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An innovative data structure to handle the geometry of nesting problems
(2017-12-17)
As in many other combinatorial optimisation problems, research on nesting problems (aka irregular packing problems) has evolved around the dichotomy between continuous (time consuming) and discrete (memory consuming) ...
New classes of spatial central configurations for the n+3-body problem
(PERGAMON-ELSEVIER SCIENCE LTD, 2011)
In this paper, we show the existence of new families of spatial central configurations for the n + 3-body problem, n >= 3. We study spatial central configurations where n bodies are at the vertices of a regular n-gon T and ...
Heuristics for two-dimensional knapsack and cutting stock problems with items of irregular shape
(Pergamon-elsevier Science LtdOxfordInglaterra, 2012)
Internal Architecture and Population Size of Acromyrmex subterraneus molestans (Hymenoptera, Formicidae) Nests: Comparison Between a Rural and an Urban Area
(California State University, 2011-01-01)
Ant nests vary in their depth and internal complexity. They can be shallow or reach seven meters down into the soil, with many chambers connected by tunnels. In the case of leaf-cutting ants, the nest protects the colony ...
Internal Architecture and Population Size of Acromyrmex subterraneus molestans (Hymenoptera, Formicidae) Nests: Comparison Between a Rural and an Urban Area
(California State University, 2011-01-01)
Ant nests vary in their depth and internal complexity. They can be shallow or reach seven meters down into the soil, with many chambers connected by tunnels. In the case of leaf-cutting ants, the nest protects the colony ...
Internal architecture and population size of Acromyrmex subterraneus molestans (Hymenoptera, Formicidae) nests: Comparison between a rural and an urban area
(2011-11-30)
Ant nests vary in their depth and internal complexity. They can be shallow or reach seven meters down into the soil, with many chambers connected by tunnels. In the case of leaf-cutting ants, the nest protects the colony ...
Mixed integer quadratically-constrained programming model to solve the irregular strip packing problem with continuous rotations
(Springer, 2018-09-01)
The irregular strip packing problem consists of cutting a set of convex and non-convex two-dimensional polygonal pieces from a board with a fixed height and infinite length. Owing to the importance of this problem, a large ...
Optimizing the inventorying and distribution of chemical fluids: An innovative nested column generation approach
(Pergamon-Elsevier Science Ltd, 2018-11)
Vendor-managed-inventory is a successful business practices based on the cooperation between a supplier and its customers in which demand and inventory information from the customers are shared with the supplier. This ...