Unethical behaviour is a concern in the workplace, because of the possible consequences for all stakeholders. This issue is particularly salient in the financial services sector, a highly regulated environment, where breaches of the regulations can result in large fines and reputational damage to the organisation concerned. Unethical behaviour can also have severe effects on customers, such as when inappropriate advice leads to customers losing all or a large part of their savings. Empirical studies have tended to focus mostly on organisational antecedents of unethical intentions and behaviour, with individual factors not being given that much attention. Research on the antecedents of unethical intentions and behaviour has produced inconsistent findings, suggesting that context might play a role. Consequently, my research has attempted to study the individual antecedents of unethical intentions and behaviour in the financial services industry, a specific context where it is salient. Malta presents a particularly pertinent context for this study, as its profile on Hofstede's cultural dimensions scale has been empirically linked to a higher potential for engaging in unethical behaviour.

La prévision du comportement mécanique macroscopique de matériaux hétérogènes à partir des propriétés de leurs constituants est possible pour diverses classes de comportement (élastique, viscoélastique, etc) et ce, grâce à la théorie de l'homogénéisation. Néanmoins l'extension de cette théorie pour des matériaux possédant un comportement viscoélastique non linéaire (ou élasto-viscoplastique) reste une question ouverte à laquelle nous nous attaquons dans ce travail afin de prédire le comportement macroscopique des combustibles oxydes mixtes uranium-plutonium (MOX) utilisés dans les réacteurs nucléaires à eau sous pression (REP) français. Dans cette optique des solutions analytiques et purement nunériques ont été obtenues et le modèle retenu est utilisé pour simuler le comportement des combustibles / The prediction of the macroscopic mechanical behavior of heterogeneous materials from the properties of their constituents is possible for various classes of behavior (elastic, viscoelastic, etc.) thanks to the theory of homogenization. Nevertheless, the extension of this theory for materials with a non-linear (or elasto-viscoplastic) viscoelastic behavior remains an open question that we are tackling in this work in order to predict the macroscopic behavior of uranium-plutonium (MOX) mixed oxide fuels used in french pressurized water reactors (PWRs). From this perspective analytical and purely numerical solutions have been obtained and the model adopted is used to simulate the behavior of fuels.