Airbreathing waveriders often use the fuselage forebody as the pre-compression surface of the inlet, which tends to encounter complex internal-external flow coupling issues. First, the osculating cone method is employed, and a wide-speed-range airbreathing waverider is designed by partitioning it into the waverider forebody, elongated body and waverider aft body, achieving full waverider characteristics. Next, the configuration is optimised to address the internal-external flow coupling issue. The calculations show that the optimised configuration improves the lift-to-drag ratio by more than 20% and the total pressure recovery coefficient by more than 30% in both operating conditions compared to the baseline configuration. Finally, data mining techniques are applied to analyse the data from the optimisation process. It reveals the interdependent relationship between the vehicle’s internal and external flow performance, with the cone shock wave angle and wing extension line length having the most significant impact on aerodynamic performance, thereby generating design knowledge. The content of this paper covers configuration design, optimisation and data mining. The entire process is highly generalisable and can serve as a reference for other aircraft configuration design optimisation tasks. The resulting design knowledge can also provide valuable insights for researchers in future airbreathing waverider designs.

This article explores the dispute between the philosopher Immanuel Kant and the physician Johann Daniel Metzger over the moral autonomy of individuals with mental illness. Situating the debate within the broader context of the evolving philosophical and medical professions in eighteenth-century Germany, the article examines how a professional conflict emerged over who – the physician or the philosopher – should serve as the legal authority in cases where moral responsibility was in question. The analysis shows that this was not merely a theoretical issue for Kant, but a practical one, brought to the fore by the infanticide trial of Margarethe Kaveczynska, in which Kant’s friend, Theodor Gottlieb Hippel, presided as judge. The article argues that while Kant’s vision for the practical application of his anthropology influenced his conception of moral autonomy, he ultimately lost ground to the rising authority of the medical profession.

Pronatalism in the United States is allied with the movement to ban abortion. Evidence shows abortion bans harm people and do not increase birth rates.

This essay discusses the contours of what I call a new instrumental turn in Nigerian historical scholarship. It argues that the historical discipline in Nigeria is experiencing a new instrumental turn, which finds expression in several new features of academic history writing, teaching, and programming. Some aspects of this trend hearken back to the original instrumental history of the pioneers of Nigerian and African nationalist history; others represent something new, being responses to novel twenty-first-century anxieties and imperatives of nation-building, development, and the place of humanities knowledge in those aspirations. Unlike old conceptions of instrumentality, this new turn signals a more explicit agenda of problem-solving through historical research. It also entails a rather formulaic embrace of proposals for solutions to problems identified in or through historical research.

Kant’s description of the moral politician in ‘Perpetual Peace’ is the most detailed statement of his template for legislative reform. I argue that the moral politician responds to criticisms of Kant’s earlier ‘Theory and Practice’ essay by Friedrich Gentz and August Wilhelm Rehberg. Gentz and Rehberg objected to: Kant’s treatment of the relationship between theory and practice in politics, his conception of popular sovereignty, and his account of political transformation. By showing that Kant used the moral politician to rebut Gentz and Rehberg, I highlight an underappreciated dimension of ‘Perpetual Peace’ while situating Kant’s political stance in its historical context.

The rapid advancement of satellite-based monitoring technologies and niche modelling present unprecedented opportunities to enhance conservation efforts, especially over large areas, yet their practical application in guiding conservation strategies remains limited. This study examines how land-use changes affect ant diversity in the Acre River basin, south-western Brazilian Amazon. Using niche modelling with climatic, environmental and land-use data, we examined species distributions for three ant guilds – forest specialists, generalists and open-habitat specialists – across 1985, 2019 and 2050. The results show that forest specialists are concentrated in the eastern regions but are projected to decline, while open-habitat specialists – dominant in the south-west – are expected to increase in distribution. Generalists displayed broader, stable distributions. These patterns highlight the critical role of forest conservation in preserving the diversity of forest-specialist species and the threat posed by Amazon forest conversion, and they point to the need for strategic landscape planning to mitigate deforestation impacts.

This article argues against the cliché (posited most famously by Alexis de Tocqueville and Carl Schmitt), that there were inherent correspondences between religious and political concepts. Such connections were historically contingent, and had to be forged by polemicists and apologists who eclectically drew upon a variety of sources. This is evident from an examination of differing Presbyterian reactions to the French Revolution. John Brown in Scotland combined an aristocratic Presbyterian ecclesiology with a Burkean view of authority to argue for an anti-democratic conception of “representative government.” By contrast, the Scottish-American Alexander McLeod synthesized radical Presbyterian political theology with Painite ideas of “representative democracy.” Thus representation emerged as the key concept in both authors, yet its compatibility with democracy was an open question. The examples of Brown and McLeod also show that religion, as much as “secular” politics, had to grapple with and re-imagine “democracy.”