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Ara es mostren els items 3057-3076 de 245420
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A CFD study of an annular pilot plant reactor for Paracetamol photo-Fenton degradation
(Elsevier, 2021-04-15)
Article
Accés obertThis work studies in detail the photo-Fenton degradation process of Paracetamol (PCT) on an annular pilot-plant reactor using Computational Fluid Dynamics (CFD). A cylindrical lamp emission model was originally implemented ... -
A CFD-based surrogate model for predicting flow parameters in a ventilated room using sensor readings
(2022-07-01)
Article
Accés restringit per política de l'editorialIn this work, we develop a computational fluid dynamics (CFD)-based surrogate model, which predicts flow parameters under different geometrical configurations and boundary conditions in a benchmark case of a mechanically ... -
A Chandrasekhar mass progenitor for the type Ia supernova remnant 3C 397 from the enhanced abundances of nickel and manganese
(2015-03-12)
Article
Accés restringit per política de l'editorialDespite decades of intense efforts, many fundamental aspects of Type Ia supernovae (SNe Ia) remain elusive. One of the major open questions is whether the mass of an exploding white dwarf (WD) is close to the Chandrasekhar ... -
A channel allocation algorithm for OSA-Enabled IEEE 802.11 WLANs
(2009-09)
Text en actes de congrés
Accés obertChannel allocation problem is a major challenge in wireless local area networks (WLANs), especially in dense deployments of access points (APs) where congestion of the unlicensed spectrum bands (i.e., ISM bands) could ... -
A channel allocation algorithm for OSA-Enabled IEEE 802.11 WLANs
(2009)
Text en actes de congrés
Accés obertChannel allocation problem is a major challenge in wireless local area networks (WLANs), especially in dense deployments of access points (APs) where congestion of the unlicensed spectrum bands (i.e., ISM bands) could ... -
A channel characterization technique for HF communications
(1985)
Text en actes de congrés
Accés obertA wideband channel sounder to characterize the HF radio channel is described. Based on a pseudorandom sequence technique it allows the measurement of the complex impulsional response of the channel with time and frequency ... -
A chaotic secure communication scheme based on duffing oscillators and frequency estimation
(2013)
Text en actes de congrés
Accés obertThis work presents a new technique to securely transmit and retrieve a message signal via chaotic systems. In our system, a two-valued message signal modulates the frequency of a Duffing oscillator sinusoidal term. An ... -
A chaotic secure communication system design based on iterative learning control theory
(Multidisciplinary Digital Publishing Institute, 2016-10-01)
Article
Accés obertThis paper presents an application of Iterative Learning Control (ILC) theory to secure communication system design by using chaotic signals, where the logistic-map is employed as a source of chaos. Meanwhile, the ILC ... -
A characterisation of the academic profile of a community of professors involved in sustainable human development : the case of the Global Dimension in Engineering Education
(2016)
Comunicació de congrés
Accés obertIn the last decade, a number of technical universities and engineering faculties have been engaged in different initiatives aimed at integrating sustainable development in their functions. Academic staff engagement in ... -
A characteristic length scale for density gradients in supercritical monocomponent flows near pseudoboiling
(2020-12)
Report de recerca
Accés obert -
A characterization for residuated implications on J [0, 1]. Application to the L-fuzzy concept theory.
(Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 2005)
Article
Accés obertIn this paper, a new characterization for the interval-valued residuated fuzzy implication operators is presented, with which it is possible to use them in a simple and efficient way, since the calculation of the values ... -
A characterization of hysteresis systems
(2012)
Comunicació de congrés
Accés restringit per decisió de l'autorHysteresis is a nonlinear phenomenon exhibited by systems stemming from various science and engineering areas. To detect experimentally the presence of hysteresis in a system, the graph output versus input of the system ... -
A characterization of isochronous centres in terms of symmetries
(2000)
Article
Accés obertWe present a description of isochronous centres of planar vector fields $X$ by means of their groups of symmetries. More precisely, given a normalizer $U$ of $X$ (i.e., $[X,U]=\mu X$, where $\mu$ is a scalar function), we ... -
A characterization of PFNP|| = PFNP[log]
(1993-02)
Report de recerca
Accés obertSome implications of the fact PFNP∥ = PFNP[log] are known in terms of equalities between complexity classes of sets, but a characterization in the same terms is still unknown. Here we provide a characterization in terms ... -
A characterization of the innovations of first order autoregressive models
(2015-02-01)
Article
Accés restringit per política de l'editorialSuppose that follows a simple AR(1) model, that is, it can be expressed as , where is a white noise with mean equal to and variance . There are many examples in practice where these assumptions hold very well. Consider . ... -
A Characterization of universal stability for directed graphs in the adversarial queueing model
(2002-01)
Report de recerca
Accés obertIn this paper we provide a characterization of universal stability for digraphs in the general case that the packets are not restricted to follow simple paths. Furthermore, we consider a variation of the Nearest To Go ... -
A Characterization of universal stability in the adversarial queuing model
(2003-10)
Report de recerca
Accés obertWe study universal stability of directed and undirected graphs in the adversarial queueing model for static packet routing. In this setting, packets are injected in some edge and have to traverse a predefined path before ... -
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 checkpoint/restart directive-based approach
(Universitat Politècnica de Catalunya, 2017)
Projecte Final de Màster Oficial
Accés obert
Realitzat a/amb: Barcelona Supercomputing CenterExascale platforms require programming models incorporating support for resilience capabilities since the huge number of components they are expected to have is going to increase the number of errors. Checkpoint/restart ... -
A Chimera method for the incompressible Navier-Stokes equations
(John Wiley & Sons, 2014-05-30)
Article
Accés obertThe Chimera method was developed three decades ago as a meshing simplification tool. Different components are meshed independently and then glued together using a domain decomposition technique to couple the equations ...