Complexity bounds on supermesh construction for quasi-uniform meshes

Projecting fields between different meshes commonly arises in computational physics. This operation requires a supermesh construction and its computational cost is proportional to the number of cells of the supermesh $n$. Given any two quasi-uniform meshes of $n_A$ and $n_B$ cells respectively, we show under standard assumptions that n is proportional to $n_A + n_B$. This result substantially improves on the best currently available upper bound on $n$ and is fundamental for the analysis of algorithms that use supermeshes

Wage Inequality in Europe: the Role of Labour Market and Redistributive Institutions

This paper aims at a deeper understanding of the determinants of wage inequality, the most important component of income inequality, in the European countries. We investigate on how wage inequality is affected by government regulation in the labour market and by the redistribution operated by the social protection system, also controlling for the impact of the effect of skillpremium related to technical change. To explain the continuously rising wage inequality in Europe, two regression models of wage inequality are employed each one using a different databases. In the last period, the overall degree of governance of the labour markets does not substantially change, but a different balance between decreasing labour market regulation and increasing redistribution manifest across Europe. While job and wage protection has been eased, income redistribution was strengthened, though its size differs across four clusters of European countries, depending on the majority voting preference for “risk insurance”. Overall, institutional substitution between labour market regulation and income redistribution seems to back the upward trend in wage inequality

Globalization and public administration: a complex relationship

The paper examines the relationship between globalization and public administration through economic theory principles and an example. Starting from the consideration of early concerns about globalization, it argues that although the size of government has rarely declined, its power has been eroded, making room on the one hand to the quest for global public goods, while on the other hand urging for more local public goods and decentralization. University education, mainly publicly supplied in Italy as well as in many European countries, exemplifies the awkwardness of introducing best practices in a context of asymmetric information with many idiosyncratic features.globalization,university education,public goods,public administration

Do Preferences in EU Member-States Support Fiscal Federalism?

The aim of this paper is to assess preferences with respect to fiscal federalism in EU member-states. In particular, we address the question of whether each EU country would - if the decision were taken by 'majority voting' - or should – if the decision were takenby a social planner – favour centralisation or decentralisation of mutual risk insurance. Our analysis implicitly assumes that each EU median voter or each EU social planner takes the composition of the fiscal federation as given, leaving aside the issue of how manyand which countries take part in the optimal EU fiscal federation. With majority voting, the median voter 'individual' and the median voter 'region' in each EU country are decisive. In this situation, the national (federal) government level for redistribution is preferredif the national ratio between median income and mean income is lower (higher) than the EU ratio. In contrast, were the decision taken by the social planner, the choice in favour of centralisation(decentralisation) would be derived from the maximisation of a social welfare function. In terms of European regions, the index of 'jurisdictional distance' indicates that social welfare ismaximised by (de)centralised redistribution whenever intra -national income dispersion is greater (smaller) than inter-national income dispersion. The results show that, for the large majority ofEU member-states, when one of the two decision-makers prefers centralisation (decentralisation), the other has the opposite preference; moreover, the chosen government level is in most cases thesame for interpersonal redistribution and inter-jurisdictional redistribution: what is good for the individual is also good for the nation.Income Distribution ; Public Choice ; Fiscal Federalism ; European Economics

The European Union's Institutional Design

The paper offers a theoretical appraisal of the various steps follow by the countries involved in the EU integration process. It shows that the extent to which the leaps to higher cohesion level in common policies have been achieved by the linkages between different games such that the common policies prove to be mutually advantageous across countries

Efficient white noise sampling and coupling for multilevel Monte Carlo with non-nested meshes

When solving stochastic partial differential equations (SPDEs) driven by additive spatial white noise, the efficient sampling of white noise realizations can be challenging. Here, we present a new sampling technique that can be used to efficiently compute white noise samples in a finite element method and multilevel Monte Carlo (MLMC) setting. The key idea is to exploit the finite element matrix assembly procedure and factorize each local mass matrix independently, hence avoiding the factorization of a large matrix. Moreover, in a MLMC framework, the white noise samples must be coupled between subsequent levels. We show how our technique can be used to enforce this coupling even in the case of non-nested mesh hierarchies. We demonstrate the efficacy of our method with numerical experiments. We observe optimal convergence rates for the finite element solution of the elliptic SPDEs of interest in 2D and 3D and we show convergence of the sampled field covariances. In a MLMC setting, a good coupling is enforced and the telescoping sum is respected.Comment: 28 pages, 10 figure

Prospects in MPGDs development for neutron detection

The aim of this document is to summarise the discussion and the contributions from the 2nd Academia-Industry Matching Event on Detecting Neutrons with MPGDs which took place at CERN on the 16th and the 17th of March 2015. These events provide a platform for discussing the prospects of Micro-Pattern Gaseous Detectors (MPGDs) for thermal and fast neutron detection, commercial constraints and possible solutions. The aim is to foster the collaboration between the particle physics community, the neutron detector users, instrument scientists and fabricants

The Uses and Abuses of the Euro in the Canadian Currency Debate. Jean Monnet/Robert Schuman Paper Series, Vol. 3 No. 3, August 2003

(From the introduction). In the late 1990s, some prominent Canadian economists – notably Thomas Courchene, Herbert Grubel, Richard Harris, and Robert Mundell – began arguing that a North American common currency would solve the problems underlying the growing gap between U.S. and Canadian real GDP per capita.1 They succeeded in provoking a lively economic policy debate that occurred in parallel with the launch of the euro. The purpose of this paper is to examine the uses – and abuses – of European parallels by both sides in the economic policy debate that peaked in the 1999-2001 period. The body of the paper begins by providing an understanding of the European case. Hence, the second section outlines our interpretation of the major developments in the birth of the euro. The third section, the core of the paper, examines in detail the use of European parallels in the Canadian currency debate. We start by providing a brief overview of the protagonists in the debate. We then continue by arguing that the euro provided a “temporal spur” for the Canadian discussion but that it was only one among several important factors. We argue further that the proponents of a North American common currency relied very little on the European experience to support their case for the need for a common currency. Where they did use the European experience, however, was in their analysis of the institutional form that a common currency in North America might take. We argue that the opponents of a North American common currency were correct in viewing this as an abuse of the European parallel. In the concluding fourth section, we summarize our findings and argue that the most important parallel between the European and North American forces for a common currency is that both were driven primarily by politics

Resisting globalization: voting power indices and the national interest in EU decision making

The European integration process can be regarded as an aspect of the overall process of globalization and at the same time as an attempt to reconcile the move towards standardization with the defence of national diversity. A central role in the effort to exploit the benefits of integration without hampering the national interest is the collective decision-making process in the EU shared by the Council and the Parliament, where national representatives struggle for the conquest of the \u201clion\u2019s share\u201d in the division of the surplus stemming from the compromise on common policies. The paper focuses on the rationale behind the various Indices of Voting Power (Penrose, Banzhaf, Shapley and Shubik, and Holler) which are the formal tools meant to understanding the coalition formation and assessing the probability of reaching an agreement. In the EU Council, although ministers tend to reach a broad consensus and explicit voting is rare, decision may be taken by qualified majority voting where countries are assigned weights reflecting their size. This practice has often been objected on the grounds that the potential emergence of permanent coalitions would prevent countries from being adequately represented, and eventually a different rule was proposed. The pros and cons of the newly proposed system are analysed through the computation of the Indices of Voting Power for the EU Council and Parliament