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Brian Libgober (Northwestern Political Science) drills down on the well-known but critically important fact that the justice gap particularly afflicts communities of color. Libgober tours new research finding that African Americans face significant barriers in finding lawyers, perhaps because of anticipated decisional bias within the legal system. The result is a bracing reminder that the justice gap is rooted in much wider structures of racial inequality and a profit-oriented legal marketplace that systematically under-serves certain segments of the population. His work shows the urgency – and difficulty – of meaningful reform.
Natalie Byrom explains how the Legal Services Act 2007 (LSA 2007) aimed to reform legal services in England and Wales to enhance consumer protection and access to justice. However, its focus on professional titles and reserved activities created complexity and hindered innovation, especially for low-income individuals. Public funding cuts in 2013 worsened the situation, leading to increased self-representation and strain on the judiciary. In response, the Ministry of Justice and Senior Judiciary launched a £1.3bn digital reform in 2014 to modernize court operations. However, by 2023, only twenty-four out of forty-four projects were completed, with key initiatives like the Online Solutions Court abandoned due to delays and COVID-19 disruptions. In November 2023, a new vision proposed a public–private partnership for digital justice, leveraging technology to streamline processes and support from private sector services. This raises questions about market readiness, incentives for data sharing, and necessary regulatory adjustments to ensure fair access to justice. Addressing these challenges is crucial for improving legal service delivery and access to justice.
The purpose of this study was to confirm reduced training metrics previously associated with a ketogenic low-carbohydrate (CHO) high-fat diet (LCHF) and investigate their attenuation with caffeine supplementation. At baseline, n 21 elite race-walkers followed a high CHO availability (HCHO) diet and performed a tempo hill session (14 km with a 450 m elevation gain). Athletes were then assigned to either the HCHO or LCHF in a parallel groups design for 3 weeks, where the 14 km tempo hill session was repeated each week. On weeks 2 and 3, in a randomised crossover allocation, all participants received 3 mg/kg caffeine or placebo (gum), 20 min before the session. Race-walking speed, heart rate, ratings of perceived exertion, blood metabolites and Stroop word-colour test metrics were collected. Although LCHF athletes walked faster at baseline compared with HCHO (P = 0·049), the HCHO group improved by week 2 (P = 0·009) and week 3 (P = 0·007), whereas the LCHF group was significantly slower in Week 1 (P < 0·001) and Week 2 (P = 0·026) compared with baseline. During the 14 km hill session, within-group analysis shows that athletes walked significantly faster (P = 0·010) and at a higher percentage of vVO2max (P = 0·007) when using caffeine compared with a placebo. Between-group differences remained present, with HCHO athletes walking at a higher percentage of vVO2max than those adhering to the LCHF diet (P = 0·035). No interaction between supplement treatment and dietary group occurred (P = 0·640). Caffeine supplementation partially reversed the performance impairment associated with an LCHF diet, but training quality remained lower than the combination of caffeine and high CHO availability.
The inertial migration of hydrogel particles suspended in a Newtonian fluid flowing through a square channel is studied both experimentally and numerically. Experimental results demonstrate significant differences in the focusing positions of the deformable and rigid particles, highlighting the role of particle deformability in inertial migration. At low Reynolds numbers (${Re}$), hydrogel particles migrate towards the centre of the channel cross-section, whereas the rigid spheres exhibit negligible lateral motion. At finite ${Re}$, they focus at four points along the diagonals in the downstream cross-section, in contrast to the rigid particles which focus near the centre of the channel face at similar ${Re}$. Numerical simulations using viscous hyperelastic particles as a model for hydrogel particles reproduced the experimental results for the particle distribution with an appropriate Young’s modulus of the hyperelastic particles. Further numerical simulations over a broader range of ${Re}$ and the capillary number ($Ca$) reveal various focusing patterns of the particles in the channel cross-section. The phase transitions between them are discussed in terms of the inertial lift and the lift due to particle deformation, which would act in the direction towards lower shear. The stability of the channel centre is analysed using an asymptotic expansion approach to the migration force at low ${Re}$ and $Ca$. The theoretical analysis predicts the critical condition for the transition, which is consistent with the direct numerical simulation. These experimental, numerical and theoretical results contribute to a deeper understanding of inertial migration of deformable particles.
We conducted an interrupted time series analysis to assess changes in antibiotic sales in 37 countries that implemented National Action Plans (NAPs) between 2013 and 2018. Overall, NAP implementation was not associated with changes in antibiotic sales two years later, with country-specific effects ranging from a 38.3% decrease to 65.3% increase.
David Freeman Engstrom (Stanford) and Daniel B. Rodriguez (Northwestern) argue that current structure of American legal services regulation, known as “Our Bar Federalism,” is outdated. Fifty states maintain their own rules and regulatory apparatus for a legal profession and industry that are now national and multinational. This fragmented system is a key factor in the American civil justice system’s access-to-justice crisis, where restrictive state rules support the lawyers’ monopoly. With new legal services delivery models and AI, this scheme will seem increasingly provincial and retrograde. This chapter argues it’s time to rethink "Our Bar Federalism," and explore hybrid state-federal regulatory system.
Rotor–stator interactions in turbomachines are characterised by a complex interplay of hydrodynamic instabilities, acoustic pressure waves and receptivity mechanisms, as well as the collision of coherent structures with the blade geometry. An unsteady dual analysis of self-excited instabilities and flow interactions, exemplified by a simple model compressor stage under subsonic conditions, is proposed and presented. Using a low-dissipation sliding-plane implementation, instability-resolving nonlinear-adjoint looping simulations provide detailed sensitivity information that allows for the dissection of the full flow into sub-components linked to distinct flow phenomena. This sensitivity information further links observed flow behaviour to its hydrodynamic or acoustic origin, thereby laying the foundation for a cause-and-effect analysis and for flow control.
Brexit was a great revealer in many respects. In relation to Northern Ireland, it revealed the almost invisible role that joint EU membership had played in providing a scaffold for the peace process in the province and in resolving a postcolonial conflict with cross-border dimensions. In addition to EU political support and in facilitating good relations between Ireland and the UK, joint membership of the single market and customs union, along with the Common Travel Area between the two jurisdictions, reduced the practical and symbolic effect of the border between Ireland and Northern Ireland. It was thus the functional effects of single market law which provided the context within which a postcolonial conflict with cross-border dimensions could be managed. Brexit, particularly of the ‘hard’ variety, threatened to reintroduce this border, undermining a key element of the peace process. The Ireland/Northern Ireland Protocol or Windsor Framework is an imperfect substitute which results in an extremely complex legal landscape of multiple interacting sources of law: a form of legal pluralism or even legal entanglement.
Guided by the question of why and how the Mediterranean Sea, the bond between Europe and its African empires, became a frontier, this chapter explores the formation of two separate migration regimes in Europe. One that is liberal for white migration of the European Communities; the other that is (unevenly) closed and concerns racialized migration of the post-imperial communities. Analysing a period from the 1940s to the late 1970s, this chapter uses archival material from national and European bureaucracies to establish the formation of differentiated mobility and social security regimes by means of international and EEC/EC law. The chapter shows how this process has happened gradually. European law initially recognized the coexistence of two ‘communities’ (one European, one postcolonial), within which the rules of free movement of workers and access to social rights for foreigners from postcolonial and European communities were (formally) equal. Later, national and European bureaucracies gradually established a double standard along racial lines, which became the norm in the 1970s. In so doing, European law has contributed to closing access to the wealth accumulated in the former colonial mainland countries to the racialized populations of the former colonies.
In this paper, we provide a new property of value at risk (VaR), which is a standard risk measure that is widely used in quantitative financial risk management. We show that the subadditivity of VaR for given loss random variables holds for any confidence level if and only if those are comonotonic. This result also gives a new equivalent condition for the comonotonicity of random vectors.
To study the physics of small-scale properties of homogeneous isotropic turbulence at increasingly high Reynolds numbers, direct numerical simulation results have been obtained for forced isotropic turbulence at Taylor-scale Reynolds number $R_\lambda =2500$ on a $32\,768^3$ three-dimensional periodic domain using a GPU pseudo-spectral code on a 1.1 exaflop GPU supercomputer (Frontier). These simulations employ the multi-resolution independent simulation (MRIS) technique (Yeung & Ravikumar 2020, Phys. Rev. Fluids, vol. 5, 110517) where ensemble averaging is performed over multiple short segments initiated from velocity fields at modest resolution, and subsequently taken to higher resolution in both space and time. Reynolds numbers are increased by reducing the viscosity with the large-scale forcing parameters unchanged. Although MRIS segments at the highest resolution for each Reynolds number last for only a few Kolmogorov time scales, small-scale physics in the dissipation range is well captured – for instance, in the probability density functions and higher moments of the dissipation rate and enstrophy density, which appear to show monotonic trends persisting well beyond the Reynolds number range in prior works in the literature. Attainment of range of length and time scales consistent with classical scaling also reinforces the potential utility of the present high-resolution data for studies of short-time-scale turbulence physics at high Reynolds numbers where full-length simulations spanning many large-eddy time scales are still not accessible. A single snapshot of the $32\,768^3$ data is publicly available for further analyses via the Johns Hopkins Turbulence Database.
The study of the shape of droplets on surfaces is an important problem in the physics of fluids and has applications in multiple industries, from agrichemical spraying to microfluidic devices. Motivated by these real-world applications, computational predictions for droplet shapes on complex substrates – rough and chemically heterogeneous surfaces – are desired. Grid-based discretisations in axisymmetric coordinates form the basis of well-established numerical solution methods in this area, but when the problem is not axisymmetric, the shape of the contact line and the distribution of the contact angle around it are unknown. Recently, particle methods, such as pairwise-force smoothed particle hydrodynamics (PF-SPH), have been used to conveniently forego explicit enforcement of the contact angle. The pairwise-force model, however, is far from mature, and there is no consensus in the literature on the choice of pairwise-force profile. We propose a new pair of polynomial force profiles with a simple motivation and validate the PF-SPH model in both static and dynamic tests. We demonstrate its capabilities by computing droplet shapes on a physically structured surface, a surface with a hydrophilic stripe and a virtual wheat leaf with both micro-scale roughness and variable wettability. We anticipate that this model can be extended to dynamic scenarios, such as droplet spreading or impaction, in the future.
Multiple sclerosis (MS) is a chronic, auto-immune, neurodegenerative condition with increasing global prevalence. People living with MS (plwMS) have reported limited guidance relating to nutrition information. Paired with varied health literacy levels, this makes plwMS susceptible to nutrition misinformation.
Design:
A cross-sectional online social network analysis (SNA) examining nutrition information for MS.
Setting:
A systematic SNA using Twitter/X and YouTube platforms using NodeXL to summarise metrics. Quality was assessed using the QUEST tool. Content analysis of YouTube videos was synthesised into themes for misinformation.
Participants:
Online publicly available social media user posts and video content.
Results:
Twitter/X SNA revealed keywords used most by an account representing 72·8 % of the user network with common diet mentions including Wahls (57 times), paleo (15 times) and ketogenic (11 times). ‘Favourite count’ metrics were strongly correlated with ‘repost count’ (r = 0·83, P = 0·000). Videos which endorsed a diet were more likely to have a lower QUEST score. User engagement metrics were higher for lower quality videos. The quality of online nutrition information relating to MS was moderate (61 %). Physicians were the most likely source of nutrition information endorsing a diet for MS. The content analysis identified a knowledge gap for both medical professionals and plwMS.
Conclusions:
Nutrition misinformation for MS occurs on social media and information quality is variable. Audiences need to be cautioned about users with large followings and evaluate the credibility of all information. This study reiterates the importance of evidence-based information for the MS community.
David Engstrom and Jess Lu (both Stanford Law) first show that an otherwise fast-growing and dynamic “legal tech” industry has not generated significant “direct-to-consumer” technologies designed to help self-represented litigants navigate a complex legal system. They then interrogate that puzzle: Why is it that better consumer legal tech hasn’t flourished? They ultimately settle on the idea that rule reforms alone may not stimulate high-scale, direct-to-consumer technology. Instead, other policy interventions may be necessary, including standardizing what is currently a checkerboard of court technology and data infrastructures. Perhaps more importantly, direct-to-consumer legal tech may have trouble overcoming some of the problems that are inherent to markets that are attempting to serve individuals with episodic attachment to the civil justice system and limited ability to pay. The result is an important meditation on whether reforms to UPL, Rule 5.4, or something else entirely are necessary to unlock the potential of potent new technologies in order to narrow the justice gap.
This chapter outlines the colonial history of the CFA franc, and how to transition to a new currency, the eco, in West Africa. The CFA franc currently circulates in fourteen African countries divided into two monetary zones in West and Central Africa and this chapter starts by explaining the role currently played by the European Union institutions and the French Treasury in the currency’s governance in West Africa. The chapter goes on to discuss the different positions within the debate about how to transition to the eco and ends by outlining the most appealing roadmap for currency reform and monetary sovereignty in the West African region.