80 research outputs found

    Seven international cases of water remunicipalisation

    Get PDF
    SolĀ·licitant de lā€™informe: Barcelona Cicle de l'Aigua, S.A

    Deriving Machine to Machine (M2M) Traffic Model from Communication Model

    Get PDF
    Ā© 2018 IEEE. The typical traffic models proposed in literature can be considered as heuristic models since they only reflect the stochastic characteristic of the generated traffic. In this paper, we propose a model for M2M communications that generates the traffic. Therefore, the proposed model is able to capture a wider picture than the state-of-the-art traffic models. The proposed model illustrates the behaviour of M2M uplink communication in a network with multiple-access limited information capacity shared channels. In this paper, we analyzed the number of transmitted packets using the traffic model extracted from our proposed communication model and compared it with the state-of- the-art traffic models using simulations. The simulation results show that the proposed model has a significantly higher accuracy in estimating the number of transmitted packets compared with the liteature model

    A firm-level dataset for analyzing entry, exit, employment and R&D expenditures in the UK: 1997-2012

    Get PDF
    This data article is related to the research article entitled ā€œInverted-U relationship between R&D intensity and survival: Evidence on scale and complementarity effects in UK dataā€ (Ugur et al., In press) [1]. It describes the trends in R&D expenditures, employment of R&D personnel and firm entry and exit rates in the UK from 1998 to 2012. We also provide statistics on net employment creation and net R&D investments due to firm entry and exits. In addition, we compute the correlation coefficients between entry and exit rates at the two digit industry level so as to examine whether the correlations are contemporaneous or inter-temporal. Finally, we provide information about the underlying dataset to which secure access is available through UK Data Service Archive 7716 at http://dx.doi.org/10.5255/UKDA-SN-7716-1
    • ā€¦
    corecore