997 resultados para GONZALEZ BALCARCE, ANTONIO


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Success in the mobile search market will come to those who provide value-added apps that exploit unique mobile functionalities, especially those related to personalized and context-based services.

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The debate on network neutrality has reached sufficient notoriety to eliminate the need for detailed explanation. A simple definition will suffice: “network neutrality” is understood as the principle by which the owners of broadband networks would not be allowed to establish any type of discrimination or preference over the traffic transmitted through them

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It has taken more than a decade of intense technical and market developments for mobile Internet to take off as a mass phenomenon. And it has arrived with great intensity: an avalanche of mobile content and applications is now overrunning us. Similar to its wired counterpart, wireless Web users will continuously demand access to data and content in an efficient and user-friendly manner.

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ICTs account nowadays for 2% of total carbon emissions. However, in a time when strict measures to reduce energyconsumption in all the industrial and services sectors are required, the ICT sector faces an increase in services and bandwidth demand. The deployment of NextGenerationNetworks (NGN) will be the answer to this new demand and specifically, the NextGenerationAccessNetworks (NGANs) will provide higher bandwidth access to users. Several policy and cost analysis are being carried out to understand the risks and opportunities of new deployments, though the question of which is the role of energyconsumption in NGANs seems off the table. Thus, this paper proposes amodel to analyze the energyconsumption of the main fiber-based NGAN architectures, i.e. Fiber To The House (FTTH) in both Passive Optical Network (PON) and Point-to-Point (PtP) variations, and FTTx/VDSL. The aim of this analysis is to provide deeper insight on the impact of new deployments on the energyconsumption of the ICT sector and the effects of energyconsumption on the life-cycle cost of NGANs. The paper presents also an energyconsumption comparison of the presented architectures, particularized in the specific geographic and demographic distribution of users of Spain, but easily extendable to other countries.

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El objetivo de este artículo es presentar las opciones que están considerándose (incluso ya aplicándose) para la reforma de los mecanismos de gestión del espectro radioeléctrico y evaluar su conveniencia y oportunidad. En concreto, se describen y valoran los tres cambios más profundos en este posible cambio de modelo: autorización del mercado secundario, utilización de la subasta para la asignación primaria y liberalización plena del uso del espectro. El proceso ya en marcha de introducción de estos cambios en España es también analizado.

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La detección temprana del final de la vida útil de un árbol singular es fundamental para la evaluación de los síntomas relacionados con la seguridad, la estabilidad y la integridad del árbol, así como de los riesgos asociados cuando se encuentran cerca de edificios o existe tránsito de personas bajo el mismo. En ocasiones, la situación de los árboles protegidos obliga a decidir sobre su viabilidad en poco tiempo, puesto que un árbol puede morir en pie debido a senescencia intrínseca, por la incidencia de agentes causantes de estrés y por incapacidad para competir con éxito por los recursos. Generalmente, los árboles singulares son monumentales y de edad avanzada, y todos los agentes externos potencialmente causantes de daños son relevantes y deben vigilarse.

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Identificar, cuantificar y gestionar el riesgo económico asociado a las decisiones de inversión supone un desafío para ejecutivos e inversores del sector minero. Sin embargo, en gran parte de los estudios de factibilidad de proyectos mineros, la evaluación de riesgo se basa en la modelización estocástica de la rentabilidad, que aportan poco en los aspectos de gestión del riesgo y toma de decisión. En mi presentación, les planteo un nuevo enfoque en que el riesgo se evalúa en cada etapa de la cadena de valor del proyecto, desde la exploración hasta el cierre de la mina, lo que permite la gestión de riesgo como un proceso escalonado de optimización del valor añadido.

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Next generation access networks (NGAN) will support a renewed electronic communication market where main opportunities lie in the provision of ubiquitous broadband connectivity, applications and content. From their deployment it is expected a wealth of innovations. Within this framework, the project reviews the variety of NGAN deployment options available for rural environments, derives a simple method for approximate cost calculations, and then discusses and compares the results obtained. Data for Spain are used for practical calculations, but the model is applicable with minor modifications to most of the rural areas of European countries. The final part of the paper is devoted to review the techno-economic implications of a network deployment in a rural environment as well as the adequacy and possible developments of the regulatory framework involved

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Next generation access networks (NGAN) will support a renewed communication structure where opportunities lie in the provision of ubiquitous broadband connectivity, a wide variety of new applications, appealing contents and a general support to the sustainable growth of diverse sectors. From their deployment it is expected a wealth of innovations, jobs creation and a new wave of economic growth. In this paper we discuss which could be the role of Hybrid Fibre Coax (HFC) in the Next Generation Access Network (NGAN) roadmap. Thus, we propose a simplified model for making approximate cost calculations for HFC deployment based on the geographic and sociodemographic characteristics of Spain. Considering the latest evolution of HFC based on DOCSIS 3.0 from integrated (I-CMTS) towards modular (M-CMTS), the results from the model are compared with the most competitive NGAN for ultrabroadband speeds: Fibre to the Home (FTTH) based on Gigabitcapable Passive Optical Networks (GPON)

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Mobile games are a prime example of a successful mobile application and demonstrate the increasing range of platforms for the media and entertainment industries. Against this convergent background, this paper introduces the basic features of the mobile gaming market and its industrial ecosystem together with its main actors and activities. The focus of the paper lies in the challenges ahead for the evolution of mobile applications into a potentially dominant game platform and the possible disruptions along this road. The deep personal relationships between users and their mobile devices are considered to further explore the link between mobile games, players’ strategies and pending techno-economic developments. The paper concludes with a brief discussion of some policy options to assist with the development of this domain.

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This article aims to review the technological and socio-economic conditions which will influence the development of the mobile search market.

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The award of the digital dividend can consolidate auctions as the preferred mechanism for spectrum allocation. Knowing in advance an estimate of what the results of an auction with these characteristics could be would be unquestionably useful for those in charge of designing the process, even if at the end another method such as a beauty contest is chosen. This article provides a simulation of a digital dividend auction in a major-type European country. In one of the scenarios, the spectrum is not pre-allocated to any service in particular (service neutrality) while in the remaining four, blocks of spectrum are pre-allocated to DTT, mobile multimedia and mobile broadband communications. The results of the simulations reveal that the service neutrality scenario maximizes revenues for the seller and that, in general, DTT operators would seem to have fewer opportunities as the spectrum packaging is less protective for them.

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Les jeux sur mobile sont un exemple majeur à la fois d'une application réussie sur les mobiles et du nombre croissant de plates-formes pour les médias et les industries de loisirs. Explorant cette convergence, l'article analyse les caractéristiques principales du marché des jeux sur mobile et de son écosystème industriel, ses activités et acteurs principaux. L'article se concentre sur le rôle des différentes plates-formes de logiciels et sur les défis et opportunités futures pour les développeurs de jeux sur mobile dans un nouveau scénario dominé par les plates-formes de mobile.

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Immersion and interaction have been identified as key factors influencing the quality of experience in stereoscopic video systems. The work presented here aims to create a new paradigm for 3D Multimedia consumption exploiting these factors in order to increase user involvement. We use a 5-sided CAVETM environment to support 3D panoramic video reproduction, real-time insertion of synthetic objects into the three-dimensional scene and real-time user interaction with the inserted elements. In this paper we describe our system requirements, functionalities, conceptual design and preliminary implementation results emphasizing the most relevant challenges accomplished. The focus is on three main issues: the generation of stereoscopic video panoramas; the synchronous reproduction of immersive 3D video across multiple screens; and, the real-time insertion algorithm implemented for the integration of synthetic objects into the stereoscopic video. These results have been successfully integrated into the graphic engine managing the operation of the CAVETM infrastructure.

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Which is the economic value of personal information? -How the exchange of information is benefiting society and the economy -How companies create value from personal information (by providing new services or servicing better an existing need). -The mechanisms by which personal information exchange creates economic value - How the level of privacy protection influences value creation in different markets