inventory …
Persistent link: https://www.econbiz.de/10011558807
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Generating scenarios for simulation and optimization of container terminal logistics
Hartmann, Sönke - 2002
algorithm that computes scenarios on the basis of these parameters. The scenarios can be used as input data for simulation … logistics such as berth planning and crane scheduling. The generator discussed here has been developed within the simulation … project at the HHLA Container-Terminal Altenwerder in Hamburg, Germany. Nevertheless, its structure is general enough to be …
Persistent link: https://www.econbiz.de/10011558784
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A general framework for scheduling equipment and manpower on container terminals
Hartmann, Sönke - 2002
In this paper, we propose a general model for various scheduling problems that occur in container terminal logistics. The scheduling model consists of the assignment of jobs to resources and the temporal arrangement of the jobs subject to precedence constraints and sequence-dependent setup...
Persistent link: https://www.econbiz.de/10011558786
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Pricing the generalized assignment problem
Drexl, Andreas; Jørnsten, Kurt - 2007
The generalized assignment problem (GAP) examines the maximum profit assignment of jobs to processors such that each job is assigned to precisely one processor subject to capacity restrictions on the processors. Due to the fact that the GAP is an NP-hard integer program dual prices are not...
Persistent link: https://www.econbiz.de/10011558833
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Panel estimation of state dependent adjustment when the target is unobserved
von Kalckreuth, Ulf - 2008
Understanding adjustment processes has become central in economics. Empirical analysis is fraught with the problem that the target is usually unobserved. This paper develops, simulates and applies GMM methods for estimating dynamic adjustment models in a panel data context with partially...
Persistent link: https://www.econbiz.de/10010295881
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Stochastic frontier analysis by means of maximum likelihood and the method of moments
Behr, Andreas; Tente, Sebastian - 2008
of the parametric assumptions. But simulation results obtained for the half normal model indicate that a method of … not strongly dominating noise (Coelli, 1995). In this paper we provide detailed simulation results comparing the two … estimation approaches for both the half-normal and the exponential approach to inefficiency. Based on the simulation results we …
Persistent link: https://www.econbiz.de/10010298775
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Stochastic Dominance: Convexity and Some Efficiency Tests
Lizyayev, Andrey M. - 2009
This paper points out the importance of Stochastic Dominance (SD) efficient sets being convex. We reviewclassic convexity and efficient set characterization results on SD efficiency of a given portfolio relative to adiversified set of assets and generalize them in the following aspects. First,...
Persistent link: https://www.econbiz.de/10010325820
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Stochastische Unternehmensmodelle als Kern innovativer Ratingsysteme
Blum, Ulrich; Gleißner, Werner; Leibbrand, Frank - 2005
and a stochastic simulation model of enterprise development. The results show that the method used is superior to …
Persistent link: https://www.econbiz.de/10010269950
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Impact of service policies on terminal gate efficiency: A simulation approach
Chamchang, Panida; Niyomdecha, Hussen - In: Cogent Business & Management 8 (2021) 1, pp. 1-18
simulation model was developed to analyze the queueing performance: truck queue length and gate waiting time. Scenarios analysis … simulation results confirm that a gate-sharing policy can alleviate congestion at a certain truck arrival rate. The method of …
Persistent link: https://www.econbiz.de/10012657420
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Influence of drayage patterns on truck appointment systems
Lange, Ann-Kathrin; Kühl, Kristof Ole; Schwientek, … - 2018
simulation model. These drayage patterns vary in the percentages of transports between container terminals and container …
Persistent link: https://www.econbiz.de/10012143161