Does European cohesion policy reduce regional disparities? An empirical analysis

European cohesion policy entails predominantly the funding of infrastructure and employment projects in lagging regions of EU Member States. It involves the distribution of more than 35 billion euro annually, making it the second most important EU policy in budgetary terms. Its main aim is to reduce regional disparities in regional welfare. This paper investigates to what extent European cohesion policy achieves this aim. The data reveal poorer regions do tend to receive more cohesion support. The policy thus satisfies a necessary condition for its effectiveness. It remains, however, unclear whether cohesion support significantly increases economic growth. In particular, the more independent convergence one presupposes, the less well cohesion support appears to work. This points at a clear trade-off: either one accepts that regional disparities are here to stay, or one concludes that cohesion policy fails.

New economic geography, empirics, and regional policy

There are doubts about the effectiveness of regional policy. Well known are the fruitless attempts of Italy to bridge the gap between the Mezzogiorno and the North, of Germany to bridge the gap between the Neue Länder and the West, and of the European Commission to reduce regional disparities in general. We validate one explanation: agglomeration advantages lock business activity in relatively prosperous core regions, even though wages – and thus production costs – tend to be higher there. We set off from the ‘New Economic Geography’, a set of general equilibrium models that focus on location choice. Theory, descriptive statistics, and econometric analysis support the conclusion that the European economic geography is characterized by a network of local and stable core periphery systems. This implies that disparities between core regions and their peripheries at a (sub) provincial level of regional aggregation are with us to stay, as regional policy targeted on peripheries tends to be insufficient to counter centripetal market forces. Moreover, even if such policy has an impact, it may be adverse, as core regions may benefit disproportionately in the long run. A focus of regional policy on local agglomerations, which have a realistic chance to hold on to economic activity, is therefore desirable.

Aquatic Exercise Programs for Children and Adolescents with Cerebral Palsy: What Do We Know and Where Do We Go?

Aquatic exercise programs may be a beneficial form of therapy for children and adolescents with cerebral palsy (CP), particularly for those with significant movement limitations where land-based physical activity is difficult. The most recently published systematic review (2005) on aquatic interventions in children with CP found supportive but insufficient evidence on its effectiveness. The aim of this paper is to review recently published literature since 2005 with a focus on aquatic exercise for children with CP. In total, six new studies were published with a main focus on aerobic aquatic interventions in higher functioning children and adolescents with CP. Swimming is one of the most frequently reported physical activities in children and adolescents with CP. Therefore, information on its safety and benefits is highly needed, for those with more severe CP in particular. Research design issues are discussed to help guide future research and practice

Editorial : Current concepts and recent advances on pediatric appendicitis

Non peer reviewe

Cooperation in a modified version of the finitely repeated prisoners' dilemma game

In this paper we consider a series of finitely repeated prisoners' dilemma games in which the payoff the players receive in a period depends on how they have played the game in the past. We show that this modification of the finitely repeated prisoners' dilemma game makes cooperation a feasible equilibrium configuration in the beginning of play

Equal rules or equal opportunities? Demystifying level playing field

Pleas for a level playing field, for instance in international trade, are often not well-founded. This is because it is not exactly clear what a 'level playing field' means. But even if it would be clear what the plea would imply, a level playing field is not always desirable from an economic perspective. To clarify the meaning of 'a level playing field' we introduce two specifications of the concept. First, a rules-based level playing field, which means that all firms in a market are treated the same in equal circumstances with regard to legislation, taxes, subsidies etcetera. Second, an outcome-based level playing field, which means that all firms in a market have the same expected profit. This means that, in case firms are heterogeneous, the government compensates the disadvantaged firms (for instance with subsidies). The first conclusion in the report is that a rules-based level playing field is desirable, although there are reasons to deviate from this assumption. The second conclusion is that it is never desirable to pursue a fully outcome-based level playing field, but that it may be desirable to level the playing field to a certain extent in the case of market failure. In case of market failure it is preferable to use symmetric rules (equal for all firms), in stead of asymmetric rules (favouring some firms). The report introduces a framework with questions that can help policymakers analyse level playing field issues. The framework makes clear that in general one cannot tell�whether a plea for a 'level playing field' is justified or not. It is necessary to focus on the policy issues hidden behind the plea, i.e. policy issues concerning market failure, dynamic efficiency, redistribution of income and differences in preferences between countries.

Failed theories of superconductivity

Almost half a century passed between the discovery of superconductivity by Kamerlingh Onnes and the theoretical explanation of the phenomenon by Bardeen, Cooper and Schrieffer. During the intervening years the brightest minds in theoretical physics tried and failed to develop a microscopic understanding of the effect. A summary of some of those unsuccessful attempts to understand superconductivity not only demonstrates the extraordinary achievement made by formulating the BCS theory, but also illustrates that mistakes are a natural and healthy part of the scientific discourse, and that inapplicable, even incorrect theories can turn out to be interesting and inspiring.Comment: 14 pages, 3 figures (typos fixed), to appear in: Bardeen Cooper and Schrieffer: 50 YEARS, edited by Leon N Cooper and Dmitri Feldma

Early Permian Zircon Ages from the \u3cem\u3eP. confluens\u3c/em\u3e and \u3cem\u3eP. pseudoreticulata\u3c/em\u3e Spore-Pollen Zones in the Southern Bonaparte and Canning Basins, Northwestern Australia

The Pseudoreticulatispora confluens–P. pseudoreticulata spore-pollen zonal datum typically coincides with the end of widespread Permian glacial deposits in Western Australia. Although previously attributed to the mid-Sakmarian, chemical abrasion isotope dilution thermal ionisation mass spectrometry (TIMS) dating of zircons from volcanic tuffs in the Ditji Formation of the Bonaparte Basin and the Grant Group in the Canning Basin point to an Asselian age of about 295.25 Ma for this datum. All dated zircons from the Ditji Formation came from petroleum well cuttings but the accompanying palynology was mostly from sidewall cores; however, all Grant Group samples were from conventional core. TIMS dates from the Ditji Formation range in age from 295.2 to 292.7 Ma whereas the only productive tuff from the Grant Group yielded a 296.26 Ma date. By comparison, there are no zircon dates to constrain the onset of glacial deposition in Australia. The Bonaparte Basin ages overlap with those for the Edie Tuff (296.1–294.5 Ma) in Queensland’s Galilee Basin, approximately 2000 km to the southeast, which also lies close to the base of the P. pseudoreticulata Zone. To date the only fossil group within the P. confluens Zone in Western Australia to provide independent age control, albeit loosely, are goniatites from the northern Perth Basin (Uraloceras irwinense and Juresanites jacksoni) that have consistently been attributed to the Sakmarian; these require a reassessment of their affinity with Russian faunas and therefore to global stratotypes. The position of the Carboniferous–Permian boundary is elusive in Australia and will remain so until additional volcanic tuffs containing young datable zircons are found; however, spore-pollen and zircon dates from Namibia place this boundary within the P. confluens Zone