Search results for "Power"

Structural analysis, phase stability and electrochemical characterization of Nb doped BaCe0.9Y0.1O3−x electrolyte for IT-SOFCs

2012

Abstract To improve the chemical stability of high temperature proton conductors based on barium cerate, electrolyte powders doped with different amounts of niobium were synthesized by the citrate–nitrate auto-combustion method. Pure single phases of BaCe 0.9− x Nb x Y 0.1 O 3− x (BCYN, 0.03 ≤  x  ≤ 0.12) were obtained by thermal treatment at 1000 °C. Sintering at 1450 °C for 10 h produced dense pellets. X-ray absorption spectroscopy allowed to define the dopant ion insertion site and the co-dopant valency. Treatments in pure CO 2 atmosphere at 700 °C for 3 h and subsequent XRD analysis were carried out to probe the chemical stability of the produced electrolytes. The influence of the prese…

THE IMPORTANCE OF ESTABLISHING CUSTOMER EXPERIENCES

2012

Recently, companies have apprehended the fact that customers want more than merely products or services and have proceeded in providing value creation through customer experiences. Experience marketing has emphasized the need to stimulate, entertain and affect consumers at an emotional level in order to create the premises for an experience in consumption. The repercussions for the experience marketing approach can range from brand advocacy, word-of-mouth, to loyalty and motivation to buy such an experience. Therefore, companies need to manage these experiences and pay attention to the moments of truth the customer has with the organization in question.

Protons for Jehovah’s Witnesses? How press coverage of Ashya King’s case brought proton beam therapy to the public arena

2018

The case of Ashya King, the child brain tumour patient whose parents took from a British hospital so he could be treated with Proton Beam Therapy (PBT) abroad, contributed to popularize that technology among a general audience. Through the content analysis of British and Spanish press coverage (N=329), our research shows that proton therapy enjoyed scarce coverage in the analysed media before Ashya King’s case. His story, magnified due to the fact that his parents were Jehovah’s witnesses was a cause both for public concern and media sensationalism. We show that the case brought PBT into the public sphere and, consequently, contributed to create a demand for facilities that offered this the…

Reliability of measurements during countermovement jump assessments: Analysis of performance across subphases

2020

The aim of this study was to examine the reliability of performance measures in the different phases and sub-phases of the countermovement jump (CMJ). Seventeen male athletes competing at a regional level completed 204 valid trails consisting of the execution of maximal hands-on-waist CMJs performed on a force platform. The vertical ground reaction force (VGRF) data obtained at a sampling frequency of 1000 Hz were used to calculate performance-derived variables and determine key points and jump sub-phases. The relative reliability of 92 variables was assessed using the intraclass correlation coefficient (ICC) from a two-way mixed effects model analyzing the time, force, power, velocity, and…

Face and politeness in the dialogues of mother and daughter of the comedy series Absolutely Fabulous

1999

Neurophysiological markers of subjective memory complaints in healthy people

2022

Con el envejecimiento de la población es importante comprender los cambios neurofisiológicos que se producen. En este contexto, las quejas subjetivas de la memoria (QSM) se están convirtiendo en un tema de interés ya que se han considerado un factor de riesgo para desarrollar trastornos relacionados con demencias como el deterioro cognitivo leve y enfermedad de Alzheimer. Por lo tanto, es importante investigar los biomarcadores tempranos para la detección y la planificación de los tratamientos. En este sentido, el procesamiento de emociones faciales es una importante función cognitiva comúnmente afectada en personas con trastornos relacionados con demencias que podría ayudar a analizar camb…

Family history of type 2 diabetes and altered maximal aerobic capacity in elite young athletes: a cross-sectional study.

2008

Aim. Family history of type 2 diabetes is a predictive risk factor of illness in sedentary subjects and induces early phenotypic and metabolic alterations. The aim of this study was to determine whether a family history of diabetes in young male athletes had an effect on metabolic functional parameters. Methods. The study population was 42 young male athletes with or without a family history of type 2 diabetes. Anthropometric parameters, body composition, and maximal aerobic capacity (V̇O2max) were assessed. Results. V̇O2max was lower in the 13 athletes with a family history of diabetes (FH+) than in the 29 athletes without a family history of the disorder (FH-) matched for kilogram of body…

Społeczna percepcja energetyki wiatrowej na przykładzie farmy wiatrowej Kuniów

2017

Przeprowadzono badania ankietowe wśród mieszkańców wsi Kuniów w południowo-zachodniej Polsce, dotyczące pozytywnych i negatywnych aspektów budowy oraz funkcjonowania farmy wiatrowej. Ocenie poddano farmę 2 elektrowni wiatrowych o mocy 2 MW każda, z wysokością wież 110 m, długością rotorów 45 m i odległością od zabudowy 620 i 1300 m. W ocenie ankietowanych głównymi pozytywnymi aspektami rozwoju energetyki wiatrowej są: czysta energia, tania energia oraz zwiększenie możliwości rozwoju gminy i wsi z podatków. Największe zagrożenia obejmują: degradację krajobrazu, zabijanie ptaków i nietoperzy, utratę siedlisk zwierząt, hałas, infradźwięki oraz wibracje. Postrzeganie energetyki wiatrowej po wyb…

Emulating the Effects of Radiation-Induced Soft-Errors for the Reliability Assessment of Neural Networks

2021

International audience; Convolutional Neural Networks (CNNs) are currently one of the most widely used predictive models in machine learning. Recent studies have demonstrated that hardware faults induced by radiation fields, including cosmic rays, may significantly impact the CNN inference leading to wrong predictions. Therefore, ensuring the reliability of CNNs is crucial, especially for safety-critical systems. In the literature, several works propose reliability assessments of CNNs mainly based on statistically injected faults. This work presents a software emulator capable of injecting real faults retrieved from radiation tests. Specifically, from the device characterisation of a DRAM m…

Voltage source inverters: An easy approach for fast fault detection

2013

Fault-tolerant converters have been widely investigated for years and nowadays an extensive technical literature on this field exists. This paper presents a novel fault detection algorithm based on a simple geometrical approach. In the algorithm analysis both the case of faults in single device and the loss of an entire inverter leg have been considered. The proposed methodology is characterized by simplicity, low computational and implementation effort with a consequent fast execution and easy control integration. The suggested algorithm is verified by means of experimental tests and reveals a valid and suitable alternative to the existing state of the art in the field of inverter fault de…