4,384 research outputs found

    "SATISFACTION AND E-QUALITY: SOME EVIDENCE FROM INTERNET BANKING"

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    The perceived quality has been described as a major determinant of the consumer satisfaction. We have integrated the perceived utility construct from Technology Acceptance Models (TAM) with perceived quality from SERVQUAL literature to describe perceived quality in eBank context. A specific scale has been developed and applied to an online survey at a major Portuguese eBank. 754 valid observations had been collected and structural equation modelling methodology was used. Perceived quality has been formalized as a second order construct and the results shows that it is manifested on products and services, convenience and trust in the information.eBank, private consumer behaviour, satisfaction, perceived quality, structural equation modelling.

    Enabling Practical IPsec authentication for the Internet

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    On the Move to Meaningful Internet Systems 2006: OTM 2006 Workshops (First International Workshop on Information Security (IS'06), OTM Federated Conferences and workshops). Montpellier, Oct,/Nov. 2006There is a strong consensus about the need for IPsec, although its use is not widespread for end-to-end communications. One of the main reasons for this is the difficulty for authenticating two end-hosts that do not share a secret or do not rely on a common Certification Authority. In this paper we propose a modification to IKE to use reverse DNS and DNSSEC (named DNSSEC-to-IKE) to provide end-to-end authentication to Internet hosts that do not share any secret, without requiring the deployment of a new infrastructure. We perform a comparative analysis in terms of requirements, provided security and performance with state-of-the-art IKE authentication methods and with a recent proposal for IPv6 based on CGA. We conclude that DNSSEC-to-IKE enables the use of IPsec in a broad range of scenarios in which it was not applicable, at the price of offering slightly less security and incurring in higher performance costs.Universidad de Montpellier IIPublicad

    Synthesis, structural characterization and broadband ferromagnetic resonance in Li ferrite nanoparticles

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    Producción CientíficaLithium ferrites are well known materials due to its numerous technological applications especially in microwave devices. Lithium ferrite nanoparticles were prepared by sol-gel technique by means of Pechini method, and then annealed at different temperatures in 250–1000 °C range. XRD confirms spinel formation with particles sizes in 15–700 nm range, with increased size with annealing temperature, whereas FTIR and Raman measurement confirm that single phase lithium ferrite with ordered cationic structure is obtained. Microwave magnetoabsorption data of the annealed lithium ferrite nanoparticles were obtained with a broadband system based on a network analyzer that operates up to 8.5 GHz. At fields up to 200 mT we can observe a broad absorption peak that shifts to higher frequencies with magnetic field according to ferromagnetic resonance theory. The amplitude of absorption, up to 85%, together with the frequency width of about 5.5 GHz makes this material suitable as wave absorber. FMR parameters like resonance field, linewidth and broadening are analyzed in order to obtain the characteristic parameters and analyze the microwave behaviour.Ministerio de Economía, Industria y Competitividad ( project MAT2016-80784-P

    Gustau NerĂ­n: Guinea Ecuatorial, historia en blanco y negro

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    Review of: Gustau NerĂ­n, Guinea Ecuatorial, historia en blanco y negro. Barcelona, PenĂ­nsula, 1998, 254 pp

    New foundations of study for the wrist-guards of the Spanish Plateau. Functional analysis as an approach to a debate

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    Los brazales de arquero son un elemento característico del ámbito funerario de la Prehistoria reciente, concretamente del periodo comprendido entre el Campaniforme y el Bronce Pleno. Pese a ello han sido objeto de estudios y descripciones sucintas que no abordaban su interpretación. La hipótesis más aceptada sobre su uso es aquella que lo considera un elemento de protección del antebrazo en el tiro con arco. No obstante, otras hipótesis defienden desde antiguo su empleo como afilador/pulidor de elementos metálicos. Desde la Arqueología Experimental y la Traceología hemos abordado este debate, estudiando las huellas de uso dejadas por ambas actividades, e incluso analizando posibles residuos, lo que nos han permitido determinar la función de algunos brazales arqueológicosWrist-guards have always been a characteristic feature of prehistoric burials, more specifically between Bell-Beakers and the Middle Bronze Age. However, their study and description were usually brief and did not deal with their interpretation. The most accepted hypothesis is their function as forearm protector in archery. Nevertheless, other hypotheses argue their use as sharpeners/polishers of metallic objects. With the aid of the Experimental Archaeology and the Traceology we have contrasted both interpretations, studying the use-wear left by them, analysing also eventual residues. This permits to determine the function of some of the archaeological wrist-guards of this sampl

    Gonzalo Navajas: Más allá de la posmodernidad. Estética de la nueva novela y cine españoles

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    Review of: Gonzalo Navajas. Más allá de la posmodernidad. Estética de la nueva novela y cine españoles. Barcelona, EUB, 1996, 191 pp
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