Ara es mostren els items 47024-47043 de 244457

    • Constraining the neutrino magnetic dipole moment from white dwarf pulsations 

      Corsico, Alejandro H.; Althaus, Leandro G.; Miller Bartolami, Marcelo M.; Kepler, S.O.; García-Berro Montilla, Enrique (2014-08-01)
      Article
      Accés obert
      Pulsating white dwarf stars can be used as astrophysical laboratories to constrain the properties of weakly interacting particles. Comparing the cooling rates of these stars with the expected values from theoretical models ...
    • Constraining the origin of the short timescales X-ray variability of the Seyfert galaxy NGC 7469 

      Núñez Arilla, Carlos (Universitat Politècnica de Catalunya, 2020-06)
      Treball Final de Grau
      Accés obert
      Realitzat a/amb:   Nicolaus Copernicus Astronomical Center
      This bachelor thesis is a small part of a much larger project related to the study of the X-ray properties of the active galactic nucleus (AGN) NGC 7469. In this report I will focus on the analysis of the short-timescales ...
    • Constraining the temporal variations of Ra isotopes and Rn in the groundwater end-member: implications for derived SGD estimates 

      Cerdà Domènech, Marc; Rodellas, Valentí; Folch Sancho, Albert; Garcia Orellana, Jordi (2017-10)
      Article
      Accés obert
      Submarine groundwater discharge (SGD) has been recognized as an important supplier of chemical compounds to the ocean that may influence coastal geochemical cycles. Radium isotopes (223Ra, 224Ra, 226Ra,228Ra) and radon ...
    • Constraint algorithm for extremals in optimal control problems 

      Barbero Liñán, María; Muñoz Lecanda, Miguel Carlos (2007-07-27)
      Article
      Accés obert
      A characterization of different kinds of extremals of optimal control problems is given if we take an open control set. A well known constraint algorithm for implicit differential equations is adapted to the study of ...
    • Constraint algorithm for k-presymplectic Hamiltonian systems. Application to singular field theories 

      Gràcia Sabaté, Francesc Xavier; Martín Grillo, Rubén; Román Roy, Narciso (2009-03-10)
      Working paper
      Accés obert
      The k-symplectic formulation of field theories is especially simple, since only tangent and cotangent bundles are needed in its description. Its defining elements show a close relationship with those in the symplectic ...
    • Constraint algorithm for k-presymplectic hamiltonian systems: application to singular field theories 

      Gràcia Sabaté, Francesc Xavier; Martín Grillo, Rubén; Román Roy, Narciso (World Scientific and Engineering Academy and Society (WSEAS), 2009-08-01)
      Article
      Accés obert
      The k-symplectic formulation of field theories is specially simple, since only tangent and cotangent bundles are needed in its description. Its defining elements show a close relationship with those in the symplectic formulation ...
    • Constraint algorithm for singular field theories in the k-cosymplectic framework 

      Gràcia Sabaté, Francesc Xavier; Rivas Guijarro, Xavier; Román Roy, Narciso (American Institute of Mathematical Sciences, 2020-03-15)
      Article
      Accés obert
      The aim of this paper is to develop a constraint algorithm for singular classical field theories in the framework of k-cosymplectic geometry. Since these field theories are singular, we need to introduce the notion of ...
    • Constraint algorithm for singular k-cosymplectic field theories 

      Rivas Guijarro, Xavier (Universitat Politècnica de Catalunya, 2015-10)
      Projecte Final de Màster Oficial
      Accés obert
      The main objective of this thesis is to develop a constraint algorithm for singular k-cosymplectic field theories.
    • Constraint handling within MOEA/D through an additional scalarizing function 

      Zapotecas Martínez, Saúl; Ponsich, Antonin Sebastien (2020)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The Multi-Objective Evolutionary Algorithm based on Decomposition (MOEA/D) has shown high-performance levels when solving complicated multi-objective optimization problems. However, its adaptation for dealing with constrained ...
    • Constraint identification and integration procedures in multi-level hierarchical systems 

      Dombayci, Canan; Capón García, Elisabet; Muñoz, Edrisi; Espuña Camarasa, Antonio (Elsevier, 2017-11-09)
      Article
      Accés restringit per política de l'editorial
      Within the context of decision-support tools based on mathematical programming techniques, this contribution presents a procedure for constraints identification and classification. The aim is to manage their transformation ...
    • Constraint Programming based Local Search for the Vehicle Routing Problem with Time Windows 

      Sala Reixach, Joan (Universitat Politècnica de Catalunya / Karlsruher Institut für Technology, 2012-09-30)
      Projecte/Treball Final de Carrera
      Accés obert
      El projecte es centra en el "Vehicle Routing Problem with Time Windows". Explora i testeja un mètode basat en una formulació del problema en termes de programació de restriccions. Implementa un mètode de cerca local amb ...
    • Constraint satisfaction as global optimization 

      Meseguer González, Pedro; Larrosa Bondia, Francisco Javier (1995-06)
      Report de recerca
      Accés obert
      We present an optimization formulation for discrete binary CSP, based on the construction of a continuous function A(P) whose global maximum represents the best possible solution for that problem. By the best possible ...
    • Constraint symmetries 

      Mestres Ramon, Pol (2017)
      Report de recerca
      Accés obert
      Constraint Symmetries have been suggested as an appropriate subgroup of solution symmetries easier to be more easily found that the complete group of symmetries. The concept is analyzed, and it becomes clear that a knowledge ...
    • Constraint-handling techniques within differential evolution for solving process engineering problems 

      Cantú Medrano, Victor Hugo; Azzaro-Pantel, Catherine; Ponsich, Antonin Sebastien (2021-09)
      Article
      Accés obert
      A wide range of process systems engineering problems involve an optimisation formulation that is difficult to solve due to sources of discontinuity and non-convexity and a high number of constraints to satisfy. Differential ...
    • Constraints and variability of complementarity determining regions in antibodies 

      Lepore, Alba (Barcelona Supercomputing Center, 2018)
      Text en actes de congrés
      Accés obert
    • Constraints for behavioural specifications 

      Orejas Valdés, Fernando; Nivela Alós, M. Pilar Brígida (1990)
      Report de recerca
      Accés obert
      Behavioural specifications with constraints for the incremental development of algebraic specifications are presented. The behavioural constraints correspond to the completely defined subparts of a given incomplete behavioural ...
    • Constraints in azimuth resolution by refocusing slowly moving targets from single-look complex SAR vignettes 

      Yam Ontiveros, Luis Eduardo; Mallorquí Franquet, Jordi Joan; Rius Casals, Juan Manuel (VDE Conference Publications, 2014)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Accessing the raw data of spaceborne SAR systems is not always possible to refocus blurred SAR signatures of vessels. Instead, the single-look complex (SLC) data is usually more available, but since the vessel motion can ...
    • Constraints on LISA pathfinder's self-gravity: design requirements, estimates and testing procedures 

      Armano, M.; Audley, H.; Auger, G.; Baird, J.; Binetruy, P.; Born, M.; Bortoluzzi, D.; Brandt, N.; Bursi, A.; Caleno, M.; Cavalleri, A.; Cesarini, A.; Cruise, M.; Danzmann, K.; Ramos Castro, Juan José (2016-11-08)
      Article
      Accés obert
      LISA Pathfinder satellite was launched on 3 December 2015 toward the Sun–Earth first Lagrangian point (L1) where the LISA Technology Package (LTP), which is the main science payload, will be tested. LTP achieves measurements ...
    • Constraints on the automorphism group of a curve 

      González Rovira, Josep (2017-01-01)
      Article
      Accés obert
      For a curve of genus > 1 defined over a finite field, we present a sufficient criterion for the non-existence of automorphisms of order a power of a rational prime. We show how this criterion can be used to determine the ...
    • Constraints on the dipole photon strength for the odd uranium isotopes 

      Berthoumieux, Eric; Dupont, Emmeric; Gunsing, Frank; Serot, Olivier; Aberle, O.; Alcayne Aicua, Víctor; Amaducci, Simone; Andrzejewski, Józef; Audouin, Ludmila; Bécares, Vicente; Babiano Suárez, Víctor; Bacak, Michael; Barbagallo, Massimo; Billowes, J.; Bosnar, Damir; Caballero Ontanaya, Luis; Calviño Tavares, Francisco; Calviani, Marco; Cano Ott, Daniel; Casanovas Hoste, Adrià; Chiaveri, E.; Colonna, Nicola; Cortés Rossell, Guillem Pere; Cortés Giraldo, Miguel Antonio; Cosentino, Luigi; Cristallo, Sergio; Damone, Lucia Anna; Tarifeño Saldivia, Ariel Esteban (American Physical Society, 2022-02-01)
      Article
      Accés obert
      Nuclear level densities (NLDs) and photon strength functions (PSFs), also called ¿ -ray or radiation strength functions, represent average properties of the nucleus in the regime of excitation where individual levels and ...