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    • A stochastic simplicial SIS model for complex networks 

      Tocino García, Ángel Andrés; Hernández Serrano, Daniel; Hernández Serrano, Juan; Villarroel Rodríguez, Francisco Javier (2023-06-01)
      Article
      Accés obert
      We propose a stochastic epidemiological model for simplicial complex networks by means of a stochastic differential equation (SDE) that extends the mean field approach of the simplicial social contagion model. We show that, ...

    • A stochastic version of the strategy-based congested transit assignment model and a technique by smoothing approximations 

      Codina Sancho, Esteve; Rosell Camps, Francisca (Springer, 2018)
      Article
      Accés restringit per política de l'editorial
      This paper develops a stochastic version for the strategybased congested transit assignment problem stated by Cominetti and Correa (Trans. Sci. 35(3):250-267, 2001). As a distinctive approach, this stochastic version takes ...

    • A story about how the novel ROSPIN Academy programme is bringing space education to the Romanian youth in the pandemic context 

      Nita, Maria Alexandra; Dumitrescu, Adrian; Bisag, Rares; Anghel, Serban; Stefanescu, Raluca (Universitat Politècnica de Catalunya, 2022-04-29)
      Comunicació de congrés
      Accés obert
      Continuous education is the foundation of a sustainable society and ecosystem, and this paper relates the story of one of the most ambitious educational programmes for University students from Romania. The country acceded ...

    • A straightforward bioprocess for a cleaner paper decolorization 

      Valls Vidal, Cristina; Cusola Aumedes, Oriol; Vidal Lluciá, Teresa; Torres López, Antonio Luis; Roncero Vivero, María Blanca (2019-07-17)
      Article
      Accés obert
      A new biotechnological sequence for decolorizing red and black colored paper was developed to reduce the environmental impact of the chemicals used in paper recycling processes. Commercially available low-redox potential ...

    • A straightforward method to prepare supported Au clusters by mechanochemistry and its application in photocatalysis 

      Chen, Yufen; Soler Turu, Lluís; Xie, Chenyang; Vendrell Villafruela, Xavier; Serafin, Jaroslaw; Crespo Artiaga, Daniel; Llorca Piqué, Jordi (Elsevier, 2020-12)
      Article
      Accés obert
      Reducing the metal particle size on semiconductor-based materials from a few nanometers down to well-dispersed clusters or single atoms has been demonstrated to be an effective strategy to enhance the photocatalytic ...

    • A strain gradient problem with a fourth-order thermal law 

      Bazarra, Noelia; Fernández García, José Ramón; Quintanilla de Latorre, Ramón (2024-08-01)
      Article
      Accés obert
      In this paper, a strain gradient thermoelastic problem is studied from the numerical point of view. The heat conduction is modeled by using the type II thermal law and the second gradient of the thermal displacement is ...

    • A strain rate dependent model with decreasing Young’s Modulus for cortical human bone 

      Sánchez Molina, David; García Vilana, Silvia; Llumà Fuentes, Jordi (Institute of Physics (IOP), 2023-05-11)
      Article
      Accés restringit per política de l'editorial
      This research studies the dynamic behavior of human cortical bone specimens and investigates their mechanical properties using uniaxial tensile tests. The main experimental finding is that in the range of strain rate ...

    • A strain-based plastic viscous-damage model for massive concrete structures 

      Faria, R; Oliver Olivella, Xavier; Cervera Ruiz, Miguel (1998-05)
      Article
      Accés obert
      Within the framework of continuum damage mechanics, a new constitutive damage model for massive concrete is presented, mainly intended for the seismic analysis of gravity and arch dams. Consistent with thermodynamic ...

    • A strategic approach for bottleneck identification in make-to-order environments: a drum-buffer-rope action research based case study 

      Lizarralde-Aiastui, Aitor; Apaolza-Perez de Eulate, Unai; Mediavilla, Miguel (OmniaScience, 2020-04)
      Article
      Accés obert
      Purpose: This study focused on providing a strategic perspective for the selection and exploitation of bottlenecks in make-to-order production systems, a largely unexplored field in the literature. The researchers developed ...

    • A strategic niche management analysis : A case study of electrifying steam crackers in the Netherlands 

      Doherty, Catherine (Universitat Politècnica de Catalunya, 2023-11-01)
      Projecte Final de Màster Oficial
      Accés obert
      Realitzat a/amb:   Accenture
      Steam cracking is a petrochemical process in which larger hydrocarbons are broken down into smaller hydrocarbons. It is a key process in the production of ethylene, propylene and other C4 olefins. These are used in ...

    • A strategy case to facilitate the technology transfer between universities-enterprise 

      Sánchez Romero, Montserrat; Gil Espert, Lluís; Segura Vicente, Sonia (2012)
      Text en actes de congrés
      Accés restringit per política de l'editorial

    • A strategy for the numerical simulation of metal deposition and multi-pass welding processes 

      Dialami, Narges; Chiumenti, Michele; Agelet de Saracibar Bosch, Carlos; Cervera Ruiz, Miguel (Centro Internacional de Métodos Numéricos en Ingeniería (CIMNE), 2009)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      In this work a numerical model is developed to accurately predict temperature evolution and distortions associated to the successive welding layers deposited during the multi-pass welding and metal deposition processes (MD).

    • A stratospheric balloon GNSS-R experiment: The 3Cat-2 project in DLR/SNSB BEXUS 

      Carreño Luengo, Hugo; Camps Carmona, Adriano José; Querol Borràs, Jorge; Forte Veliz, Giuseppe Francesco; Onrubia Ibáñez, Raúl; Díez, Raúl (Institute of Electrical and Electronics Engineers (IEEE), 2014)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      Universitat Politècnica de Catalunya (UPC) - BarcelonaTech Remote Sensing Laboratory focus on the development of breakthrough concepts. The 3Cat-2 mission is on the synergy of GNSS reflectometry and the CubeSat concept. ...

    • A streaming flow-based technique for traffic classification applied to 12 + 1 years of Internet traffic 

      Carela Español, Valentín; Barlet Ros, Pere; Bifet Figuerol, Albert Carles; Fukuda, Kensuke (2016-10)
      Article
      Accés obert
      The continuous evolution of Internet traffic and its applications makes the classification of network traffic a topic far from being completely solved. An essential problem in this field is that most of proposed techniques ...

    • A streaming machine description and programming model 

      Carpenter, Paul Matthew; Ródenas Picó, David; Martorell Bofill, Xavier; Ramírez Bellido, Alejandro; Ayguadé Parra, Eduard (2007-07)
      Article
      Accés restringit per política de l'editorial
      In this paper we present the initial development of a streaming environment based on a programming model and machine description. The stream programming model consists of an extension to the C language and it’s translation ...

    • A stress driven growth model for soft tissue considering biological availability 

      Oller Martínez, Sergio Horacio; Bellomo, F.J; Armero, Francisco; Nallim, L.G. (2011)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Some of the key factors that regulate growth and remodeling of tissues are fundamentally mechanical. However, it is important to take into account the role of bioavailability together with the stresses and strains in the ...

    • A stroboscopic control for the confinement of swarms in a spherical domain around the Earth 

      García Taberner, Laura; Masdemont Soler, Josep (2017)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Swarms of spacecraft are an idea that has been growing in interest in the last few years. This work focuses on the strategies and costs for the maintenance of a swarm of a large number of spacecraft in a close neighborhood ...

    • A strong-motion database of Costa Rica: 20 Yr of digital records 

      Moya-Fernandez, Aaron; Pinzón Ureña, Luis; Schmidt-Díaz, Victor; Hidalgo-Leiva, Diego; Pujades Beneit, Lluís (2020-11)
      Article
      Accés obert
      In this article, we present a strong-motion database from earthquakes recorded by the Earthquake Engineering Laboratory at the University of Costa Rica. The database consists of 2471 three-component accelerograms from 155 ...

    • A stronger null hypothesis for crossing dependencies 

      Ferrer Cancho, Ramon (2014-12-04)
      Article
      Accés obert
      The syntactic structure of a sentence can be modeled as a tree where vertices are words and edges indicate syntactic dependencies between words. It is well known that those edges normally do not cross when drawn over the ...

    • A structural approach including the behavior of collagen cross-links to model patient-specific human carotid arteries 

      Sáez Viñas, Pablo; Peña, Estefanía; Martínez, Miguel Angel (2014)
      Article
      Accés obert
      The objective of this work is to develop a remodeling model for biological matter coupling two different processes in a 3D framework: reorientation of the preferential direction of a given fibered structure and reorientation ...