Perceptualism is a prominent theory analyzing emotions as perceptual experiences of value. A long-standing challenge to perceptualism says that emotions cannot be perceptual because they are subject to normative assessments in terms of reasons and rationality, while perceptual experiences are not. I defend perceptualism from this charge. My argument begins by distinguishing two forms of normative assessment: fundamental and non-fundamental. Perceptualism is compatible with the latter (i.e., non-fundamental reasons and rationality); even sensory experiences are so assessable. I next argue that emotions are only non-fundamentally assessable. Following this argument, I outline a perceptualist-friendly theory of emotions as non-fundamentally normatively assessable.

So much has been written about Frederick W. Lanchester over the years, it is hard to imagine finding something new to discuss about his efforts in aerodynamics. Many of the previous Lanchester Memorial Lectures discussed topics such as wing aerodynamics, aircraft concepts and design, unsteady rotor aerodynamics, aerodynamics research and a wide variety of other related aerodynamic topics. However, there has never been a lecture about Lanchester’s book Aerodynamics as a tool for aerodynamics education in the early 20th century. The lecture will discuss his book relative to other aerodynamics books before and after 1907, and uncover how Lanchester’s book had a very distinct, and important, contribution to make for aerodynamic education.

The present article is concerned with the Lyapunov stability of stationary solutions to the Allen–Cahn equation with a strong irreversibility constraint, which was first intensively studied in [2] and can be reduced to an evolutionary variational inequality of obstacle type. As a feature of the obstacle problem, the set of stationary solutions always includes accumulation points, and hence, it is rather delicate to determine the stability of such non-isolated equilibria. Furthermore, the strongly irreversible Allen–Cahn equation can also be regarded as a (generalized) gradient flow; however, standard techniques for gradient flows such as linearization and Łojasiewicz–Simon gradient inequalities are not available for determining the stability of stationary solutions to the strongly irreversible Allen–Cahn equation due to the non-smooth nature of the obstacle problem.

In this paper, pulse splitting approach is proposed to simultaneously reduce the sidelobe level (SLL) of fundamental signal and maximum sideband levels (SBLs) of harmonic signals for time-modulated linear array (TMLA). This is achieved by controlling only the periodic switching time sequence of each element of the TMLA. In pulse splitting, the on–off switching sequence of each radiating element is characterized by multiple rectangular sub-pulses within the modulation period which increase the degrees of freedom in order to better synthesize the desired fundamental pattern with simultaneous suppression of harmonic or sideband radiation. A genetic algorithm is employed to optimize the switch-on and switch-off instants of each sub-pulse for each element for 16-element uniform amplitude, phase, and space linear antenna array. The simulation results reveal that the proposed method can achieve the desired patterns with very low SLL and SBLs compared with previous published results.

Objections to the orthodox doctrine of an eternal hell often rely on arguments that it cannot be a person’s own fault that she ends up in hell. The article summarizes and addresses three significant arguments which aim to show that it could not be any individual’s fault that they end up in hell. I respond to these objections by showing that those who affirm a classical picture of sin have Moorean reasons to reject these objections. That classical perspective holds that all (serious) sin involves choosing eternal destiny apart from God and that no sin could possibly be caused by God. Consequently, it is necessary for ending up in hell that someone commit a serious sin, and it is sufficient for ending up damned that one persists forever in sin. Since the objections conflict with Moorean commitments central to the classical perspective, those who hold to such a classical perspective on sin would have good reason to reject all these arguments, which involve assumptions that would entail that such a perspective is false.

Given a group G acting faithfully on a set S, we characterize precisely when the twisted Brin–Thompson group SVG is finitely presented. The answer is that SVG is finitely presented if and only if we have the following: G is finitely presented, the action of G on S has finitely many orbits of two-element subsets of S, and the stabilizer in G of any element of S is finitely generated. Since twisted Brin–Thompson groups are simple, a consequence is that any subgroup of a group admitting an action as above satisfies the Boone–Higman conjecture. In the course of proving this, we also establish a sufficient condition for a group acting cocompactly on a simply connected complex to be finitely presented, even if certain edge stabilizers are not finitely generated, which may be of independent interest.

Nilpotency concepts for skew braces are among the main tools with which we are nowadays classifying certain special solutions of the Yang–Baxter equation, a consistency equation that plays a relevant role in quantum statistical mechanics and in many areas of mathematics. In this context, two relevant questions have been raised in F. Cedó, A. Smoktunowicz and L. Vendramin (Skew left braces of nilpotent type. Proc. Lond. Math. Soc. (3) 118 (2019), 1367–1392) (see questions 2.34 and 2.35) concerning right- and central nilpotency. The aim of this short note is to give a negative answer to both questions: thus, we show that a finite strong-nil brace B need not be right-nilpotent. On a positive note, we show that there is one (and only one, by our examples) special case of the previous questions that actually holds. In fact, we show that if B is a skew brace of nilpotent type and $b\ \ast \ b=0$ for all $b\in B$, then B is centrally nilpotent.

Extant literature shows that small conversations with strangers can help improve individuals’ wellbeing while reducing feelings of loneliness. Nevertheless, previous studies on talking to strangers tend to focus on young participants in controlled experimental settings, leaving a gap in understanding older adults’ experiences and their likelihood of adopting talking to strangers as part of their daily healthy ageing practices. Considering the problem of worsened social isolation and loneliness among older people during the Covid-19 pandemic, it is even more important to include them in the promotion of social inclusion through micro-conversations with strangers. To understand older adults’ attitudes and experiences of talking to strangers, this study interviewed 19 older people based on their trial of talking to strangers over a three-month period. Findings reveal that their willingness and confidence varied by age and gender, with retired individuals being more active in engaging with strangers. Time constraints and lack of self-efficacy were identified as barriers, particularly among those still working or with caregiving responsibilities. Rather than personal gains, the act of kindness towards others was emphasised as the key motive. These insights are valuable for policy makers and organisations supporting older people’s wellbeing, highlighting the potential for older individuals to serve as conversation initiators, promoting mutual kindness and wellbeing in communities.

The family Streblidae is a significant grouping of dipteran insects within the superfamily Hippoboscoidea, which parasitizes the body surface of bats. With the global spread of bat-related pathogens in recent years, Streblidae has gained increasing attention due to its potential for pathogen transmission. A sample of Brachytarsina amboinensis was sequenced on the B. amboinensis were obtained, compared with available Streblidae mitogenomes, and the phylogeny of Hippoboscoidea was reconstructed. The results indicate that the mitochondrial genome of B. amboinensis exhibits a relatively high degree of conservation, with an identical gene count, arrangement, and orientation as the ancestral insect's genome. Base composition analysis revealed a strong bias towards A and T in the base composition. Selection pressure analysis indicated strong purifying selection acting on cox1. Pairwise genetic distance analysis showed that cox1 evolved at a relatively slow rate. Regarding phylogenetic relationships, the constructed phylogenetic trees using Bayesian inference and Maximum Likelihood methods supported the monophyly of the Hippoboscoidea, Glossinidae, Hippoboscidae, and Nycteribiidae clades, with high nodal support values. Our research confirmed the paraphyly of the families Streblidae. In the familial relations between Nycteribiidae and Streblidae, New World Streblidae share a closer kinship with Nycteribiidae. This contrasts with prior findings which indicated that Old World Streblidae share a closer kinship with Nycteribiidae. This study not only enhances the molecular database for bat flies but also provides a valuable reference for the identification and phylogenetic analysis of Streblidae.

This study addresses a significant knowledge gap in the literature by examining the relationship between religious involvement and subjective wellbeing (SWB) among older adults in Taiwan, a cultural context that has been underrepresented in existing research, with a focus on gender and age differences. Using data collected in Taichung City in 2017 (N = 645), this study measured religious involvement through religious affiliation, religiosity and frequency of religious participation, and assessed SWB via life satisfaction and happiness. Findings revealed no significant association between religious involvement and life satisfaction. However, religious participation was positively correlated with happiness. Gender differences were observed: Buddhism and Taoism were positively associated with life satisfaction among males, whereas religiosity and religious participation were significantly related to life satisfaction and happiness among females. Age disparities were also found, with religiosity significantly relating to both life satisfaction and happiness in the old-old group (70–89 years) but not in the young-old group (60–69 years). These findings highlight the nuanced associations between religious involvement and SWB, emphasising the importance of considering gender and age variations in future research. Future studies should further explore the cultural contexts that shape these relationships and examine other potential mediating factors to provide a more comprehensive understanding of how religious involvement influences wellbeing across different demographic groups.

Historiographic studies of transnational environmental law (TEL) are increasingly relevant as scholars and practitioners search for ways in which to deliver more quickly and efficiently effective regulation that is responsive to global environmental issues. This article uses new and original archival research to better locate the Convention for the Preservation of Wild Animals, Birds and Fish in Africa (1900 London Convention) in its legal-scientific historical context. Most of the scholarship on this topic draws on historian John M. MacKenzie's groundbreaking analysis of what he called ‘the hunting cult’ and its role in the imperial advance into India, Africa, and elsewhere. When viewed through the dual lens of legal history and the history of science, the late 19th and early 20th centuries represented a period of transition during which a new science-based perspective advanced by evolutionary biologists was embraced by science-minded policymakers, and expressed in domestic law and foreign policy aimed at the preservation of endangered species and the protection of biodiversity. The 1900 London Convention is an early example of a modern TEL instrument informed by science and by values that today most recognize as being critically important and universal. The new history in this article also resonates as an example of how polarizing political narratives can delay law reform and the importance of maintaining focus on collaborative problem solving and science-based regulation of complex transnational environmental issues.

A prominent challenge to analytic theology charges that its methodology leads to idolatry. This article explores a response to this challenge that draws upon the Eastern Orthodox apophatic tradition. Apophatic approaches, which emphasize how little we can truthfully say or know about God, are not exclusive to Orthodox Christianity. But these views take a unique form within the tradition insofar as they accord a prominent role to the distinction between God’s essence and God’s energies. The divine essence is what it is to be God, what God is as such, what God is at God’s core. In contrast, the divine energies are properties, modes, or activities of God not included in the divine essence but intimately related to it. Proponents of the distinction have claimed that it can help theorists to navigate the Christian tradition’s cataphatic and apophatic commitments, which don’t always sit comfortably together. This article argues that there are ways of crafting the essence/energy distinction that can also help to address the ‘Idolatry Argument’ against analytic theology.

This paper seeks to open an inquiry into the origins of astropolitics, an intellectual and popular imagination whose defining characteristic is the attempt to project geopolitical concepts and categories into outer space. I locate the roots of this vision not merely in Anglo-American maritime strategy but in the rather earthlier German tradition of geopolitics, more specifically in the work of the geographer Friedrich Ratzel and the political theorist Carl Schmitt. Surprisingly, however, my reverse chronology discovers that although the two men’s ideas reverberate through contemporary astropolitical discourses, they were both in fact, in different ways and for different reasons, hesitant about space colonisation. The paper makes sense of this finding and unpacks its implications for contemporary International Relations debates on off-earth politics.

In this article, I develop a neglected aspect of the value of hope in Kant’s philosophy. I do so by homing in on Section III of the 1793 essay “On the Common Saying.” In my interpretation, Kant argues that if one recognizes obligations to help future generations while also encountering people who violate these obligations, one is more likely to isolate oneself from society—what Kant calls the hatred of humanity or misanthropy. Thus, the article argues that hope is valuable for combating misanthropy, especially in the pursuit of intergenerational moral goals.

From speech to privacy, broad public interests are increasingly governed online by policy decisions taken by private companies. We examine when and how firms make such decisions. In contrast to the shadow of hierarchy and functionalist explanations of private authority, we build an analytical framework based on business power and the economics literature concerned with two-sided markets. We argue that companies operating as digital platforms may use private actor governance to consolidate their influence. More precisely, public-interest regulation on one side of the market (e.g., protecting the privacy of end-users) may increase the dependence of firms on the other side of the market (e.g., increasing the price paid for information by advertisers). We probe our argument by looking at the privacy policy implemented by Apple in 2021. Our findings demonstrate the growing role played by digital companies in global regulatory debates and call attention to how market structures can simultaneously incentivize public-interest regulation and become a source of business power.

As pressures build, this study can serve as a guidepost for scholars and policymakers to learn from global trends in social inclusion and social inclusion policy. Our systematic review of global trends in social inclusion and social inclusion policy points to the general expansion and retrenchment of social inclusion policy amid increasing social exclusion associated with trends such as globalisation and neoliberalism. In the absence of recent, detailed case descriptions of social inclusion policy at the national level, we call for a renewed scholarly focus on case studies of social inclusion policy. We also discuss the likelihood that persistent climate change, migration, ageing populations, and technological innovations are poised to dramatically influence global social inclusion and suggest that future research should seek to understand the relationship between these developments and social inclusion. As we look to the future and the growing needs of excluded populations, we aim to use this study to learn from and build on these global trends to promote the inclusion of excluded groups around the world.