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An I.R.B. supreme council member and the I.R.A. 2nd Northern Division commandant, Charlie Daly was executed at Drumboe on 14 March 1923. Daly’s case shows how, through I.R.B. auspices, Free State G.H.Q. planned a joint northern offensive with republicans to avert civil war, while deploying the resources of the new state (and false promises) to engineer the support or at least neutrality of the Northern I.R.A. Eoin O’Duffy and Richard Mulcahy connived to remove Daly from his command because of his opposition to the Treaty, with events coming to a head at the ‘Beggar’s Bush inquiry’ on 2 March 1922. In due course, the Free State elite killed every senior republican brother party to the northern intrigue, including Joe McKelvey and Daly, the latter of whom was shot alongside Seán Larkin from Derry — a witness to GHQ ‘crookedness’ the previous March.
We identify a parsimonious set of factors from a large pool of candidates for explaining hedge fund returns, ranging from equity market, anomaly, and trend-following factors to macroeconomic factors. The resulting 9-factor model, including five anomaly factors, outperforms existing hedge fund models both in sample and out of sample, with a significant reduction in alphas while showing substantial cross sectional performance heterogeneity. Further analysis based on fund holdings confirms the model’s ability to capture returns from arbitrage trading. Overall, the anomaly factors help quantify hedge fund strategies and risk exposures and improve fund performance evaluation.
Vibration control in structures is essential to mitigate undesired dynamic responses, thereby enhancing stability, safety, and performance under varying loading conditions. Mechanical metamaterials have emerged as effective solutions, enabling tailored dynamic properties for vibration attenuation. This study introduces a convolutional autoencoder framework for the inverse design of local resonators embedded in mechanical metamaterials. The model learns from the dynamic behaviour of primary structures coupled with ideal absorbers to predict the geometric parameters of resonators that achieve desired vibration control performance. Unlike conventional approaches requiring full numerical models, the proposed method operates as a data-driven tool, where the target frequency to be mitigated is provided as input, and the model directly outputs the resonator geometry. A large dataset, generated through physics-informed simulations of ideal absorber dynamics, supports training while incorporating both spectral and geometric variability. Within the architecture, the encoder maps input receptance spectra to resonator geometries, while the decoder reconstructs the target receptance response, ensuring dynamic consistency. Once trained, the framework predicts resonator configurations that satisfy predefined frequency targets with high accuracy, enabling efficient design of passive controllers of the syntonized mass type. This study specifically demonstrates the application of the methodology to resonators embedded in wind turbine metastructures, a critical context for mitigating structural vibrations and improving operational efficiency. Results confirm strong agreement between predicted and target responses, underscoring the potential of deep learning techniques to support on-demand inverse design of mechanical metamaterials for smart vibration control in wind energy and related engineering applications.
This forum contribution explores the strengths and limits of Noam Yuran’s innovative call for a new political economy of sex and desire. It has three prongs. First, I discuss Yuran’s compelling focus on the curious durability of monogamy as an institution. Second, I examine his analysis of thinkers such as Mandeville and Weber. Finally, I turn to the question of love. I suggest that Yuran’s approach opens a pathway to a more loving and more realistic political economy of intimacy and familial love, one that I suggest is missing in much critical theory today, particularly in the rhetoric of family abolitionists.
The Great Depression era provides a natural experiment to study the effects of employee stock ownership on productivity due to the unexpected nature of the stock market crash in 1929 and the predetermined expiration of employee stock offerings staggered throughout the 1930s. I collect information on employee stock ownership from reports by the National Industrial Conference Board, annual company reports and other primary sources, and then merge them with the US Census of Manufactures to form the main establishment-level dataset. The results indicate that companies with active programs had significantly lower establishment-level output growth and fewer hours worked per employee than firms with inactive ESOPs post-crash. These negative effects, however, can be mitigated in smaller firms where employees feel their effort level has non-negligible effects. To my knowledge, this is the first study to empirically investigate these early ESOPs as well as address how continuing an employee stock ownership program during a financial crisis affects productivity.
The Parsi Sanskrit Yasna, attributed to Nēryōsangh, presupposes a sophisticated philological system that features historical, religious, and cultural elements. This philological system, developed in a multicultural environment, reflects both the Zoroastrian tradition and contemporary Indian society. Centuries later, Eugène Burnouf effectively utilised the same system to make significant advances in comparative Indo-Iranian studies. This article examines Burnouf’s philological approach and his rediscovery and revival of the original philological system of the Sanskrit Yasna, thanks to a multilingual and multicultural scope that allowed him to understand the text and draw important comparative patterns from it. The article emphasises the importance of multidisciplinary studies to fully explore the historical implications of the philological system, urging us to revisit its methodology in light of current knowledge and technology.
Joseph Raz’s service conception of legitimacy says citizens must obey the state when its directives allow them to comply with reason better than they would by deciding independently. Yet citizens’ capacity to decide for themselves is endogenous to state authority: the more they defer, the less competent they might become. Consequently, a state might secure its legitimacy through a self-fulfilling dynamic whereby citizens need state authority only because they have grown dependent upon it. This article diagnoses the problem and explains how the service conception can guard against it. Besides Raz's account, its argument applies to any theory of legitimacy with a “service” component.
This article explores the theme of the alchemical interpretations of medieval iconography through the life and the writings of Esprit Gobineau de Montluisant (c.1590–between 1652 and 1665). This French alchemist and poet indeed composed a dissertation on some of the ornaments on the main facade of Notre-Dame de Paris, in which he asserted that the sculptures that adorn it conceal alchemical allusions. This curious thesis, written by a practitioner who was in contact with leading political figures of his time, such as the diplomat Léon Bouthilier (1608–52) or the marshal Abraham Fabert d’Esternay (1599–1662), did not emerge from nothing. It is part of an exegetical literature that combines alchemical theories, scriptural allegories, and a sense of heritage for Gothic monuments that were often in disrepair at the time. Far from being anecdotal, Gobineau’s treatise continued to be studied and read over the following centuries by alchemists, writers, art critics and even archaeologists. This influence, albeit discreet, justifies rediscovering his life and his dissertation. It also reminds us of the need to consider works linked to Western esotericism in the study of European cultural and scientific history.
Mass dispersion in oscillatory flows is closely tied to various environmental and biological processes, differing markedly from dispersion in steady flows due to the periodic expansion and contraction of particle patches. In this study, we investigate the Taylor–Aris dispersion of active particles in laminar oscillatory flows between parallel plates. Two complementary approaches are employed: a two-time-variable expansion of the Smoluchowski equation is used to facilitate Aris’ method of moments for the pre-asymptotic dispersion, while the generalised Taylor dispersion theory is extended to capture phase-dependent periodic drift and dispersivity in the long-time asymptotic limit. Applying both frameworks, we find that spherical non-gyrotactic swimmers can exhibit greater or lesser diffusivity than passive solutes in purely oscillatory flows, depending on the oscillation frequency. This behaviour arises primarily from the disruption of cross-streamline migration governed by Jeffery orbits. When a steady component is superimposed, oscillation induces a non-monotonic dual effect on diffusivity. We further examine two well-studied shear-related accumulation mechanisms, arising from gyrotaxis and elongation. Although these accumulation effects are less pronounced than in steady flows due to flow unsteadiness, gyrotactic swimmers respond more strongly to the unsteady shear profile, significantly modifying their drift and dispersivity. This work offers new insights into the dispersion of active particles in oscillatory flows, and also provides a foundation for studying periodic active dispersion beyond the oscillatory flow, such as periodic variations in shape and swimming speed.
Morphological characters are central to phylogenetic inference, especially for fossil taxa for which genomic data are unavailable. While Bayesian methods have gained popularity in recent years, they typically assume characters evolve independently, despite known correlations among characters. Here, we assess the impact of character correlation and evolutionary rate heterogeneity on Bayesian phylogenetic inference using extensive simulations of binary characters evolving under independent and correlated models. We find that Bayesian inference assuming character independence accurately recovers tree topologies even when characters are strongly correlated or evolve under heterogeneous rates. However, branch lengths or clock rates tend to be underestimated, particularly under extreme rate heterogeneity. These biases are partially corrected using models that integrate over character-state heterogeneity. Our results demonstrate that Bayesian methods are robust to violations of character independence in topological inference, supporting their continued use in morphological phylogenetics.
How do citizens evaluate the judiciary in the wake of politically salient rulings? I argue that judicial checks on the government shape citizens’ attitudes about judicial institutions at large, but these effects are driven by instrumental considerations, namely partisanship. In particular, my account suggests that judicial checks – as specific instances of interbranch conflict – provide citizens with instrumental information that shapes their beliefs about the broader judiciary. Thus, I hypothesize that court rulings limiting the government’s power will undermine support for the judiciary among individuals aligned with the incumbent, but increase support among opposition sympathizers. I test these expectations by exploiting the timing of two judicial decisions in Argentina (enacted by a lower court and the Supreme Court) that invalidated a highly salient judicial reform promoted by the government in 2013. Using data from a survey fielded before and after the court rulings, I show that the decisions significantly decreased government supporters’ trust in the judiciary, while opposition supporters increased their trust only following the Supreme Court ruling. Moreover, suggestive evidence provides support for the mechanism proposed by my account – that judicial checks expose citizens to information that is primarily instrumental. This article contributes to our knowledge of the determinants of public support for judicial institutions involved in interbranch conflicts.
After World War II, many countries, including Nigeria, embraced Keynesian “welfarist” policies to stimulate economic growth and enhance the well-being of their citizens. However, in the late 1960s and early 1970s, a global economic crisis prompted a shift towards neoliberalism, leading to the commodification of social institutions and the implementation of policies such as privatization, trade liberalization and deregulation in Nigeria. This shift had a significant impact on Nigeria’s socio-legal economy, particularly in terms of property rights in company ownership. The article raises concerns about the structural injustice and growing inequality resulting from these neoliberal policies. It advocates for a legal framework that addresses these issues and proposes reconceptualizing private property rights in company ownership in Nigeria. This proposed framework aims to counter the dominance and power of property-owning elites and mitigate the structural injustice induced by neoliberal policies in Nigeria.
During the early twentieth century, Catalonia experienced a period of great cultural and musical development through the Noucentisme movement, which aimed to elevate its national culture to a symbol of high art. The xeremies (shawms) of the cobla ensemble, which played the sardana genre, were integrated into symphonic and chamber repertoire. This required the technical improvement of the tible (treble) and tenora (tenor) xeremies, but also encouraged the invention of new instruments in the shawm family. The barítona (baritone shawm) was premiered in 1930 by the Banda Municipal de Barcelona and represents a milestone in Catalan music in the tumultuous period before the Spanish Civil War.
Synthetic datasets, artificially generated to mimic real-world data while maintaining anonymization, have emerged as a promising technology in the financial sector, attracting support from regulators and market participants as a solution to data privacy and scarcity challenges limiting machine learning (ML) deployment. This article argues that synthetic data’s effects on financial markets depend critically on how these technologies are embedded within existing ML infrastructural ‘stacks’ rather than on their intrinsic properties. We identify three key tensions that will determine whether adoption proves beneficial or harmful: (1) data circulability versus opacity, particularly the ‘double opacity’ problem arising from stacked ML systems, (2) model-induced scattering versus model-induced herding in market participant behavior, and (3) flattening versus deepening of data platform power. These tensions directly correspond to core regulatory priorities around model risk management, systemic risk, and competition policy. Using financial audit as a case study, we demonstrate how these tensions interact in practice and propose governance frameworks, including a synthetic data labeling regime to preserve contextual information when datasets cross organizational boundaries.
This pilot cross-sectional study, conducted in two public hospitals in Malawi, assessed gestational diabetes mellitus (GDM) in pregnant women attending antenatal clinics and compared their dietary quality and food group consumption before and during pregnancy. The study targeted women aged 18 to 49 years within 24 to 28 weeks of gestation. GDM was diagnosed according to the International Association of Diabetes and Pregnancy Study Group criteria and assessed dietary quality before and during pregnancy using a 30-day qualitative food frequency questionnaire. We compared changes in dietary quality and specific food group mean scores using paired t-tests at p < 0.05. Of the 508 women enrolled, 22.7% were diagnosed with GDM. The overall diet quality significantly decreased during pregnancy compared to before; a similar trend was observed in women diagnosed with GDM compared to those without GDM (p < 0.0001). Among women with GDM, the mean score of the following food groups significantly (p < 0.05) decreased during pregnancy: cruciferous vegetables, deep orange vegetables and tubers, citrus fruits, deep orange fruits, other fruits, nuts and seeds, poultry, fish, low fat dairy, whole grains, and liquid oils and significantly (p < 0.05) increased in the following food groups; red meat, processed meat, sugar-sweetened beverages, sweets, sugary snacks and ice cream. In conclusion, GDM is prevalent in Malawian women enrolled in this study and is coupled with inadequate dietary quality, especially during pregnancy. Since dietary quality is pivotal to GDM management, more in-depth longitudinal dietary studies are needed to inform nutritional interventions to prevent and better manage GDM.
Child maltreatment increases the risk of emotional and behavioral problems, yet many children demonstrate resilience, functioning better than expected given their level of maltreatment exposure. Although resilience is a dynamic process shaped by children’s social support, including friendships, how different patterns of resilience and friendship support unfold together across development remains unclear. To better understand this process, we examined how patterns of emotional resilience, behavioral resilience, and friendship support co-develop across childhood and adolescence. We used group-based multi-trajectory modeling with data from the Avon Longitudinal Study of Parents and Children (N = 6, 518, 51% female) to identify distinct patterns of emotional and behavioral resilience (doing better-than-expected given their level of maltreatment exposure) and friendship support, across five timepoints from ages 6 to 17 years. We identified five trajectory groups. Nearly half the sample maintained high emotional and behavioral resilience and friendship support across development. While resilience trajectories varied, friendship support was generally high across groups. Most children followed trajectories of high resilience and perceived friendship support. Even among children with lower emotional and/or behavioral resilience trajectories, friendship support remained high, an encouraging finding. Future research should examine how children’s other relationships (e.g., with parents and siblings) unfold alongside resilience.