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How do state actors interpret and share information? Theories of the state have long recognized the role of legibility – the modes and practices by which states render society and nature knowable through intervention and information collection – in constructing and maintaining state power. Yet, research has only begun to explore the processes by which information is created and diffused within state administrations. Drawing upon theories of agency relations in states, this article explores how administrators’ communicative practices shape knowledge and legibility. Through examining memos, legislative studies, and draft legislation for decrees recognizing water rights in the French Protectorate in Morocco, I identify a set of common patterns in the construction of bureaucratic information as it moves from street-level administrators to central officials. In analyzing these patterns, I demonstrate how administrators’ obligations and their understandings of the state’s political projects determined not only how French officials collected information, but what they communicated to others. As information moved across administrative levels, officials iteratively changed information. Joining critiques and extensions of legibility theory that emphasize the role of non-state actors in the construction of state knowledge, I argue that we must also attend to intra-state dynamics. In tracing communication and information, I demonstrate that information is iteratively constructed by state agents according to their administrative position and transformed by its particular bureaucratic routes. Modeling legibility and the development of state knowledge requires attending to administrators’ agency, their relationships with each other, and their understanding of the state’s goals.
Adenoid hypertrophy contributes to nasal obstruction and obstructive sleep disorders in children, but can be difficult to assess. This study examines whether inferior turbinate hypertrophy can predict adenoid hypertrophy severity in children with obstructive sleep disorders.
Methods
This retrospective cohort study included children (0–18 years) with a diagnosis of obstructive sleep-disordered breathing or obstructive sleep apnoea who underwent drug-induced sleep endoscopy. Analyses explored demographic, clinical and endoscopic associations with adenoid hypertrophy.
Results
A total of 269 children were included. Separate univariate analyses showed that older age and greater inferior turbinate hypertrophy predicted greater adenoid hypertrophy (p < 0.05). However, in multivariate ordered logistic regression, only inferior turbinate hypertrophy remained significant (p < 0.01), while age did not (p = 0.11).
Conclusion
These findings suggest inferior turbinate hypertrophy may serve as a proxy for adenoid hypertrophy, aiding clinicians in assessment and guiding further evaluation or intervention.
Although women leaders assume prominent national offices in the United States (and the world), one of the well-established specializations in political science and psychology (i.e., leadership studies) is inundated with male-centric benchmarks. This research often relies on a reference group to develop leaders’ profiles in comparison to other elites. They are predominantly populated, however, with male leaders. This article suggests a remedy and introduces a women leaders reference group for operational code analysis, which is a quantitative approach measuring leaders’ beliefs about politics. We gathered American women leaders’ speeches from the Iowa State University Archives of Women’s Political Communication. Using an automated content analysis, we developed a norming group exclusively for American female politicians in national politics. Whereas our findings indicate noticeable differences and suggest similarities with existing reference groups, we aspire to initiate a conversation and hope that more data will follow and shed more light on women leaders. This reference group can serve as a crucial tool in providing contextualized political-personality profiles of American women leaders and also provide an illustrative example to bridge leadership and gender studies in advancing the study of women leaders in the United States (and beyond).
Fourier analysis is the standard tool of choice for quantifying the distribution of kinetic energy amongst the eddies in a turbulent flow. The resulting spectral energy-density function is the well-known energy spectrum. And yet, because eddies are distinct from waves, alternative approaches to finding energy-density functions have long been sought. Townsend (1976) outlined a promising approach to finding a spatial energy-density function, $V\!(r)$, where $r$ is the eddy size. Notably, this approach led to two distinct and mutually inconsistent formulations of $V\!(r)$ in homogeneous, isotropic turbulence. We revisit Townsend’s proposal and derive the corresponding three-dimensional $V\!(r)$ as well as introduce its one-dimensional variants (which, to our knowledge, have not been explicitly discussed before). By training our focus on the associated dimensionality of the function, we resolve the discrepancies between the previous formulations. Additionally, we generalise our analysis to include anisotropic flows. Finally, by means of concrete examples, we illustrate how one-dimensional spatial energy-density functions are useful for analysing empirical data. Some notable findings include new insights into the $k_1^{-1}$ scaling (where $k_1$ is the streamwise wavenumber) and a possible resolution of the enigmatic sizes of organised motions at large scales.
This article proposes the creation of constituency juries to enhance accountability and check oligarchy in representative governments. Constituency juries would be made up of randomly selected citizens from an electoral constituency who exercise oversight over that constituency’s elected representative. Elected representatives would be required to give a regular account of their actions to the constituency jury, and the jury would have the power to sanction the representative. In addition to this general model of constituency juries, I offer a more specific institutional design that shows how the general model can be operationalized and realistically incorporated into existing representative governments. In contrast to lottocratic proposals that replace elections with sortition, constituency juries are a promising way to combine the two to address the oligarchic tendencies of elections in representative government.
Shock interactions on a V-shaped blunt leading edge (VBLE) that are commonly encountered at the cowl lip of an inward-turning inlet are investigated at freestream Mach numbers ($ M_\infty$) 3–6. The swept blunt leading edges of the VBLE generate a pair of detached shocks with varying shapes due to the changes in $ M_\infty$ and $L/r$ (i.e. the ratio of the leading-edge length $L$ to the leading-edge blunt radius $r$), which causes intriguing shock interactions at the crotch of the VBLE. Three subtypes of regular reflection (RR) and a Mach reflection (MR) are produced successively with increasing $ M_\infty$ for a given $L/r$, which appear in the opposite order to those with increasing $L/r$ for a given $ M_\infty$. These shock interactions identified in numerical simulations are verified in supersonic and hypersonic wind tunnel experiments. It is demonstrated that the relative position of the shocks is crucial in determining the transitions of shock interactions by varying either $L/r$ or $ M_\infty$. Transition criteria between subtypes of RR and from RR to MR are theoretically established in the parameter space $(M_\infty,L/r)$ by analysing the shock structures, showing good agreement with the numerical and experimental results. Interactions between either immature or fully developed detached shocks are embedded in these criteria. Specifically, the transition criteria asymptotically approach the corresponding critical $ M_\infty$ when $L/r$ is sufficiently large. These transition criteria provide guidelines for improving the design of the cowl lip of an inward-turning inlet in supersonic and hypersonic regimes.
Experiments were performed that (i) document the effect of the steady spanwise buffer layer blowing on the mean characteristics of the turbulent boundary layer for a range of momentum thickness Reynolds numbers from 4760 to 10 386, and (ii) document the effect of the buffer layer blowing on the unsteady characteristics and coherent vorticity in a boundary layer designed to provide sufficiently high spatial resolution. The spanwise buffer layer blowing of the order of $u_{\tau }$ is produced by a surface array of pulsating direct current (pulsed-DC) plasma actuators. This was found to substantially reduce the wall shear stress that was directly measured with a floating element coupled with a force sensor. The direct wall shear measurements agreed with values derived using the Clauser method to within $\pm 0.85$ %. The degree to which the buffer layer blowing affected $\tau _w$ was found to primarily depend on the inner variable spanwise spacing between the pulsed-DC actuator electrodes, i.e. ‘blowing sites’. Utilizing pairs of $[u,v]$ and $[u,w]$ hot-wire sensors, the latter experiments correlated significant reductions in the $\omega _y$ and $\omega _x$ vorticity components that resulted from the buffer layer blowing and translated into lower Reynolds stresses and turbulence production. The time scale to which these observed changes in the boundary layer characteristics would return to the baseline condition was subsequently documented. This revealed a recovery length of $x^+ \approx 86\,000$ that translated to a streamwise fetch of $x \approx 66\delta$. Finally, a comparison with the recent work by Cheng et al. (2021, J. Fluid Mech. vol. 918, A24) and Wei & Zhou (2024 in TSFP13, June 25–28, 2024) that followed our experimental approach to achieve comparable wall shear stress (drag) reductions has led to a new scaling based on the baseline boundary layer $\textit{Re}_{\tau }$ and buffer layer blowing velocity.
Securitization scholars in Canada have investigated how settler-colonial governments discursively construct extractive infrastructure and policing on Indigenous lands as “critical” for Canada’s economic security. Less literature exists about how Indigenous activists through provincial institutions counter colonial securitization discourse and legislation. This article interrogates discourse in the Manitoba Legislature pertaining to three “critical infrastructure” bills presented by the PC government during the fall 2020 and winter 2021 sessions: Protection of Critical Infrastructure Act (Bill 57), Animal Diseases Amendment Act (Bill 62), and The Petty Trespassers Amendment and Occupiers’ Liability Amendment Act (Bill 63). The study combines an analysis of the bills’ debates, drawn from Hansard, with an interview with then-official opposition house leader, Nahanni Fontaine, to explore the interactions between securitization and counter-securitization discourse(s) and defeat of Bill 57. The study hypothesizes that Indigenous MLAs’ counter-securitization discourse reconstructed the bills as attacks on Indigenous ontological, environmental, and physical security.
The Taylor–Melcher leaky dielectric (LD) model is often used to study the physics of electrosprays operating in the cone-jet mode. Despite its success, there are electrospraying conditions in which the ion concentration fields must be retained, which requires an electrokinetic model. This article reproduces cone-jets with two electrokinetic formulations: the standard Poisson–Nernst–Planck (PNP) equations, and a modified electrokinetic (MEK) model that accounts for overscreening and overcrowding of electrolytes, which is important in fluids with high electrical conductivities such as ionic liquids (Kilic et al. 2007 Phys. Rev.E vol. 75, no. 2, 021502, 021503; Bazant et al. 2011 Phys. Rev.Lett. vol. 106, no. 4, 46102). In the case of liquids with low electrical conductivities, it is observed that the LD and PNP models agree under certain limiting conditions, but they are less restrictive than previously proposed (Baygents & Saville 1990 AIP Conf. Proc. vol. 197, 7–17; Schnitzer & Yariv 2015 Fluid Mech. vol. 773, 1–33); the effects of dissimilar ion diffusivities are also investigated. In the case of liquids with high electrical conductivities, in particular ionic liquids, overscreening and overcrowding effects are important, resulting in significant differences between the solutions of the PNP, MEK and LD models. In particular, the electrokinetic models yield increased dissipation and self-heating, leading to higher temperature variations and currents, in agreement with measurements. Furthermore, the MEK formulation describes the ion concentration fields with higher fidelity than the PNP equations.
Comprising the largest group of health care professionals, nurses play a great role and assume many responsibilities during disaster periods, when the public needs health care services the most. The aim of this study was to reveal the experiences of nurses assigned to the disaster area during relief efforts after the February 6, 2023 earthquakes in Türkiye.
Methods
This qualitative and descriptive study used the maximum variation sampling method, one of the purposive sampling methods, and was completed with 20 nurses. Data were analyzed using inductive content analysis.
Results
Four main themes emerged from the experiences of the nurses who provided health care services in the disaster area: experiences related to pre-mission processes, experiences during the mission, post-mission experiences, and recommendations for disaster preparedness.
Conclusions
Nurses’ experiences and suggestions revealed in this study may inform future disaster preparedness and disaster management plans, and this study’s results point to the need for the development of professional nursing skills in disaster management.
Ear arteriovenous malformation is a complex problem with a lack of data and a clear consensus on its management. This paper aims to develop an algorithm for protocol-based ear arteriovenous malformation management.
Method
All patients underwent pre-operative discussions at a multi-disciplinary team meeting to plan excision and pre-operative embolisation.
Results
Nineteen patients were included in this study. Following excision, 26.3 per cent of cases had flap cover, 10.5 per cent needed a skin graft, 15.3 per cent had total amputation of the ear, and the rest underwent excision of the arteriovenous malformation with or without cartilage excision and primary closure. Recurrence was observed in 10.5 per cent of cases.
Conclusion
Surgical excision is the treatment of choice for ear arteriovenous malformations. Cartilage should be preserved whenever possible. The wound cover should be either a primary closure or a flap cover. A protocol-based guide facilitates decision-making of this complex problem.
Following the French example, the Meloni government has introduced the phrase ‘sovranità alimentare’ (sovereignty in food) into the title of the ministry of agriculture, and makes clear that it is engaging in a very determined effort to defend and promote the cultural heritage of Italian cuisine on all fronts, at home and abroad. But the origins of this impulse go back to the 1980s and the arrival of the McDonald’s hamburger chain, which gave birth to the Slow Food movement, now a global phenomenon. All this conceals several paradoxes: Italian cuisine has always been open to hybridised versions invented elsewhere (especially in America); production in key sectors, including wine, depends on large numbers of immigrant workers at a time when the government is trying to discourage immigration; and the ‘sovereignty in food’ concept unwittingly unites the government and some of its most radical opponents. But the very basis of this concept is challenged by the hyper-protectionist trade policy of the Trump administration.
This article examines the Philippines’ engagement with international law and institutions under Duterte’s populist presidency. While populism is often associated with hostility toward multilateralism, this case study reveals a more nuanced dynamic. The article argues that state engagement under populist administrations is more complex than assumed, and populist rhetoric does not uniformly dictate international behaviour. Using a novel conceptual framework and empirical data, it analyzes the Philippines’ multilateral interactions in human rights, trade, and health. Duterte’s government displayed ritualistic engagement with the United Nations Human Rights Council (UNHRC), constructive engagement with the World Trade Organization (WTO) and World Health Organization (WHO), and destructive disengagement from the International Criminal Court (ICC). Key themes include the divergence between rhetoric and action, instrumental use of institutions for domestic priorities, and the critical filtering role of domestic institutions. These findings offer broader insights as to how populist states balance domestic imperatives with international commitments, offering broader insights into the interplay between populism, foreign policy, and multilateralism.
In this study, we demonstrate, for the first time, the existence of a short-wave instability in a Lamb–Oseen vortex subjected to a triangular strain field generated by three satellite vortices, which we term the triangular instability. We identify this instability by numerically integrating the linearised Navier–Stokes equations around a quasi-steady base flow to capture the most unstable mode and validate it by comparing results with theoretical predictions. We evaluate this instability by calculating the growth rates associated with the parametric resonant coupling of two Kelvin waves with the triangular strain field in the limit of small strain rate and large Reynolds number. Our analysis reveals that resonance occurs only for combinations of the azimuthal wavenumbers $m = 1$ and $m = - 2$ (or their symmetric counterparts with opposite signs). We observe several unstable modes with positive growth rates for a moderate viscous Reynolds number $10^4$ and straining parameter value $\epsilon = 0.008$, defined as the cube of the ratio of the core size to the distance from the satellite vortices. The most unstable mode, dominant at typically high Reynolds numbers, has $k \approx 5.18/a$ and $\omega \approx - 0.312\Omega$ (where $a$ and $\Omega$ denote the core size and central angular velocity). It exhibits negligible critical layer damping and remains the most unstable mode over a wide range of ${Re}$ and $\epsilon$. At lower Reynolds numbers, another mode with $k \approx 1.76/a$ and $\omega \approx - 0.407\Omega$, despite significant critical layer damping, becomes the most unstable.
This study provides a comprehensive analysis of the impact of helideck surface conditions on the safe operation of helicopter landing and take-off platforms on offshore drilling vessels. Over time, the deterioration of helideck surface coatings necessitates periodic friction coefficient testing every two years in compliance with international standards. Surface coatings that fail to meet the required thresholds are replaced, and the performance of the renewed surface is reassessed using the Helideck Micro GripTester (HMGT), in accordance with U.K. Safety Regulation Group CAP 437 (2023) standards for offshore helicopter landing areas. The findings indicate that the renewed helideck surface coatings lead to a significant increase in the coefficient of friction, thereby enhancing the stability of helicopters upon landing and while on deck. Independent sample t-test and correlation analyses confirmed statistically significant differences between the old and new surface conditions, demonstrating the positive impact of surface improvements on coefficient of friction and, therefore, operational safety. Furthermore, machine learning techniques were employed to model and analyse the non-linear relationships between surface conditions and flow number. The model results demonstrate that variations in helideck surface coatings directly influence helicopter performance and operational safety. These findings underscore the critical importance of regular resurfacing and friction testing in ensuring the safety and reliability of offshore helicopter operations.