We use cookies to distinguish you from other users and to provide you with a better experience on our websites. Close this message to accept cookies or find out how to manage your cookie settings.
To save content items to your account,
please confirm that you agree to abide by our usage policies.
If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account.
Find out more about saving content to .
To save content items to your Kindle, first ensure [email protected]
is added to your Approved Personal Document E-mail List under your Personal Document Settings
on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part
of your Kindle email address below.
Find out more about saving to your Kindle.
Note you can select to save to either the @free.kindle.com or @kindle.com variations.
‘@free.kindle.com’ emails are free but can only be saved to your device when it is connected to wi-fi.
‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.
The flow behind impulsively started circular and polygonal plates is investigated experimentally, using particle image velocimetry at several azimuthal angles. Observing plates accelerating up to a steady Reynolds number $Re=27\,000$, the three invariants of the motion, circulation $\Gamma$, hydrodynamic impulse $I$ and kinetic energy $E$, were scaled against four candidate lengths: the hydraulic diameter, perimeter, circumscribed diameter and the square root of the area. Of these, the square root of the area was found to best collapse all the data. Investigating the three-dimensionality of the flow, it is found that, while a single-plane measurement can provide a reasonable approximation for $\Gamma$ behind plates, multiple planes are necessary to accurately estimate $E$ and $I$.
This chapter presents the complicated amendment rules in Italy and Chile and calculates their constitutional cores. In both countries, the constitutional amendments failed because of the size of these cores. In Italy, the rejection was by referendum; in Chile, the next step was the design of a new constitution which needed to be approved by a referendum (procedure followed and failed twice). The analysis of these referendums as well as the cases of failed referendums in the EU provide the basis for an explanation of failures of referendums as well as a proposal of a procedure to reduce the probability of these failures based on improvement of information to the public.
The developmental states of Asia—South Korea, Taiwan, and Singapore—have been widely recognized for their successful COVID-19 governance. However, despite these successes, a closer examination reveals significant differences in their strategic responses and the medical resources mobilized. This article explains the different governance approaches taken by the three developmental states. We argue that the pre-crisis industrial coordination capacity of each developmental state plays a crucial role in determining both whether and which medical resources can be mobilized during emergencies. Through comparative case studies and within-case process tracing, we demonstrate how pre-established industry-level coordination capacities enabled Korea, Taiwan, and Singapore to strategically prioritize the production and mobilization of test kits, masks, and vaccines, respectively, especially in the initial phase of the pandemic. This article emphasizes that a country’s domestic production capacity, an often-overlooked institutional factor, can facilitate a more efficient response in a short period of time and significantly strengthen crisis management efforts.
From particle lifting in atmospheric boundary layers to dust ingestion in jet engines, the transport and deposition of inertial particles in wall-bounded turbulent flows are prevalent in both nature and industry. Due to triboelectrification during collisions, solid particles often acquire significant charges. However, the impacts of the resulting electrostatic interaction on the particle dynamics remain less understood. In this study, we present four-way coupled simulations to investigate the deposition of charged particles onto a grounded metal substrate through a fully developed turbulent boundary layer. Our numerical method tracks the dynamics of individual particles under the influence of turbulence, electrostatic forces and collisions. We first report a more pronounced near-wall accumulation and an increased wall-normal particle velocity due to particle charging. In addition, contrary to predictions from the classic Eulerian model, the wall-normal transport rate of inertial particles is significantly enhanced by electrostatic forces. A statistical approach is then applied to quantify the contributions from turbophoresis, biased sampling and electrostatic forces. For charged particles, a sharper gradient in wall-normal particle fluctuation velocity is observed, which substantially enhances turbophoresis and serves as the primary driving force of near-wall particle accumulation. Furthermore, charged particles are found to sample upward-moving fluids less frequently than neutral particles, thereby weakening the biased-sampling effect that typically pushes particles away from the wall. Finally, the wall-normal electric field is shown to depend on the competition between particle–wall and particle–particle electrostatic interactions, which helps to identify the dominant electrostatic force across a wide range of scenarios.
Speaking after the addition of The Forth Bridge on UNESCO’s World Heritage List (WHL), a Scottish minister described it as an ‘honour that shows this is a great industrial treasure not just to the city, to Scotland or the United Kingdom, but the entire world.’ A few years later, the delegation of Indonesia took the floor after the inscription of Ombilin Coal mines. Dubbed Indonesia’s first industrial world heritage site, the mines had been owned by the Dutch East Indies government. Thus, the delegation had to describe the industrial heritage as a colonial imposition before noting that the area became ‘modern and integrated.’ If both Scotland and Indonesia received international recognition as modern, industrial subjects, they got there differently. In apprehending that difference, this article extends social-structural theories of international recognition. Approaching these structures as providing uneven recognition possibilities, I develop three modes of recognition pursuits that mediate the challenges of such uneven terrain. I probe the traction of these modes by analyzing speeches state delegations deliver after placing their sites on the WHL. This framework and analysis extend our understanding of international recognition pursuits by pointing to the hold of symbolic structures, and their transformation under creative state engagements.
Delaying the laminar–turbulent transition of a boundary layer reduces the skin-friction drag and can thereby increase the efficiency of any aerodynamic device. A passive control strategy that has reaped success in transition delay is the introduction of boundary layer streaks. Surface-mounted vortex generators have been found to feature an unstable region right behind the devices, which can be fatal in flow control if transition is triggered, leading to an increase in drag with respect to the reference case without devices. In a previous proof of concept study, numerical simulations were employed to place artificial vortices in the free stream that interact with the boundary layer and accomplish transition delay. In the current study, we present experimental results showing the feasibility of generating free-stream vortices that interact with the boundary layer, creating high- and low-speed boundary layer streaks. This type of streaky base flow can act as stabilizing if introduced properly. We confirm the success of our flow control approach by artificially introducing two-dimensional disturbances that are strongly attenuated in the presence of streaks, leading to a transition delay with respect to the reference case of approximately 40 %.
Using the veto players approach to measure constitutional rigidity, this chapter uses the rigidity index calculated in Chapter 2 for all 103 democracies (countries above five in the Polity scale). Given that the lack of constitutional rigidity is a necessary but not sufficient condition for frequent and/or significant constitutional amendments in democratic countries, the appropriate estimation model is that of heteroskedastic regression. I create a new dataset on the significance of constitutional amendments and estimate the model which corroborates the theoretical expectations and demonstrates that more significant amendments lead to a better fit. Robustness of the results is examined with all possible cutoff points for democracies in the Polity scale. The model is also tested against one of the cultural theories introduced in Chapter 3.
Constitutions are important because they set the rules of the political game. As a result, they determine the relevant players, their strategies, and their payoffs. Amendments emerge when the constitutional rules prevent a wide variety of actors (determined by the amendment rules of the constitution) from achieving their goals. This institutional approach in democratic countries (where the rule of law prevails) contradicts arguments that it is culture or nonwritten rules (constitutional moments) that regulates the emergence of amendments or that judicial interpretations supersede constitutional amendments (unconstitutional constitutional amendments).
Electronic medical record (EMR) systems in primary care present an opportunity to address frailty, a significant health concern for older adults. Researchers in the UK used Read codes to develop a 36-factor electronic frailty index (eFI), which produces frailty scores for patients in primary care settings.
Aim:
We aimed to translate the 36-factor eFI to a Canadian context.
Methods:
We used manual and automatic mapping to develop a coding set based on standardized terminologies used in Canada to reflect the 36 factors of the eFI. Manual mapping was completed independently by two coders, followed by group consensus among the research team. Automatic mapping was completed using Apelon TermWorks. We then used EMR data from the British Columbia Canadian Primary Care Sentinel Surveillance Network. We searched structured data fields related to diagnoses and reasons for patient visits to develop a list of free text terms associated with any of the 36 factors.
Results and conclusions:
A total of 3768 terms were identified; 3021 were codes. A total of 747 free text terms were identified from 527,521 reviewed data entries. Of the 36 frailty factors, 24 were captured mostly by codes; 7 mostly by free text; and 4 approximately equally by codes and free text. Three key findings emerged from this study: (1) It is difficult to capture frailty using only standardized terminologies currently used in Canada and a combination of standardized codes and free text terms better captures the complexity of frailty; (2) EMRs in primary care can be better optimized; (3) Output from this study allows for the development of a frailty screening algorithm that could be implemented in primary care settings to improve individual and system level outcomes related to frailty.
A decades-long debate has sought to determine whether judicial elections are detrimental to the impartiality of judges and public support for state court systems. We contribute to that discussion by assessing whether elections work to hold errant judges accountable. We use a novel dataset of judicial scandal, including newspaper reports of misconduct against elected state supreme court justices. Our data examines the effect of scandal from 2000–2023 to determine whether controversy affects voter support for incumbents. We find voters pay attention to the harmful effects of scandal on judiciaries and that impacted incumbents experience diminished support, relative to other incumbents.
China is well known for providing official data, but how to treat these data is a longstanding debate among China scholars. This paper advances understandings of how to interpret Chinese official statistics about the internet. Using standards for evaluating surveys in the social sciences, we systematically compare official data from the China Network Information Center (CNNIC), which is under the supervision of China’s main regulator of internet policy, with the China Internet Survey 2018 (CIS), which is, to our knowledge, the first nationally representative survey on internet use in China. Using three examples, we illustrate how methodological differences in sampling design and measurement can lead to vastly different conclusions about key indicators of internet use in mainland China, including the percentage of internet users, their regional and urban–rural digital divide, and the percentage of specific social media platforms. We discuss the challenges of survey work on internet use in China and offer recommendations on how to interpret official statistics, especially in light of the limitations researchers face when conducting face-to-face surveys in China.
This chapter presents three different kinds of constitutional culture theories that deal with constitutional amendments, most of them being alternatives to the institutional accounts of this book. The first uses amendments as a random element (the constitutional text is in fact interpreted in more or less restrictive ways). The second uses previous amendment frequency as a proxy for constitutional culture and argues that the current amendment frequency depends on this culture and not on the amendment provisions. The third uses cultural indicators measured in each country as independent variables. I argue that each one of these theories lacks theoretical justification and that some of their arguments cannot survive statistical scrutiny, and I explain why they are insufficient in comparative terms.
This article examines the evolution of the role played by the number and gender of siblings in the survival and biological well-being of individuals in rural Spain during the twentieth century. Our aim is to test how two fundamental theories – the cooperative breeding hypotheis and the resource dilution hypothesis – about how the number of siblings affect the individual come together in this area of study during a period of economic, health, and social transformation. We used a sample of 19,331 individuals born between 1900 and 1979 from 14 rural villages, for whom data on sibling count and various family and environmental variables are available. Using these data, we ran several statistical models to discover the effects of siblings on survival. In addition, we studied the long-term effect of siblings on height using height data from 2,783 male conscripts. Our results show that the number of siblings positively influenced survival, either through the cooperation of older siblings in the care of their younger brothers and sisters or through parents exhibiting higher offspring survival abilities. However, increased reproductive success may come with a disadvantage. The biological well-being, as measured by height, of male conscripts was significantly lower among individuals with more siblings in the early decades of the study. Conversely, in the later decades, the negative relationship between sibship size and height was not statistically significant when the number of living siblings was fewer than five.
In recent times, several international courts (ICs) have faced resistance from their member states. A recurring narrative used to justify states’ backlash against ICs has been that ICs are increasingly overreaching and essentially interfering with states’ sovereignty. This article explores what backlash over sovereignty actually entails, highlighting a diverse set of political agendas and strategies. The article first develops an analytical matrix of three forms of sovereignty politics – by design, as a shield and as reprisal – to capture different aspects of sovereignty politics. This framework is then used in an empirical analysis of four African states that, within a four-year time-period, all withdrew their declarations granting direct access to the African Court on Human and Peoples’ Rights (Court) for NGOs and individuals from those states. In all cases, sovereignty was claimed as the reason for withdrawal but as we demonstrate, the cases vary. Overall, we find that resistance against the African Court does not necessarily emerge from a challenge to a principled concept of sovereignty, but from sitting governments’ narratives of what human rights ought to be, who ought to invoke them, and when. In other words, sovereignty arguments work mainly to safeguard member states from the authority of the African Court where state practices collide with international commitments to human rights. This takes on a distinct rhetorical framing that utilizes and evokes a set of different meanings of sovereignty, for example that the Court is outside its delegated competences or the issue is inside a vague notion of internal affairs. By using these legal-rhetorical strategies, member states seek to avoid having to address directly the challenges being brought against them at the IC.
This paper examines so-called active participles in three languages with different morphological systems (Bosnian/Croatian/Serbian, English and Hebrew). Based on a range of morphological, syntactic and interpretational diagnostics, I argue that these elements are uniformly deverbal adjectives. This result challenges a substantial body of work claiming that active participles show an adjectival/verbal ambiguity, but it is in line with Bešlin (2023), which analyzes passive participles as deverbal adjectives. Importantly, deverbal adjectives may denote predicates of properties or predicates of eventualities (events or states), depending on the characteristics of the verbal structure they embed. If these conclusions generalize to other languages, then there is no need to assume that (verbal) participles constitute a separate grammatical category, which is a desirable theoretical outcome. The results presented in this paper argue for an architecture of the grammar in which there is no one-to-one mapping between an item’s syntactic category and its meaning.
There is considerable comorbidity between externalizing (EXT) and internalizing (INT) psychopathology. Understanding the shared genetic underpinnings of these spectra is crucial for advancing knowledge of their biological bases and informing empirical models like the Research Domain Criteria (RDoC) and Hierarchical Taxonomy of Psychopathology (HiTOP).
Methods
We applied genomic structural equation modeling to summary statistics from 16 EXT and INT traits in individuals genetically similar to European reference panels (EUR-like; n = 16,400 to 1,074,629). Traits included clinical (e.g. major depressive disorder, alcohol use disorder) and subclinical measures (e.g. risk tolerance, irritability). We tested five confirmatory factor models to identify the best fitting and most parsimonious genetic architecture and then conducted multivariate genome-wide association studies (GWAS) of the resulting latent factors.
Results
A two-factor correlated model, representing EXT and INT spectra, provided the best fit to the data. There was a moderate genetic correlation between EXT and INT (r = 0.37, SE = 0.02), with bivariate causal mixture models showing extensive overlap in causal variants across the two spectra (94.64%, SE = 3.27). Multivariate GWAS identified 409 lead genetic variants for EXT, 85 for INT, and 256 for the shared traits.
Conclusions
The shared genetic liabilities for EXT and INT identified here help to characterize the genetic architecture underlying these frequently comorbid forms of psychopathology. The findings provide a framework for future research aimed at understanding the shared and distinct biological mechanisms underlying psychopathology, which will help to refine psychiatric classification systems and potentially inform treatment approaches.