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Article
GRASP for Seam Drawing in Mosaicking of Aerial Photographic Maps
Commercial aerial photographic maps are often so large that it is necessary to produce one map from two or more photographs, which are combined two at a time in a process called mosaicking. The objective is to...
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Article
High efficiency and reusability of iridium complexes adsorbed in montmorillonite clay on catalytic hydrogenation of imines
Heterogenised homogeneous catalytic hydrogenation of aldimines by removable and reusable immobilised iridium complexes on montmorillonite clay.
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Article
The stochastic generalised assignment problem with Bernoulli demands
This paper deals with the Stochastic Generalised Assignment problem. It presents several models for the special case when demands are independent and Bernoulli distributed. Each model designs an assignment str...
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Chapter
Hydroformylation in Organic Synthesis
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Article
Even Cycles and Perfect Matching Problems with Side Constraints
We study two different types of graphs that contain even cycles and, possibly, some chords. The objective is to analyze some properties of these types of graphs that can be used to solve perfect matching optim...
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Article
Filtering Policies in Loss Queuing Network Location Problems
In this paper we deal with two stationary loss queuing network location models. We analyze the influence of filtering policies on the locational aspect of the problems. We assume that requests for service are ...
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Article
Thek-centrum shortest path problem
Thek-Centrum Shortest Path Problem (kCSP[s, t]) is to minimize the sum of thek longest arcs in any (simple)s−t path containing at leastk arcs, wherek is a positive integer.kCSP is introduced and is shown to be NP...
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Article
Lagrangean relaxation for the capacitated hub location problem with single assignment
This article considers the capacitated hub location problem with single assignment. We propose a Lagrangean relaxation to obtain tight upper and lower bounds. The Lagrangean function that we formulate exploits...
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Chapter and Conference Paper
Flood Analysis: On the Automation of the Geomorphological-Historical Method
Different methods to assess the flood return period are available in the literature. The hydrological-hydraulic approaches, among the best-known quantitative methods, oversimplify the complex characteristics o...
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Article
Symbiotic nitrogen fixation and nitrate reduction in two peanut cultivars with different growth habit and branching pattern structures
We have investigated the response of two peanut cultivars (TEGUA and UTRE) with different growth habits and branching pattern structures to different nitrogen (N) sources, namely, N-fertilizer or N2 made availabl...
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Article
GEVA: geometric variability-based approaches for identifying patterns in data
This paper, arising from population studies, develops clustering algorithms for identifying patterns in data. Based on the concept of geometric variability, we have developed one polythetic-divisive and three ...
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Article
The Single Period Coverage Facility Location Problem: Lagrangean heuristic and column generation approaches
In this paper we introduce the Single Period Coverage Facility Location Problem. It is a multi-period discrete location problem in which each customer is serviced in exactly one period of the planning horizon....
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Article
Lagrangean bounds for the optimum communication spanning tree problem
This paper considers the Optimum Communication Spanning Tree Problem. An integer programming formulation that yields tight LP bounds is proposed. Given that the computational effort required to obtain the LP b...
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Article
A computational comparison of several formulations for the multi-period incremental service facility location problem
The Multi-period Incremental Service Facility Location Problem, which was recently introduced, is a strategic problem for timing the location of facilities and the assignment of customers to facilities in a mu...
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Article
Integrating statistical information concerning historical floods: ranking and interval return period estimation
The importance of the historical information in flood analysis has previously been underlined. In this context, we present an integral methodology aimed at the establishment of return periods of different floo...
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Article
Preface: Operations research and systems (ALIO/INFORMS Joint International Meeting)
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Article
GRASP and Path Relinking for the Clustered Prize-collecting Arc Routing Problem
The Clustered Prize-collecting Arc Routing Problem is an arc routing problem where each demand edge is associated with a profit which is collected once if the edge is serviced, independently of the number of t...
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Article
On discrete optimization with ordering
This paper studies discrete optimization problems with ordering requirements. These problems are formulated on general discrete sets in which there exists an ordering on their elements together with a cost fun...
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Article
Screen-printed electrode-based electrochemical detector coupled with in-situ ionic-liquid-assisted dispersive liquid–liquid microextraction for determination of 2,4,6-trinitrotoluene
A novel method is reported, whereby screen-printed electrodes (SPELs) are combined with dispersive liquid–liquid microextraction. In-situ ionic liquid (IL) formation was used as an extractant phase in the micr...
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