Existence of Minimizers for Non-Level Convex Supremal Functionals

The paper is devoted to determine necessary and sufficient conditions for existence of solutions to the problem ${\rm inf}{{\rm ess sup}_{x \in \Omega} f(\nabla u(x)): u \in u_0 + W^{1,\infty}_0(\Omega)}$ when the supremand $f$ is not necessarily level convex. These conditions are obtained through a comparison with the related level convex problem and are written in terms of a differential inclusion involving the boundary datum. Several conditions of convexity for the supremand $f$ are also investigated

Retrospective study of the association between neutering status and changes secondary to degenerative mitral valve disease

Dissertação de Mestrado Integrado em Medicina VeterináriaMyxomatous mitral valve disease is the most common cardiovascular disease reported in dogs. Although many patients may remain asymptomatic, some of them progress to left-sided congestive heart failure and develop clinical signs. Little has yet been published regarding the possible influence of the neutering status on changes secondary to myxomatous mitral valve disease. This study aims to assess a possible correlation between neutering status and myxomatous mitral valve disease. A retrospective study was conducted and included all the cases diagnosed with myxomatous mitral valve disease, consulted at the Cardiology service of the University of Liverpool. To help assess the association between neutering status and cardiac remodelling, dogs were categorized into four groups: FE (female entire), FN (female neutered), ME (male entire) and MN (male neutered). Retrospective review of echocardiographic data, signalment, and underlying diseases were performed. Echocardiographic measurements were made through offline analysis. Echocardiographic measurements were then compared between groups. Five hundred and eighty-two dogs (n = 582) were included: female entire (n = 24), female neutered (n = 235), male entire (n = 115) and male neutered (n = 208). Left ventricular internal diameter at end diastole (LVIDd), left atrial dimension to the aortic root diameter (LA:Ao) and left atrium maximal dimension to the aortic root dimension (LAmax:Ao) were significantly different between ME and MN, with ME dogs presenting higher mean values for LVIDd and higher median LA:Ao and LAmax:Ao measurements. Left ventricular internal diameter at end systole (LVIDs) was not significantly different between ME and MN. There were no significant differences between FE and FN groups. This study shows that neutering status may influence the development of myxomatous mitral valve disease in male dogs and that entire male dogs could be at higher risk of developing cardiac remodelling secondary to myxomatous mitral valve disease. On the other hand, neutering status doesn’t seem to have an influence on disease progression in female dogs.RESUMO - Estudo retrospetivo da associação entre a esterilização e alterações secundárias à doença mixomatosa da válvula mitral - A doença mixomatosa da válvula mitral é a doença cardiovascular mais prevalente em cães. Apesar da maior parte dos pacientes permanecerem assintomáticos, alguns podem progredir para insuficiência cardíaca esquerda e desenvolver sinais clínicos. Até hoje, existem poucas publicações sobre o possível efeito que a esterilização possa ter no desenvolvimento da doença mixomatosa da válvula mitral. O objetivo deste estudo é avaliar se existe de facto uma relação entre a esterilização e a doença mixomatosa da válvula mitral. Foi realizado um estudo retrospetivo que incluiu todos os casos diagnosticados com doença mixomatosa da válvula mitral consultados no serviço de Cardiologia da Universidade de Liverpool. Para avaliar a relação entre a esterilização e a presença de remodelação cardíaca, os cães foram categorizados em quatro grupos: FE (fêmeas inteiras), FN (fêmeas esterilizadas), ME (machos inteiros) e MN (machos castrados). A história pregressa e os dados ecocardiográficos dos animais foram revistos retrospetivamente e as medidas ecocardiográficas foram obtidas por medição offline. Estas medições foram depois comparadas entre os diferentes grupos. Quinhentos e oitenta e dois cães (n = 582) foram incluídos: fêmeas inteiras (n = 24), fêmeas esterilizadas (n = 235), machos inteiros (n = 115) e machos castrados (n = 208). Nos resultados obtidos, o diâmetro interno do ventrículo esquerdo no final da diástole (LVIDd), o rácio átrio esquerdo-aorta (LA:Ao) e o rácio diâmetro máximo do átrio esquerdo-aorta (LAmax:Ao) foram estatisticamente significativos entre machos inteiros e machos castrados. Os machos inteiros apresentaram não só um LVIDd médio superior, como também uma mediana de LA:Ao e LAmax:Ao superior aos machos castrados. Ao mesmo tempo, o diâmetro interno do ventrículo esquerdo no final da sístole (LVIDs) não mostrou ser estatisticamente significativo entre machos inteiros e machos castrados e nenhum dos parâmetros ecocardiográficos anteriormente referidos revelou ser estatisticamente significativo entre fêmeas inteiras e fêmeas esterilizadas. Este estudo demonstra que a esterilização poderá influenciar o desenvolvimento da doença mixomatosa da válvula mitral e que os cães machos inteiros poderão apresentar um maior risco de desenvolver remodelação cardíaca secundária a esta doença. No entanto, a esterilização não aparenta influenciar a progressão desta doença em cadelas.N/

Assessing welfare impacts of some debt-consolidation episodes in the European Union

This paper aims at characterizing debt consolidation processes put forward by some European countries in order to assess welfare and, in particular, the inequality effects involved. For that we built a general equilibrium heterogeneous-agent model capable of exploring the relationship between fiscal policy variables and the endogenous crosssection distribution of income and wealth. Results show that, with the exception of the Belgian case, all consolidation strategies entail positive welfare gains. The transition costs affect all episodes and are determinant in sorting among the welfareenhancing strategies. Our results confirm the superiority of the adjustments based on unproductive expenditures over those based on tax increases or social transfer reductions. Finally, all strategies involve lower welfare inequality costs.fiscal consolidation dynamics, European Union, heterogeneous agent model, inequality, welfare.

Welfare-improving Government Behaviour and Inequality - Inspection Using a Heterogeneous-agent Model

Governments behavior is expected to be non-neutral in terms of impacts on both welfare and inequality. In spite of their multivariate form, a tentative assessment of such inequality impacts can be provided by using a general equilibrium model with heterogeneous-agents and where wealth and income distribution is determined endogenously. Using a model capable of exploring the relationship between fiscal policy variables and the endogenous cross-section distribution of income, wealth, consumption and leisure, this paper produces a welfare and inequality analysis of several equilibriums resulting from different combinations of debt levels and of government budget variables. Moreover, such assessment is based on the empirical reality of the EU countries.government budget composition and debt, heterogeneous agent model, idiosyncratic shock, inequality, welfare.

Monetary and Fiscal Policy Interactions in a Monetary Union with Country-size Asymmetry

This paper analyses optimal discretionary non-coordinated monetary and fiscal stabilization policies in a micro-founded New-Keynesian model of a two-country monetary union with country-size asymmetry, under two policy scenarios. A balanced-budget policy scenario and a policy scenario where the presence of government debt limits the macroeconomic stabilization effort and enlarges the sources of strategic policy interactions. Numerical results indicate that non-cooperation exacerbates the fiscal policy activism of a small country while moderating that of a large country. In the balanced-budget scenario, non-cooperation improves (reduces) welfare for a small (large) country while, in the high-debt scenario, it produces the opposite results. Cooperation dominates non-cooperation for the union as a whole.Monetary union; optimal fiscal and monetary policies; asymmetric countries.

Monetary Policy and the Political Support for a Labor Market Reform

Lagged benefits relative to costs can politically block an efficiency-enhancing labor market reform, lending support to the two-handed approach. An accommodating monetary policy, conducted alongside the reform, could help bringing the positive effects of the reform to the fore. In order to identify the mechanisms through which monetary policy may affect the political sustainability of a reform, we add stylized features of the labor market to a standard New-Keynesian model for monetary policy analysis. A labor market reform is modeled as a structural change inducing a permanent shift in the flexible-price unemployment and output levels. In addition to the permanent gains, the impact of the timing and magnitude of the reform-induced adjustments on the welfare of workers - employed and unemployed - is crucial to the political feasibility of the reform. Since the adjustments depend, on one hand, on the macroeconomic structure and, on the other hand, can be influenced by monetary policy, we simulate various degrees of output persistence across different policy rules. We find that, if inertias are present, monetary policy, even when conducted by an independent central bank, affects the political support for the reform. In general, the more expansionary (or the less contractionary) the policy is, the faster is the recovery to the new steady-state equilibrium and, thus, the stronger is the political support.Monetary policy rules; Labor market reforms; Unemployment benefit; Political economy; New-Keynesian models

A case for including fiscal policies in the Eurostat Labour Market Policy database

In the context of the growing coordination of labour market policies (LMP) implementation within the European Employment Strategy (EES), the Eurostat offers a harmonised database that intends to be a valuable instrument for international comparisons in the field. However, because its tight scope fails to include some important LMP measures, this database has been playing a small role on studies related with the EES as well on those broadly focusing on labour market and employment policies. This paper intends to address, by using meaningful LMP measures - tax credits in the UK, the prime pour l'emploi and general reductions of employers’ social contributions in France -, the importance of having a more comprehensive database, while maintaining its current structure. For that we discuss the aims and the level of targeting defined by the Eurostat and we include, under this framework, an assessment of these measures to illustrate the limits of the database. We conclude that these policies - apparently fitting the broad objectives of the EES - are explicitly targeted to the labour market, aim at improving its efficiency and undoubtedly benefit particular groups. Moreover, they have an important impact in terms of participants and expenditure involved.European Employment Strategy; Eurostat Database; Active Labour Market Policies; Tax Credits; Reductions of Social Security Contributions.

Authentic leadership, happiness at work and affective commitment: An empirical study in Cape Verde

Purpose This study aims to investigate the relationship between perceptions of authentic leadership (AL) and affective commitment (AC) both directly and indirectly through the mediating effect of happiness at work. Design/methodology/approach Empirical research has analyzed the data from a questionnaire administered to a sample of five hundred forty-three employees belonging to various public and private organizations in Cape Verde. Structural Equation Modeling was used to test the model. Findings It was found that the perceptions of AL explain employees’ happiness at work. Perceptions of AL also predict AC both directly and through the mediating effect of happiness at work. Practical implications The findings suggest that AL predicts happiness at work, which in turn, explain employees` emotional bond to the organization. These results provide evidence that the quality of working environment created by leaders plays an important role in the extent to which employees develop better emotional bond at work. So, the organizations, particularly in Cape Verde should focus on training leaders with authentic characteristics. Originality/value In addition to verifying the direct relationship between AL and AC, this study introduced the mediating effect of the happiness at work, providing a model that depicts the chain effect between AL, AC and happiness, integrating these concepts in a single study.info:eu-repo/semantics/publishedVersio