Now showing items 1-20 of 43

    • A versatile CMOS transistor array IC for the statistical characterization of time-zero variability, RTN, BTI, and HCI 

      Diaz Fortuny, Javier; Martin Martínez, Javier; Rodríguez Martínez, Rosana; Castro López, Rafael; Roca Moreno, Elisenda; Aragonès Cervera, Xavier; Barajas Ojeda, Enrique; Mateo Peña, Diego; Fernández Fernández, Francisco V.; Nafría Maqueda, Montserrat (2018-01-01)
      Article
      Open Access
      Statistical characterization of CMOS transistor variability phenomena in modern nanometer technologies is key for accurate end-of-life prediction. This paper presents a novel CMOS transistor array chip to statistically ...
    • Activation process of air stable nanoscale zero-valent iron particles 

      Ribas Fargas, David; Cernik, M.; Benito Páramo, José Antonio; Filip, J.; Martí Gregorio, Vicenç (2017-07-15)
      Article
      Open Access
      Nanoscale Zero Valent Iron (nZVI) represents a promising material for subsurface water remediation technology. However, dry, bare nZVI particles are highly reactive, being pyrophoric when they are in contact with air. The ...
    • Aging Assessment and Design Enhancement of Randomized Cache Memories 

      Trilla, David; Hernandez, Carles; Abella Ferrer, Jaume; Cazorla, Francisco J. (Institute of Electrical and Electronics Engineers (IEEE), 2017-01-17)
      Article
      Open Access
      Critical real-time systems require the estimation of the worst-case execution time (WCET) for scheduling purposes and resource budgeting. Measurement-based probabilistic timing analysis (MBPTA) has been shown recently as ...
    • Aging compensation in a class-A high-frequency amplifier with DC temperature measurements 

      Altet Sanahujes, Josep; Aragonès Cervera, Xavier; Barajas Ojeda, Enrique; Gisbert Beguer, Xavier; Martínez Domingo, Sergio; Mateo Peña, Diego (Multidisciplinary Digital Publishing Institute (MDPI), 2023-08-10)
      Article
      Open Access
      One of the threats to nanometric CMOS analog circuit reliability is circuit performance degradation due to transistor aging. To extend circuit operating life, the bias of the main devices within the circuit must be adjusted ...
    • Aging determination of series-connected lithium-ion cells independent of module design 

      Hein, Thiemo Harald; Andreas, Ziegler; Oeser, David; Montesinos Miracle, Daniel; Ackva, Ansgar (Multidisciplinary Digital Publishing Institute (MDPI), 2023-03-17)
      Article
      Open Access
      In this work, a battery consisting of eight commercial NMC/graphite cells connected in series was cycled to 60% of its initial capacity. During the test, special care was taken to ensure that the results were not influenced ...
    • Aging in CMOS RF linear power amplifiers: an experimental study 

      Aragonès Cervera, Xavier; Barajas Ojeda, Enrique; Crespo Yepes, Albert; Mateo Peña, Diego; Rodríguez Martínez, Rosana; Martin Martínez, Javier; Nafría Maqueda, Montserrat (IEEE Microwave Theory and Techniques Society, 2021-02-01)
      Article
      Open Access
      An extensive experimental analysis of the hot carrier injection (HCI) and bias temperature instability (BTI) aging effects on RF linear power amplifiers (PAs) is presented in this article. Two different 2.45-GHz PA topologies ...
    • Aging in CMOS RF linear power amplifiers: experimental comparison and modeling 

      Aragonès Cervera, Xavier; Mateo Peña, Diego; Barajas Ojeda, Enrique; Crespo-Yepes, A.; Rodríguez Martínez, Rosana; Martin Martínez, Javier; Nafría Maqueda, Montserrat (Institute of Electrical and Electronics Engineers (IEEE), 2019)
      Conference report
      Restricted access - publisher's policy
      This paper characterizes experimentally the aging degradation experienced by two different 2.45 GHz power amplifier circuits of similar performance, implemented in a 65 nm CMOS technology. Results demonstrate the importance ...
    • Aging model for re-used electric vehicle batteries in second life stationary applications 

      Canals Casals, Lluc; Amante García, Beatriz; González Benítez, María Margarita (Springer, 2017-03-08)
      Part of book or chapter of book
      Restricted access - publisher's policy
      This book gathers the best papers presented at the 19th International Congress on Project Management and Engineering, which was held in Granada, Spain in July 2015. It covers a range of project management and engineering ...
    • Aging time reduction to increase the production line capacity of LCD television 

      Gil González, Alba (Universitat Politècnica de Catalunya, 2008-05-28)
      Master thesis (pre-Bologna period)
      Open Access
      The aim of this project is to make a study on the reduction of the aging time of a Sony LCD television to increase its production at the company. The aging time is a period of time when the turned on LCD television is ...
    • Aging-aware parallel execution 

      Medeiros, Thiarles S.; Berned, Gustavo P.; Navarro Muñoz, Antoni; Rossi, Fábio D.; Luizelli, Marcelo C.; Brandalero, Marcelo; Hübner, Michael; Beck, Antonio Carlos S.; Lorenzon, Arthur F. (Institute of Electrical and Electronics Engineers (IEEE), 2021-09)
      Article
      Open Access
      Computation has been pushed to the edge to decrease latency and alleviate the computational burden of the IoT applications in the cloud. However, the increasing processing demands of Edge Applications make necessary the ...
    • Analysis of the tortuosity of the Abdominal Aorta as health risk factor 

      Benítez Gracia, Daniel (Universitat Politècnica de Catalunya, 2020-07-14)
      Bachelor thesis
      Open Access
      L'augment de l'esperança de vida de les persones en aquestes últimes dècades, comporta un major nombre de malalties a tractar i, per tant, suposa destinar una gran part dels recursos sanitaris als col·lectius d'edat avançada. ...
    • Atención visual dinámica y envejecimiento 

      González Campos, Sandra (Universitat Politècnica de Catalunya, 2017-05-10)
      Master thesis
      Open Access
      Introducció: Un funcionament eficient de les capacitats sensorials i cognitives sol ser considerat com a indicador rellevant de maduresa saludable de la població. Això és així perquè l'envelliment, generalment, s'associa ...
    • Characterization of mechanical relaxation in a Cu-Zr-Al metallic glass 

      Liu, Chaoren; Pineda Soler, Eloi; Crespo Artiaga, Daniel (2015-09-15)
      Article
      Open Access
      The temperature dependence of the relaxation times of Cu46Zr46Al8 glass was measured by means of mechanical spectroscopy and static stress-relaxation measurements. The weak intensity of secondary relaxation in this alloy ...
    • Chemical Changes in Pictorial Models: Characterization by FT-IR Spectroscopy 

      Urbina, Veronica; Pradell Cara, Trinitat; Salvadó Cabré, Nativitat; Buti Papiol, Salvador; Ruvalcaba, José Luis (2009)
      Conference report
      Restricted access - publisher's policy
      In order to understand the interaction between copper containing pigments and the organic binders in paintings, as well as reaction/alteration products, a series of pictorial models have been prepared and ...
    • CMOS inverter performance degradation and its correlation with BTI, HCI and OFF state MOSFETs aging 

      Crespo Yepes, Albert; Nasarre Campo, Carles; Garsot Borras, Norbert; Martin Martínez, Javier; Rodríguez Martínez, Rosana; Barajas Ojeda, Enrique; Aragonès Cervera, Xavier; Mateo Peña, Diego; Nafría Maqueda, Montserrat (2022-05-01)
      Article
      Restricted access - publisher's policy
      In this work, CMOS inverters are subjected to electrical stress emulating a complete operation cycle and the shifts in the performance parameters (i.e., peak current and inversion voltage) evaluated. Moreover, degradation ...
    • Comparació de l'atenció visual dinàmica en poblacions de diverses edats 

      Bages Blanco, Sílvia (Universitat Politècnica de Catalunya, 2017-05-25)
      Bachelor thesis
      Open Access
      L’atenció visual dinàmica és una habilitat essencial per adaptar-nos al medi dinàmic i constantment canviant que ens envolta. Tot i que molts estímuls amb que interaccionem diàriament són en moviment, per exemple en la ...
    • Controlled degradation stochastic resonance in adaptive averaging cell-based architectures 

      Aymerich Capdevila, Nivard; Cotofana, Sorin; Rubio Sola, Jose Antonio (2013-11)
      Article
      Restricted access - publisher's policy
      In this paper, we first analyze the degradation stochastic resonance (DSR) effect in the context of adaptive averaging (AD-AVG) architectures. The AD-AVG is the adaptive version of the well-known AVG architecture . It is ...
    • Dynamic microstructural evolution of an Al–Zn–Mg–Cu alloy (7075) during continuous heating and the influence on the viscoelastic response 

      Rojas Gregorio, José Ignacio; Crespo Artiaga, Daniel (2017-11-06)
      Article
      Open Access
      The microstructural evolution of an Al–Zn–Mg–Cu alloy under continuous heating over the temperature range of 298 to 648 K (25 to 375 °C) is characterized by focused ion beam-scanning electron microscopy, transmission ...
    • Dynamics of multimorbidity and frailty, and their contribution to mortality, nursing home and home care need: A primary care cohort of 1 456 052 ageing people 

      Carrasco Ribelles, Lucía Amalia; Roso Llorach, Albert; Cabrera-Bean, Margarita; Costa Garrido, Anna; Zabaleta del Olmo, Edurne; Toran Monserrat, Pere; Orfila Pernas, Francesc; Violán Fors, Concepción (2022-10-01)
      Article
      Open Access
      Background: Prevalence of both multimorbidity and frailty increases with age, but more evidence is needed to elucidate their relationship and their association with other health-related outcomes. We analysed the dynamics ...
    • Effect of aging on the fracture characteristics and brittleness of a high-strength concrete 

      Gettu, Ravindra; García Álvarez, Víctor Óscar; Aguado de Cea, Antonio (Elsevier, 1998)
      Article
      Open Access
      Results of notched beam (fracture) tests on a 60 MPa silica fume concrete at the ages of 4, 10, 31 and 232 days are presented. Fracture parameters at the different ages were obtained using the size effect and cohesive ...