Light coloured and draining wearing courses for low-impact urban pavements

Urban health and well-being are becoming current issues of modern cities due to local climate change and environmental noise. The Urban Heat Island and the Urban Noise Island have a direct impact on the economic, social, and environmental aspects of urban life, negatively affecting the well-being of worldwide citizens. The present research is focused on the study of innovative materials employed in the production of wearing course mixtures aiming to mitigate these phenomena. In particular, a synthetic transparent binder substituting bitumen and recycled aggregates produced from construction and demolition waste. Four mixtures were analysed. Among them, Mix 1 and Mix 2 are conventional wearing courses. The first is exclusively made of natural aggregates, while the second is constituted of 45 % of recycled aggregates (RA). Mix 3 and Mix 4 are draining wearing courses and, in this case, Mix 4 was produced by using 55 % of RA. Laboratory tests were required to fully characterize all the produced samples, allowing a proper comparison of results. Overall, all the mixtures studied provide prominent results suggesting potential applications of these innovative wearing courses in cycle lanes, historical centres, plazas, and parking lots. Among the conventional mixtures, Mix 2 is the most likely to assure the best performance in terms of road safety, efficiency, and durability while as far as the draining mixtures are concerned, Mix 4 is preferable due to its high content of recycled aggregates.

Essays on economic regulation

It is known that stock prices of public listed regulated companies react to price revisions by the regulator, and that the information conveyed by this price reaction might be used by the regulator on the contract design. This paper builds on Laffont and Tirole's (1986) regulation model with observable costs to better understand the effects the inclusion of the stock market can have on the regulator-regulated firm relationship. Our numerical simulations show that the inclusion of the market induce more powerful incentive schemes, with higher cost-reducing efforts, smaller informational rent by the firms and higher overall social welfare. In particular, we find that when the regulator is committed, the presence of short-term investors can make the first-best contract feasible, and that in the non-commitment case the market affects the firm's strategy by making it reveal more information about its cost than it normally would.

How Social is European Integration? Bruges European Economic Policy (BEEP) Briefing 18/2007

The social dimension of the internal market or of the EU more generally has recently been under quite fundamental attack. Calls for 'Europe' to be 'more social' have been heard repeatedly. Witness the polarized debates about the services directive, the anxieties concerning several ECJ cases about what limitations of the free movement of workers (posted or not) are justified or the assertion of a 'neo-liberal agenda' in Brussels disregarding or eroding the social dimension. This BEEP Briefing paper takes an analytical approach to these issues and to the possible 'framing' involved. Such an analysis reveals a very different picture than the negative framing in such debates has it: there is nothing particular 'a-social' about the internal market or the EU at large. This overall conclusion is reached following five steps. First, several 'preliminaries' of the social dimension have to be kept in mind (including the two-tier regulatory & expenditure structure of what is too loosely called 'social Europe' ) and this is only too rarely done or at best in partial, hence misleading, ways. Second, the social acquis at EU and Member States' levels is spelled out, broken down into four aspects (social spending; labour market regulation; industrial relations; free movements & establishment). Assessing the EU acquis in the light of the two levels of powers shows clearly that it is the combination of the two levels which matters. Member States and e.g. labour unions do not want the EU level to become deeply involved ( with some exceptions) and the actual impact of free movement and establishment is throttled by far-reaching host-country control and the requirement of a 'high level of social protection' in the treaty. Third, six anxieties about the social dimension of the internal market are discussed and few arguments are found which are attributable to the EU or its weakening social dimension. Fourth, another six anxieties are discussed emerging from the socio-economic context of the social dimension of the EU at large. The analysis demonstrates that, even if these anxieties ought to be taken serious, the EU is hardly or not the culprit. Fifth, all this is complemented by a number of other facts or arguments strengthening the case that the EU social dimension is fine.