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WSC
2008
13 years 10 months ago
Simulation-based optimization for the quay crane scheduling problem
Maritime terminals of pure transhipment are emerging logistic realities in long-distance containerized trade. Here, complex activities of resource allocation and scheduling should...
Pasquale Legato, Rina Mary Mazza, Roberto Trunfio
ERSHOV
2009
Springer
14 years 2 months ago
On the Containment Problem for Queries in Conjunctive Form with Negation
Abstract. We consider the problem of query containment for conjunctive queries with safe negation property. A necessary and sufficient condition for two queries to be in containmen...
Victor Felea
WSCG
2000
117views more  WSCG 2000»
13 years 9 months ago
Solving Multiple Layer Containment Problems Using Iterative Methods
The footwear industry's need for an automatic containment algorithm is becoming increasingly important within the manufacturing process. Irregular containers, such as hides, ...
Nuno Marques, Pedro Capela, João Bernardo
EOR
2008
119views more  EOR 2008»
13 years 7 months ago
A General Vehicle Routing Problem
In this paper we study a rich vehicle routing problem incorporating various complexities found in real-life applications. The General Vehicle Routing Problem (GVRP) is a combined ...
Asvin Goel, Volker Gruhn
ICDT
2007
ACM
107views Database» more  ICDT 2007»
14 years 1 months ago
Some Algorithmic Improvements for the Containment Problem of Conjunctive Queries with Negation
Query containment is a fundamental problem of databases. Given two queries q1 and q2, it asks whether the set of answers to q1 is included in the set of answers to q2 for any datab...
Michel Leclère, Marie-Laure Mugnier