I analyze factory worker households in the early 1920s in Osaka to examine idiosyncratic income shocks and consumption. Using the household-level monthly panel dataset, I find that while households could not fully cope with idiosyncratic income shocks at that time, they mitigated fluctuations in indispensable consumption during economic hardship. In terms of risk-coping mechanisms, I find suggestive evidence that savings institutions helped mitigate vulnerabilities and that both using borrowing institutions and adjusting labor supply served as risk-coping strategies among households with less savings.

Waitlists for long-term care (LTC) continue to grow, and it is anticipated aging populations will generate additional demand. While literature focuses on individual-level factors, little is known about system-level factors contributing to LTC waitlists. We considered these factors through a scoping review. Inclusion/exclusion included publication year (2000–2022), language, paper focus, and document type. A total of 815 abstracts were identified, only 17 studies were included. Through qualitative content analysis, 10 key factors were identified: (1) waitlist management styles, (2) inconsistent standards of admission, (3) personnel shortage, (4) insufficient community-based care, (5) inequitable distribution of services, (6) lack of system integration, (7) unintended consequences of insurance plans, (8) ranking preferences, (9) the debate of supply and demand, and (10) financial incentives. Targeting interventions to address waitlist management, community-based care capacity, and demographic trends could improve access. More research is needed to address system-level barriers to timely LTC access.

Based on extensive archival research encompassing over eighty rural authorities in Wales, this essay pieces together fragmentary evidence to reveal the main contours of rural responses to infectious outbreaks from the 1870s to the 1918/10 influenza pandemic. At the centre of the essay are those practical, short-term measures that have hitherto been overlooked in the historiography. While infectious outbreaks did have the capacity to extend sanitary initiatives over the medium and long term, looking at how rural authorities reacted to infectious disease helps us better understand how public health practices translated into action at a local level. In doing so, the essay untangles both the nature of rural responses and the challenges confronted by rural sanitary officials when confronted with infectious outbreaks and how they had to adapt public health orthodoxy to different rural environments.

Power, while fundamental to sociality, might be exercised with haphazard ferocity or more judiciously in legally constrained ways. Such constraint requires us first to understand how ruling paradigms work, and the effects of their powers, before entertaining suitable forms of legal limitation. Transposing Kuhn’s famous concept, this paper examines a ruling paradigm of biopolitical sovereignty at the Cape of Good Hope through two examples: the 1891 census’ racialized categorizations of the “population”; and a racialized segregation responding to the 1901 bubonic plague. Prefiguring apartheid, both examples indicate how colonial laws authorized discretionary biopowers and yet exempted themselves from monitoring how officials demarcated and governed racialized population groups. The paper touches on the growing maladroitness of positivist ideas about a sovereign “rule of law” in regulating arbitrary biopolitical forces. It concludes by briefly indicating the promise of legal pluralism and Indigenous legalities to check capricious biopowers while pursuing legitimate life-affirming forces.

An accurate prediction of turbulence has been very costly since it requires an infinitesimally small time step for advancing the governing equations to resolve the fast-evolving small-scale motions. With the recent development of various machine learning (ML) algorithms, the finite-time prediction of turbulence became one of promising options to relieve the computational burden. Yet, a reliable prediction of the small-scale motions is challenging. In this study, PredictionNet, a data-driven ML framework based on generative adversarial networks (GANs), was developed for fast prediction of turbulence with high accuracy down to the smallest scale using a relatively small number of parameters. In particular, we conducted learning of two-dimensional (2-D) decaying turbulence at finite lead times using direct numerical simulation data. The developed prediction model accurately predicted turbulent fields at a finite lead time of up to half the Eulerian integral time scale over which the large-scale motions remain fairly correlated. Scale decomposition was used to interpret the predictability depending on the spatial scale, and the role of latent variables in the discriminator network was investigated. The good performance of the GAN in predicting small-scale turbulence is attributed to the scale-selection and scale-interaction capability of the latent variable. Furthermore, by utilising PredictionNet as a surrogate model, a control model named ControlNet was developed to identify disturbance fields that drive the time evolution of the flow field in the direction that optimises the specified objective function.

We present a modified version of the well-known geometric Lorenz attractor. It consists of a $C^1$ open set ${\mathcal O}$ of vector fields in ${\mathbb R}^3$ having an attracting region ${\mathcal U}$ satisfying three properties. Namely, a unique singularity $\sigma $; a unique attractor $\Lambda $ including the singular point and the maximal invariant in ${\mathcal U}$ has at most two chain recurrence classes, which are $\Lambda $ and (at most) one hyperbolic horseshoe. The horseshoe and the singular attractor have a collision along with the union of $2$ codimension $1$ submanifolds which split ${\mathcal O}$ into three regions. By crossing this collision locus, the attractor and the horseshoe may merge into a two-sided Lorenz attractor, or they may exchange their nature: the Lorenz attractor expels the singular point $\sigma $ and becomes a horseshoe, and the horseshoe absorbs $\sigma $ becoming a Lorenz attractor.

Much sociological attention has focused on Black identity within the United States. Less attention, however, has been given to understanding how immigrant and native-born streams of U.S. Black Muslims articulate American identity. In this study I ask: how do second-generation Black American Muslims and indigenous Black American Muslims compare in the ways they narrate connections among race, American identity, and Islam? Using data from thirty-one in-depth interviews with Black Muslims living in Houston, TX, I find that racial double-consciousness complicates American identity for respondents. While indigenous Black American respondents critique racist U.S. histories and structural inequities, I argue that in certain spaces Muslim identity reinforces American identity. For second-generation respondents, however, American identity is reinforced through embracing immigrant status. This study extends Du Boisian double-consciousness by making a case for “layered double-consciousness.” I argue that layered double-consciousness better explains how Black Muslims perceive their racial, religious, and national identities across macro levels within the context of the United States and meso levels within the Muslim American community.

The theory of the terahertz (THz) waves emission from a near-critical plasma slab under the action of the focused p-polarized laser pulse is developed. The spectral, angular and energy characteristics of the THz signal are studied as functions of the focusing degree and the incidence angle of laser radiation, as well as the density and thickness of the plasma slab. It is shown that the extremely strong increase in the energy of the THz signal (up to millijoule level) and conversion rate (up to 10 %) occurs at the almost normal incidence of the ultra-short, tightly focused p-polarized laser pulse on the thin plasma slab with the near-critical density and rare electron collisions.

This article explores the analytical trajectory of desecuritisation strategies in the Global South through the case of Colombian refugees in Ecuador (2005–12). It maps desecuritisation strategies and their enabling and constraining factors against the backdrop of an entrenched infiltration discourse and an emerging rights-based discourse. The analysis of speeches, interviews, and policies demonstrates that governmental elites set in motion more transformative strategies when regional identity and emigration are raised in the political agenda. However, critical developments such as bilateral tensions and the lack of audience support sway desecuritisation towards more managerial strategies and ultimately, to resecuritisation. Shifting the empirical application of desecuritisation to this South American setting reveals the transformational capacity of desecuritisation strategies and reiterates the decisive role of the audience.

This study addresses a longstanding historical and archaeological problem at the central Cretan urban centre of Knossos. This is the so-called ‘Archaic gap’, an apparent dearth of evidence for sixth-century BCE material culture across the extensively excavated city. The concept of a pronounced Knossian decline or recession at this time has been reaffirmed in recent years, with widespread repercussions for Cretan archaeology. By reconsidering ceramics from the Royal Road North and Unexplored Mansion excavations, as well as situating these deposits within their urban and regional contexts, I question the epistemological foundations of the Knossian gap and provide new directions for identifying sixth-century Knossian material culture. I propose that the apparent ‘gap’ is a product of several factors: (1) a relative disinterest in imports in sixth-century Knossos, (2) a dispersed, rather than densely nucleated, urban settlement pattern, and (3) a previously unrecognised conservatism in Knossian ceramics, where some of the ‘Orientalising’ styles traditionally dated to the seventh century were retained into the sixth. This phenomenon of conservatism differs in important ways from the ‘restraint’ or ‘austerity’ that has been previously proposed as characteristic of Archaic and Classical Crete.

We report an experimental study about the effect of an obstructed centre on heat transport and flow reversal by inserting an adiabatic cylinder at the centre of a quasi-two-dimensional Rayleigh–Bénard convection cell. The experiments are carried out in a Rayleigh number ($Ra$) range of $2\times 10^7 \leq Ra \leq 2\times 10^9$ and at a Prandtl number ($Pr$) of $5.7$. It is found that for low $Ra$, the obstructed centre leads to a heat transfer enhancement of up to 21 $\%$, while as $Ra$ increases, the magnitude of the heat transfer enhancement decreases and the heat transfer efficiency ($Nu$) eventually converges to that of the unobstructed normal cell. Particle image velocimetry measurements show that the heat transfer enhancement originates from the change in flow topology due to the presence of the cylindrical obstruction. In the low-$Ra$ regime the presence of the obstruction promotes the transition of the flow topology from the four-roll state to the abnormal single-roll state then to the normal single-roll state with increasing obstruction size. While in the high-$Ra$ regime, the flow is always in the single-roll state regardless of the obstruction size, although the flow becomes more coherent with the size of the obstruction. We also found that in the presence of the cylindrical obstruction, the stability of the corner vortices is significantly reduced, leading to a large reduction in the frequency of flow reversals.

This article begins with an overview of twin research in Brazil, initiated by the University of São Paulo Panel of Twins. I met with many new research collaborators and students while on a fall 2023 four-city lecture tour in that country. A meeting with a world-famous surgeon who recently separated craniopagus conjoined twin pairs is also described. This overview is followed by summaries of twin research on binge eating, twins’ physical outcomes linked to different diets, working conditions and sickness absence in Swedish Twins and facial morphology differences in monozygotic twins. The final section of this article provides a sampling of human interest stories with important implications. They include a Michigan family forced to adopt their own twins, ethical issues surrounding the hiring of a surrogate to bear twins; twin survivors of the Israel-Hamas war, a twin pregnancy with a double uterus, and three twin pairs on the same women’s soccer team.

I present a theoretical framework that links different configurations of organized violence to global patterns in foreign direct investment (FDI). Insurgents, states, and rogue government agents all use violence for political purposes (i.e., incapacitating rivals), but they vary in how they use violence for economic purposes (i.e., generating income). Applying Olson’s (1993) concepts of “roving” and “stationary” banditry, I hypothesize that violence perpetrated by rebels and rogue agents indeed depresses a host country’s commercial appeal, but that violence perpetrated willfully by the state doesn’t. This claim is tested against data on FDI “entry” by several thousand multinational corporations between 1994 and 2018.

In the context of large off-shore wind farms, power production is influenced greatly by the turbine array's interaction with the atmospheric boundary layer. One of the most influencing manifestations of such complex interaction is the increased level of shear stress observed within the farm. This leads to higher momentum fluxes that affect the wind speed at the turbine locations and in the cluster wake. At the wind farm entrance, an internal boundary layer (IBL) grows due to the change in effective roughness imposed by the wind turbines, and for large enough clusters, this can reach the unperturbed boundary layer height in what is referred to as the fully developed regime. Downwind, a second IBL starts growing, while the shear stress profile decays exponentially to its unperturbed state. In the present study, we propose a simple analytical model for the vertical profile of the horizontal shear stress components in the three regions identified above. The model builds upon the top-down model of Meneveau (J. Turbul., vol. 13, 2012, N7), and assumes that the flow develops in a conventionally neutral boundary layer. The proposed parametrization is verified successfully against large-eddy simulations, demonstrating its ability to capture the vertical profile of horizontal shear stress, and its evolution both inside and downwind of the wind farm. Our findings suggest that the developed model can prove extremely useful to enhance the physical grounds on which new classes of coupled wind farm engineering models are based, leading to a better estimation of meso-scale phenomena affecting the power production of large turbine arrays.