Ara es mostren els items 14342-14361 de 245841

    • An explicit expression of the first Liapunov and period constants with applications 

      Gasull Embid, Armengol; Guillamon Grabolosa, Antoni; Mañosa Fernández, Víctor (1996)
      Article
      Accés obert
      In this paper, we study systems in the plane having a critical point with pure imaginary eigenvalues, and we search for effective conditions to discern whether this critical point is a focus or a center; in the case of it ...
    • An explicit formulation for the retrieval of the overlap function in an elastic and Raman aerosol lidar 

      Comerón Tejero, Adolfo; Muñoz Porcar, Constantino; Rodríguez Gómez, Alejandro Antonio; Sicard, Michaël; Dios Otín, Víctor Federico; Gil Díaz, Cristina; Oliveira, Daniel Camilo Fortunato dos Santos; Rocadenbosch Burillo, Francisco (European Geosciences Union (EGU), 2023-06-15)
      Article
      Accés obert
      We derive an explicit (i.e., non-iterative) formula for the retrieval of the overlap function in an aerosol lidar with both elastic and Raman N2 and/or O2 channels used for independent measurements of aerosol backscatter ...
    • An explicit method for modeling lossy and dispersive transmission lines 

      Palà Schönwälder, Pere; Miró Sans, Joan Maria (Microwave Exhibitions and Publishers, 1993)
      Text en actes de congrés
      Accés obert
      In this paper, an explicit -non iterative- method for modeling lossy and dispersive transmission lines, allowing the inclusion of skin-effect parameters is described. This method, based on multipoint Padé approximation, ...
    • An explicit total Lagrangian Fragile Points Method for finite deformation of hyperelastic materials 

      Mountris, Konstantinos A.; Li, Mingjing; Schilling, Richard; Dong, Leiting; Atluri, Satya N.; Casals Gelpí, Alicia; Wurdemann, Helge (2023-06)
      Article
      Accés obert
      We present a novel meshless algorithm based on the Fragile Points Method (FPM) for hyperelastic materials undergoing finite deformation. In contrast to mesh-based methods, where mesh distortion may pose numerical challenges. ...
    • An explicit/implicit Runge–Kutta-based PFEM model for the simulation of thermally coupled incompressible flows 

      Martí, Julio Marcelo; Ryzhakov, Pavel (Springer, 2020-01)
      Article
      Accés obert
      A semi-explicit Lagrangian scheme for the simulation of thermally coupled incompressible flow problems is presented. The model relies on combining an explicit multi-step solver for the momentum equation with an implicit ...
    • An explicit–implicit finite element model for the numerical solution of incompressible Navier–Stokes equations on moving grids 

      Martí, Julio Marcelo; Ryzhakov, Pavel (2019-06)
      Article
      Accés obert
      In this paper an efficient mesh-moving Finite Element model for the simulation of the incompressible flow problems is proposed. The model is based on a combination of the explicit multi-step scheme (Runge–Kutta) with an ...
    • An Exploratory Multivariate Statistical Analysis to Assess Urban Diversity 

      Salazar Llano, Lorena; Rosas Casals, Martí; Ortego Martínez, María Isabel (2019-07-11)
      Article
      Accés obert
      Understanding diversity in complex urban systems is fundamental in facing current and future sustainability challenges. In this article, we apply an exploratory multivariate statistical analysis (i.e., Principal Component ...
    • An exploratory study of group-robot social interactions in a cultural center 

      Paillacho Chiluiza, Dennys Fabian; Angulo Bahón, Cecilio; Díaz Boladeras, Marta (2015)
      Comunicació de congrés
      Accés obert
      This article describes an exploratory study of social human-robot interaction with the experimental robotic platform MASHI. The experiences were carried out in La Bobila Cultural Center in Barcelona, Spain to study the visit
    • An exploratory study on participatory modelling in renewable energy cooperatives : Insights from the Vruchtenbuurt, The Hague 

      Lazar, Teodora-patricia (Universitat Politècnica de Catalunya, 2023-11-01)
      Projecte Final de Màster Oficial
      Accés obert
      Amidst the urgent push for a sustainable energy transition, The Netherlands is also undergoing a shift from a centralized to a decentralized energy system, emphasizing renewable energy sources such as wind turbines and ...
    • An extended flame index partitioning for partially premixed combustion 

      Illana, Enric; Mira Martínez, Daniel; Mura, Arnaud (Taylor and Francis, 2020)
      Article
      Accés obert
      Compared to partially premixed combustion (or combustion of non-homogeneous reactants in general), fully premixed and diffusion flames represent only two asymptotic limits of combustion modes. However, the deep knowledge ...
    • An extended formulation for the flexible short-term scheduling of multiproduct semicontinuos plants 

      Capón García, Elisabet; Ferrer Nadal, Sergio; Graells Sobré, Moisès; Puigjaner Corbella, Lluís (2009-01-05)
      Article
      Accés restringit per política de l'editorial
      Chemical plants are moving toward more-flexible environments, to adapt faster to market changes. For the sake of this flexibility, batch and continuous units might be integrated and operated along the same processing route ...
    • An extended matter bounce scenario: current status and challenges 

      Haro Cases, Jaume; Cai, Yi-Fu (2015-08-01)
      Article
      Accés obert
      As an alternative to the paradigm of slow roll inflation, we propose an extended scenario of the matter bounce cosmology in which the Universe has experienced a quasi-matter contracting phase with a variable background ...
    • An Extended study on an interference-insensitive switched capacitor CDC 

      Areekath, Lakshmi; Reverter Cubarsí, Ferran; George, Boby (2019-09-15)
      Article
      Accés restringit per política de l'editorial
      A new Switched Capacitor (SC) Capacitance-to-Digital Converter (CDC) is presented in this paper. Its output exhibits a high-level of insensitivity to interference, by virtue of the conversion mechanism itself. The proposed ...
    • An extended X-ray absorption fine structure study of the high-affinity cation binding site in the purple membrane 

      Sepulcre Sánchez, Francesc; Cladera, Josep; Garcia, J.; Proietti, Maria Grazia; Torres, Jaume; Padrós Morell, Esteve (1996-02)
      Article
      Accés restringit per política de l'editorial
    • An extension and an alternative characterization of May’s theorem 

      Freixas Bosch, Josep; Pons Vallès, Montserrat (Springer, 2021-03-14)
      Article
      Accés obert
      The context of this work is a voting scenario in which each voter expresses his/her level of affinity about a proposal, by choosing a value in the set J={-j,…,-1,0,1,…,j}, and these individual votes produce a collective ...
    • An extension of the CM array for periodic power signals 

      Cerquides Bueno, Jose Ramon (European Association for Signal Processing (EURASIP), 1994)
      Text en actes de congrés
      Accés obert
    • An extension of the slash-elliptical distribution 

      Rojas, Mario A.; Bolfarine, Heleno; Gómez, Héctor W. (Institut d'Estadística de Catalunya, 2014-12-04)
      Article
      Accés obert
      This paper introduces an extension of the slash-elliptical distribution. This new distribution is generated as the quotient between two independent random variables, one from the elliptical family (numerator) and the other ...
    • An extension of the StarSs programming model for platforms with multiple GPUs 

      Ayguadé Parra, Eduard; Badia Sala, Rosa Maria; Igual Peña, Francisco D.; Labarta Mancho, Jesús José; Mayo Gual, Rafael; Quintana Ortí, Enrique Salvador (Springer, 2009)
      Comunicació de congrés
      Accés obert
      While general-purpose homogeneous multi-core architectures are becoming ubiquitous, there are clear indications that, for a number of important applications, a better performance/power ratio can be attained using specialized ...
    • An extension of the unity vector control method 

      Roqueiro, Nestor; Do Carmo, L. M. M.; Silveira, H. B.; Fossas Colet, Enric (Institute of Electrical and Electronics Engineers (IEEE), 2014)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      In this work, Unity Vector Control is revisited based on the results by V. Utkin and co-workers. The approach here presented extends the one reported by V. Utkin and co-workers so that independent feedback gains may be ...
    • An extension of Vickrey Commute Model by means of the Macroscopic Fundamental Diagram (MFD) 

      Ruiz Palomo, Daniel (Universitat Politècnica de Catalunya, 2019-02-20)
      Projecte Final de Màster Oficial
      Accés obert
      El model de Vickrey s'ha utilitzat per gestionar el trànsit en una infrastructura que presenti un coll d'ampolla (problema unidimensional). La idea del TFM és ampliar el model de Vickrey a una àrea urbana (barri, prob. ...