Exploració per tema "Classificació AMS::90 Operations research, mathematical programming::90B Operations research and management science"
Ara es mostren els items 1-20 de 193
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A capacitated commodity trading model with market power
(Universitat Politècnica de Catalunya, 2008-02)
Projecte Final de Màster Oficial
Accés obertThis Master Thesis proposes an analytical model of commodity trading in the presence of market power, which is new to the literature. We establish the rational behavior of traders between two markets and derive price ... -
A case study for the assessment of a dynamic passenger ride sharing mobility service
(2017)
Text en actes de congrés
Accés restringit per política de l'editorialSustainable mobility is not merely a technological question. While automotive technology will be part of the solution, it will also be combined with a paradigm shift from car ownership to vehicle usage, which itself will ... -
A characterization of weighted simple games based on pseudoweightings
(2020-09-14)
Article
Accés obertThe paper provides a new characterization of weighted games within the class of simple games. It is based on a stronger form of the point-set-additive pseudoweighting property of simple games. The characterization obtained ... -
A constellation of horrors: analysis and visualization of the #Cuéntalo movement
(Association for Computing Machinery (ACM), 2019)
Text en actes de congrés
Accés obertIn this work, we analyze content and structure of the Twitter trending topic #cuentalo with the purpose of providing a visualization of the movement. A supervised learning methodology is used to train the classifying ... -
A DUE based bilevel optimization approach for the estimation of time sliced OD matrices
(2014)
Text en actes de congrés
Accés obertTraffic management applications are supported by dynamic models fed with realistic real-time demand matrices in order to find efficient solutions in the short-term horizon. OD matrices have to be estimated from historic ... -
A dynamic estimation of passenger OD matrices based on space-state models
(2013)
Text en actes de congrés
Accés obertDynamic OD passenger matrices must be taken into account when designing robust public transport systems. The adjustment of these matrices is examined using passenger counts provided by a space-state model formulation in a ... -
A flexoelectric microelectromechanical system on silicon
(2016)
Article
Accés obertFlexoelectricity allows a dielectric material to polarize in response to a mechanical bending moment and, conversely, to bend in response to an electric field. Compared with piezoelectricity, flexoelectricity is a weak ... -
A fuzzy logic approach to assembly line
(Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 2005)
Article
Accés obertThis paper deals with the use of fuzzy set theory as a viable alternative method for modelling and solving the stochastic assembly line balancing problem. Variability and uncertainty in the assembly line balancing ... -
A fuzzy-evolutionary seller agent for an automatic negotiation framework on e-commerce
(Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 2006)
Article
Accés obertThe business achievement via e-commerce is getting more important at the present time. E-commerce implies several activities. One of the most significant activity is the consummation of negotiations between sellers and ... -
A local multiple proper generalized decomposition based on the partition of unity
(John Wiley & sons, 2019-10-12)
Article
Accés obertIt is well known that model order reduction techniques that project the solution of the problem at hand onto alow-dimensional subspace present difficulties when this solution lies on a non-linear manifold. To overcomethese ... -
A method of multiobjective decision making using a vector value function
(Institut d'Estadística de Catalunya, 1994)
Article
Accés obertA decision situation with partial information on preferences by means of a vector value function is assumed. The concept of minimum value dispersion solution as a reference point joined with a pseudodistance function from ... -
A mixed-integer linear program for real-time train platforming management
(Elsevier, 2022-03-11)
Article
Accés obertUnexpected events may perturb operations and generate conflicts that must be addressed promptly to limit delay propagation and other negative impacts on the network. The real-time railway traffic management problem deals ... -
A model and an algorithm for the grouping problem in telecom networks
(Universitat Politècnica de Catalunya. Centre de Càlcul, 1991)
Article
Accés obertThis paper deals with the so called grouping problem which arises in telecommunication network optimization when transmission equipment with a certain hierarchy is used. It is shown how this problem is embedded in the ... -
A model for opinion agreement and confidence in multi-expert multi-criteria decision making
(Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 2004)
Article
Accés obertIn multi-expert multi-criteria decision making problems, we often have to deal with different opinions, different importance of criteria and experts, missing data, unexpressed opinions and experts who are not fully ... -
A model for the simultaneous selection of bus lines and frequency setting problems in the expansion of public transit systems
(Elsevier, 2020-03-02)
Article
Accés obertWhen expanding an existing public transport system a common practice consists of defining a set of candidate new lines andfrom them, choose those that will revert into a greater increase of the system’s performance while ... -
A production planning problem in FMS
(Universitat Politècnica de Barcelona. Centre de Càlcul, 1987)
Article
Accés obertWe present in this work a hierarchical approach for generating alternatives for production planning in a generic floor shop problem within the environment of Flexible Manufacturing Systems (hereafter, FMS). Briefly, the ... -
A Proper Generalized Decomposition (PGD) approach to crack propagation in brittle materials: with application to random field material properties
(Springer, 2020-02)
Article
Accés obertUnderstanding the failure of brittle heterogeneous materials is essential in many applications. Heterogeneities in materialproperties are frequently modeled through random fields, which typically induces the need to solve ... -
A simheuristic for routing electric vehicles with limited driving ranges and stochastic travel times
(Institut d'Estadística de Catalunya, 2019-06-11)
Article
Accés obertGreen transportation is becoming relevant in the context of smart cities, where the use of electric vehicles represents a promising strategy to support sustainability policies. However the use of electric vehicles shows ... -
A simulation framework for real-time assessment of dynamic ride sharing demand responsive transportation models
(Institute of Electrical and Electronics Engineers (IEEE), 2016)
Text en actes de congrés
Accés obertSustainable mobility is not only a technological question, automotive technology will be part of the solution combined with a paradigm shift from car ownership to vehicle usage, and the application of Information and ... -
A staggered high-dimensional Proper Generalised Decomposition for coupled magneto-mechanical problems with application to MRI scanners
(2020-10-01)
Article
Accés obertManufacturing new Magnetic Resonance Imaging (MRI) scanners represents a computational challenge to industry, due to the large variability in material parameters and geometrical configurations that need to be tested during ...
