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An analytical theory is presented for linear, local, short-wavelength instabilities in swirling flows, in which axial shear, differential rotation, radial thermal stratification, viscosity and thermal diffusivity are all taken into account. A geometrical optics approach is applied to the Navier–Stokes equations, coupled with the energy equation, leading to a set of amplitude transport equations. From these, a dispersion relation is derived, capturing two distinct types of instability: a stationary centrifugal instability and an oscillatory, visco-diffusive McIntyre instability. Instability regions corresponding to different axial or azimuthal wavenumbers are found to possess envelopes in the plane of physical parameters, which are explicitly determined using the discriminants of polynomials. As these envelopes are shown to bound the union of instability regions associated with particular wavenumbers, it is concluded that the envelopes correspond to curves of critical values of physical parameters, thereby providing compact, closed-form criteria for the onset of instability. The derived analytical criteria are validated for swirling flows modelled by a cylindrical, differentially rotating annulus with axial flow induced by either a sliding inner cylinder, an axial pressure gradient or a radial temperature gradient combined with vertical gravity. These criteria unify and extend, to viscous and thermodiffusive differentially heated swirling flows, the Rayleigh criterion for centrifugally driven instabilities, the Ludwieg–Eckhoff–Leibovich–Stewartson criterion for isothermal swirling flows and the Goldreich–Schubert–Fricke criterion for non-isothermal azimuthal flows. Additionally, they predict oscillatory modes in swirling, differentially heated, visco-diffusive flows, thereby generalising the McIntyre instability criterion to these systems.
Designing meaningful reparations for Indigenous communities requires grappling with the enduring effects of historical and contemporary injustices. Despite the existence of international legal frameworks such as the United Nations Declaration on the Rights of Indigenous Peoples (UNDRIP) and International Labour Organization Convention 169, Indigenous peoples around the world continue to experience systemic land dispossession, exclusion from decision making, and environmental harm tied to extractive and infrastructure projects. These harms are often compounded by the lack of formal legal recognition of Indigenous land rights and the failure to uphold principles like Free, Prior, and Informed Consent (FPIC). Addressing these realities demands reparative frameworks that go beyond symbolic recognition, offering structural responses grounded in accountability, restitution, and the restoration of Indigenous autonomy over land and resources.
In this essay, we will use the Haiti Cholera case study to explore how the victims and the socioeconomic turns are increasingly pivotal in the field of reparations as part of transitional justice. On December 1, 2016, UN Secretary General Ban Ki-moon apologized for the cholera epidemic in Haiti, an illness which arrived with Nepalese peacekeepers deployed after the 2010 earthquake. After years of silence and denial from the UN, the UN finally established a “New Approach to Cholera in Haiti,” promising material assistance and support to the victims through a “victim-centered approach.” The essay builds on our previous matrix used to clarify the debate made of two separate dimensions: the focus of reparations—collective versus individual—and the means of reparations—symbolic versus material.1 Based on fieldwork conducted in March 2017 in the communities most affected by the cholera outbreak, we demonstrate how the tensions between reparations offered by the UN (with a preference for collective symbolic reparations) and the reparations demanded by the victims (individual material reparations) can help explain why reparations were not fully (at best) successful in providing justice for the Haiti cholera victims and hopefully inform practice in this area for other UN trust funds and victims’ rights mechanisms. The first section discusses the specifics of the cholera crisis in Haiti and the subsequent Haiti Cholera Claims, including the sudden change of position by the UN in 2016 and the nature of reparations included in the New Approach to Cholera in Haiti. The second section looks at the reparations debate and the preferences expressed by the affected communities in Haiti. The third section puts the Haiti Cholera Claims in perspective, discussing the Kosovo Lead Poisoning case and the Mothers of Srebrenica case, both third party cases involving a UN peacekeeping presence like the Haiti Cholera Claims. Finally, the last section looks at the ramifications of the Haiti Cholera Claims and how reparations debates need to take into account wider structural factors impacting the development of third world countries.
The Journal of Management and Organization (JMO) is celebrating its 30th birthday, which is a significant event given how the journal has shaped and influenced global management research and practice. As part of the commemorative activities this perspective article aims to highlight how the journal has contributed to the development of several sub-management themes. Each theme is analysed in terms of articles published in the journal in terms of establishing existing knowledge then explaining future research ideas. This helps to solidify the journal’s reputation and standing in the field in order to foster more management research that contributes to both theory and practice. Novel social and business approaches to future organizational and manager’s needs are addressed. This will inspire more meaningful management engagement in order to further support the evolution of management research.
This article looks at military history through a social lens, focusing on the identity and experiences of the Irish Catholics recruited for service in the British army during the American Revolution, a conflict which occurred before Catholics were legally permitted to serve, but during which significant numbers were recruited nonetheless. Using Irish Catholic recruitment and subsequent service in the 46th Regiment of Foot as a case study, this article will discuss the integration of this group into a regular regiment on the British establishment, arguing that despite contemporary anxieties to the contrary, the incorporation of Irish Catholics into the British army happened smoothly and without negative impact on regimental cohesion and discipline. They became well-integrated, and while their loyalty to the British state can never be definitively proven, they certainly became effective participants in its army and empire. This provides a compelling viewpoint from which to discuss the integration of ‘others’ into Britishness and the imperial apparatus during this period.
To the extent they consider the matter, tort theorists sometimes assume that the subjects of authority in tort law are the citizens of the state whose tort law applies. This assumption underlies democratic and social contractarian accounts of how to justify the authority of tort law. But as the doctrine of private international law—particularly choice of law—reveals, the subject of tort law is not the citizen, but the generic person; and authority in tort law is not grounded in the state-citizen relationship. Instead, choice of law rules reveal a more complex picture of how tort structures authority. Here, I offer a sketch of an approach that can justify tort law’s authority over persons, not citizens. And I discuss how this analysis may require us to rethink not just the subjects of tort law but also the subject of tort law: the nature of its primary rights and duties.
Formerly colonized peoples and their governments have long sought repatriation of cultural heritage taken under the auspices of colonialism. Increasingly, states and museums are acknowledging ethical obligations to undertake such returns.1 This essay argues that, unless combined with other measures, repatriation represents incomplete reparation of the harms caused by the loss of such heritage. But repatriation alone does serve some reparative function. It can also operate as a necessary initial step enabling further reparative measures. The U.S. Native American Graves Protection and Repatriation Act (NAGPRA) illustrates these dynamics.2
Neutron stars (NSs) emitting continuous gravitational waves may be regarded as gravitational pulsars, in the sense that it could be possible to track the evolution of their rotational period with long-baseline observations of next-generation gravitational wave (GW) interferometers. Assuming that the pulsar’s electromagnetic signal is tracked and allows us to monitor the pulsar’s spin evolution, we provide a physical interpretation of the possible observed correlation between this timing solution and its gravitational counterpart, if the system is also detected in GWs. In particular, we show that next-generation detectors, such as the Einstein Telescope, could have the sensitivity to discern different models for the coupling between the superfluid and normal components of the NS and constrain the origin of timing noise (whether due to magnetospheric or internal processes). Observational confirmation of one of the proposed scenarios would therefore provide valuable information on the physics of GW emission from pulsars.
In this paper we theorise climate fiction in the context of Dirrayawadha: Rise Up, by Anita Heiss (2024). Dirrayawadha: Rise Up is a literary novel that narratises historical truths in a dialogic encounter. Through an exploration of love, resilience and resistance, the novel recounts early moments of invasion while simultaneously revealing the links between colonial violence and environmental crisis. We examine four excerpts from the novel to illustrate how the narratisation of historical truths and usage of literary devices and language works. We also show how the translanguaging in the novel, where some sections shift between English and Wiradyuri, enable the text to transcend some of the limitations of English. The novel reveals how the genesis of environmental crisis in so-called Australia begins in the first moments of invasion. Heiss (2022) argues the need for settlers to read more First Nations writing as a form of truth-listening (Kwaymullina, 2020).
Public art is fundamental in the shaping of a city’s identity: in the city of Bologna’s case, this identity is inextricably tied to the Resistance. The presence or absence of women in monumental commemorations, then, becomes a way to either include or exclude them from this shared identity. By centring its analysis on the monuments dedicated to the Resistance’s fallen erected since 1945, this article will utilise the case study of Irma Bandiera to analyse women’s presence within the commemorative topography of the city. Through the study of two monuments, the Monumento Ossario ai Caduti Partigiani and the Memoriale alle 128 partigiane cadute, this article will also highlight the role of the local community in the creation of a shared and representative identity.
Paleontology is facing an ethical crisis related to its long history of extractive practices, including a practice now referred to as parachute science. In this article, I provide diagnostic criteria for identifying parachute science and illustrate them using the high-profile example of a Brazilian dinosaur fossil, Irritator challengeri, acquired by a German museum under dubious conditions. I use this case study to identify three types of harm resulting from parachute science, showing how they can be understood as a case of distributive epistemic injustice. I conclude by using this framework to point toward more ethical paleontological practices.
The signals and consequences of, and currently overall eco-socio-cultural inadequate responses to, the pressing climate and biodiversity crises of the Anthropocene foster a landscape of repression, hopelessness and anxiety among many, not least young people. As young people today seem to primarily encounter dystopian future narratives, this article tells a story about how playing an open-ended, solarpunk, character-driven cli-fi tabletop roleplaying game together with young people might nurture non-dystopic engagements. Designed as both a research and educational playspace, the game invites participants to become co-researchers and co-narrators engaged in imagining life-friendly futures, attempting to push the boundaries of environmental and sustainability education research. In conversation with the theoretical inspirations of the game — post-Anthropocene pedagogy, climate literacy research and SF multispecies storytelling — the article discusses insights from the first prototype playtests. When the game flows, it produces engagements with speculative futures and understandings of hope’s relational and complex character. When it halts, it reveals challenges around participation, social context and setting, pointing to directions for further research and game alterations.
This scoping review examines the literature on psychiatric in-patient ward rounds, a crucial and ubiquitous but understudied component of psychiatric care. We sought to examine the methods and perspectives used in research on ward rounds and identify recommendations for practice.
Results
The review identified 26 studies from diverse in-patient settings but predominantly UK-based, which made 21 recommendations for practice. The commonest methods used were staff surveys and patient interviews. Patient experience, structure, efficiency and power dynamics were the commonest research foci.
Clinical implications
Key recommendations for improving psychiatric ward rounds include reducing participant numbers, increasing patient involvement, structured documentation and regular scheduling. Despite weak empirical evidence supporting these suggestions, they are seen as feasible starting points for quality improvement. The review calls for future research to triangulate patient and staff reports with direct observation to better assess ward round effectiveness and outcomes.
International criminal law constitutes the culmination of the ‘anti-impunity agenda’ within international law, policy, and practice. This agenda, often advanced under the rallying cry of ‘never again’ – a pledge to never let atrocities like those of the Second World War happen again to anyone – is driven by the conviction that criminal sanctions are essential for fulfilling this promise and conveying collective condemnation of such horrors. This results in what we term the ‘penal accountability paradigm’ in relation to atrocities: positioning punishment at the forefront of the prevention of, and justice and accountability for, atrocities. This paper examines some of the damaging implications of this paradigm within and beyond international criminal law, particularly its distorting effects on responses to ongoing atrocities in Palestine. We suggest that, in the context of these ongoing atrocities, the framing of punishment as justice harms the ‘never again’ promise in several important ways: (i) it gives states the (undue) benefit of the doubt; (ii) it decontextualizes, individualizes, and exceptionalizes atrocities; (iii) it monopolizes discourses of accountability and condemnation, while sanitizing the suppression of dissenting voices; and (iv) it lends support to retaliatory impulses, distorting the discourse around the legitimate or lawful use of force in response to atrocities. We conclude by outlining the need to turn to more diverse and materially informed words, tools, and paradigms for naming, preventing, and standing in solidarity against abuses, in Palestine and elsewhere, that go beyond penal responses and directly engage with broader political and ethical conceptions of justice.
Toxoplasmosis during pregnancy can cause congenital malformations and fetal death. This study aimed to estimate the Toxoplasma gondii seroprevalence among pregnant women participating in the 2021 French national perinatal survey and identify associated factors. All women giving birth in France during the study period were invited to participate. Data collected included demographic information, nationality, socio-economic status, education level, and Toxoplasma gondii serological status. Women were classified as seropositive if IgG antibodies were present or if seroconversion occurred during pregnancy. Univariate and multivariate Poisson regression analyses with robust error variance were used to estimate prevalence ratios and identify factors associated with seropositivity. Among 12,612 women, the overall seroprevalence was 25.9%, and 0.22% seroconverted during pregnancy. Seroprevalence increased by 5% with every 5-year age increment and was significantly higher in the French overseas territories of Mayotte (75.0%), La Réunion (35.8%), and French Guiana (33.3%). Seroprevalence was also higher among women with lower educational levels (47.4% for primary education) and those of Sub-Saharan African nationality (52.0%). Geographic and socio-demographic variations may reflect dietary and environmental diversity. Despite declining seroprevalence in France, continued public health efforts, particularly among high-risk populations, remain critical to minimize the impact of congenital toxoplasmosis.
We present a study of second harmonic generation (SHG) and third harmonic generation (THG) in lithium triborate (LBO) crystals using a high-energy, 10-J-class, 10 Hz ytterbium-doped yttrium aluminum garnet laser system. We achieved high conversion efficiencies of 75% for SHG and 56% for THG for Gaussian-like temporal pulse shapes and top-hat-like beam profiles. The angular and temperature dependence of the LBO crystals was measured and validated through numerical simulations. The SHG process exhibited an angular acceptance bandwidth of 1.33 mrad and a temperature acceptance bandwidth of 2.61 K, while the THG process showed 1.19 mrad and 1.35 K, respectively. In addition, long-term stability measurements revealed root mean square energy stabilities of 1.3% for SHG and 1.24% for THG. These results showcase the reliability of LBO crystals for high-energy, high-average-power harmonic generation. The developed system offers automated switching between harmonics provided at the system output. The system can be easily adapted to neodymium-doped yttrium aluminum garnet based pump lasers as well.
In this paper we show that the rank of the normal function function of the genus $g$ Ceresa cycle over the moduli space of curves has the maximal rank possible, $3g-3$ , provided that $g\ge 3$. In genus 3 we show that the Green–Griffiths invariant of this normal function is a Teichmüller modular form of weight $(4,0,-1)$ and use this to show that the rank of the Ceresa normal function is exactly 1 along the hyperelliptic locus. We also introduce new techniques and tools for studying the behaviour of normal functions along and transverse to boundary divisors. These include the introduction of residual normal functions and the use of global monodromy arguments to compute them.
This article explores multispecies climate fiction as a mode of inquiry that speculates-with other-than-humans. To explore cli-fi’s potential in research, I position speculative fiction in the field of research-creation, a praxis that combines artistic exploration with scholarly inquiry. Adopting a research-creation approach, I wrote the multispecies cli-fi story Canopy of the Hidden Alley. The story emerged from the Multispecies City Lab project, a participatory research project that invited participants to imagine multispecies life in urban areas affected by climate change. I engaged creatively with the research findings of the Multispecies City Lab project, using participants’ imaginaries as a proposition to write the cli-fi story. In this article, the story Canopy of the Hidden Alley is presented alongside methodological reflections on speculative fiction and research-creation, as well as theoretical conceptualizations of what it means to speculate-with other-than-humans in climate fiction. This article discusses the potentiality of speculative fiction as a form of research-creation, demonstrating how creative writing enabled deeper engagement with issues of identity and positionality, social and relational hierarchies and the interplay of multiple temporalities, which guided toward new understandings of multispecies entanglements in the context of climate change and speculative climate futures.
Depression, anxiety and post-traumatic stress disorder (PTSD) are prevalent among healthcare workers (HCWs), including those from sub-Saharan Africa (SSA). However, there are limited summary data on the burden and factors associated with these disorders in this region. We conducted this systematic review (registration no. CRD42022349136) to fill this gap.
Aims
The aim of this review was to systematically summarise the available evidence on the prevalence and factors associated with depression, anxiety and PTSD, or their symptoms, among HCWs from SSA.
Method
We searched African Index Medicus, African Journals Online, CINAHL, PsycINFO and PubMed for articles published, from database inception to 15 February 2024. The keywords used in the search were ‘depression/anxiety/PTSD’, ‘healthcare workers’, ‘SSA’ and their variations.
Results
Sixty-nine studies met our inclusion criteria, most of which (n = 55, 79.7%) focused on the burden of these disorders during the COVID-19 pandemic. Across studies, wide-ranging prevalence estimates of depressive (2.1–75.7%), anxiety (4.8–96.5%) and PTSD symptoms (11.7–78.3%) were reported. These disorders appear to have been heightened during the COVID-19 pandemic. Several sociodemographic, health-related, COVID-19-related and work-related factors were reported to either increase or lower the risk of these disorders among HCWs from SSA.
Conclusions
The burden of depression, anxiety and PTSD among HCWs from SSA is high and appears to have been worsened by the COVID-19 pandemic. The correlates of these disorders among HCWs from this region are multifactorial. A multi-component intervention could contribute to addressing the burden of mental disorders among HCWs from this region.