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This study uses a coupled lattice Boltzmann and discrete element method to perform interface-resolved simulations of turbulent channel flow laden with finite-size cylindrical particles. The aim is to investigate interactions between wall-bounded turbulence and non-spherical particles with sharp edges. The particle-to-fluid density ratio is unity and gravity is neglected. Comparative analyses are conducted among long (length-to-diameter aspect ratio 2), unit (1) and short ($ 1/2 $) cylinders, along with spheres and literature data for spheroids. Results reveal both shared and distinct dynamic behaviours of cylinders and their effects on turbulence modulation. Notably, disk-like short cylinders can remain trapped near the wall due to their flat faces aligning closely with it – a behaviour unique to particles with sharp edges. Long and unit cylinders, as well as spheres, preferentially accumulate in high-speed streaks, while short cylinders cluster in low-speed streaks, demonstrating a strong aspect-ratio effect. Near the wall, long cylinders align their axis with the streamwise direction, while short cylinders orient perpendicular to the wall. Rotationally, long cylinders primarily spin, whereas short ones predominantly tumble. These trends arise from orientation preferences and differences in axial and spanwise moments of inertia. Cylindrical particles increase wall drag compared with the single-phase case, with short cylinders causing the greatest enhancement due to strong near-wall accumulation. Overall, the influence of aspect ratio on particle dynamics and turbulence modulation is more pronounced for cylindrical particles than for spheroidal ones.
The Kurdish movement in Turkey illustrates a complex struggle for political recognition and decolonization. The article examines this dual strategic orientation, focusing on the peace process initiated in October 2024 between the Turkish state and Kurdish representatives. Through a detailed and symptomatic reading of the two texts by Abdullah Öcalan, February Call and Perspektif, the article aims to demonstrate that the movement both interacts with the state to secure democratic prerequisites for political participation and continues to promote a radical critique of capitalist modernity and nation-state structures. Drawing upon Axel Honneth’s recognition theory and Étienne Balibar’s concept of “equaliberty,” the struggle for recognition is no longer seen just to result in a depoliticization through governmental control, but is rethought as building the capacity to stage an ongoing, performative process that manages the constitutive tension between equality and autonomy within Kurdish decolonial practice. This approach raises questions about how the movement navigates state structures while promoting alternative social institutions and epistemic spaces, including the problematic site of communes as a form of democratic autonomous experimentation.
To evaluate ultraviolet-C (UV-C) disinfection, we interviewed 34 personnel at 22 Veterans Affairs (VA) hospitals. Barriers included safety concerns, patient volumes, staffing, and costs. Facilitators included education and interprofessional communication. An implementation toolkit, interprofessional collaboration, and leadership support could optimize UV-C integration into VA infection prevention.
Previous studies have primarily advocated enhancing the deterrent effects of sanctions against offending firms to prevent organizational environmental violations. However, despite stricter regulatory environments, violations that cross the ‘red line’ remain pervasive. Limited research has delved into the factors that influence an organization’s ability to learn from environmental sanctions imposed on others. To address this gap, inspired by social learning theory, we examine whether environmental sanctions imposed on violating firms deter environmental governance among their industry and regional peers using a sample of Chinese-listed firms from 2008 to 2021. Our findings indicate that increasing the frequency and severity of penalties for offending firms – particularly those leading firms and state-owned-enterprises or those with close ties – can affect the environmental governance practices of their peers, both in terms of process and outcome, underscoring the critical role of peer influence in enforcing environmental regulations. Additionally, the current article also concludes that the general deterrence effect on peers is more pronounced in competitive industries and regions with underdeveloped legal frameworks.
This article presents the results of excavations in Early Bronze Age levels at the site of Hamoukar in northeastern Syria. During the 2008 and 2010 field seasons, excavations in the lower town at Hamoukar uncovered evidence for three distinct architectural phases dating to the second half of the third millennium B.C. Prior to these excavations, attention had been focused on the final phase of Early Bronze Age occupation in the lower town, when the settlement was violently destroyed and then abandoned. It is now possible, however, to provide a backstory for the settlement’s violent end and also a more complicated––if still preliminary––account of exactly how the urbanisation process played out at the site. This article presents a summary of the Early Bronze Age stratigraphic sequence in the lower town at Hamoukar and, at the same time, a description of new evidence for the evolution of social, economic, and ritual practice across three phases of urban development. A brief comparison with urban trajectories at two other contemporary sites highlights the heterogeneity of cities and urban dynamics in Early Bronze Age northern Mesopotamia.
This article contributes to a growing body of literature on special jurisprudence through a case study of energy law as an emergent area of law that is perceived to lack a clear understanding of its definition, foundations and doctrine. The article has two functions that both seek to integrate the literature on special (as opposed to general) jurisprudence with that on energy law as a legal discipline and an independent area of law. The first is to explain why the lack of a doctrine is a problem for a field like energy law, thus motivating the creation of a special jurisprudence. The second is to outline how the foundations of the discipline could be deliberatively developed in a meaningful and methodologically justified way.
Based on an analysis of the situation in France after the uprising of May 13, 1958, this article analyzes the theoretical and empirical class of ambiguous political events. During such events, the holders of political power, faced with an actor who has assumed a political role by transgressing the established order, must take a stance. Since contradictory meanings can be attributed to the challenger’s actions based on the categories of thought constituting that order, the power holders experience an ambiguity: they are unable to say “how things stand with what is,” to use Luc Boltanski’s expression. The challenge, then, is to elucidate both the process through which they can leave their cognitive uncertainty behind and the conditions that would make that possible. This approach sheds light on the transition from one political order to another.
Adapting Barker’s ((2019). The Journal of Navigation, 72(3), 539–554) taxonomy of wayfinding behaviours – originally developed for man-made environments, paper and screen – we examined which behaviours are also found in the outdoors. In the analysis of the collected data from a questionnaire (n=401), we find that participants employ every category in Barker’s framework of social, semantic and spatial behaviours. Our respondents report the use of digital maps on a mobile phone as the most common behaviour, with following directional signs as the second most used. Furthermore, social wayfinding behaviours figure prominently and the participants express preferences for various information sources. We demonstrate similarities of behaviours across the different types of environments and we confirm the applicability of Barker’s taxonomy of wayfinding behaviours also in nature. Our study generates knowledge that potentially can make navigation simpler and more efficient through wayfinding design, and lead to heightened feeling of safety in the outdoors. Wayfinding behaviour studies, like this one, can serve as a bridge between human psychology and practical design.
For each three-dimensional non-Lie Leibniz algebra over the complex numbers, we describe the algebra of polynomial invariants and determine its group of automorphisms. As a consequence, we establish that any two non-nilpotent three-dimensional non-Lie Leibniz algebras can be distinguished by the traces of degrees $\leqslant 2$ and by the dimensions of their automorphism groups.
In this work we propose a neural operator-based coloured-in-time forcing model to predict space–time characteristics of large-scale turbulent structures in channel flows. The resolvent-based method has emerged as a powerful tool to capture dominant dynamics and associated spatial structures of turbulent flows. However, the method faces the difficulty in modelling the coloured-in-time nonlinear forcing, which often leads to large predictive discrepancies in the frequency spectra of velocity fluctuations. Although the eddy viscosity has been introduced to enhance the resolvent-based method by partially accounting for the forcing colour, it is still not able to accurately capture the decay rate of the time-correlation function. Also, the uncertainty in the modelled eddy viscosity can significantly limit the predictive reliability of the method. In view of these difficulties, we propose using the neural operator based on the DeepONet architecture to model the stochastic forcing as a function of mean velocity and eddy viscosity. Specifically, the DeepONet-based model is constructed to map an arbitrary eddy-viscosity profile and corresponding mean velocity to stochastic forcing spectra based on the direct numerical simulation data at $Re_\tau =180$. Furthermore, the learned forcing model is integrated with the resolvent operator, which enables predicting the space–time flow statistics based on the eddy viscosity and mean velocity from the Reynolds-averaged Navier–Stokes (RANS) method. Our results show that the proposed forcing model can accurately predict the frequency spectra of velocity in channel flows at different characteristic scales. Moreover, the model remains robust across different RANS-provided eddy viscosities and generalises well to $Re_\tau =550$.
Developing Consumers: A History of Wants and Needs in Postwar South America offers a comparative social and economic history of South America’s developmental decades, from the 1950s to the mid-1970s. In the aftermath of World War II, Argentina, Brazil, and Chile implemented state-led strategies to secure economic sovereignty, raise living standards, and expand domestic markets. These policies made durable goods such as refrigerators, automobiles, and televisions increasingly available, yet access remained uneven across class, gender, and racial lines. By the 1960s, these commodities had become powerful symbols of modern well-being.
The dissertation examines how people experienced this transformation and how new forms of consumption reshaped ideas of welfare, citizenship, and inequality. By the decade’s end, it was clear that the developmental state could not deliver social mobility or universal access to modern comforts, leading to widespread frustration. Policy makers, marketing experts, and intellectuals debated how to “rationalize” consumption—deciding which needs should be guaranteed for all and which reflected elite privilege.
The global proliferation of Chinese investments has raised national security concerns among many host States. Western economies such as the United States and Australia have strengthened their foreign investment screening (FIS) regimes partially in response to these concerns. Korea and Japan, as representative East Asian economies, have also joined the trend of strengthening FIS regimes to manage security risks associated with foreign investments. This article investigates whether national security has also emerged as a focal point of confrontation between developed East Asian countries and China in international investment landscape. It investigates China’s legal concept of national security and its growing importance in the country’s foreign investment policy. It then examines the FIS regimes in Korea and Japan as well as their practical operations in relation to Chinese investments, with a focus on how national security concerns have shaped their approaches to Chinese investments. This article argues that a national security-focused confrontation has emerged between developed East Asian countries and China in the international investment landscape as a result of their shared national security concerns. Korea and Japan should avoid politicising their FIS regimes in order to prevent potential violations of international investment law and contribute to East Asian economic harmony.
Benzodiazepine receptor agonists (BZRAs), including benzodiazepines and Z-drugs, are frequently prescribed during pregnancy but their long-term neurodevelopmental safety remains uncertain.
Aims
To investigate whether prenatal BZRA exposure is associated with an increased long-term risk of neurodevelopmental disorders (LNDDs) in offspring.
Method
This nationwide, population-based cohort study used Korean National Health Insurance Service data on all live births from 2011 to 2014, followed until 2023. Prenatal BZRA exposure was defined as maternal prescriptions during pregnancy. Propensity score matching (1:10) was applied to balance covariates. Sensitivity analyses in the full cohort evaluated exposure intensity (0, 1–6, 7–29 and ≥30 cumulative days), drug class (benzodiazepines versus Z-drugs), trimester of exposure and discordant sibling comparisons with mother fixed effects.
Results
Among 1 553 505 eligible births, 5949 BZRA-exposed and 55 015 matched unexposed children were analysed. LNDD incidence was 13.9% in the exposed group versus 11.4% in the unexposed (odds ratio 1.25, 95% CI: 1.16, 1.35). In the full cohort, risks increased with exposure intensity: 1–6 days (odds ratio 1.16, 95% CI: 1.05–1.28), 7–29 days (odds ratio 1.19, 95% CI: 1.04–1.36) and ≥30 days (odds ratio 1.18, 95% CI: 1.01–1.38). By trimester, risks were higher with second- (odds ratio 1.30, 95% CI: 1.07–1.59) and third-trimester (odds ratio 1.27, 95% CI: 1.09–1.48) exposure. Class-specific analyses showed stronger associations for benzodiazepines only (odds ratio 1.19, 95% CI: 1.15–1.23) than for Z-drugs only (odds ratio 1.06, 95% CI: 1.04–1.08). In a discordant sibling analysis including 2572 children this association persisted (odds ratio 1.29, 95% CI: 1.05–1.60), indicating that neither familial nor genetic confounding fully explains the observed effects.
Conclusions
Prenatal BZRA exposure was associated with increased long-term risks of LNDDs in offspring, with evidence of dose–response and class-specific effects, and persistence in sibling analyses.