Aircraft maintenance is a multifaceted process that requires highly skilled, qualified and experienced personnel. Effective maintenance processes optimise aircraft operational lifespan, minimise lifecycle costs and improve reliability by reducing the probability of unexpected maintenance events. The initial diagnostic phase relies on detailed visual inspections conducted by certified technicians. Following inspections, data assessment leads to the development of a comprehensive maintenance plan, along with the sourcing of necessary resources and spare parts. As the maintenance, repair and overhaul (MRO) sector transitions into the era of Industry 4.0, there is a growing emphasis on integrating data analytics and cyber-physical systems into maintenance practices. A key objective in this evolution is the adoption of robotic systems for inspection tasks. This shift requires the reconfiguration of formal inspection procedures to ensure compatibility with robotic operations. Moreover, it is critical to address the specific requirements of robotics and to incorporate smart hangar technologies that take advantage of real-time data to improve both efficiency and effectiveness in maintenance operations. This study provides a comprehensive review of the MRO landscape and maintenance checks, with a particular focus on robotic aircraft inspection systems, navigation and smart hangar infrastructure. The discussion concludes with an examination of defect detection methods using machine vision along with relevant metrics to compare with human performance.

Calls to defund the police gained prominence with the Black Lives Matter (BLM) movement and take various forms. Depending on what will be defunded, the idea has attracted support from different parts of the political spectrum. The politicized nature of the debate often cuts short reflection on how best to assess proposals to defund the police. This article takes up that task. It begins by developing a typology of defund measures: abolitionist cuts, abolitionist reallocation, disaggregative cuts, and disaggregative reallocation. It then outlines a framework to evaluate policing and defund measures, drawing on criteria from the ethics of defensive force. Since policing relies on force, it faces a high justificatory bar and must satisfy the principles of just aim, proportionality, and necessity. The state should not fund unjustified forms of policing that violate those principles. Different violations, though, demand different policy responses.

Se analiza la labor de los ingenieros militares como agentes locales para la resolución de los conflictos globales que afectaron al Caribe español durante el siglo XVIII. Además, se examina su integración en los circuitos de traslación del conocimiento conformados en torno a las principales ciudades caribeñas pertenecientes al Imperio español, y su participación en la transferencia de una cultura materializada en ideas, instituciones e instrumentos. El análisis de estos traslados supone una temática novedosa que permite entender la adaptación de un conocimiento técnico promovido por los ingenieros en su arquitectura, el cual sería determinante en la constitución de una determinada imagen del poder imperial al otro lado del Atlántico.

Since its inception, the Common European Framework of Reference (CEFR) has become increasingly influential in the field of second language (L2) education. In an effort to define the grammatical structures that English learners acquire at each CEFR level, the English Grammar Profile (EGP) provides a list of over 1,200 structure-level mappings derived from largely manual analysis of learner corpora. Though highly valuable for the design of didactic materials and examinations, the EGP lacks comprehensive quantitative methods to verify the acquisition levels it proposes for the grammatical structures. This paper presents an approach for revisiting the EGP structure-level mappings with empirical statistics. The approach utilizes automatic grammatical construction extraction, a large learner corpus, and statistical testing to empirically determine the level of each structure. The structure-level mappings resulting from our approach show limited agreement with that of the original EGP proposals, suggesting that frequency data alone does not provide enough evidence for the acquisition of the grammatical structures at the levels presented by the EGP.

This paper argues that security cooperation among neighbouring countries in the Global South is often hampered by domestic instability and fragmented territorial control resulting from state failures. Geographical proximity, characterised by porous borders and high levels of cross-border human mobility, directly impacts the security of neighbouring states. This creates a dilemma for security cooperation when one state lacks the capacity for effective governance. Empirically, the paper examines the evolution of Thailand’s security relations with Myanmar over recent decades, highlighting the profound impact of Myanmar’s political instability on Thailand. It analyses how the 2021 military coup and the subsequent collapse of Myanmar’s domestic political order have shaped Thailand’s securitisation of non-traditional security threats. By focusing on issues such as irregular migration, public health issues, drug trafficking, and transboundary pollution, the paper explores how these challenges have been securitised in Thailand and how they have complicated security cooperation between the two countries. The paper contends that the limited territorial control and legitimacy of Myanmar’s military government have significantly hindered Thailand’s ability to address its security concerns effectively. It further calls for security cooperation in the Global South beyond the conventional state-to-state level.

This article traces the unique set of factors that allowed mid-nineteenth-century coeducation at a medical college traditionally reserved for men. I argue that in the period 1850-1856, a window of opportunity offered a small group of women the chance to pursue medical education at the traditionally all-male regular Cleveland Medical College, at a time when medical training was inaccessible to women. A unique confluence of factors inspired this development, including a temporary fluidity of standards in medical training and practice, rising prospects for women’s access to higher education, the rapidly changing Cleveland urban environment and its progressive women’s network, and the College’s internal dynamics. The female graduates of the Cleveland Medical College joined a pioneer generation of women physicians in the mid-nineteenth-century US who chipped away at long-standing barriers limiting the role of women in medicine.

Globally, gender equality is the next frontier for social transformation, and women’s economic empowerment is promoted as the pathway to achieve this goal, particularly in countries of the Global South. Women’s economic empowerment is broadly defined as women’s capacity to contribute to, and benefit from, economic activities on terms that recognise the value of their contributions. Advocates for women’s economic empowerment state that it has the potential to be a safeguard against poverty and precarity by enhancing women’s wellbeing. Using a critical-feminist lens, we explore the benefits and risks of the global trend towards women’s economic empowerment. After providing an overview of the evolution of the concept of empowerment, we review the benefits of women’s economic empowerment: economic growth, improved rates of tertiary education and market participation for women, and growth of women’s autonomy. We then examine the risks of the global focus on women’s economic empowerment, which we distil into three key areas: (a) women seen as a country’s ‘natural resource’, used as instruments for economic prosperity and reproduction without considering their wellbeing; (b) a focus on women’s market participation without adequately factoring in current labour market realities; and (c) pushing the women’s economic empowerment agenda forward without fully considering the scope of unpaid reproductive work undertaken by women. We conclude with an analysis of how UN Women (2024) is shifting the agenda by providing a holistic framework for thinking about women’s economic empowerment. We suggest that there is room for cautious optimism if this framework is widely adopted.

This study examines the role of the timing of obligatory disambiguating information – obligatory cues – and presence/absence of optional morphological markers in resolving temporary syntactic ambiguity in Spanish object relative clauses. Native adult comprehension (Study 1) reveals similar accuracy for clauses with relatively early obligatory cues, regardless of the presence/absence of additional markers, and those with late obligatory cues with additional markers, but reduced accuracy for those with late obligatory cues without additional markers. Given the phonetic resemblance of the late-disambiguated variant with its corresponding subject relative, we conduct two follow-up perceptual identification tasks with the whole relative clause, including the head (Study 2), and relative clause fragments (Study 3). The identification tasks show that, when instructed to attend to the form of the structures, participants perceive acoustic differences but retain a bias towards subject-relative interpretations. Our results suggest that additional markers aid comprehension of non-canonical structures when obligatory cues occur relatively late within the structure and highlight the dominance of predictive processing over perceptual information in such cases of late disambiguation.

There has been limited research into the effectiveness of penetrating captive bolt (PCB) for stunning horses (Equus caballus) at slaughter. This study observed 100 horses at a commercial abattoir in Mexico, stunned using pneumatic PCB. Animals were assessed at the time of stunning and immediately after for signs of effective/ineffective stunning and shot positioning, with macroscopic gross brain pathology conducted to determine brain trauma. Twenty-five percent (25/100) received more than one shot and 28% (28/100) displayed behavioural signs of ineffective stunning. Of these 28 animals, all had deviations of more than 10 mm from the suggested shot position outlined by the Humane Slaughter Association with rostral-caudal deviation associated with an absence of damage to the thalamus, midbrain, and pons. Forty-four percent (44/100) of animals displayed no damage to critical brain structures (thalamus, midbrain, pons and medulla), with this associated with ineffective stunning. Overall, 16% of shots missed the brain (16/100), with a higher proportion of poll shots (30%) missing the brain compared to frontal shots (12%). There is the potential, when animals are shot into the poll, for paralysis from damage to the spinal cord and caudal brainstem structures. Appropriate position, angle and performance of PCB is therefore vital to achieving an effective stun, by targeting critical brain structures responsible for maintaining consciousness and ensuring proper PCB maintenance. Animals should be routinely checked between stunning and exsanguination, with minimal time between these stages, to minimise recovery of consciousness and alleviate suffering for horses at slaughter.

One of the central insights of critical and constructivist International Relations (IR) scholarship is that identity-seeking matters in world politics. Ontological Security Studies (OSS) has expanded on this insight, emphasising that actors may prioritise maintaining a stable sense of self over physical security and other concerns. Yet the question of radical identity change, particularly its affective dimension, remains underexplored. To address this gap, we draw on Lacanian psychoanalysis and argue that ontological security is sustained by fantasies aimed at filling a primordial lack that can never be resolved. This lack generates anxiety, which actors attempt to soothe by attaching their desires to empirical signifiers – objects-cause of desire – that promise wholeness. Our argument centres on the idea that the rearticulation of desire occurs through the affective mechanism of catharsis, manifesting as either metaphor or metonymy. We illustrate our argument through the case of Serbia’s cathartic (re)articulation of Kosovo as its object-cause of desire. In particular, we juxtapose earlier successful articulations of Kosovo as a metaphoric substitution for other desires with more recent, less effective attempts to rearticulate the north of Kosovo and the submerged cultural heritage in Gazivode Lake as metonymic substitutions for the rest of the territory.

A new species of flatfish (Pleuronectiformes) is described from early Oligocene deposits of the Keasey Formation near Mist, Oregon, USA. The rare preservation of an articulated fish in the Mist crinoid lagerstätte is likely because the specimen represents a relatively pelagic immature individual that had not yet settled into the typical benthic lifestyle of adult flatfishes. The new species is included in a phylogenetic analysis; although it is lacking many characters, it is recovered as an early diverging lineage, sister to the extant members of the superfamily Pleuronectoidea. This phylogenetic position fits well with the age of this fossil and conforms with the origin of flatfishes occurring in the early Cenozoic, followed by diversification and radiation throughout the Eocene, Oligocene and Miocene epochs.