In the philosophical works of the Athenian elite, wage-labour was scorned for being incompatible with personal freedom and the practice of virtue. This line of thinking, however, economic historians recently exposed as idiosyncratic, since wage-labour in Athens has been shown to be extensive and potentially a source of high prestige. Considering the importance of specialization (tekhnê) in labour, this article focusses on the social status of a category that is usually overlooked—namely, those wage-labourers who would be deemed unspecialized. Through a close examination of popular literature, it is argued that the attitudes of elite and non-elite Athenians partially converged, since the latter looked with disdain not upon wage-labour in general but upon unspecialized wage-labour in particular.

Egg masses of Aplysia depilans consist of long and intertwined strings containing numerous capsules with eggs. Light microscopy stains and transmission electron microscopy revealed four layers in the gelatinous sheath that encircled and aggregated the chain of egg capsules. The outermost layer has a fluffy structure. The second, third, and fourth layers consisted of reticulated matrices with different densities. The second and third layers were divided into 5‒6 strata each. The fourth and innermost layer of the gelatinous sheath has a higher density and no visible stratification. This layer glues the tightly packed capsules to one another and to the outer layers of the gelatinous sheath. The thin wall of the capsules is formed by a homogeneous and highly electron-dense material. Inside the capsules, the eggs or embryos were bathed in an electron-lucent aqueous medium. Bacteria and diatoms were the most abundant microorganisms on the surface of egg strings. Bacteria penetrate the gelatinous sheath and appear to be involved in the degradation of the upper strata, but were never found inside the egg capsules. Metagenomic analysis revealed a large taxonomic diversity of bacteria associated with egg masses of A. depilans. Although 15 phyla could be recognized, the families Flavobacteriaceae (Bacteroidota), Lentisphaeraceae (Lentisphaerota), and Rhodobacteraceae (Pseudomonadota) represented 67.9% ± 11.6% of the relative abundance in the microbiome of the egg string samples. The presence of genera capable of decomposing polysaccharides, such as Tenacibaculum and Cellulophaga, supports the idea that bacteria are responsible for the degradation of the gelatinous layers of the egg strings.

As a field, the history of education contains scant analyses of power, deprivation, or privilege from a white, patriarchal, or masculine viewpoint, a concerning limitation that obscures how power works to reinscribe, sustain, and proliferate itself. This claim reflects that to some degree, gender is racialized and race is gendered. To support this contention, I discuss the small body of history of education scholarship that has interrogated white, masculine, and/or patriarchal power, highlighting in particular the work of feminist scholars of Color.1 I also underscore what we as a field might gain in analyzing masculine, patriarchal, and/or white power with the same fervor many pay to racially, ethnically, and sexually marginalized communities, pointing out some seminal works and figures that stand to be further enhanced by gendered or racial analysis. I end with questions that could inform research directions toward these ends.

To date, published studies have proven that the reactions at the iron/bentonite interface are complex and only partly understood. In the present study, mixtures of bentonite powder and iron powder were prepared, which allowed for varying individual parameters. The results confirmed some controversial previously reported conclusions and revealed new findings. More specifically, Na-exchanged samples showed a reduced extent of corrosion compared to Ca/Mg-exchanged ones, and the addition of reactive silica increased the extent of corrosion, which has not been reported to date. The negative temperature effect (less corrosion at higher temperatures), which was reported previously, could only be confirmed for Ca/Mg-bentonites. One Na-bentonite showed the opposite effect, but this sample also contained reactive silica in contrast to the others. The present study proves for the first time that the type of exchangeable cation can affect the type of corrosion product, which could be an explanation for why the 7 Å corrosion product was not reported in all corrosion tests (sometimes only magnetite was reported). In addition, experiments that ran for 36 months showed that the corrosion progress of six different bentonites was different. Three bentonite/iron mixtures did not show progress in corrosion after 12 months, whereas the other three showed ongoing corrosion. Using the former three bentonite/iron mixtures would significantly increase high-level radioactive waste canister lifetime, but future work should be devoted to the identification of the reason for this differing long-term performance, differing thermal behaviour and differing corrosion products resulting from different types of exchangeable cation.

“Diplomacy at Work: The South African Worker, U.S. Multinationals, and Transnational Racial Solidarity” examines the history of corporate reform and anti-apartheid activism through the lens of South African labor and global worker movements. It argues that Black workers in apartheid South Africa repurposed U.S. corporate codes—especially the Sullivan Principles—as instruments of resistance. The labor movement transformed reformist rhetoric into tools for collective action and transnational worker solidarity. Drawing on oral histories, trade union archives, corporate reports, and government records in both the United States and South Africa, the dissertation reveals how workers used weak corporate reforms to pressure multinational companies, connect with U.S. labor allies, and challenge the violence of apartheid from the shop-floor. In doing so, it bridges business, labor, and diplomatic history to show that workers helped shape global debates over corporate ethics and U.S. foreign policy in the late Cold War era. Diplomacy at Work thus recasts South African labor as a central force in the transnational struggle against apartheid.

Suppose $G\curvearrowright X$ is a Polish group action, H is a Polish group, and $G\times X\mathop {\overset {\psi }\longrightarrow } H$ is a cocycle that is continuous in the second variable. If $\psi $ is either Baire measurable or is $\lambda \times \mu $-measurable with respect to a Haar measure $\lambda $ on G and a fully supported $\sigma $-finite Borel measure $\mu $ on X, then $\psi $ is jointly continuous.

This paper anatomises and illustrates drawings and prints in the British Museum extracted from an early seventeenth-century album. The drawings, which were inserted by the museum into a new album, suggest that the original album originated in the workshop of a London goldsmith with German or central European origins who worked for the royal court and had a connection to Thomas Cecil, Earl of Exeter. Particular attention is paid to forty-four ornament prints, mainly German, long separated from the drawings. Nearly all are signal additions to the canon of engraved ornament documented in London at this early date. The ensemble thus reassembled is a rare window into design sources, style and processes early in the Stuart period.

High expressed emotion (EE) in families is known to increase risk of relapse for people with schizophrenia. This Cochrane Review by Chien et al suggests that family-based interventions such as psychoeducation may result in a reduction in caregiver burden, a shift from high to low EE, and perhaps also reduce patient relapse rates. However, there was a high degree of heterogeneity in the combined study sample and a significant risk of bias across studies. The authors’ decision to only include studies reporting both a family member and a patient outcome means relevant evidence in this area may not have been incorporated.

Igbo-Ora, a town in southwestern Nigeria, is renowned for exceptionally high dizygotic twin birth rates, recording approximately 45 per 1000 live births. This article explores the factors behind this unique phenomenon by critiquing the community’s perceptions and narrative of the factors responsible for the high twinning rate and comparing these perceptions with biomedical hypotheses. Drawing on 6 months of ethnographic fieldwork — participant observation, 81 semistructured interviews, and FGDs — this study documents local narratives that highlight hereditary ‘twin threads’ —; specific foods, notably Ilasa (okra-leaf soup) and cassava meals; environmental qualities of ‘air’ and ‘water’; and divine sanction as factors responsible for the incidence of twin birth in Igbo-Ora. These local narratives are analyzed against certain biomedical perspectives on maternal age and parity effects, putative genetic variants influencing gonadotrophins, and dietary phytoestrogens. The study found that the community resist single-cause explanations for the incidence of twin birth and instead articulates a complementarity of genetic, ecological, dietary, and spiritual factors. This holistic framing contrasts with and complements prevailing genetic and nutritional theories surrounding the incidence of twin birth. The article argues that future genetic and epidemiological investigations in high-twinning populations must be culturally attuned to ensure accurate phenotype definition, ethical engagement, and translational relevance.

Over recent decades, we find about $80\%$ of widening residual wage inequality to be within jobs (industry-occupation pairs). To explore the underlying drivers, we incorporate into a sorting equilibrium framework with two extensive margin channels (across-job sorting and within-job selection of a performance-pay position) and an intensive margin channel (quality of skill match), in addition to residual job productivity. We show that equilibrium sorting is positively assortative both within and across jobs. By calibrating the model to the United States in 1990 and 2000, we find the improved match quality and rising performance-pay incidence amplify each other, jointly accounting for about $90\%$ of the widening within-job wage inequality. Match quality and performance pay are particularly important in jobs with rising average wages and expansionary employment. Once performance pay and match quality channels are incorporated, job sorting becomes less important and residual job productivity becomes inconsequential throughout.

Examining the systemic exploitation of mentally ill individuals, this study focuses on the practices of the British colonial administration in Kabba Province, Northern Nigeria (1900–1947). This research investigates how colonial authorities employed biopolitical strategies to categorise, control, and exploit this vulnerable population for labour, prioritising colonial economic and administrative interests. The study utilises a qualitative methodology, primarily analysing archival documents from the National Archives of Nigeria (NAK), Kaduna, and Arewa House Archives (AHA), to uncover the forced labour system’s practices and rationalisations. Crucially, it incorporates oral sources from direct descendants of ethno-medical practitioners, former colonial staff, traditional chiefs, and learned community members. This oral history component provides vital intergenerational knowledge, contextualising archival findings and offering perspectives often absent from official records, ensuring a nuanced understanding of pre-colonial mental health practices and colonial-era lived experiences. Secondary literature on colonial biopower, mental health history, and regional history provides a comparative framework. Findings indicate the colonial administration systematically repurposed traditional care and established new mechanisms to identify, isolate, and compel mentally ill individuals into various forms of forced labour for infrastructure and economic extraction. In conclusion, this research significantly contributes to scholarship on vulnerable populations during colonialism, illuminating the intricate link between mental illness, labour, and power in colonial Nigeria, and informing contemporary debates on mental health, human rights, and historical justice.

Lower limb-assisted exoskeletons can provide payloads and support, but the hip joints of current lower limb-assisted exoskeletons have problems such as single mechanisms, few degrees of freedom, and limitations in the types of gaits that can be acted upon. To address these problems, a novel double-cam hip joint assist mechanism is proposed for walking, running, and carrying gait situations. The double cam and two rectangular compression springs with different stiffness are used to satisfy the differences in exoskeleton assistance requirements in multiple gaits. First, biomechanical simulation of walking, running, and carrying movements is carried out with OpenSim to obtain the hip joint angle and torque data, and then the structural design of the assist mechanism is carried out. Hip joint angle planning and contour solving are carried out for the contour lines of the cams, so that the cam contour lines are assist according to different hip joint angles, and the stiffness of compression springs is determined by D’Alembert’s principle, and the assist torques are analyzed. Meanwhile, a human–machine coupling model was established for theoretical analysis. Finally, the muscle power change curves were exported using OpenSim, and the assistance was verified by comparison.

Hegel indicates throughout his writings that the claims most pivotal to his system of philosophical science receive their proof only in logic itself. And yet, Hegel has surprisingly little to say in either the Encyclopaedia Logic or the Science of Logic itself about what he means by ‘proof’ or what sort of proof procedure it is that he thinks is suited to meet such a demand. In this paper, I develop an account of the proof procedure at work in the Logic by considering Hegel’s treatment of the traditional proofs of God’s existence (specifically, the ontological and the cosmological arguments) that he offers in the logical writings and in his Religionsphilosophie. I develop this account through the speculative reconstruction of the traditional arguments of natural theology that Hegel offers in his 1827 Lectures on the Philosophy of Religion and the 1829 Lectures on the Proofs of the Existence of God where, I argue, these arguments are divested of their syllogistic form and reformulated on the model of conceptual mediation. In the end, I explain how this account of the Logic’s proof procedure sheds light on two lingering interpretive issues in Hegel’s metaphysics: its relationship to the ontological argument and its solution to ‘the problem of beginning’.