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Focusing on intellectual property rights (IPRs) and their role in global access to vaccines during the COVID-19 pandemic, this article argues that key aspects of the current institutional system align towards delivering individualistic state/regional/rightsholders priorities in the use of IPRs over pandemic health technologies. This played a key role in the vaccine nationalism and global vaccine inequity that emerged during the pandemic. It critically analyzes the IPR provisions within the World Health Organisation’s Pandemic Agreement and negotiation process. It argues that nationalistic/individualistic approaches toward the use of IPRs over health technologies also permeate such contexts. The final text of the Agreement leaves considerable discretion to states around IPRs, and much will depend on how it is implemented in practice. For effective future pandemic preparedness around how IPRs are used over health technologies, this article argues that a deeper bottom-up institutional change is needed — one which offers nuanced strategies to balance the potential incentivization role of IPRs with the implications certain uses of IPRs can have on access to downstream health technologies. A key element of this change is embedding a greater recognition of the range of resources provided by entities (e.g. funders, biobanks, and universities) necessary in the successful development of health technologies, including in pandemic contexts. Such entities should leverage these resources, including by attaching contractual conditions to access these, which mandate avenues for downstream access to pandemic health technologies. In the longer term such approaches could be part of a broader institutional change, which prioritises global collective health needs in pandemics.
The appointment of federal examiners under the 1965 Voting Rights Act, a novel administrative authority that Congress granted to the Justice Department to enforce voter registration of black southerners, was largely limited to jurisdictions in which the department had already pursued federal litigation under the previous Civil Rights Acts. Out of procedural concerns, the attorneys of the Department's Civil Rights Division became increasingly path-dependent in their enforcement activities as they concentrated bureaucratic resources in three of the volatile southern states. They left the remainder of the south that experienced comparable incidents of authoritarian repression and violence with little to no federal intervention. These findings are presented with geospatial illustrations to reveal the limitations in the territorial reach of federal law enforcement. I argue that the circumspection was caused by the department's continued reliance on litigation as a benchmark for establishing the existence of racial discrimination. Both the signed complaints from the local black citizens and the President's political deference to the southern Democrats in Congress had little influence on the department's decisions for appointing examiners.
Some victims of sexual violence fight back, seriously harming their abusers as a way of taking power or exacting retribution. Although violence always raises moral questions, there is nevertheless something impressive about those whose actions succeed in posing a formidable challenge to their oppression. The aim of this paper is to offer two ways of thinking about the ethical value of such non-ideal acts of resistance. First, violent resistance may allow victims to maintain ground projects that are being undermined by their abusers. Second, violent resistance may display what I call the virtue of audacious integrity—a willingness to take moral risks, that is, to act in ways that may arouse severe moral censure, in order to uphold one’s values. Both explanations illustrate that victims of sexual abuse may choose to engage in violent resistance for a variety of ethical reasons, including but not limited to paradigmatic moral considerations.
This paper theoretically introduces a new architecture for pumping leaky-dielectric fluids. For two such fluids layered in a channel, the mechanism utilises Maxwell stresses on fluid interfaces (referred to as menisci) induced by a periodic array of electrode pairs inserted between the two fluids and separated by the menisci. The electrode pairs are asymmetrically spaced and held at different potentials, generating an electric field with variation along the menisci. To induce surface charge accumulation, an electric field (and thus current flow) is also imposed in the direction normal to the menisci, using flat upper and lower electrodes, one in each fluid. The existence of both normal and tangential electric fields gives rise to Maxwell stresses on each meniscus, driving the flow in opposite directions on adjacent menisci. If the two menisci are the same length, then a vortex array is generated that results in no net flow; however, if the spacing is asymmetric, then the longer meniscus dominates, causing a net pumping in one direction. The pumping direction can be controlled by the (four) potentials of the electrodes, and the electrical properties of the two fluids. In the analysis, an asymptotic approximation is made that the interfacial electrode period is small compared to the fluid layer thicknesses, which reduces the analytical difficulty to an inner region close to the menisci. Closed-form solutions are presented for the potentials, velocity field and resulting pumping speed, for which maximum values are estimated, with reference to the electrical power required and feasibility.
We present a theoretical approach that derives the wavenumber $k^{-1}$ spectral scaling in turbulent velocity spectra using random field theory without assuming specific eddy correlation forms or Kolmogorov’s inertial-range scaling. We argue for the mechanism by Nikora (1999 Phys. Rev. Lett.83 (4), 734), modelling turbulence as a superposition of eddy clusters with eddy numbers inversely proportional to their characteristic length scale. Statistical mixing of integral scales within these clusters naturally yields the $k^{-1}$ scaling as an intermediate asymptotic regime. Building on the spectrum modelling introduced in Jetti et al. (2025b Z. Angew. Math. Physik.74 (3), 123), we develop and apply an integral formulation of the general velocity spectrum that reproduces the $k^{-1}$ regime observed in field spectra, thereby bridging theoretical derivation and empirical observations. The model is validated using wind data at a coastal site, and tidal data in a riverine environment where the –1 scaling persists beyond the surface layer logarithmic region. The results confirm the robustness of the model at various flow conditions, offering new insights into the spectral energy distribution in geophysical and engineering flows.
Partisanship and feelings about racial groups are increasingly linked among whites in the United States. Does this pattern extend to other Americans? To answer this question, we begin by examining trends in what has been termed “affective differentiation”—a measure of racial affect that is, in our case, the difference in ratings between one’s own group and white Americans—and partisanship to demonstrate first that affective differentiation has increased. Further, this measure of racial affect has a growing relationship with partisanship among Black and Latine Americans such that Democratic identification is associated with higher levels of affective differentiation. Next, using panel data from the two most recent presidential elections we find that the direction of influence flows from partisanship to affective differentiation. Higher levels of attachment to the Democratic Party are associated with greater affective differentiation in which respondents rate their own group more favorably than whites. In recent elections, there has been a stark polarization among political parties regarding the utilization of explicit racial rhetoric. Members of the electorate have taken notice, leading partisans to update their racial attitudes.
Parkinson’s disease (PD) is the fastest-growing neurological condition in the world, affecting 11·8 million people worldwide in 2021. Due to the globally expanding and ageing population, as well as growing industrialisation, this number is likely to increase. Given the absence of disease-modifying pharmacological therapies, this review aimed to examine the effect of dietary interventions on PD progression, motor symptoms, non-motor symptoms, specifically those affecting the gastrointestinal (GI) tract, and severity. To do so, this review synthesised the current evidence from randomised controlled trials (RCTs) on dietary patterns, individual foods and beverages, and nutritional supplements including nutrients, bioactive compounds, and biotics.
Results from the included RCTs failed to demonstrate conclusive evidence for the use of a dietary intervention as a therapy for improving PD progression, symptoms and severity. However, this is likely a reflection of the current scarcity of RCTs in the literature, rather than an outright demonstration of the ineffectiveness of such dietary approaches. In contrast, several trials have demonstrated a beneficial effect of biotic supplementation in managing GI symptoms, particularly constipation syndrome, which may be a promising avenue for improving GI-related issues that affect up to 80 % of PD patients. In conclusion, further RCTs are required to decipher the role that diet may play in mitigating PD progression and severity and improving overall patient care by reducing both motor and non-motor symptoms.
Based on four years of fieldwork, including 339 interviews across 21 cities, this paper provides the first-ever ethnographic account of the political economy behind the transition from traditional taxis to Didi-style ride-hailing in China. This paper makes two contributions to the literature. First, it investigates how the seemingly disadvantaged stakeholders of an old economy resisted the progress of the platform economy and why the different levels of the Chinese government, which are not subject to Western democratic accountability regimes, respond to the resistance. Second, it demonstrates the sophisticated and various approaches the Chinese government has taken in balancing the interests of the old taxi industry and the interests of the new economy. The Chinese government’s holistic approach in seeking a balance across different industries and achieving multiple goals at the same time differs from our conventional way of considering regulating online ride-hailing as an issue of compensation between the government and taxi license holders or an issue of legalization between the government and platforms such as Didi or Uber.
Understanding how law is articulated by computer means becomes crucial amid the widespread use of algorithmic decision-making systems (ADMs) in public policies. Based on a case study of the profiling algorithm deployed in labour market policies in Poland, this article contributes to the debate on computer representation of law. Using unique data concerning ADMs and their development, we address the following questions: How is the law articulated through algorithms? Who produces, and how, what kinds of discrepancies between the law and ADMs? Our analysis revealed discrepancies that were indicative of political decision-making that go far beyond adaptations of law to the requirements of ADMs. Furthermore, contrary to what the literature suggests, these discrepancies were a product of backstage decision-making by traditional policy-makers – executive and public administration – rather than system-level bureaucrats. Thus, we argue for the need to incorporate the political dimension more systematically into the analysis of computer articulation of law.
This article analyzes the evolution of banking supervision in Spain under Franco’s regime (1939–1975), highlighting how political and economic factors shaped oversight in an authoritarian setting. Two phases emerge. In the 1940s–50s, supervision—lodged in the Ministry of Finance—was weak, poorly staffed, and focused on enforcing banks’ oligopolistic interest rate agreements, reflecting regulatory capture. Following the 1959 Stabilization Plan, rising external pressure, domestic concerns about oligopolistic practices, and the 1962 Banking Law prompted reform. Supervision shifted to the Bank of Spain with the establishment of the Private Banking Inspection Service, resulting in more frequent inspections and gradual formalization of supervision. Archival records indicate that by the 1970s, inspections had become more frequent and rigorous, signaling a cautious shift toward risk-based oversight. However, the reforms remained incomplete. Persistent systemic vulnerabilities culminated in the severe banking crisis of 1977–1982, underlining the limitations of supervisory transformation under authoritarian rule.
Interactions between hyperelastic bio-membranes and fluid play a crucial role in the flight (or swimming) motion of many creatures, such as bats, flying squirrels and lemurs. Bio-membranes are characterised by high stretchability and micro-bending stiffness, leading to unique fluid–solid coupling properties (Mathai et al., 2023, Phys. Rev. Lett., vol. 131, 114003). This study presents a high-fidelity numerical exploration of the hyperelastic characteristics of a pitching foil inspired by bio-membranes in fluid within a low Reynolds number regime. The focus is on the effect of foil compliance on its self-propulsion performance, mimicking natural propulsion mechanisms, with the foil free to move in the horizontal direction. We find that with certain compliance, the foil may experience a velocity crisis, meaning that its propulsive capability is completely lost. This phenomenon is caused by the loss of beat speed when the foil’s passive deformation is out of phase with the pitching motion. By contrast, the two motions can be in phase at proper compliance, leading to an increased beat speed. This will significantly enhance propulsive velocity up to $33\,\%$ compared with the rigid case. The results demonstrate the feasibility of compliance tuning to circumvent the velocity crisis and improve the propulsive speed, which are helpful in the design of micro aerial robots using biomimetic membranes.
Xandarellida is a clade of artiopodan euarthropods known exclusively from the early Cambrian (Series 2, Stage 3) Chengjiang biota of South China, apart from the possible inclusion of Phytophilaspis Ivantsov, 1999 from the early Cambrian Sinsk Biota of Siberia. A rare euarthropod taxon represented by four specimens from the Emu Bay Shale (Cambrian Series 2, Stage 4) of Kangaroo Island, South Australia, represents the first record of Xandarellida from East Gondwana. A new monotypic genus, Austroxandarella n. gen., is based on A.poikar n. sp., being most readily distinguished by its elongate pygidium. Close affinities to Xandarella Hou et al., 1991 are suggested by a thorax of 10 tergites, with progressive elongation of the posterior three tergites relative to the seven anterior tergites of subequal length—this elongation representing the dorsoventral decoupling of biramous appendage pairs and tergites shared by all xandarellids. Discovery of an Australian xandarellid adds more support for biogeographic affinities between East Gondwana and South China in the early Cambrian.
One challenge to relationism in general relativity is that the metric field is underdetermined by the stress-energy tensor. This is manifested in the existence of distinct vacuum solutions to Einstein’s equations. In this paper, I reformulate the problem of underdetermination as a problem from vacuum solutions. I call this the vacuum challenge and identify the gravitational degrees of freedom (associated with the Weyl tensor) as the “source” of the challenge. The Weyl tensor allows for gravitational effects that something outside of a system exerts on the system. I provide a relationist response to the vacuum challenge.