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This paper assesses the change over time of within-family inequality in the educational outcomes of Spaniards by measuring the effects of birth order on the number of years of formal education attained in families of different sizes. The analysis is based on data from the 1991 Sociodemographic Survey, adopts the perspective of cohort analysis, and looks at those born in the first six decades of the 20th century. The data reveal that the effects of both the number of siblings and, above all, birth order increased over the cohorts. This means that educational inequalities within Spanish families tended to grow in contrast to inequalities between families in a period of great expansion of the education system. Although the Spanish experience may have differed from that of other developed countries, it fits well within the theoretical framework of conditional dilution of parental resources associated with the number of siblings and birth order.
Since the 1950s, Catalonia has remained one of Europe’s most popular tourism destinations. Throughout this period, however, Catalonia’s presentation to the world has changed dramatically. In this article, I explore claims to authenticity in Catalan tourism attractions and promotion, which emerged as shrewd marketing language in the increasingly competitive tourism market of the 1980s and 1990s. The resulting Catalanisation of the region conditioned the international projection and reception of the region as historically, linguistically, culturally, and politically different from Spain and, indeed, the rest of the world. This new image of the region relied on and sustained an ontology of marketable and consumable national difference that resonates far beyond Catalonia’s borders. This research shows how ideas of consumable authenticity functioned as an important mediator between nationalism and globalisation, popularised nationalist thinking without the influence of committed nationalist actors, and helped scholars to understand the sustained importance of the nation-state as a unit of international politics despite its shifting meaning, function, and power from the 1970s to today.
To assess the time scales and relative importance of temporal decoupling between hillslope erosion and the introduction of sediment to streams in a Yangtze River headwater basin, we used multiple techniques to date sediments in alluvial fans and terraces in a third-order stream valley draining a 30-km2 catchment in SW Sichuan, China. Poorly sorted angular sediments in tributary-junction alluvial fans ranged in age from 11261 BCE to 1844 CE, and predominantly fine-grained overbank sediments in alluvial terraces date to approximately 1700–1950. Ethnographic observations and field mapping of hillslope soil depths indicate that terrace sediments and upper strata of several fans correspond to a period of hillslope erosion associated with the intensification of hillslope swidden agriculture. Contemporary sediment production is dominated by lateral fluvial erosion of valley-bottom landforms rather than by hillslope erosion. The long-term temporal decoupling by valley storage of hillslope erosion from sediment delivery to streams has relevance to contemporary hillslope erosion and sedimentation control efforts in the Yangtze Basin. It also motivates investigating whether valley-filling anthropogenic “legacy sediments” may play a role in decoupling hillslope erosion from sediment production in other Yangtze Basin headwater basins.
This study tested whether native Chinese (L1) readers whose second language (L2) was English could activate L2 translations of L1 words during L1 sentence reading. Chinese–English bilinguals read Chinese sentences silently, each containing a target word whose parafoveal preview was manipulated. To test cross-language semantic activation, each target word was paired with an identical, an unrelated and a translation-related preview that shared an L2 translation (e.g., 政黨, party as a political group) with the target word (e.g., 派對, party as a social gathering). Compared to the unrelated previews, the translation-related previews induced shorter target-word viewing times, despite no phonological/orthographic overlap. Furthermore, the highly proficient L2 readers showed earlier priming effects than did the average readers. Our results suggest that bilinguals activate lexical representations in both languages automatically and non-selectively, even when the task requires activation of one language only, and that the L2 lexical activation is modulated by L2 proficiency.
We use direct numerical simulations to examine the onset of stratified turbulence triggered by the zigzag instability recently identified in columnar Taylor–Green vortices (Guo etal. 2024, J. Fluid Mech., vol. 997, A34) and its role in layer formation within the flow. The study focuses on Froude numbers $0.125 \leqslant \textit{Fr} \leqslant 2.0$ and Reynolds numbers ${\textit{Re}}$ ranging from 800 to 3200. The breakdown of the freely evolving vortex array is driven by local density overturns, combining shear and convective mechanisms initiated by the primary zigzag instability. Our results show a linear relationship between the peak buoyancy Reynolds number ${{\textit{Re}}}_b^{\star }$, driven by the zigzag instability, and ${\textit{Re}}\, {\textit{Fr}}^2$. When the flow does not exhibit local shear or convective instability, the value of ${{\textit{Re}}}_b^{\star }$ falls below unity. Both density and momentum layers arise from the zigzag instability: horizontal velocity layers are strong and persistent, while density layers are weaker and more transient. The vertical scale of the mean shear layers increases with ${\textit{Fr}}$ for ${\textit{Fr}} \leqslant 1$, shows weak dependence on ${\textit{Re}}$, and agrees well with the length scale associated with the fastest-growing linear mode of the zigzag instability. Further analysis in the sorted buoyancy coordinate highlights the role of density overturns caused by the zigzag instability in forming buoyancy layers during the transition to turbulence.
The history of work is marred by the fact that the meaning of “labour” or “work” changed with the arrival of modern society, making it difficult to draw comparisons across time. There has been a shift from understanding work as any activity that may secure continued living and well-being, to seeing it as paid, full-time, specialized employment. This transformation has obscured the work of some groups in society (notably women but also others) and work in the form of multiple employments (which often means multiple labour relations). The methods and sources presented in this Special Theme offer valuable tools for historians seeking to address and navigate these issues.
Many countries globally have adopted national policy commitments to address violence against women (VAW). Yet the implementation of these policies largely relies on subnational governments’ actions. Why do some but not all subnational governments adopt policies to implement VAW response services? Surprisingly, few studies have addressed this question. Drawing on norm diffusion and gender policy reform theories, we assess the factors driving the adoption of these local policies in Indonesia. Since Indonesia adopted its domestic violence law in 2004, only one-third of cities/regencies have adopted local regulations (peraturan daerah) on VAW response services. Using event history analysis, we analyzed data from 509 cities/regencies from 2004 to 2022. Our findings show that the presence of local non-governmental organizations (NGOs) connected to national and transnational VAW advocacy networks, and women’s local legislative representation are significant factors. However, province-level morality regulations constrain the progressive effects of the VAW advocacy networks and women’s political presence.
We solve generalizations of Hubbard’s twisted rabbit problem for analogs of the rabbit polynomial of degree $d\geq 2$. The twisted rabbit problem asks: when a certain quadratic polynomial, called the Douady rabbit polynomial, is twisted by a cyclic subgroup of a mapping class group, to which polynomial is the resulting map equivalent (as a function of the power of the generator)? The solution to the original quadratic twisted rabbit problem, given by Bartholdi and Nekrashevych, depended on the 4-adic expansion of the power of the mapping class by which we twist. In this paper, we provide a solution to a degree-d generalization that depends on the $d^2$-adic expansion of the power of the mapping class element by which we twist.
The obesogenic maternal environment can lead to cardiac hypertrophy in the offspring. The aim of this study was to investigate whether (-)-epicatechin (Epi) modify the expression of genes related to pathological cardiac hypertrophy (CH), and its physiological pathway, in offspring obese by programing. Four groups of eight male offspring Wistar rats of 110 days were randomly selected to control groups [C and offspring of maternal obesity (MO)] or to Epi groups (C + Epi or MO + Epi). In heart tissue, we evaluated the size of the ventricular walls and cavities, presence of fibrosis, mRNA and protein of Myh6, Myh7, Anp, Bnp, Acta 1, Col1a1, Akt, and Mtor. We observed an increase of the heart weight/body ratio in groups treated with Epi. Only in MO group, heart area and its perimeter were increased, as well as Myh7 and Anp mRNA. We found a significant decrease of fibrosis area in male offspring treatment with Epi. In Epi group Anp mRNA was decreased whilst Anp protein in MO group was increased; further, a decrease in Col1a1 protein was found in MO group. In conclusion, the maternal obesity activates pathological CH markers reactivating fetal cardiac genes involved in histological changes observed in cardiac tissue. Epi treatment decreased the content of collagen area and expression of some fetal cardiac genes participating in this pathway in offspring of maternal obesity.
Globally, prejudicial attitudes toward women persist. By taking anti-discriminatory stances, value-oriented organizations – e.g., political parties and religious denominations – can tap into group identities to shape their members’ attitudes. We know much less about the role of organizations that are not inherently value-oriented – such as sports teams – in accomplishing the same. Yet, as various campaigns by sports teams worldwide indicate, this is precisely what non-value-oriented organizations increasingly attempt to do. Can football team fandom be leveraged to promote gender-egalitarian attitudes? We address this question with data from a national survey in Brazil and a survey experiment conducted in partnership with a major Brazilian football club. We find that while football team identity is salient and may be leveraged to change displayed social attitudes, the Club’s anti-sexism campaign inadvertently increased men’s expressed prejudice toward women in football – although it may have also improved institutional trust among women.
Previous research has shown that motor information influences visual and semantic tasks. However, not much is known about the specific influence of structural, action-relevant information on language processing. In the current study, participants were instructed to observe a prime graspable object (e.g., a frying pan) that could be presented with the action-relevant component (that is its handle) oriented either toward the left or toward the right. Subsequently, they performed a property verification task on a following target word, which could describe an action-relevant (e.g., handle) or action-irrelevant (e.g., ceramic) characteristic of the just-encountered object. They were required to make a keypress response with either a key on the same side as the depicted action-relevant component of the prime object (that is compatible key) or on the opposite side (that is incompatible key). Results show that property verification judgements for action-relevant words were faster in the spatially compatible condition than in the spatially incompatible condition, whereas judgements for action-irrelevant target words were not affected by spatial compatibility. These findings suggest that spatialized object properties are not mandatorily linked to manual response biases. Rather, this link seems to be modulated by trial-by-trial changes in conceptual focus.
Research on extremism has increasingly incorporated a gender perspective, revealing how the politics of extremism and gender fuel one another. Yet most evidence of the gendered politics of extremism is on far-right and Islamist non-state actors, neglecting other forms, including state-sanctioned extremism in which the state is complicit with the violent effects of extremism. This article investigates a type of state-sanctioned extremism, wherein nationalist movements, supported to varying degrees by governments, seek to “protect” Buddhism across Asia. Gendered motives, forms, and impacts of political extremism can be observed in Buddhist Protectionism movements, manifesting in societal conflict, hate speech and other acts of violence and intolerance against ethnic and religious minorities. We ask to what extent gender norms and structures affect the motives, forms, and impact of Buddhist extremism using an original dataset encompassing nationally representative surveys and qualitative research in selected communities in Thailand, Sri Lanka, and Myanmar. We find that extremist discourses and practices exist on a Buddhist Femonationalist Continuum across the three cases with misogyny and anti-Muslim threat narratives played up, both affirming the power of masculine hegemony and justifying the use of violence to control minority populations and women.
Expert institutions are increasingly expected not only to provide the best professional expertise but also to ensure equal presence of women. Yet while descriptive gender representation in bureaucracies and courts is extensively researched, we largely lack studies of women’s presence on expert advisory bodies. Drawing on large-n data on the composition of Norwegian expert advisory commissions, the paper investigates and evaluates how the share of women on these commissions has developed over the last half-century. It finds that while overall gender parity was achieved in recent decades, women remain strongly under-represented among commission chairs, particularly academic chairs, and among academic members from the powerful economics discipline. Normatively speaking, the developments toward parity are promising, and we find no empirical indication that proportional representation and competence requirements are in tension. On the contrary, persistent gender gaps among economists on commissions and academic chairs may endanger adequate provision of expertise into policy-making.
Optimal transitional mechanisms are analysed for an incompressible shear layer developing over a short, pressure gradient-induced laminar separation bubble (LSB) with peak reversed flow of 2 %. Although the bubble remains globally stable, the shear layer destabilises due to the amplification of external time- and spanwise-periodic disturbances. Using linear resolvent analysis, we demonstrate that the pressure gradient modifies boundary layer receptivity, shifting from Tollmien–Schlichting (T-S) waves and streaks in a zero-pressure-gradient environment to Kelvin–Helmholtz (K-H) and centrifugal instabilities in the presence of the LSB. To characterise the nonlinear evolution of these disturbances, we employ the harmonic-balanced Navier–Stokes (N-S) framework, solving the N-S equations in spectral space with a finite number of Fourier harmonics. Additionally, adjoint optimisation is incorporated to identify forcing disturbances that maximise the mean skin friction drag, conveniently chosen as the cost function for the optimisation problem since it is commonly observed to increase in the transitional stage. Compared with attached boundary layers, this transition scenario exhibits both similarities and differences. While oblique T-S instability is replaced by oblique K-H instability, both induce streamwise rotational forcing through the quadratic nonlinearity of the N-S equations. However, in separated boundary layers, centrifugal instability first generates strong streamwise vortices due to multiple centrifugal resolvent modes, which then develop into streaks via lift-up. Finally, we show that the progressive distortion and disintegration of K-H rollers, driven by streamwise vortices, lead to the breakdown of large coherent structures.
Historians of empire have long been interested in how interpersonal relationships between coloniser and colonised did or did not conform to imperial ideologies. Yet, the relationships that developed between European and Indian officers in the East India Company’s armies remain underexplored. This is an important omission, because the armies employed thousands of people and represented a significant point of cross-cultural contact, while also being governed by a distinct set of rules and conventions. This article uses the variety of materials generated by a controversy in the Fifth Light Cavalry, Madras Army to understand the nature and limits of what contemporaries called friendships. Both interested parties and neutral onlookers testified to the existence of friendships and factions that bridged race and rank. Indian officers sought the goodwill of their superiors to ensure their professional security, while British officers looked to Indian allies for information and legitimacy. Although existing scholarship has often assumed that British and Indian officers led largely separate lives, the scandal in the Fifth Light Cavalry demonstrates instead that British and Indian officers could, and did, form parties defined by shared objectives. When disputes broke out between rival British officers, however, Indian allies risked becoming collateral damage, while British officers who sided with Indian friends were punished for violating social codes. Through this controversy, we see how and why hierarchies of race and rank were contested, as well as the mechanisms whereby they were ultimately preserved intact.
Language-switching sometimes causes delayed responses, especially when switching from the later-acquired languages (here, L2) to the dominant native language (L1). It is well-established that language proficiency plays a role in production, but what about language context (i.e., the ratio of L1 and L2)? We investigated language context within two language production processes: “top-down” (naming pictures) and “bottom-up” (reading words aloud). We suggest that switch cost asymmetry was not only affected by language context, but also by production modality. In picture naming, the degree of inhibition relies largely on the activation level of the predominant language in the language context, whereby affects the asymmetry. However, the asymmetry disappears when language processing only requires reading aloud words with orthographically unique and constrained to one language. We provide evidence with dynamics of inhibition in different language contexts, suggesting that future study should continue to explore the flexibility of production processes in bilingual speakers.
This paper examines the history of the ‘lower cavity’ of the gastrointestinal tract, a distinctive anatomical feature in Greco-Roman medicine that described a second stomach-like organ in the large intestine. It traces how a bipartite model of the digestive system emerged in fourth-century bce Greek medical and philosophical thought and persisted in the works of influential figures such as Galen, Vesalius, and Glisson, despite shifts in terminology, anatomical observations, and physiological theories. The study demonstrates that this understanding arose primarily from three complementary factors: a specific terminology that paired the stomach with a lower cavity, systematic animal dissections that revealed pronounced caeca in certain species, and emerging physiological theories that required separate bodily receptacles for digested food and residues. Through this case study, the paper illuminates how premodern anatomical knowledge was articulated by a constant negotiation between animal bodies, human bodies, and past textual authorities, facilitating the surprising longevity of ideas like the ‘lower cavity’ in the gastrointestinal tract.
The evolution of settling fine particle clouds in transition or rarefied flow regimes is a fundamental yet insufficiently understood problem in fluid mechanics. Here, we address this challenge numerically using a kinematic model, and approximate the hydrodynamic interaction between particles by superposing velocity disturbances from rarefied gas flows past individual particles. The effect of electrostatic interactions among charged particles is also studied. As an application, we simulate the sedimentation of small dust clouds under Martian conditions, focusing on the 10$\,\unicode{x03BC}$m diameter fraction of ‘settled dust’. Our results show that under Martian conditions, dust clouds develop elongated tails during sedimentation, with up to 25 % of particles leaking from the bulk over a 10 minute period. Unlike Earth-based scenarios, the clouds do not break apart owing to the weaker hydrodynamic interactions in Mars’ thin atmosphere. By examining the interplay between hydrodynamic and electrostatic interactions, which influence particle leakage in opposite ways, we demonstrate that larger dust clouds are also likely to evolve with sustained tail formation. Fully suppressing particle leakage would require particle charges well above $10^4e$, levels unlikely to occur under typical Martian conditions. New analytical expressions are derived for the cloud settling velocity and tail evolution, providing theoretical insights and a foundation for future studies on particle dynamics in transition/rarefied environments.