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Minimising the number of gap-zeros in binary matrices
Chakhlevitch, Konstantin; Glass, Celia A.; Shakhlevich, … - In: European Journal of Operational Research 229 (2013) 1, pp. 48-58
linear-time in the number of rows if the number of columns is constant, and two constructive heuristics to tackle instances … with an arbitrary number of columns. The heuristics use a novel solution representation based upon row sequencing. In our … computational study, all heuristic solutions are either optimal or close to an optimum. One of the heuristics is particularly …
Persistent link: https://www.econbiz.de/10010664718
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Primary energy savings through thermal storage in district heating networks
Verda, Vittorio; Colella, Francesco - In: Energy 36 (2011) 7, pp. 4278-4286
District heating is an efficient way to provide heat to residential, tertiary and industrial users. Heat is often produced by CHP (combined heat and power) plants, usually designed to provide the base thermal load (40–50% of the maximum load) while the rest is provided by boilers. The use of...
Persistent link: https://www.econbiz.de/10010811808
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Optimal Sizing of Battery Storage Systems for Industrial Applications when Uncertainties Exist
Carpinelli, Guido; Fazio, Anna Rita di; Khormali, Shahab; … - In: Energies 7 (2014) 1, pp. 130-149
Demand response (DR) can be very useful for an industrial facility, since it allows noticeable reductions in the electricity bill due to the significant value of energy demand. Although most industrial processes have stringent constraints in terms of hourly active power, DR only becomes...
Persistent link: https://www.econbiz.de/10010729059
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Optimization Models and Methods for Demand-Side Management of Residential Users: A Survey
Barbato, Antimo; Capone, Antonio - In: Energies 7 (2014) 9, pp. 5787-5824
The residential sector is currently one of the major contributors to the global energy balance. However, the energy demand of residential users has been so far largely uncontrollable and inelastic with respect to the power grid conditions. With the massive introduction of renewable energy...
Persistent link: https://www.econbiz.de/10011030913
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Optimisation of Infrastructure Location
Samaniego, Luis; Treuner, Peter - In: Review of Regional Research 26 (2006) 2, pp. 119-145
In dem vorliegenden Beitrag wird ein Modell für die effiziente Allokation von Infrastruktureinrichtungen in einer Region entwickelt. Die Komplexität des Allokationsproblems ergibt sich nicht nur durch die Vielzahl der Kombinationsmöglichkeiten, sondern auch durch die immanenten...
Persistent link: https://www.econbiz.de/10010994682
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Cost optimisation in freight distribution with cross-docking: the N-echelon location routing problem
Gonzalez-Feliu, Jesus - HAL - 2010
Freight transportation constitutes one of the main activities that influences economy and society, as it assures a vital link between suppliers and customers and it represents a major source of employment. Multi-echelon distribution is one of the most common strategies adopted by the...
Persistent link: https://www.econbiz.de/10010552597
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Comments on knapsack problems with a penalty
Iida, Hiroshi - Department of Economics, Otaru University of Commerce - 2007
The classical binary knapsack problem has numerous generalisations in relation to not only a capacity constraint but also an objective function. In 2006, two knapsack problems have coincidentally been proposed, both of which have an extension of the objective function paying the penalty. This...
Persistent link: https://www.econbiz.de/10010604745
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Editorial
Sifaleras, Angelo; Papathanasiou, Jason; Demange, Marc - In: International Journal of Applied Management Science 4 (2012) 3, pp. 219-223
This editorial describes the special issue on 'New combinatorial optimisation models for decision-making' of the International Journal of Applied Management Science (IJAMS). It provides a short review of combinatorial optimisation applications in decision-making, specifies the aim of the special...
Persistent link: https://www.econbiz.de/10010669466
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A heuristic solution framework for the resource constrained (multi-)project scheduling problem with sequence-dependent transfer times
Krüger, Doreen; Scholl, Armin - Wirtschaftswissenschaftliche Fakultät, … - 2007
We consider the problem of scheduling multiple projects subject to joint resource constraints. Most approaches proposed in the literature so far are based on the unrealistic assumption that resources can be transferred from one project to the other without any expense in time or cost. In order...
Persistent link: https://www.econbiz.de/10005785942
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An adaptive algorithm for the knapsack problem: perturbation of the profit or weight of an arbitrary item
Hifi, Mhand; Mhalla, Hedi; Sadfi, Slim - In: European Journal of Industrial Engineering 2 (2008) 2, pp. 134-152
This paper solves the binary single-constrained Knapsack Problem (KP) and undertakes a sensitivity analysis of its optimum solution. Given a knapsack of capacity c, and a set of n items, with each item j, j = 1,…,n, characterised by a weight wj and a profit pj, the binary...
Persistent link: https://www.econbiz.de/10008563657