Ara es mostren els items 45-64 de 64

    • Reply to 

      Egozcue Rubí, Juan José (2009-10)
      Article
      Accés restringit per política de l'editorial
    • Routing with prioritization based on statistics in OBS networks 

      Escolar Díaz, Mariana; Hesselbach Serra, Xavier (2009)
      Text en actes de congrés
      Accés obert
      This paper introduces a new strategy to provide QoS in IP/OBS networks, using Routing with Prioritization Based on Statistics (RPBS). This proposal uses the feedback scheme in optical networks to provide statistical knowledge ...
    • Scarcity of crossing dependencies: A direct outcome of a specific constraint? 

      Gómez Rodríguez, Carlos; Ferrer Cancho, Ramon (American Chemical Society (ACS), 2017-12-04)
      Article
      Accés obert
      The structure of a sentence can be represented as a network where vertices are words and edges indicate syntactic dependencies. Interestingly, crossing syntactic dependencies have been observed to be infrequent in human ...
    • Spatial distribution analysis with capture effect of a mobile S-ALOHA network 

      Covarrubias, David; Ruiz Boqué, Sílvia; Huguet, Joan; Olmos Bonafé, Juan José (Institute of Electrical and Electronics Engineers (IEEE), 1998)
      Text en actes de congrés
      Accés obert
      The throughput performance of a mobile S-ALOHA network can be improved considering the capture phenomenon, which also depends on the spatial distribution of the mobiles within the cell. We have studied the capture probabilities ...
    • Statistical analysis and comparison of 2T and 3T1D e-DRAM minimum energy operation 

      Rana, Manish; Canal Corretger, Ramon; Amat Bertran, Esteve; Rubio Sola, Jose Antonio (Institute of Electrical and Electronics Engineers (IEEE), 2016)
      Text en actes de congrés
      Accés obert
      Bio-medical wearable devices restricted to their small-capacity embedded-battery require energy-efficiency of the highest order. However, minimum-energy point (MEP) at sub-threshold voltages is unattainable with SRAM memory, ...
    • Statistical analysis of experimental factors for synthesis of copper oxide and tin oxide for antibacterial applications 

      Rezayat, Mohammad; Karamimoghadam, Mojtaba; Yazdi, Morteza Saghafi; Moradi, Mahmoud; Bodaghi, Mahdi (2023-06-10)
      Article
      Accés restringit per política de l'editorial
      This research explores the impact of Cu composition, heating temperature, and milling time on the production of copper-tin alloy nanoparticles. By employing design of experiments techniques, the study systematically evaluates ...
    • Statistical analysis of nonlinear optical amplifier in high saturation 

      Ruiz Moreno, Sergio; Junyent Giralt, Gabriel; Soneira Ferrando, M. José (1988-02)
      Article
      Accés obert
    • Statistical analysis of stoppages in a metal stamping line: a case study 

      Rodríguez Alvarado, Lisaura; Silva Rivera, Usiel; Loyo Quijada, Jesús (OmniaScience, 2023-11)
      Article
      Accés obert
      Purpose: This article seeks to establish a statistical analysis to estimate the time of stoppages in a stamping line, which have a high variability that generates an unreliable scenario for the production program. Likewise, ...
    • Statistical Modelling of Channel Occupancy in Trunked PAMR Systems 

      Jordán Parra, Javier; Barceló Arroyo, Francisco (Elsevier Science B.V., 1997-06)
      Article
      Accés restringit per política de l'editorial
      Public access mobile radio systems (PAMR) using trunking technology allow more efficient use of the frequency spectrum, as all the users of the system jointly use a common pool of channels. Trunked PAMR systems can operate ...
    • Statistical reference criteria for adaptive signal processing in digital communications 

      Sala Álvarez, José; Vázquez Grau, Gregorio (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 1997-01-01)
      Article
      Accés obert
      A general criterion for the design of adaptive systems in digital communications called the statistical reference criterion is proposed. The criterion is based on imposition of the probability density function of the ...
    • Statistical study of resonance in AC traction systems equipped with Steinmetz circuit 

      Monjo Mur, Lluís; Sainz Sapera, Luis; Rull Duran, Joan (2013-10)
      Article
      Accés restringit per política de l'editorial
      AC traction systems can be 25 kV/50 Hz single-phase, non-linear, time-varying loads of random naturecausing unbalance and distortion of the supply voltages. To reduce voltage unbalance, thyristor controlledreactances are ...
    • Statistics of the slope-method estimator 

      Rocadenbosch Burillo, Francisco; Comerón Tejero, Adolfo; Albiol Schnitger, Lorena (Optical Society of America, 2000-11-30)
      Article
      Accés obert
      The slope method has customarily been used and is still used for inversion of atmospheric optical parameters, extinction, and backscatter in homogeneous atmospheres from lidar returns. Our aim is to study the underlying ...
    • Strict calculation of the light statistics at the output of a travelling wave optical amplifier 

      Guitart Felip, Jorge; Ruiz Moreno, Sergio (Institution of Electrical Engineers, 1993-08)
      Article
      Accés obert
      A new method for calculating the probability density function of the photon number propagating through a travelling wave optical amplifier with no restriction on its working regime (linear and nonlinear) is reported. The ...
    • Structural damage detection and classification based on machine learning algorithms 

      Vitola Oyaga, Jaime; Tibaduiza Burgos, Diego Alexander; Anaya Vejar, Maribel; Pozo Montero, Francesc (2016)
      Comunicació de congrés
      Accés obert
      Structural Health Monitoring is a growing area of interest given the benefits obtained from its use. This area includes different tasks in the damage identification process, among them, the most important is the damage ...
    • System identification using a linear combination of cumulant slices 

      Rodríguez Fonollosa, José Adrián; Vidal Manzano, José (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 1993-07-01)
      Article
      Accés obert
      In this paper we develop a new linear approach to identify the parameters of a moving average (MA) model from the statistics of the output. First, we show that, under some constraints, the impulse response of the system ...
    • The continuous wavelet transform as a maximum entropy solution of the corresponding inverse problem 

      Rebollo Neira, Laura; Fernández Rubio, Juan Antonio (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 1999-07-31)
      Article
      Accés obert
      The continuous wavelet transform is obtained as a maximum entropy solution of the corresponding inverse problem. It is well known that although a signal can be reconstructed from its wavelet transform, the expansion is ...
    • The influence of 5-HTT and COMT genotypes on verbal fluency in ecstasy users 

      Fagundo, Ana B.; Cuyas, Elisabet; Verdejo Garcia, Antonio; Khymenets, Olha; Langohr, Klaus; Martín-Santos, Rocío; Farré, Magí; de la Torre, Rafael (2010-09)
      Article
      Accés restringit per política de l'editorial
      Deficits in verbal fluency associated with ecstasy use have been well established; however, the mechanisms underlying this impairment have yet to be elucidated. In this study we investigated for the first time whether there ...
    • Tipologia i patrons de consum de les llars espanyoles 

      Ponseti Muntaner, Marina (Universitat Politècnica de Catalunya / Universitat de Barcelona, 2020-06)
      Treball Final de Grau
      Accés obert
      [cat] Són evidents les transformacions i la rellevància del consum en el segle XXI, on el nivell de benestar, qualitat de vida i classe social estan fortament lligades a la capacitat d’adquisició. A més, la globalització, ...
    • Towards stochastic methods in CFD for engineering applications 

      Tosi, Riccardo (Universitat Politècnica de Catalunya, 2021-12-21)
      Tesi
      Accés obert
      Recent developments of high performance computing capabilities allow solving modern science problems employing sophisticated computational techniques. However, it is necessary to ensure the efficiency of state of the art ...
    • Wigner higher-order spectra: definition, properties, computation and application to transient signal analysis 

      Rodríguez Fonollosa, Javier; Nikias, Chrysostomos L. (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 1993-01-31)
      Article
      Accés obert
      The Wigner higher order moment spectra (WHOS) are defined as extensions of the Wigner-Ville distribution (WD) to higher order moment spectra domains. A general class of time-frequency higher order moment spectra is also ...