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Fracture behavior of Ti-6Al-4V in the extreme thermo-mechanical environment of fan blade-out
Full text linkContratti pubblici e intelligenza artificiale. Atti del Convegno (Catania, 29 novembre 2024)
No full textIl volume rappresenta la raccolta degli Atti del Convegno svoltosi a Catania, il 29 novembre 2024 sul tema dei contratti pubblici e intelligenza artificiale.This volume contains the Proceedings of the Conference held in Catania on November 29, 2024, on the topic of public contracts and artificial intelligence
God, Guilt, and Giving: Public Good Contribution among Catholics and Protestants
Full text linkThis paper examines how religious ethic influences contributions to public goods. We develop a theoretical model distinguishing individualistic motivations—where people seek to meet individual moral standards—from collectivistic motivations—where behavior is guided by others’ expectations. We argue that the Protestant ethic emphasizes individual responsibility, while the Catholic ethic places greater weight on social expectations. The model predicts that the Protestant contribution share increases with income, whereas the Catholic contribution share is non-monotonic. Moreover, Catholics’ overall contribution is relatively higher at lower-middle incomes and lower at higher-middle incomes, while there is no denominational difference in the decision whether to contribute at all. The model also implies that only Catholics’ contributions are sensitive to the religious composition of their environment. We test these predictions using data from the German Socio-Economic Panel, exploiting variation within individuals. Consistent with the theoretical model, we find (i) no denominational differences at the extensive margin; (ii) at the intensive margin, donations increase with income among Protestants and remain flat among Catholics. These results hold when using the denomination of the parents, suggesting intergenerational transmission of religious ethics. Our findings highlight the role of religious moral structures in shaping cooperative behavior and public-good provision
Mean–trend risk portfolio selection with non-dominated sorting asset preselection
Full text linkIn the vast landscape of financial markets, identifying potential investment assets such as stocks can be overwhelming and time-consuming. For portfolio managers, focusing on a specific selection of stocks through an effective filtering process can streamline this task. This paper introduces an efficient stock preselection method using multidimensional non-dominated sorting of selected return statistics. Unlike previous research, our approach leverages statistics derived from approximated return series through nonparametric regression and principal component analysis (PCA). We further explore the impact of this preselection on mean-variance and the newly proposed mean-trend risk large-scale portfolio selection strategies. By examining the efficient frontier of portfolios from various return and risk perspectives, our empirical analysis on US stock market data provides both ex-post and ex-ante results for 40 portfolio strategies. The findings suggest that for most risk-averse investors, mean-trend risk strategies with preselection significantly outperform both the same strategies without preselection and traditional mean-variance strategies
Moral Law
No full textAmong the major themes discussed by early scholastic theologians, moral law is of crucial significance. This topic is discussed in some form in virtually every theological work written between the mid twelfth and mid
thirteenth centuries and thus engaged the intellectual attention of a wide range of masters, from Peter Lombard to the authors of the Summa Halensis. This contribution aims to examine the diverse positions regarding moral law that emerged in early scholastic thought, from two main perspectives. On the one hand, moral law will be considered insofar as it is founded in Scripture and linked to a biblical conception of human nature. On the other hand, the chapter will demonstrate how the emergence of new anthropological models increasingly linked the moral law to the rational nature of the human being. After recounting the early discussions on moral law from the beginning of the twelfth century, this contribution will examine how early scholastic theologians described the relationship between the moral law and the Bible. In this regard, the chapter will highlight the central role of Praepositinus of Cremona, who reshaped the concept of the moral law and laid the foundation for subsequent developments. These arose from the exchanges between Parisian theologians, who considered moral law in the light of a new conception of the human being
and the rational nature. With respect to this debate, the work of John de La Rochelle and the Summa Halensis mark the point of maturation of a fully fledged theological system of moral law
Platform-mediated local power in tourism
No full textThis research note develops a conceptual framework for analysing how digital platforms reconfigure place-based power in tourism. Rather than treating the “local turn” as a bounded community or an ontological essence, the note approaches locality as a relational and contested claim, historically produced through political economy, mobilities and uneven social hierarchies, which is increasingly validated through platform infrastructures. Drawing on critical tourism political economy and platform studies, the note introduces platform-mediated local power to describe how platforms shape who can credibly claim local legitimacy, how such claims circulate across publics, and how they are converted into economic participation under ranking, review and recommendation regimes. Through the interrelated dimensions of visibility, credibility and convertibility, the framework shows how algorithmic mediation reorganises long-standing asymmetries in land, capital, labour, and representation by layering informational control onto material relations. The note concludes by arguing that decolonising tourism knowledge must be pursued alongside efforts to contest platform infrastructures through regulation, transparency and alternative forms of data governance
Free Will
No full textThis chapter aims to outline the discussions that animated Latin theology between the twelfth and the first half of the thirteenth century regarding the nature of free will. It thereby seeks to show how the need emerged to identify and discuss the value of the definitions of free will that the theological and philosophical traditions provided to medieval authors. The authors of this period were seeking the most complete of these definitions and a model of how its components should be understood in order to be able adequately to explain the dynamics of moral action underlying the biblical account of the original sin of Adam and Eve. Early scholastic theologians elaborate on this problem by addressing some crucial points. On the one hand, on the basis of the late eleventh- and early twelfth-century discussion, they question whether free will consists in reason or will – or both – and how reason and will relate to each other. On the other hand, the reception of new doctrinal sources, mainly John of Damascus’ account of moral action, meant it became essential to understand whether
free will was a faculty or a habit. This contribution will present the development of this theological discussion, first recalling its roots in previous debates and then focusing on the emerging of different perspectives between
the 1150s and the 1250
L’influenza del pregrafismo sulla qualità della grafia
No full textIl presente lavoro analizza il legame tra le abilità motorie e lo sviluppo della scrittura manuale, esplorando il ruolo cruciale che il pregrafismo e l'educazione alla motricità rivestono nella prevenzione e nell’accomodamento della disgrafia. Considerando la disgrafia un disturbo del neurosviluppo, distinto dalle difficoltà di apprendimento, si considerano le cause neurobiologiche e l'impatto emotivo sui bambini. La scrittura è primariamente un atto motorio complesso, la cui automatizzazione è potenziatore di risorse cognitive essenziali per l'apprendimento. A sostegno di questa tesi, è stato condotto uno studio di caso in una scuola primaria. Attraverso un approccio olistico, l'intervento didattico mirato ha dimostrato la sua efficacia nel migliorare le competenze grafo-motorie degli studenti, con un miglioramento morfologico della qualità della scrittura manuale. I risultati confermano che un'educazione al pregrafismo ben strutturata rappresenta un valido strumento di supporto e sostegno per la scrittura