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Neural network models have been employed to predict the instantaneous flow close to the wall in a viscoelastic turbulent channel flow. Numerical simulation data at the wall are used to predict the instantaneous velocity fluctuations and polymeric-stress fluctuations at three different wall-normal positions in the buffer region. Such an ability of non-intrusive predictions has not been previously investigated in non-Newtonian turbulence. Our comparative analysis with reference simulation data shows that velocity fluctuations are predicted reasonably well from wall measurements in viscoelastic turbulence. The network models exhibit relatively improved accuracy in predicting quantities of interest during the hibernation intervals, facilitating a deeper understanding of the underlying physics during low-drag events. This method could be used in flow control or when only wall information is available from experiments (for example, in opaque fluids). More importantly, only velocity and pressure information can be measured experimentally, while polymeric elongation and orientation cannot be directly measured despite their importance for turbulent dynamics. We therefore study the possibility to reconstruct the polymeric-stress fields from velocity or pressure measurements in viscoelastic turbulent flows. The neural network models demonstrate a reasonably good accuracy in predicting polymeric shear stress and the trace of the polymeric stress at a given wall-normal location. The results are promising, but also underline that a lack of small scales in the input velocity fields can alter the rate of energy transfer from flow to polymers, affecting the prediction of the polymeric-stress fluctuations.
This article discusses the development of lifestyle and value studies in the market research industry in relation to changing understandings of the consumer in late twentieth-century Sweden. It uses the analytical notion of the ‘sovereign consumer’ to argue that the market research industry both exploited and reinforced this perception of consumers through lifestyles as a means for categorisation. The analysis draws on material from the leading Swedish market research company at the time, Sifo, including its connections to the European industry. The results show how the industry sought to break up the supposedly homogenous postwar Swedish consumption landscape by constructing new consumer types that suited a more market-oriented society, and it was the confident, individualised consumer who sought self-fulfilment that was portrayed as the most attractive type. The article argues that the politics of marketing and advertising played an important part in shaping Swedish consumer culture during the market turn.
This article aims to expand the scope of experimental archaeology to emphasize multilevel variation and interactions across the levels of perception, actions, and outcomes. Such an approach, loosely formulated as the Perception-Process-Product (“Triple P”) framework, offers a more grounded and richer explanation of the past archaeological record. It consists of three principles: (1) acknowledging the inherent trade-off between control and generalizability in the experimental research design; (2) encouraging collaborative projects that involve geographically diverse and nontraditional research participants, such as hobbyists and novices; and (3) adopting a workflow that normalizes the collection and curation of ethological and ethnographic data in experimental projects. Serving as a heuristic device, this alternative mode of knowledge production is highly flexible in nature, where each single component is detachable as dictated by individual research questions.
It is widely accepted that we ought to avoid taking excessive risks of causing gratuitous suffering. The practical implications of this truism, however, depend on how we understand what counts as an excessive risk. Precautionary frameworks help us decide when a risk exceeds the threshold for action, with the recent Birch et al. (2021) framework for assessing invertebrate sentience being one such example. The Birch et al. framework uses four neurobiological and four behavioural criteria to provide an evidence-based standard that can be used in determining when precautionary action to promote invertebrate welfare may be warranted. Our aim in this discussion paper is to provide a new motivation for the threshold approach that the Birch et al. framework represents while simultaneously identifying some possible revisions to the framework that can reduce false positives without abandoning the framework’s precautionary objectives.
It has been shown in the literature that the preference or requirement for immediately preverbal focus placement, found in a number of languages (especially verb-/head-final ones), can result from different syntactic configurations. In some languages (e.g., in Hungarian), immediately preverbal foci are raised to a dedicated projection, accompanied by verb movement). In others (e.g., in Turkish), preverbal foci remain in situ, with any material intervening between the focus and the verb undergoing displacement), to allow for the focus–verb adjacency. We offer a unified account of the two types of preverbal foci, raised and in situ ones, based on their prosodic requirements. Specifically, we show that both types of foci require alignment with an edge of a prosodic constituent but differ in the directionality of alignment (right or left). Our analysis rests on bringing together two independent existing proposals, Focus-as-Alignment and flexible Intonational Phrase (ɩ)-mapping. We show that this approach makes correct predictions for a number of unrelated Eurasian languages and discuss some further implications of this approach.
In exploring deliberative dynamics within mini-publics, it has been observed that initial group-building activities play a crucial role in enhancing deliberative reasoning. However, the influence of liberal democratic practices such as voting mechanisms and the inclusion of strategic or representative stakeholders, on deliberative processes is not well understood. This study undertakes a comparative configurational meta-analysis (CCMA) of 22 minipublics to investigate how these liberal democratic elements influence deliberative reasoning. Results indicate that participants’ deliberative reasoning is significantly enhanced in contexts where initial group activities are coupled with prolonged periods of deliberation and where voting is minimised or absent. In contrast, the presence of voting mechanisms, strategic stakeholder involvement, and a high impact of minipublics on decision-making processes are associated with weaker, negative, or stable participant deliberative reasoning. These findings contribute to the broader discourse on the integration of deliberative and non-deliberative components within minipublics, highlighting the potential negative impact of strategic behaviour on the quality of deliberation.
Progress in understanding multi-scale collisionless plasma phenomena requires employing tools which balance computational efficiency and physics fidelity. Collisionless fluid models are able to resolve spatio-temporal scales that are unfeasible with fully kinetic models. However, constructing such models requires truncating the infinite hierarchy of moment equations and supplying an appropriate closure to approximate the unresolved physics. Data-driven methods have recently begun to see increased application to this end, enabling a systematic approach to constructing closures. Here, we use sparse regression to search for heat flux closures for one-dimensional electrostatic plasma phenomena. We examine OSIRIS particle-in-cell simulation data of Landau-damped Langmuir waves and two-stream instabilities. Sparse regression consistently identifies six terms as physically relevant, together regularly accounting for more than 95 % of the variation in the heat flux. We further quantify the relative importance of these terms under various circumstances and examine their dependence on parameters such as thermal speed and growth/damping rate. The results are discussed in the context of previously known collisionless closures and linear collisionless theory.
Functional Somatic Disorders (FSD) and Internalizing Psychiatric Disorders (IPD) are frequently comorbid and likely share familial/genetic risk factors.
Methods
We performed a Common Factor Multivariate Analysis of 2 FSDs, Fibromyalgia (FM) and Irritable Bowel Syndrome (IBS), and two IPDs, Major Depression (MD) and Anxiety Disorders (AD), in five kinds of Swedish female–female relative pairs: monozygotic (n = 8,052) dizygotic (n = 7216), full siblings (n = 712,762), half-siblings reared together (n = 23,623), and half-siblings reared apart (n = 53,873). Model fitting was by full information maximum likelihood using OpenMx.
Results
The best-fit model included genetic, shared environmental, and unique environmental factors. The common factor, ~50% heritable with a small shared environmental effect, loaded more strongly on the two IPDs (~0.80) than the 2 FSDs (0.40). Disorder-specific genetic effects were larger for the 2 FSDs (~0.30) than the 2 IPDs (~0.03). Estimated genetic correlations were high for MD and AD (+0.91), moderate between IBS and IPDs (+0.62), and intermediate between FM and MD (+0.54), FM and AD (+0.28), and FM and IBS (+0.38). Shared environmental influences on all disorders were present but small.
Conclusions
In women, FSDs and IPDs shared a moderate proportion of their genetic risk factors, greater for IBS than for FM. However, the genetic sharing between IBS and FM was less than between MD and AD, suggesting that FSDs do not form a highly genetically coherent group of disorders. The shared environment made a modest contribution to the familial aggregation of FSDs and IPDs.
Antisocial behavior (ASB) is relatively common in childhood and adolescence. While it harms victims, perpetrators are at increased risk of disadvantageous adult outcomes. Developmental heterogeneity is well documented; distinctions have been drawn between early-onset persistent, adolescent-onset, and childhood-limited pathways. We examine whether individuals in some pathways face worse mid-life outcomes than others and whether the pattern differs across sexes.
Methods
The 1970 British Cohort Study assessed parent-reported ASB measures at ages 5, 10, and 16. We classified developmental pathways using the Rutter A scale conduct questions. We categorized children scoring in the top 10% of the distribution as showing high ASB, separately at each assessment. Approximately 6000 individuals were classified into low (73%), childhood-limited (11%), adolescent-onset (9%), and early-onset persistent (7%) groups. We tested associations of ASB grouping with age 46 social, economic, and health outcomes, controlling for a range of covariates.
Results
The childhood-limited group showed little mid-life difficulty. The early-onset persistent and adolescent-onset groups both showed a pattern of worse midlife outcomes for boys and girls.
Conclusions
The results highlight that ASB in young people is not transient and that prevention and treatment during early childhood and adolescence are warranted.
We present direct numerical simulations of a supersonic, zero-pressure-gradient, adiabatic turbulent boundary layer at a free-stream Mach number of $M_\infty =2$, over cubical roughness elements. The simulations are complemented by a subsonic rough-wall boundary layer over the same geometry, alongside reference smooth-wall data, allowing us to elucidate compressibility effects. The simulations feature turbulent flow transitioning from a smooth to a rough surface with an extended computational domain to facilitate recovery. At the smooth-to-rough transition, we compare the development of an internal boundary layer between the subsonic and supersonic cases, introducing a novel definition of its height that is less sensitive to local compressibility effects. We demonstrate that, although the internal boundary-layer growth is similar to the subsonic case, a delayed equilibrium is expected for the supersonic case due to the sudden growth of the external boundary-layer thickness at the onset of roughness. Turbulence statistics are then evaluated far from the surface transition, where various compressibility transformations reveal outer-layer similarity for the mean velocity. We find that the classical van Driest II transformation can also be applied to rough walls, at least in the adiabatic case. Analysis of thermal statistics for the supersonic case confirms the significant influence that roughness has on both mean and fluctuating temperature fields, which, unlike velocity fields, do not display outer-layer similarity. Nonetheless, we find that the temperature–velocity relation established for smooth walls is also valid over rough surfaces, implying that the mean temperature field can be predicted solely based on the mean velocity.
Cross-linguistically, vowel lowering/retraction are common strategies for resolving articulatory conflicts between high vowels and back consonants. Allophonic lowering of vowels /i/ and /u/ adjacent to uvulars has also been documented for several Southern Quechua dialects. For the Chanka dialect (Andahuaylas, Peru), traditional descriptions note similar allophony, but no studies have confirmed it. Unlike other Southern Quechua dialects, Chanka has only two dorsals, which contrast for both manner and place. Thus, Chanka may apply resolution processes differently, for reasons of production and/or perception.
The current investigation considers to what extent articulatory conflict resolution between high vowels and the uvular consonant occurs in Chanka. Acoustic data from a controlled experiment include 3,827 Chanka vowels from 22 speakers, balanced for sex and location of residence. Despite an overall uvular effect found, intra- and interspeaker variation shows three different allophony patterns: categorical, null, and variable. A sex-based difference in patterns is also found for rural speakers, which hints at influence from Spanish on this process in Quechua given differing Spanish proficiencies. Results seem to indicate that consonant place adaptation may exist as an additional, innovative Chanka strategy, also with three variable patterns: stable uvular, stable velar, and homorganic with vowel. This flexibility in vowel and consonant place may partially relate to Chanka’s small phoneme inventory, which allows for a broader range of realizations without creating mergers. Speakers thus alternate between vowel lowering and consonant movement as solutions: sometimes the vowel place accommodates to the fricative like in many languages, and at other times the fricative follows the vowel.
The extent to which the public takes an interest in politics has long been argued to be foundational to democracy, but the want of appropriate data has prevented cross-national and longitudinal analysis. This letter takes advantage of recent advances in latent-variable modelling of aggregate survey responses and a comprehensive collection of survey data to generate dynamic comparative estimates of macrointerest, that is, aggregate political interest, for over a hundred countries over the past four decades. These macrointerest scores are validated with other aggregate measures of political interest and of other types of political engagement. A cross-national and longitudinal analysis of macrointerest in advanced democracies reveals that along with election campaigns and inclusive institutions, it is good economic conditions, not bad times, that spur publics to greater interest in politics.
Let $\mathcal {X}\to \mathbb {D}$ be a flat family of projective complex 3-folds over a disc $\mathbb {D}$ with smooth total space $\mathcal {X}$ and smooth general fibre $\mathcal {X}_t,$ and whose special fiber $\mathcal {X}_0$ has double normal crossing singularities, in particular, $\mathcal {X}_0=A\cup B$, with A, B smooth threefolds intersecting transversally along a smooth surface $R=A\cap B.$ In this paper, we first study the limit singularities of a $\delta $-nodal surface in the general fibre $S_t\subset \mathcal {X}_t$, when $S_t$ tends to the central fibre in such a way its $\delta $ nodes tend to distinct points in R. The result is that the limit surface $S_0$ is in general the union $S_0=S_A\cup S_B$, with $S_A\subset A$, $S_B\subset B$ smooth surfaces, intersecting on R along a $\delta $-nodal curve $C=S_A\cap R=S_B\cap B$. Then we prove that, under suitable conditions, a surface $S_0=S_A\cup S_B$ as above indeed deforms to a $\delta $-nodal surface in the general fibre of $\mathcal {X}\to \mathbb {D}$. As applications, we prove that there are regular irreducible components of the Severi variety of degree d surfaces with $\delta $ nodes in $\mathbb {P}^3$, for every $\delta \leqslant {d-1\choose 2}$ and of the Severi variety of complete intersection $\delta $-nodal surfaces of type $(d,h)$, with $d\geqslant h-1$ in $\mathbb {P}^4$, for every $\delta \leqslant {{d+3}\choose 3}-{{d-h+1}\choose 3}-1.$
Individuals with long-term physical health conditions (LTCs) experience higher rates of depression and anxiety. Conventional self-report measures do not distinguish distress related to LTCs from primary mental health disorders. This difference is important as treatment protocols differ. We developed a transdiagnostic self-report measure of illness-related distress, applicable across LTCs.
Methods
The new Illness-Related Distress (IRD) scale was developed through thematic coding of interviews, systematic literature search, think-aloud interviews with patients and healthcare providers, and expert-consensus meetings. An internet sample (n = 1,398) of UK-based individuals with LTCs completed the IRD scale for psychometric analysis. We randomly split the sample (1:1) to conduct: (1) an exploratory factor analysis (EFA; n = 698) for item reduction, and (2) iterative confirmatory factor analysis (CFA; n = 700) and exploratory structural equation modeling (ESEM). Here, further item reduction took place to generate a final version. Measurement invariance, internal consistency, convergent, test–retest reliability, and clinical cut-points were assessed.
Results
EFA suggested a 2-factor structure for the IRD scale, subsequently confirmed by iteratively comparing unidimensional, lower order, and bifactor CFAs and ESEMs. A lower-order correlated 2-factor CFA model (two 7-item subscales: intrapersonal distress and interpersonal distress) was favored and was structurally invariant for gender. Subscales demonstrated excellent internal consistency, very good test–retest reliability, and good convergent validity. Clinical cut points were identified (intrapersonal = 15, interpersonal = 12).
Conclusion
The IRD scale is the first measure that captures transdiagnostic distress. It may aid assessment within clinical practice and research related to psychological adjustment and distress in LTCs.
To describe inpatient clinical pharmacists’ interventions on injectable antibiotics and assess their impact on prospective audit and feedback (PAF) by the antimicrobial stewardship program (ASP).
Design:
Retrospective cohort study.
Setting:
Freestanding, quaternary-care, pediatric and obstetric hospital.
Methods:
We identified all clinical pharmacist interventions (iVents) documented on injectable antibiotics from November 1, 2020, through October 31, 2022. PAF performed on injectable antibiotics during the same timeframe was captured. We reported characteristics of clinical pharmacist iVents on injectable antibiotics. We also compared the incidence of PAF recommendations (PAFR) between PAF cases with prior iVent documentation for the same patient and antibiotic and those without preceding iVent documentation.
Results:
A total of 5,277 iVents were documented on injectable antibiotic orders. Cefazolin had the highest volume of iVents (13%). Antibiotic dose optimization was the most frequent iVent type (34%). A total of 5,152 PAF were documented by ASP pharmacists on injectable antibiotics during the study period, with 1,782 (34%) resulting in a PAFR. A total of 999 PAF (19%) had a prior iVent; 4,153 PAF did not. Comparing the two groups, the incidence of a PAFR was significantly higher in the PAF with prior iVent group compared to the PAF without prior iVent group (383/999, 38% vs 1,399/ 4,153, 34%; P = 0.006). Antibiotic discontinuation was the most common type of PAFR in both groups.
Conclusions:
Clinical pharmacists serve as ASP ambassadors, intervening on injectable antibiotic orders to improve prescribing. Future efforts to expand and incorporate clinical pharmacists in ASP initiatives are warranted.