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In this study, we revisit the validity of eddy viscosity models for predicting wave-induced airflow disturbances over ocean surface waves. We first derive a turbulence curvilinear model for the phase-averaged Navier–Stokes equations, extending the work of Cao, Deng & Shen (2020 J. Fluid Mech. 901, A27), by incorporating turbulence stress terms previously neglected in the linearised viscous curvilinear model. To verify our formulation, we perform a priori tests by numerically solving the model using mean wind and turbulence stress profiles from large-eddy simulations (LES) of airflow over waves across various wave ages. Results show that including turbulence stress terms improves wave-induced airflow predictions compared with the previous viscous curvilinear model. We further show that using a standard mixing-length eddy viscosity yields inaccurate predictions at certain wave ages, as it fails to capture wave-induced turbulence, which fundamentally differs from mean shear-driven turbulence. The LES data show that accurate representations of wave-induced stresses require a complex-valued eddy viscosity. The maximum magnitude of this eddy viscosity scales as $\sim \!u_\tau \zeta _{\textit{inner}}$, where $u_\tau$ is the friction velocity and $\zeta _{\textit{inner}}$ is the inner-layer thickness, the height at which the eddy-turnover time matches the wave advection time scale. This scaling aligns with the prediction by Belcher & Hunt (1993 J. Fluid Mech. 251, 109–148). Overall, the findings demonstrate that traditional eddy viscosity models are inadequate for capturing wave-induced turbulence. More sophisticated turbulence models are essential for the accurate prediction of airflow disturbances and form drag in wind–wave interaction models.
Environmental issues are an important aspect of party competition and voters’ political preferences. Yet political behaviour research often considers environmental attitudes as a component of a broader ‘second-dimension’ and either subsumes it into this or omits it. Using data from the fifth wave of the European Values Study, we demonstrate through factor analysis that environmentalism loads as a separate dimension across Western Europe, that environmentalism has somewhat different social predictors and that it has important associations with party preference that differ from those of other second dimension issues. Our findings have crucial implications. Firstly, not accounting for environmentalism in studies of political behaviour misses an important part of the picture. Secondly, subsuming environmentalism into a broader ‘cultural’ dimension may lead to incomplete conclusions about both social predictors and the electoral consequences of political attitudes and values. Thus, allowing for a separate environmental dimension opens up novel perspectives on political representation in Western democracies.
Coalition policymaking concerns not only who decides what in which jurisdiction but also when, how speedy and in what rhythm. Due to the limited time budget and shadow of future elections, parties in charge of respective ministerial portfolios have to strategically organize their policy agendas to trade off between policy and electoral incentives in the face of coalition partners who monitor and control ministerial autonomy. However, despite the burgeoning literature on coalition governance, the temporal dimension of ministerial agenda control is less well understood. I advance this research by proposing a model to directly account for the influence of time budgets on timing decisions of ministers in policy initiation. In this model, I distinguish between different timing strategies of policy initiation a ministerial party may possibly adopt and identify in equilibrium a conditional postponing strategy by which ministers facing high scrutiny of coalition partners will postpone bill initiation till the end of the term. The empirical examination lends support to my argument and further demonstrates that the timing strategy of ministers can also be influenced by coalition conflict and policy saliency of bills.
Members of ethnic and racial minorities across North America and Europe continue to face discrimination, for instance, when applying for jobs or seeking housing. Such unequal treatment can occur because societies categorize people into groups along social, cultural, or ethnic and racial lines that seemingly rationalize differential treatment. Research suggests that it may take generations for such differences to decline, if they change at all. Here, we show that a single gesture by international soccer players at the World Cup 2018 – followed by an extensive public debate – led to a measurable and lasting decline in discrimination. Immediately after the galvanizing event, invitation rates to view apartments increased by 6 percentage points for the migrant group represented by the players, while responses to the native population did not change noticeably. We demonstrate that anti‐immigrant behaviour can disband rapidly when the public receives messages challenging the nature of ethnic and racial categories while sharing a common cause.
Women are not a demographic minority, but they certainly are a minority in politics. Most legislative bodies across the world are still overwhelmingly male. Female candidates cite lack of resources as one of the main deterrents to run. Using data on candidates encompassing twenty‐eight elections in sixteen countries between 2006 and 2017, we examine the role of electoral institutions, partisanship and candidates’ political profile in mitigating – or aggravating – the gender resource gap. We find that female candidates systematically avail of significantly lower campaign budgets. This is true across different electoral systems and on the left as well as on the right. The gap is larger in size among incumbents. It is also wider in parties that use voluntary quotas and put forward more female candidates. Moreover, the budget composition of male and female candidates varies considerably. Male candidates tend to use higher proportions of their own resources, while female candidates rely on proportionally higher party contributions, that are, however, smaller in size.
Recent research suggests that emotions are a central motivation for radical right voting. One emotion that has gained particular interest is nostalgia: Radical right politicians use nostalgic rhetoric, and feeling nostalgic is associated with radical right support. However, while nostalgia is widely and frequently experienced, previous work differentiates personal contents of nostalgia (e.g., childhood) from group‐based contents (e.g., traditions) and suggests that only the latter is related to the radical right. But why does nostalgia, and specifically its group‐based content, matter? In the present paper, I argue that nostalgia evokes implicit comparisons between the past and the present. Using relative deprivation theory, I posit that group‐based nostalgia makes people subjectively evaluate society's present as worse than its past. In turn, this temporal group‐based relative deprivation is associated with attempts to restore the past through radical right voting. Personal nostalgia, instead, does not evoke equivalent experiences of personal relative deprivation and is, therefore, unrelated to radical right support. In preregistered analyses of representative panel data from the Netherlands, I show that group‐based nostalgia is more consistently related to radical right support than personal nostalgia. In subsequent exploratory analyses, I test the relative deprivation argument and find that group‐based relative deprivation does indeed mediate the relationship between group‐based nostalgia and radical right voting: People who long for the group‐based past are more likely to feel dissatisfied with the government and, in turn, consider voting for the radical right. In studying this mechanism, I connect recent work on emotional and relative deprivation explanations to radical right voting.
A first-order Gaussian autoregressive model is considered. The exact finite-sample joint density of the minimal sufficient statistic is derived, for any value of the autoregressive parameter. This allows us to derive explicitly the exact density of the autocorrelation coefficient and its Studentized t-ratio, whose densities were available only in the asymptotic case and not for all values of the parameter and the statistic. This article also demonstrates how to solve a general problem in statistical distribution theory (well beyond the specific case of autoregressive models), that of inverting confluent characteristic functions in multiple variables.
An experimental and computational analysis of a wing tip at moderate angle of attack highlights the leading role of the wing-tip vortex wandering along the direction grazing the wing-tip corner in generating far-field noise. The cases of Reynolds numbers $ \textit{Re}_c=0.6\times 10^6$ and $1.0\times 10^6$ at angle of attack $\alpha =10^\circ$ are presented. The vorticity field shows the existence of a system of three wing-tip vortices that co-rotate to form a helical structure. The vortices have wandering motions that develop as they travel downstream. Surface pressure measurements indicate the unsteadiness in the primary vortex to be coherent at a chord-based Strouhal number $ \textit{St}_c\approx 9$. The coherence between the surface pressure fluctuations and the far-field noise is the highest at the primary vortex crossover from the tip surface to the suction surface, which also occurs at $ \textit{St}_c\approx 9$. This is supported by computational results, where the crossover position on the wing surface experiences local maxima of pressure fluctuations at $ \textit{St}_c=9$, and the dilatation shows a wavefront emanating from the vortex crossover location. Given the downstream convection of the unsteadiness along the primary vortex, the crossover is suggested to be converting the pressure fluctuations in the vortex to acoustic waves rather than being a source of a new spectral feature. The causality correlation calculated between the surface pressure and the proper orthogonal decomposition modes of the flow field identifies the vortex kinematic modes that contribute the most to the surface pressure fluctuations at the vortex crossover.
Do more rules improve overall policy performance? To answer this question, we look at rule growth in the area of environmental policy from an aggregate perspective. We argue that impactful growth in rules crucially depends on implementation capacities. If such capacities are limited, countries are at risk of ‘empty’ rule growth where they lack the ability to implement their ever‐growing stock of policies. Hence, rules are a necessary, yet not sufficient condition for achieving sectoral policy objectives. We underpin our argument with an analysis of the impact of a new, encompassing measure of environmental rule growth covering 13 countries from 1980 to 2010. These findings call for ‘sustainable statehood’ where the growth in rules should not outpace the expansion in administrative capacities.
Cyclone Alfred disrupted dialysis services across South-East Queensland. Digital tools, including real-time surveys and AI-assisted analysis, were used to evaluate impact and guide immediate improvements. This low-cost, tech-enabled response demonstrated how agile methods can support disaster resilience and inform planning for vulnerable patient groups during extreme weather events.
While a multitude of studies have investigated the link between opinion and policy, we have little knowledge of how and when organised interests affect this linkage. We argue that the alignment of organised interests affects opinion–policy congruence by influencing the weight decision‐makers attach to citizen preferences. Moreover, we propose that alignment between majorities of groups and the public matters the most when status quo bias must be overcome for the public to obtain its preferred policy. We test our theoretical claims drawing on a comprehensive media content analysis of 160 policy issues in Germany and Denmark. Our results present a more sceptical picture of the ability of groups to suppress the opinion–policy linkage than the one frequently presented in the academic literature and public debate. We find that the capacity of groups to affect whether policy is congruent with the majority of the public is restricted to situations where the public supports a change in the status quo. In these cases, policy is less likely to end up reflecting public opinion if the majority of interest groups do not support the public position. In cases where the public is supportive of the policy status quo, the position of interest groups does not affect the likelihood that policy will eventually reflect the preferred position of the public. Our findings expand existing knowledge of organised interests in the study of policy representation and have important implications for understanding democratic governance.
Recent survey research has revealed a ‘devolution paradox’: some citizens who favour stronger regional governments inconsistently desire policy uniformity across regions and state‐wide intervention in policy provision. It is argued and empirically shown that preferences for regional authority can be broken down into preferences for self‐rule – that is, for autonomy for the region – and for shared rule – that is, for collaboration between regional and national governments. Drawing upon the International Constitutional Values Survey, which includes 4,930 respondents from 142 regions in eight countries, it is also shown that preferences for self‐rule and shared rule have different impacts. Preferences for self‐rule translate into a preference for regional reform that strengthens regional autonomy, whereas preferences for shared rule drive preferences for fiscal transfers from richer to poorer regions. These results are important because they can explain why citizens who are in favour of more regional authority may support an apparently ‘paradoxical’ set of policy outcomes.
The politics of representation has become increasingly complex in recent years. Amid weakening traditional political cleavages, the emergence of new political divides and mounting anti-elitism that have helped the rise of radical populist parties, voters face significant cross-pressures when casting their ballots. Despite a wealth of studies on the role of issue preferences in voting behaviour, there are still many unknowns when it comes to understanding how voters trade off competing issue preferences against each other. Studying issue trade-offs is also important against the backdrop of the well-documented preferences of radical left and right voters for redistribution and restrictive immigration policies, respectively. To investigate the strength of issue preferences among radical left, radical right and mainstream party voters and the willingness to compromise on their most important issues, we conducted a conjoint survey experiment with 2,000 participants in France, Germany, Italy and Spain. The voting scenario in the experiment featured proposals on salient political issues and different (non)populist stances on political representation. The results from the cross-country study, as well as a large replication study with a sample of 4,000 German respondents, show that voters of radical right parties are willing to accept large trade-offs regarding their other issue preferences as long as their preference for restrictive immigration policies is fulfilled. Differently, radical left, Green and mainstream party voters have a more variegated range of issue preferences, some of them so strong that they are not traded off for their preferred redistribution and European Union integration positions, respectively. The findings shed light on trade-offs related to emerging issues such as climate change and the distinct logics behind support for radical parties. They also have implications for the electoral prospects of mainstream and radical parties when trying to reposition themselves in the diversifying issue space of contemporary democracies. As such, understanding how voters navigate issue cross-pressures helps to explain the broader dynamics that are (re)configuring political conflict and voting behaviour in Europe.
What is the association between partisanship, individual views and behaviours towards the pandemic? This research note explores this question empirically using two datasets collected before and during the Covid‐19 pandemic: a daily survey covering nearly 100,000 individuals and county level mobility matched to UK 2019 general election results. At the individual level, our findings show that partisanship is strongly correlated with differences in both views and behaviours. Conservative voters were less likely to perceive Covid‐19 as dangerous and less likely to stay home during the national lockdown. At the county level, the effect of the national lockdown on mobility was negative and statistically significant only in less Conservative counties. Thus, partisanship is associated with different individual views and behaviours towards the pandemic even when there is broad consensus among the main political parties and the government about the nature of a public health problem and the appropriate policy response.
A growing body of literature investigates whether legislators show biases in their constituency communication contingent upon constituent traits. However, we know little about whether and how findings of unequal responsiveness generalize across countries (beyond the United States) and across different traits. We address both issues using a pre‐registered comparative field experiment conducted in Germany, the United Kingdom and the Netherlands, in which fictitious citizens (varied by ethnicity, social class and partisan affiliation) inquired about legislators’ policy priorities regarding the COVID‐19 pandemic. Our pooled analysis reveals that co‐partisanship and class both increase the responsiveness of legislators while we find no effect for ethnicity. The effect sizes we find are small, but comparable to earlier studies and also noteworthy in view of our hard test design. Our exploratory analyses further corroborate the lack of discrimination against ethnic minority constituents in showing no intersectionality effects, that is, interactions between ethnic‐minority and low‐class identities. This exploratory step also addresses the country specific differences that we find. We speculate about plausible underlying party system effects that we, however, cannot substantiate due to statistical limitations. This important issue requires further attention in future research.
Custom transformations of real-world data (RWD) from electronic health record (EHR) systems are necessary to define study variables describing health and disease statuses differently among physicians in multiple specialties and basic scientists from a variety of disciplines . To increase RWD use, we hypothesized that a solution supporting three workflows – discovery, collection, and analysis – using existing rather than novel tools and requiring financial commitment from investigators would scale to meet the needs of clinical and translational research teams and ensure regulatory compliance at an academic medical center.
Materials and methods:
Weill Cornell Medicine (WCM) implemented custom research data repositories (RDRs) consisting of i2b2 for discovery, REDCap for collection, and Microsoft SQL Server for analysis. WCM subsidized the central information technology (IT) department to manage RDRs and required investigators to commit $50,000 for RDR startup and $7500 for annual maintenance.
Results:
From 2013 through 2025, WCM launched more than 17 custom RDRs for pediatrics, myeloproliferative neoplasms, obstetrics and gynecology, pulmonary and critical care, chronic kidney disease, and ophthalmology among other areas. Custom RDRs enabled academic output (e.g., publications, grants) as well as local quality improvement activities.
Discussion:
Custom RDRs facilitated delivery of fit-for-purpose data sets derived from EHR systems and other RWD sources. Over time, RDRs have evolved from an infrastructure product delivered by central IT to a data partnership between investigators and IT.
Conclusion:
Custom RDRs and data partnerships may help increase the use of RWD from EHR and other sources by clinical and translational research teams.
This study presents the results from a series of conjoint experiments evaluating how the various components of political systems affect citizens’ satisfaction with democracy (SWD). Compared to earlier studies, our approach is unique in that we were able to disentangle the effects of otherwise highly collinear variables corresponding to three defining features of any political system, namely (1) access to power, (2) the policy‐making process and (3) performance. We fielded identical conjoint experiments in countries with significant variations across the key independent variables: France, Hungary and Italy. Overall, our study supports the view that citizens are more satisfied with democracy in consensus systems than in majoritarian democracies, while it also contributes to identifying the respective weight of the specific components of political systems. Respondents across all countries recognize that proportionality and party system fragmentation magnify their voices by creating a more representative political climate. With regard to output legitimacy, we find that respondents identify good economic performance and public probity as important features of a well‐performing democracy. The positive effect of the legislators’ constituency orientation on SWD is a particularly noteworthy result that is currently understudied in the literature. Moreover, the state of the economy has by far the biggest impact on SWD, which indicates a highly materialistic view of democracy in all three countries.
Online abuse is becoming an increasingly pressing issue for democratic societies. Citizens play an important role in curtailing abuse as they often moderate online content through counter speech and by reporting abusive messages. However, we know little about when citizens actually perceive negative comments directed at politicians as being abusive, and the factors shaping these perceptions are also understudied. In this study, we therefore investigate how citizens perceive criticism, insults, threats and sexist remarks directed at politicians on social media. Based on a survey experiment with 2,000 Danish citizens, we show that citizens’ assessments of the abusiveness of such remarks are not only affected by the content of the messages, but also by political ideology, political trust and gender. Surprisingly, partisanship does not seem to substantively affect perceptions of abuse. Our study provides novel insights into what exactly citizens consider to be abusive behaviour on social media.
Family‐friendly practices in parliaments are central to the recruitment and retention of diverse representatives. Yet, instituting such reforms raises questions about public reactions, something little tested in current work. A conjoint experiment in the United Kingdom tests if the public punish MPs for taking time off their elected roles for a baby. And, importantly, asks who pays the price? Against expectations, MPs who take parental leave are not punished by the public. Voters prefer MPs who are parents, even when they take leave. Crucially, this preference is contingent upon MP sex. Women MPs who take parental leave are consistently the preferred choice over their male counterparts. When the ‘costs’ of parenthood are emphasised, women MPs receive a parenthood benefit, while men MPs do not. The findings align with the recent positive bias for women in electoral choice experiments and lend further support to implementing family‐friendly policies in politics.
Voters in rural and peripheral areas have increasingly turned away from mainstream parties and towards right‐wing populist parties. This paper tests the extent to which political decisions with adverse local effects—such as school and hospital closures—can explain this electoral shift. I theorize that political decisions such as these substantiate a perception of a disconnect between “ordinary” people and the politicians in power in day‐to‐day experiences. Using data on 315 school closures and 30 hospital closures in Denmark from 2005 to 2019 in a generalized difference‐in‐differences design, I find that mayors lose about 1.6 percentage points of the valid votes in areas where they close a school. Furthermore, I find that right‐wing populist parties increase their support in both local and national elections when a local school or hospital is closed. These findings provide insight into the electoral consequences of political decisions with adverse local effects and thus contribute to our understanding of the rise of right‐wing populism.