Exploració per tema "Statistical analysis"

Ara es mostren els items 33-52 de 64

    • Linking shape and rotation of grains during triaxial compression of sand 

      Rorato, Riccardo; Arroyo Alvarez de Toledo, Marcos; Andò, Edward; Gens Solé, Antonio; Viggiani, Gioacchino (2020-11)
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      Accés obert
      Particle shape has a strong effect on the mechanical response of coarse soils. This has been usually observed examining specimen-scale or engineering-scale responses, which are the sum of many microscale interactions. In ...

    • Mechanical optimization of concrete with recycled PET fibres based on a statistical-experimental study 

      Meza, Alejandro; Pujadas Álvarez, Pablo; Meza, Laura Montserrat; Pardo Bosch, Francesc; López Carreño, Rubén-Daniel (Multidisciplinary Digital Publishing Institute (MDPI), 2021-01-06)
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      Accés obert
      Discarded polyethylene terephthalate (PET) bottles have damaged our ecosystem. Problems of marine fauna conservation and land fertility have been related to the disposal of these materials. Recycled fibre is an opportunity ...

    • Micromechanical mapping of polycrystalline cubic boron nitride composites by means of high-speed nanoindentation: Assessment of microstructural assemblage effects 

      Gordon Pozuelo, Sandra; Besharatloo, Hossein; Wheeler, Jeffrey; Rodriguez Suarez, Teresa; Roa Rovira, Joan Josep; Jiménez Piqué, Emilio; Llanes Pitarch, Luis Miguel (Elsevier, 2022-08-28)
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      Polycrystalline cubic boron nitrides (PcBNs) are composites widely used as cutting tool materials due to their exceptional high hardness and wear resistance. Investigation of their micromechanical properties is key for ...

    • N-gram-based Machine Translation 

      Mariño Acebal, José Bernardo; Banchs Martínez, Rafael Enrique; Crego Clemente, Josep Maria; Gispert Brosa, Adrian de; Lambert, Patrik; Rodríguez Fonollosa, José Adrián; Ruiz Costa-Jussà, Marta (2006-12)
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      Accés obert
      This article describes in detail an n-gram approach to statistical machine translation. This approach consists of a log-linear combination of a translation model based on n-grams of bilingual units, which are referred to ...

    • Novel mechanical characterization of austenite and ferrite phases within duplex stainless steel 

      Besharatloo, H.; Carpio Garza, Marcel Francisco; Cabrera Marrero, José M.; Mateo García, Antonio Manuel; Fargas Ribas, Gemma; Wheeler, Jeffrey; Roa Rovira, Joan Josep; Llanes Pitarch, Luis Miguel (Multidisciplinary Digital Publishing Institute (MDPI), 2020-10)
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    • On the inverse windowed Fourier transform 

      Rebollo Neira, Laura; Fernández Rubio, Juan Antonio (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 1999-11-30)
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      Accés obert
      The inversion problem concerning the windowed Fourier transform is considered. It is shown that, out of the infinite solutions that the problem admits, the windowed Fourier transform is the "optimal" solution according to ...

    • Optimum energy allocation for massive spread-spectrum multiple access in networks of uncoordinated energy-limited terminals 

      Villares Piera, Nemesio Javier; Rey Micolau, Francesc; Sala Álvarez, José (Institute of Electrical and Electronics Engineers (IEEE), 2016)
      Text en actes de congrés
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      This paper derives the energy allocation policy that maximizes the aggregate spectral efficiency of an uncoordinated spread-spectrum multiple access network operating in the large-user regime and subject to a longterm ...

    • PCA based stress monitoring of cylindrical specimens using PZTs and guidedwaves 

      Quiroga Méndez, Jabid; Mujica Delgado, Luis Eduardo; Villamizar Mejía, Rodolfo; Ruiz Ordóñez, Magda; Camacho Navarro, Jhonatan (Multidisciplinary Digital Publishing Institute (MDPI), 2017-12)
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      Accés obert
      Since mechanical stress in structures affects issues such as strength, expected operational life and dimensional stability, a continuous stress monitoring scheme is necessary for a complete integrity assessment. Consequently, ...

    • Performance analysis of a new packet trace compressor based on TCP flow clustering 

      Holanda Filho, Raimir; Verdú Mulà, Javier; García Vidal, Jorge; Valero Cortés, Mateo (Institute of Electrical and Electronics Engineers (IEEE), 2005)
      Text en actes de congrés
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      In this paper we study the properties of a new packet trace compression method based on clustering of TCP flows. With our proposed method, the compression ratio that we achieve is around 3%, reducing the file size, for ...

    • Performance analysis of an ISMA DS-CDMA packet data network 

      Pérez Romero, Jordi; Agustí Comes, Ramon; Sallent Roig, Oriol (Institute of Electrical and Electronics Engineers (IEEE), 1999)
      Text en actes de congrés
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      The efficiency of MAC protocols for a packet switching DS-CDMA network strongly depends on the offered traffic statistic. For bursty sources where transmission needs are restricted to short message lengths, a protocol such ...

    • Pitch determination of noisy speech using higher order statistics 

      Moreno Bilbao, M. Asunción; Rodríguez Fonollosa, José Adrián (. IEEE, 1992)
      Text en actes de congrés
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      The use of third-order statistics to determine the pitch of a speech signal and how they can eliminate the effect of a wide range of noises, including those generated by periodic sources, are shown. The proposed algorithm ...

    • Positive time-frequency distributions based on joint marginal constraints 

      Rodríguez Fonollosa, Javier (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 1996-08-01)
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      Accés obert
      This correspondence studies the formulation of members of the Cohen-Posch class of positive time-frequency energy distributions. Minimization of cross-entropy measures with respect to different priors and the case of ...

    • 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
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      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)
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      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
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      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
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      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)
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    • Statistical analysis of stoppages in a metal stamping line: a case study 

      Rodríguez Alvarado, Lisaura; Silva Rivera, Usiel; Loyo Quijada, Jesús (OmniaScience, 2023-11)
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      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, ...