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We analyze a countable support product of a free Suslin tree which turns it into a highly rigid Kurepa tree with no Aronszajn subtree. In the process, we introduce a new rigidity property for trees, which says roughly speaking that any non-trivial strictly increasing function from a section of the tree into itself maps into a cofinal branch.
The article explores how the COVID-19 pandemic revived discussions on the importance of local pharmaceutical production for promoting health security and resilient health systems. It examines the World Health Organization's hub and spoke mRNA vaccine production model (mRNA hub), a global initiative that aims to establish sustainable, local mRNA manufacturing capabilities in low- and middle-income countries in response to the inequities in access to COVID-19 vaccines and the trade disruptions during the pandemic. Using the mRNA hub as case study, the paper discusses how the tectonic shift towards local production implicates supply and license agreements, and thus IPRs. The paper maps the intellectual property challenges that might impact the mRNA hub's sustainability and provides recommendations on how to enhance the initiative's chances of success and foster a more equitable pharmaceutical sector in the future.
Studies have demonstrated that the quality and transparency of reporting clinical practice guidelines (CPG) in health care are low. This meta-research aimed to evaluate the adherence of nutrition CPG for critically ill adults to the Reporting Items for practice Guidelines in HealTh care (RIGHT) checklist and its association with the methodological quality assessed by the Appraisal of Guidelines for Research and Evaluation II (AGREE II), along with other potential publication-related factors. A systematic search for CPG until December 2024 was conducted. RIGHT and AGREE II were applied. Eleven CPG were identified, none demonstrated adherence greater than 60 % to the RIGHT checklist and the mean RIGHT score was 33·5 ± 15·5 %. There was a strong correlation between the RIGHT score and AGREE II (r 0·886). A development CPG team including methodologist and/or statistician was associated with a higher RIGHT score (48·9 ± 4·5 v. 27·2 ± 11·0), and it was higher in CPG recommended or recommended with modifications by AGREE II in comparison to those not recommended (50·1 ± 4·6 v. 37·7 ± 8·1 v. 17·0 ± 6·8), and in those with acceptable and moderate compared with those with low methodological quality (50·1 ± 4·6 v. 32·2 ± 14·5 v. 19·3 ± 6·2). It was also related to the language of publication, being higher in those published in English. The reporting completeness in CPG for critically ill adults was low, with a strong correlation with the methodological quality. High values of reporting completeness scores were observed between CPG recommended by AGREE II (with moderate or acceptable quality) and in those including a methodologist/statistician in the development team.
This paper engages with a series of recent literatures that examine how feminist and queer movements have become agents of nationalism, neoliberalism, and global wars. I argue that, while the critique of intersectionality has attempted to curtail the reproductions of such violence within feminism, it too has not been able to resist cooptations into nationalist and capitalist forms of power. Developing an epistemological critique of intersectionality, I arrive at an analysis of identity politics as an elemental identification with phallic power that erases the feminine. Building on the works of Elizabeth Grosz, Wendy Brown, and Luce Irigaray, I suggest that at the core of such feminist alliances with domination lies an unresolved relation to feminine desire as the desire for a non-identitarian politics.
The delta invariant interprets the criterion for the K-(poly)stability of log terminal Fano varieties. In this paper, we determine local delta invariants for all weak del Pezzo surfaces with the anti-canonical degree $\geq 5$.
Limited academic career prospects are pushing PhD graduates in political science and other disciplines to nonacademic careers. Understanding the mismatch between student and supervisor perceptions of doctoral career training is a starting point for suggesting program reforms. This research note examines the perceptions of PhD students and supervisors on doctoral career training. We compare results from two surveys of English-speaking Canadian universities on doctoral political science programs; one surveys PhD students and the other surveys supervisors. These survey results suggest that 1) students are more aware of the limited academic job market and interested in nonacademic careers than supervisors realize; 2) supervisors are unaware of the sunk costs PhD students face; 3) supervisors and students have different preferences for change in doctoral programs; and 4) students overestimate supervisors’ confidence in preparing them for nonacademic careers. Changes in program design can better meet student needs in these PhD programs.
The exercise of environmental ‘leverage’ via trade-related measures and trade in environmental goods offers opportunities to tackle the climate crisis and advance transnational decarbonization. Inward-looking, adversarial, and short-term national security-centred approaches, however, are disrupting the trade and climate change mitigation linkage. This article employs the race for critical raw materials and US and EU strategies to promote the net-zero transition at the domestic level as case studies to illustrate the environmental pitfalls of the ‘securitization’ of the trade and climate change mitigation nexus. The article demonstrates that the pursuit of strategic dominance in key net-zero sectors, attempts to exclude systemic rivals and reshore supply chains, opportunistic forms of friendshoring and loose agreement on regulatory means jeopardize recourse to environmental ‘leverage’ and undermine decarbonization at both national and transnational levels. This analysis casts a light on the inherent tension between national security and climate change mitigation. Taking stock of these findings, the article advocates a radically different approach to the governance of the trade and climate change mitigation nexus.
The three-dimensional flow field past an I-shaped dual-step cylinder has been obtained by numerical integration of the Navier–Stokes equations at Reynolds number ($Re_D$) 150. The I-shaped cylinder consisted of two large-diameter (D) cylinders with a small-diameter (d) cylinder in between. With a view to exploring the vortex dynamics and structural loads, simulations were performed for eight different lengths $l$ of the small cylinder, varied from $l/D=10$ to 0.2 for a fixed diameter ratio $D/d=2$. When the length of the small cylinder is sufficiently large, the wake behind the I-shaped cylinder is similar to the wake behind the single-step cylinder (Tian et al., J. Fluid Mech., vol. 891, 2020, A24). As the small cylinder length decreases, the enhanced interactions between the two steps make the present wake deviate from the wake of the single-step cylinder, leading to four different wake modes distinguished by different combinations of vortex cells. The physical formation mechanisms were analysed in terms of the vortex dynamics. Besides the wake flow, the streamwise vortices around the I-shaped step cylinder were also investigated. A pair of edge vortices and a junction vortex were identified for $l/D \geq ~1$. When the gap between the two steps becomes too small, $l/D \leq ~0.2$, the junction vortex disappears, and only a pair of edge vortices exists. Varying the distance between the two steps strongly affects the structural loads (drag and lift) along the I-shaped cylinder. The dependence of the loads on $l/D$ was readily explained by the different wake modes.
We consider time-inhomogeneous ordinary differential equations (ODEs) whose parameters are governed by an underlying ergodic Markov process. When this underlying process is accelerated by a factor $\varepsilon^{-1}$, an averaging phenomenon occurs and the solution of the ODE converges to a deterministic ODE as $\varepsilon$ vanishes. We are interested in cases where this averaged flow is globally attracted to a point. In that case, the equilibrium distribution of the solution of the ODE converges to a Dirac mass at this point. We prove an asymptotic expansion in terms of $\varepsilon$ for this convergence, with a somewhat explicit formula for the first-order term. The results are applied in three contexts: linear Markov-modulated ODEs, randomized splitting schemes, and Lotka–Volterra models in a random environment. In particular, as a corollary, we prove the existence of two matrices whose convex combinations are all stable but are such that, for a suitable jump rate, the top Lyapunov exponent of a Markov-modulated linear ODE switching between these two matrices is positive.
Borderline personality disorder (BPD) is a highly stigmatised mental disorder. A variety of research exists highlighting the stigma experienced by individuals with BPD and the impacts of such prejudices on their lives. Similarly, much research exists on the benefits of engaging in compassionate acts, including improved mental health recovery. However, there is a notable gap in understanding how stigma experienced by people with BPD acts as a barrier to compassion and by extension recovery. This paper synthesises these perspectives, examining common barriers to compassionate acts, the impact of stigma on people with BPD, and how these barriers are exacerbated for individuals with BPD due to the stigma they face. The synthesis of perspectives in the article highlights the critical role of compassion in supporting the recovery of individuals with BPD, while also revealing the significant barriers posed by stigma. Addressing these challenges requires a comprehensive understanding of the intersection between compassion and stigma, informing the development of targeted interventions to promote well-being and recovery for individuals with BPD.
This paper engages in a comprehensive analysis of the historical processes leading to the destruction of the Original Nations of Belarus and Latvia. The research is structured in three sections, with the first outlining the tribal roots common to both Latvian and Belarusian nations, serving as a foundation for subsequent analyses. The second section constitutes the core of the research, employing an Original Nation approach to dissect the impact of historic occupations in the five key waves—religious conversion, invasions of the Mongol-Tatar Yoke that led to administrative integration into states, a language push under the Russian Empire, identity erasure during Sovietization, and lastly, the restoration of independence in both countries. The last section surveys the modern states of Belarus and Latvia, emphasising their endeavours to revive their Original Nations, as both nations share the burden of recovering lost national elements, resisting cultural repression, and building a robust national identity.
This article recovers a lost era of Sino-American constitutional imagination surrounding the drafting of the 1946 Republic of China Constitution. It examines the transnational dynamics that led the Constitution's initial drafter, Zhang Junmai or Carsun Chang, to travel to the U.S. in 1945 to ostensibly study the ideas of Thomas Jefferson then ascendant in New Deal constitutional rhetoric. Recovering this episode recontextualizes Chang's early and late life as one of China's cosmopolitan intellectuals emerging from its contentious post-1911 dynastic politics who shaped China's engagement with evolving institutions of the modern international legal order. This recontextualization broadens and revises extant accounts of Chang's engagement with the 1946 constitutional drafting process by challenging accepted understandings of Chang's personal and intellectual trajectory and illuminating how the geopolitics of the Chinese Civil War intersected with presumptions about the overseas projection of American constitutional values increasingly embedded in twentieth-century American internationalism. Herein, Chang's long-standing interest in Jefferson's constitutional ideals was reshaped by the strategic considerations he faced situated between his consistent criticism of Guomindang leader Chiang-Kai Shek and Chang's suddenly heightened status among American political leaders. His near year-long stay in the U.S. before the 1946 drafting process involved many little known but determinative turns, including the role of a subset of Roosevelt and Truman Administration officials actively enamored with Jefferson's own study of Confucianism. The article also details the telling contours of Chang's post-1949 life as a political exile in the United States. Ultimately, this recovered episode demonstrates the pervasive and impactful nature of transnational dynamics in modern Sino-American relations which blur the line between national and international legal history. Most broadly, the fallout from the 1946 drafting process and the varied Chinese interpretations of thinkers like Jefferson reflect the mid-twentieth century transition of America from a global symbol of constitutional revolution to a global symbol of racialized empire. Recapturing this era thus also has implications for originalist-styled constitutional arguments made in contemporary Taiwan as well as for evaluating the international dimensions of Jefferson's problematic domestic legacy.
A liquid drop impacting a rigid substrate undergoes deformation and spreading due to normal reaction forces, which are counteracted by surface tension. On a non-wetting substrate, the drop subsequently retracts and takes off. Our recent work (Zhang et al., Phys. Rev. Lett., vol. 129, 2022, 104501) revealed two peaks in the temporal evolution of the normal force $F(t)$ – one at impact and another at jump-off. The second peak coincides with a Worthington jet formation, which vanishes at high viscosities due to increased viscous dissipation affecting flow focusing. In this article, using experiments, direct numerical simulations and scaling arguments, we characterize both the peak amplitude $F_1$ at impact and the one at takeoff ($F_2$) and elucidate their dependency on the control parameters: the Weber number $We$ (dimensionless impact kinetic energy) and the Ohnesorge number $Oh$ (dimensionless viscosity). The first peak amplitude $F_1$ and the time $t_1$ to reach it depend on inertial time scales for low viscosity liquids, remaining nearly constant for viscosities up to 100 times that of water. For high viscosity liquids, we balance the rate of change in kinetic energy with viscous dissipation to obtain new scaling laws: $F_1/F_\rho \sim \sqrt {Oh}$ and $t_1/\tau _\rho \sim 1/\sqrt {Oh}$, where $F_\rho$ and $\tau _\rho$ are the inertial force and time scales, respectively, which are consistent with our data. The time $t_2$ at which the amplitude $F_2$ appears is set by the inertiocapillary time scale $\tau _\gamma$, independent of both the viscosity and the impact velocity of the drop. However, these properties dictate the magnitude of this amplitude.
This study aims to uncover the dynamics of the evolution of English in Rwanda, using Schneider's (2007) Dynamic Model. Even though Rwanda has had no history of British colonial rule or that of any other Anglophone country, it currently presents a situation of a non-postcolonial environment where English plays a preponderant role on a par with many dimensions of the status of English in Outer Circle counties such as Uganda or Ghana. Despite the fact that the Dynamic Model was primarily meant to account for the evolution of English in postcolonial environments, its applicability (with a few caveats) to the current linguistic situation in Rwanda provides a robust articulation of the trajectorial development of English in this country.
Market-driven neoliberal ideology advocates for the adoption of English as the common business language by multinational companies; however, this often clashes with multilingual realities. This study explores how neoliberal ideologies have made English a catalyst for language-related conflicts within language management across various stages at a Shanghai-based subsidiary of a German multinational corporation. Data for this research was gathered via a seven-month ethnographic study and includes analysis of publicly accessible documents from the company's website, meeting transcripts, ethnographic notes, and semi-structured interviews with five local employees. Qualitative data analysis identified conflicts in the company's recruitment process, daily business communication, and language support services. Conflicting language management created communicative barriers and limited local employees’ engagement in the company's business affairs. Through a neoliberal lens, the findings highlight that when neoliberal English dominance encounters multilingual realities, the latter may undermine the efficiency and profitability central to neoliberal objectives. It is concluded that a reinterpreting of the neoliberal agenda is important for both policy makers and local employees to reconfigure neoliberal subjectivity, alongside measures to empower local employees’ linguistic and epistemic resources to facilitate their full participation in corporate affairs.
We identify a new mechanism of opportunistic insider trading linked to attention-driven mispricing. Insiders are more likely to sell their company’s stock during periods of heightened retail attention and more inclined to buy when attention diminishes. The results are particularly pronounced for lottery-type stocks and firms with substantial retail ownership. We demonstrate that our findings—which relate to indicators of mispricing, retail order imbalances, and Robinhood herding episodes—extend to seasoned equity issuances and cannot be solely explained by firm fundamentals. Attention-based insider trading is less likely to result in SEC enforcement actions and persists across different regulatory regimes.
A complete description of all possible multiplicative groups of finite skew left braces whose additive group has trivial centre is given. As a consequence, some earlier results of Tsang can be improved and an answer to an open question set by Tsang at Ischia Group Theory 2024 Conference is provided.
This short report discusses the resources to be found in the Railway Archive in Sekondi-Takoradi, Ghana. This report is also the result of various exploratory missions, as part of a cooperative effort between the Ghana Railway Company, the Institute of African Studies of the University of Ghana, and the International Institute of Social History, the Netherlands. The archive under consideration is classified as an institutional archive which provides unique insights into the social and labor history of Ghana– then Gold Coast– with some connections to West Africa and Great Britain. The archives provide additional material to the resources in the national archives in Ghana, best known as the Public Records and Archives Administration Department (PRAAD).
The online dating application has in recent years become a major avenue for meeting potential partners. However, while the digital public sphere has gained the attention of political philosophers, a systematic normative evaluation of issues arising in the “digital sexual sphere” is lacking. I provide a philosophical framework for assessing the conduct of dating app corporations, capturing both the motivations of users, and the reason why they find usage unsatisfying. Identifying dating apps as agents intervening in a social institution necessary for the reproduction of society, with immense power over people’s lives, I ask if they exercise their power in line with individuals’ interests. Acknowledging that people have claims to noninterference, equal standing, and choice improvement relating to intimacy, I find that the traditional, nondigital, sexual sphere poses problems to their realisation, especially for sexual minorities. In this context, apps’ potential for justice in the sexual sphere is immense but unfulfilled.