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The vast uprisings across Iranian cities in the fall of 2022 caught many of Iranian studies scholars and academic feminists in the diaspora off guard. My first confrontation was with trauma. Like many others, I worried about the lives and safety of my loved ones, political dissidents and prisoners from different ethnic backgrounds, feminists and queer activists on the ground, and, of course, the millennials and Gen Z, who unexpectedly emerged as the new revolutionaries. However, with the first wave of emotional encounters settled, the uprising unlocked another level of cognitive puzzlement critical to my academic life. I struggled to find comprehensive theoretical frameworks and supporting scholarship within Iranian studies or Iranian academic feminism to help my media and scholarly audiences grasp what was unfolding. In this reflective piece, I discuss how the scholarship of Iranian studies and feminism/s formulated the question of gender in liberal and radical essentialist multiculturalism and argue that Woman, Life, Freedom (Zan, Zendegi, Azadi; WLF) urges us to adopt an antiracist and radical democratic approach, deconstructing the imagined Iran in the scholarship, and reconstructing it as a welcoming and inclusive discursive space for racialized and queer Iranians.
Aside from the obvious and central role of women in Iran's Woman, Life, Freedom (Zan, Zendegi, Azadi) uprising that began in the fall of 2022, two other (f)actors have played a crucial role in defining the movement's demands and propelling it forward, namely, students and music. University students have a long tradition of serving as righteous agitators of uprisings in Iran, both before and after the 1979 revolution, as does music in inspiring and soundtracking them. But in this arguably greatest ideological and political threat to the Islamic Republic since its founding, something unprecedented happened: the fusion of student activism and song in the form of a recognizable genre, unattached to a specific political ideology although fully supportive of the Woman, Life, Freedom uprising and its demands for liberation and freedom for all.
Julia Hillner's life of Helena, mother of Constantine, is the twentieth volume published in OUP's ‘Women in Antiquity’ series, launched in 2010 with Duane Roller's biography of Cleopatra. An earlier and overlapping series on the same theme — Routledge's ‘Women of the Ancient World’ — began in 2006 and adds a further half-dozen titles to the portfolio, from Olympias: Mother of Alexander the Great by Elizbeth Carney to The Women of Pliny's Letters by Jo-Ann Shelton.1 The pace of publication picked up in 2018 and two lives from the later Roman empire — of Melania the Younger by Elizabeth Clark and Sosipatra of Pergamum by Heidi Marx — appeared alongside Celia Schultz's account of Fulvia in 2021, for example. Late republican and late antique women dominate the catalogue overall, with some empresses and exotic leaders in between, and alongside a smaller set of Hellenistic royalty.2
The aim of the study was to investigate longitudinal trajectories of change in anxiety and depression symptoms in Polish adolescents during the second year of the COVID-19 pandemic and after the outbreak of the war in Ukraine. Additionally, we aimed to identify risk/protective factors and outcomes associated with these trajectories.
Method:
We collected data in three waves between November 2021 and May 2022. Adolescents (N = 281 in the first wave) completed the Patient Health Questionnaire-9, the Generalized Anxiety Disorder-7, the Filial Responsibility Scale for Youth, and questions related to the COVID-19 pandemic and war in Ukraine.
Results:
We identified three trajectories of depressive symptoms: resilient with low, stable symptoms (71% of participants), chronically elevated symptoms (11%), and acute symptoms followed by recovery (18%). We distinguished two trajectories of anxiety symptoms: resilient (75%) and chronic (25%). Non-resilient trajectories were predicted by higher levels of familial unfairness (perceived lack of equality and reciprocity in the family), relationship difficulties at school and at home, older age, and poor socioeconomic status. Chronic depressive and anxiety symptoms were associated with higher war-related concerns.
Discussion:
These findings can inform preventive and therapeutic interventions for at-risk adolescents to reduce negative long-term outcomes of social crises.
In this paper, we are concerned with certain invariants of modules, called reducing invariants, which have been recently introduced and studied by Araya–Celikbas and Araya–Takahashi. We raise the question whether the residue field of each commutative Noetherian local ring has finite reducing projective dimension and obtain an affirmative answer for the question for a large class of local rings. Furthermore, we construct new examples of modules of infinite projective dimension that have finite reducing projective dimension and study several fundamental properties of reducing dimensions, especially properties under local homomorphisms of local rings.
The aim of this paper is to argue that the normative significance of the inner aspects of filial piety – in particular, filial love – is better captured when we understand filial love as part of the virtue of filial piety rather than as an object of duty. After briefly introducing the value of filial love, I argue that the idea of a duty to love one's loving parents faces serious difficulties in making sense of the normative significance of filial love. Then I show why the virtue-ethical approach to filial love, which views filial love as a constitutive part of the virtue of filial piety, can do justice to its normative significance while avoiding the difficulties.
To characterise transesophageal echocardiography practice patterns among paediatric cardiac surgical centres in the United States and Canada.
Methods:
A 42-question survey was sent to 80 echocardiography laboratory directors at paediatric cardiology centres with surgical programmes in the United States and Canada. Question domains included transesophageal echocardiography centre characteristics, performance and reporting, equipment use, trainee participation, and quality assurance.
Results:
Fifty of the 80 centres (62.5%) responded to the survey. Most settings were academic (86.0%) with 42.0% of centres performing > 350 surgical cases/year. The median number of transesophageal echocardiograms performed/cardiologist/year was 50 (26, 73). Pre-operative transesophageal echocardiography was performed in most surgical cases by 91.7% of centres. Transesophageal echocardiography was always performed by most centres following Norwood, Glenn, and Fontan procedures and by < 10% of centres following coarctation repair. Many centres with a written guideline allowed transesophageal echocardiography transducer use at weights below manufacturer recommendations (50.0 and 61.1% for neonatal and paediatric transducers, respectively). Most centres (36/37, 97.3%) with categorical fellowships had rotations which included transesophageal echocardiography participation. Large surgical centres (>350 cases/year) had higher median number of transesophageal echocardiograms/cardiologist/year (75.5 [53, 86] versus 35 [20, 52], p < 0.001) and more frequently used anaesthesia for diagnostic transesophageal echocardiography ≥ 67% of time (100.0 versus 62.1%, p = 0.001).
Conclusions:
There is significant variability in transesophageal echocardiography practice patterns and training requirements among paediatric cardiology centres in the United States and Canada. Findings may help inform programmatic decisions regarding transesophageal echocardiography expectations, performance and reporting, equipment use, trainee involvement, and quality assurance.
In this paper we study the drift parameter estimation for reflected stochastic linear differential equations of a large signal. We discuss the consistency and asymptotic distributions of trajectory fitting estimator (TFE).
We propose a novel measure of the market return tail risk premium based on minimum-distance state price densities recovered from high-frequency data. The tail risk premium extracted from intra-day S&P 500 returns predicts the market equity and variance risk premiums and expected excess returns on a cross section of characteristics-sorted portfolios. Additionally, we describe the differential role of the quantity of tail risk, and of the tail premium, in shaping the future distribution of index returns. Our results are robust to controlling for established measures of variance and tail risk, and of risk premiums, in the predictive models.
How were unskilled workers selected and hired in preindustrial labor markets? We exploit records from the rebuilding of St Paul’s Cathedral, London (1672–1748), to analyze the hiring and employment histories of over 1,000 general building laborers, the benchmark category of “unskilled” workers in long-run wage series. Despite volatile demand, St Paul’s created a stable workforce by rewarding the tenure of long-standing workers. More senior workers received more days of work each month, preference when jobs were scarce, and the opportunity to earn additional income. We find the cathedral’s strategy consistent with reducing hiring frictions and turnover costs.
The occurrence of various forms of disasters has increased worldwide. In South Korea, community resilience is particularly emphasized, especially in response to large-scale disasters in regional and group units. This study investigated the association between community resilience and the quality of life of disaster-affected people, and identified the moderating effects of perception of government relief services.
Methods:
Data from the third long-term survey on the change of life of disaster-affected people conducted in 2018 by the National Disaster Management Research Institute were used. The study selected 1046 participants ages ≥ 19 years from among the disaster-affected people. Statistical analyses were performed using Model 1 of the PROCESS Macro 4.0 in the SPSS program.
Results:
Community resilience positively affected disaster-affected people’s quality of life. The perception of government relief services significantly strengthened the association between community resilience and quality of life.
Conclusions:
The study highlights the importance of enhancing community resilience to improve disaster-affected people’s quality of life and emphasizes the role of perception of government relief services in reinforcing this relationship. Several practical and political measures that focus on improving community resilience and perception of government relief services are suggested to enhance disaster-affected people’s quality of life.
Drag for wall-bounded flows is directly related to the spatial flux of spanwise vorticity outward from the wall. In turbulent flows a key contribution to this wall-normal flux arises from nonlinear advection and stretching of vorticity, interpretable as a cascade. We study this process using numerical simulation data of turbulent channel flow at friction Reynolds number $Re_\tau =1000$. The net transfer from the wall of spanwise vorticity created by downstream pressure drop is due to two large opposing fluxes, one which is ‘down-gradient’ or outward from the wall, where most vorticity concentrates, and the other which is ‘up-gradient’ or toward the wall and acting against strong viscous diffusion in the near-wall region. We present evidence that the up-gradient/down-gradient transport occurs by a mechanism of correlated inflow/outflow and spanwise vortex stretching/contraction that was proposed by Lighthill. This mechanism is essentially Lagrangian, but we explicate its relation to the Eulerian anti-symmetric vorticity flux tensor. As evidence for the mechanism, we study (i) statistical correlations of the wall-normal velocity and of wall-normal flux of spanwise vorticity, (ii) vorticity flux cospectra identifying eddies involved in nonlinear vorticity transport in the two opposing directions and (iii) visualizations of coherent vortex structures which contribute to the transport. The ‘D-type’ vortices contributing to down-gradient transport in the log layer are found to be attached, hairpin-type vortices. However, the ‘U-type’ vortices contributing to up-gradient transport are detached, wall-parallel, pancake-shaped vortices with strong spanwise vorticity, as expected by Lighthill's mechanism. We discuss modifications to the attached eddy model and implications for turbulent drag reduction.
A long-wave asymptotic model is developed for the flow of an axisymmetric viscous film lining the interior of a tube for the case where slip occurs at the tube wall. Both the case of a falling film with a passive air core and that of a film driven up the tube by pressure-driven airflow are considered. The impact of slip on the net liquid volume flux is discussed, and linear stability analysis of the evolution equation is conducted to identify the impact of slip on the phase speed and growth rates of disturbances in each case. The presence of slip enhances the growth rates, though its impact on phase speed depends on the film thickness and the strength of the core airflow. For some parameter combinations, slip can modify the phase speed without altering the base flow. The nonlinear evolution of the free surface is then studied numerically. For falling films, increasing the slip length reduces the critical thickness required for plug formation to occur. Families of travelling wave solutions are found via continuation and are used to derive a simple formula for the dependence of this critical thickness on the slip length; this formula is shown to hold for small slip length. For air-driven films, the topology of streamlines in the film can be altered by slip at the wall; if the slip length is large enough, it can prevent regions of recirculation from forming at the wave crest.
Uplift of the overriding plate at a subduction zone denotes interseismic strain accumulation, which is subsequently released during a megathrust earthquake. Although most interseismic strain is thought to be released elastically, observations of uplifted coastal regions at subduction zones worldwide indicate that some strain may result in permanent uplift. The Grays Harbor and Willapa Bay (Washington, USA) coastal region of the Cascadia subduction zone hosts flights of marine terraces testifying to late Pleistocene rock uplift. Our new detailed mapping of the marine terraces recognizes nine new units, including estuarine and fluvial sediments. Luminescence dating, relative age based on soil maturity and terrace elevation, and an evaluation of previous ages from fossil shells collectively constrain the probable ages of three estuarine units to sea-level high stands during Marine Isotope Stages 5a, 5c, and 5e. We estimate an average uplift rate of 0.4 ± 0.1 mm/yr for the terraced estuarine units, consistent with other Pleistocene uplift and incision rates in Cascadia. When compared with observed interseismic vertical deformation, these rates suggest that about one-tenth of interseismic strain may become permanent. The values are permissible within the uncertainties of uplift based on regional estimates of interseismic vertical strain rates and of coseismic subsidence.