13,796 research outputs found
Schooling, learning on-the-job, earnings and inequality
Why might people in poor countries leave school earlier and invest less in learning on-thejob than people in rich ones? How do these human capital decisions impact on inequality? To give quantitative answers to these questions, I build an overlapping generations model with optimal human capital accumulation and a given distribution of abilities. Variation in mortality and population growth rates can generate large variability in schooling decisions, earnings profiles and measures of inequality. High mortality and population growth rates are shown to produce comparatively little investment in human capital, flat earnings profiles and low inequality, both within and across cohorts.human capital, earnings profiles, schooling, inequality.
Temperature and rate dependent multi-scale shear modelling of molten thermoplastic advanced composties
Press forming a 0/90 cross-ply advanced thermoplastic composite using the double-dome benchmark geometry
A pre-consolidated thermoplastic advanced composite cross-ply sheet comprised of two uniaxial plies orientated at 0/90° has been thermoformed using tooling based on the double-dome bench-mark geometry. Mitigation of wrinkling was achieved using springs to apply tension to the forming sheet rather than using a friction-based blank-holder. The shear angle across the surface of the formed geometry has been measured and compared with data collected previously from experiments on woven engineering fabrics. The shear behaviour of the material has been characterised as a function of rate and temperature using the picture frame shear test technique. Multi-scale modelling predictions of the material’s shear behaviour have been incorporated in finite element forming predictions; the latter are compared against the experimental results
Press forming the double-dome benchmark geometry using a 0/90 uniaxial cross-ply advanced thermoplastic composite
The DICEMAN description schemes for still images and video sequences
To address the problem of visual content description, two Description Schemes (DSs) developed within the context of a European ACTS project known as DICEMAN, are presented. The DSs, designed based on an analogy with well-known tools for document description, describe both the structure and semantics of still images and video
sequences. The overall structure of both DSs including the various sub-DSs and descriptors (Ds) of which they are composed is described. In each case, the hierarchical sub-DS for describing structure can be constructed using
automatic (or semi-automatic) image/video analysis tools. The hierarchical sub-DSs for describing the semantics, however, are constructed by a user. The integration of the two DSs into a video indexing application currently
under development in DICEMAN is also briefly described.Peer ReviewedPostprint (published version
El reto de vincular reputación online de destinos turísticos con competitividad
The aim of this study is to evidence how 2.0 conversations in social media impact the reputation of destinations. Additionally, the influence of co-creation practices is analysed. The five most competitive destinations worldwide have been chosen for the research. This paper demonstrates that monitoring social media is a challenge in tourism and is a strategic tool to support process decision making and for destination brand building in a sustainable way. Currently, there are several monitoring and analytic tools, but there is a lack of models to systematise and harness it for the Destination Management Organization (DMOs). In conclusion, how tourists play the main role in the competitiveness of Destinations with their experiences and opinions are considered, along with some keys for successful management of social media are given in the view of the results.info:eu-repo/semantics/publishedVersio
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