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There is no greater honor for an author than to respond to such generous and thoughtful engagement with one’s work such as the two commentaries by Mila Dragojević and Tamara Trošt. These commentaries are that much more appreciated as both Dragojević and Trošt have contributed tremendous scholarship on memory politics and historical narratives in the Western Balkans and in many ways Yellow Star, Red Star builds on their own work.
This article presents a new reading of the Dārāb-nāma (Book of Dārāb, ca. eleventh–twelfth century), a medieval popular narrative in prose (dāstān) ascribed to the storyteller Abū Ṭāhir Ṭarsūsī. While the narrative belongs to the Persian tradition of the Alexander romance, the Alexander figure it depicts bears little resemblance to that presented in high classical verse-forms by the likes of Firdawsī, Niẓāmī, Amīr Khusraw Dihlavī, or Jāmī. Although still a conqueror, legitimate ruler, and champion of Islam, the Alexander of the Dārāb-nāma appears in a strongly negative light: he is lame, cowardly, and sly. In fact, most of his success he owes to his once opponent and later wife, Būrān-dukht: could she be the true hero in the story? Drawing on a critical examination of characters based on Greimas's actantial model, this study probes the authorial program and intended audience of the Dārāb-nāma, and suggests the work can be read as mock-epic, possibly to cater to a Zoroastrian audience.
A highly compressive effect would suppress the mixing of the shear layer in a convex wall jet. The spanwise distributed protrusions at the nozzle lip are employed to achieve mixing enhancement in this study. The mixing characteristics and enhancement mechanisms are numerically investigated by the delayed detached-eddy simulation method based on the two-equation shear-stress transport model. A widely applicable flow spatiotemporal analysis method, called proper orthogonal decomposition (POD), is used to gain further insight into the dynamical behaviours of the flow instability mode. The results reveal that the centrifugal effect maintains and amplifies the initial perturbations induced by the spanwise distributed heterogeneities, resulting in forced streamwise vortices. The instabilities induced by the streamwise vortices significantly increase the growth rate of the jet half-width and the shear layer vorticity thickness. The spanwise wavelength of the streamwise vortices is consistent with the spanwise distributed forced excitation. In addition, the spanwise meandering motion of the streamwise vortices is observed, which is usually associated with the streamwise travelling wave. This is further confirmed by the POD analysis of the spanwise velocity fluctuation in both stream-radial and stream-span sections. Also, the spatial distributions of the POD modes with the highest energy provide information on the secondary instability modes. Both sinuous and varicose types of disturbances are observed in the unforced jet, whereas the forced jet seems to be dominated by the sinuous type instability, which is more easily excited than the varicose type instability. Moreover, the turbulence intensity in the forced jet is also significantly enhanced as expected due to the earlier and stronger streamwise vortices and associated instabilities. The enhanced turbulent characteristics of the highly compressible condition tend to be isotropic, whereas in the unforced jet, it is anisotropic due to the strong compressibility suppressing the spanwise turbulent fluctuations.
The distinct operational characteristics of military aircraft, relative to civil aircraft, have impeded the standardisation of airworthiness management practice across Europe. Standardisation has been further deterred by the intertwined certification and qualification activities specific to military aircraft. The management of airworthiness in European military aviation has undergone significant changes over the past 15 years, with the progress made attributed to the harmonisation efforts driven by the European Defence Agency (EDA). The creation of a Military Airworthiness Authorities Forum and the development of the European Military Airworthiness Requirements (EMAR) have been instrumental in creating a more homogenous regulatory landscape. The examples of five main players of the European aerospace sector, namely France, Italy, Germany, Spain and the United Kingdom, are examined from the point of view of adoption and implementation of an EMARs-based system. Their regulatory structures have revealed similarities and primary differences. The EMAR’s framework has enabled a gradual build-up of technical knowhow within the European countries who embraced this, civil-based, framework. All five countries have adopted EMARs, though through a variety of regulatory constructs. Their regulatory structures exhibit diverse practices, especially in how initial and continuing airworthiness is managed. Some countries have also elected to have more than one authority overseeing/been responsible for airworthiness. Closer collaboration between national Military Aviation Authorities (MAAs) can be achieved through standardisation at regulatory structure level. The establishment of a joint MAAs may be the next logical step in the harmonisation process, in line with EDA objective’ for a EU-wide authority with greater powers.
Contested from the early period of Menelik territorial expansion into the hinterlands of Addis Ababa, areas in the vicinity of Suba Park continue to be a bone of political contention in the context of the struggle of Oromo people against the expansion of the central state. A flashpoint is the Oromo protests (2014–2018) against federal state territorial expansion into the Oromo ethnic territory through a new Addis Ababa Master Plan that led to the deposition of Haile Mariam Desalegn and the installation of Abiy Amhed. I investigate how the state environmental policy maintained for extraction and conservation in the Suba forest between the late 1890s and 2018 affected the Tulama modes of land use related to their worldviews and their use of material, social, spiritual and symbolic values of land in the struggle for land and resource rights. I used ethnographic methods that included in-depth and semi-structured interviews, participant observations and document analysis to investigate long-standing and complex land-based conflicts in and around Suba Park. I show how simplifying state narratives of environmental policy entrenched in centralized state administration and exclusionist resource management schemes have reinforced a wider concern about indigenous land and resource rights and decentralized environmental governance.
Separation induced by impinging shock is a fundamental feature in supersonic and hypersonic flows; however, it is difficult to predict the pressure plateau due to a limited theoretical understanding of the effect of impinging shock strength. In this study, the evolution of the separation configuration and pressure distribution with changes in impinging shock angle is examined, and a theoretical equation for predicting the pressure plateau based on minimum entropy production is proposed. For validation, an experimental device that can measure wall pressure in the separation region at high spatiotemporal resolution is developed, and schlieren visualization is employed to capture the flow structure. Accordingly, the fine characteristics of pressure distributions along the centreline of the separation region as well as the reattachment region induced by shock impingement at various angles ($8.5^\circ$ to $30.5^\circ$) are obtained in a flow of Mach number 5 and Reynolds number ${\approx }1.4\times 10^7\ {\rm m}^{-1}$. The experimental results agree well with the theoretical results; both indicate that the pressure distribution is strongly related to the impinging shock strength and that there is a critical flow deflection angle $\alpha ^\ast$ (${\approx }20.8^\circ$ for Mach 5). The pressure in the separation region grows nearly linearly with increasing impinging shock strength when the flow deflection angle of the impinging shock is less than $\alpha ^\ast$; the pressure stops growing and resides in a small range when the flow deflection angle is larger than $\alpha ^\ast$. Therefore, the impinging shock strength should be considered a main factor when predicting the pressure plateau.
Research on street-level bureaucracy has tended to focus on individual and organisational factors that influence street-level practice. To date, empirical research has insufficiently explored the contribution of wider socio-cultural factors in street-level decision making. Drawing on data from a qualitative study of social assistance in Pakistan, this article examines how cultural patronage practices of sifarish intersect with street-level social welfare operations. Results highlight the importance of sifarish in informing decision-making processes and in enabling access to social assistance. In this manner, people providing sifarish (called sifarishie) operate as informal third-party actors. The findings challenge the dominant view of street-level operation that the decision making at street level is solely guided by individual and organisational factors.
Auditory verbal hallucinations (AVH), or voice-hearing, can be a prominent symptom during fluctuating mood states in bipolar disorder (BD).
Aims:
The current study aimed to: (i) compare AVH-related distress in BD relative to schizophrenia (SCZ), (ii) examine correlations between phenomenology and voice beliefs across each group, and (iii) explore how voice beliefs may uniquely contribute to distress in BD and SCZ.
Method:
Participants were recruited from two international sites in Australia (BD=31; SCZ=50) and the UK (BD=17). Basic demographic-clinical information was collected, and mood symptoms were assessed. To document AVH characteristics, a 4-factor model of the Psychotic Symptoms Rating Scale and the Beliefs about Voices Questionnaire-Revised were used. Statistical analyses consisted of group-wise comparisons, Pearson’s correlations and multiple hierarchical regressions.
Results:
It was found that AVH-related distress was not significantly higher in BD than SCZ, but those with BD made significantly more internal attributions for their voices. In the BD group, AVH-related distress was significantly positively correlated with malevolence, omnipotence and resistance, However, only resistance, alongside mania and depressive symptoms, significantly contributed to AVH-related distress in BD.
Discussion:
Our findings have several clinical implications, including identification of voice resistance as a potential therapeutic target to prioritise in BD. Factoring in the influence of mood symptoms on AVH-related distress as well as adopting more acceptance-oriented therapies may also be of benefit.
The present study uses Galinstan as a test fluid to investigate the shock-induced atomisation of a liquid metal droplet in a high-Weber-number regime $(We \sim 400\unicode{x2013}8000)$. Atomisation dynamics is examined for three test environments: oxidizing (Galinstan–air), inert (Galinstan–nitrogen) and conventional fluids (deionised water–air). Due to the readily oxidizing nature of liquid metals, their atomisation in an industrial scale system is generally carried out in inert atmosphere conditions. However, no previous study has considered gas-induced secondary atomisation of liquid metals in inert conditions. Due to experimental challenges associated with molten metals, laboratory scale models are generally tested for conventional fluids like deionised water, liquid fuels, etc. The translation of results obtained from conventional fluid to liquid metal atomisation is rarely explored. Here a direct multiscale spatial and temporal comparison is provided between the atomisation dynamics of conventional fluid and liquid metals under oxidizing and inert conditions. The liquid metal droplet undergoes breakup through the shear-induced entrainment mode for the studied range of Weber number values. The prevailing mechanism is explained based on the relative dominance of droplet deformation and Kelvin–Helmholtz wave formation. The study provides quantitative and qualitative similarities for the three test cases and explains the differences in morphology of fragmenting secondary droplets in the oxidizing test case (Galinstan–air) due to rapid oxidation of the fragmenting ligaments. A phenomenological framework is postulated for predicting the morphology of secondary droplets. The formation of flake-like secondary droplets in the Galinstan air test case is based on the oxidation rate of liquid metals and the properties of the oxide layer formed on the atomizing ligament surface.
Recently, we have been witnessing the emergence of scholarly interest and professional advocacy efforts centering on systemic, intersectional, fluid, and contextualized inequalities and dynamic hierarchies constructed by essentialized and idealized (non)native speakerhood (speakerism/speakering) and its personal and professional implications for English language teaching (ELT) profession(als). This critical literature review aims to portray, examine, and guide the existing scholarship focusing on a myriad of issues related to ELT professionals traditionally conceptualized as “native” and “non-native” English-speaking teachers. We come to a working conclusion that (non)native speaker/teacherhood is an epistemologically hegemonic, historically colonial, contextually enacted (perceived and/or ascribed), and dynamically experienced socio-professional phenomenon intersecting with other categories of identity (e.g., race, ethnicity, country of origin, gender, religion, sexuality/sexual orientation, social class, schooling, passport/visa status, and physical appearance, among others) in making a priori connections and assertions about individuals as language users and teachers and thereby forming discourses and practices of (in)equity, privilege, marginalization, and discrimination in ELT.
Neuropsychologists have difficulty detecting cognitive decline in high-functioning older adults because greater neurological change must occur before cognitive performances are low enough to indicate decline or impairment. For high-functioning older adults, early neurological changes may correspond with subjective cognitive concerns and an absence of high scores. This study compared high-functioning older adults with and without subjective cognitive concerns, hypothesizing those with cognitive concerns would have fewer high scores on neuropsychological testing and lower frontoparietal network volume, thickness, and connectivity.
Method:
Participants had high estimated premorbid functioning (e.g., estimated intelligence ≥75th percentile or college-educated) and were divided based on subjective cognitive concerns. Participants with cognitive concerns (n = 35; 74.0 ± 9.6 years old, 62.9% female, 94.3% White) and without cognitive concerns (n = 33; 71.2 ± 7.1 years old, 75.8% female, 100% White) completed a neuropsychological battery of memory and executive function tests and underwent structural and resting-state magnetic resonance imaging, calculating frontoparietal network volume, thickness, and connectivity.
Results:
Participants with and without cognitive concerns had comparable numbers of low test scores (≤16th percentile), p = .103, d = .40. Participants with cognitive concerns had fewer high scores (≥75th percentile), p = .004, d = .71, and lower mean frontoparietal network volumes (left: p = .004, d = .74; right: p = .011, d = .66) and cortical thickness (left: p = .010, d = .66; right: p = .033, d = .54), but did not differ in network connectivity.
Conclusions:
Among high-functioning older adults, subjective cognitive decline may correspond with an absence of high scores on neuropsychological testing and underlying changes in the frontoparietal network that would not be detected by a traditional focus on low cognitive test scores.
Inspired by the objectives of the Church of England’s Living Ministry Research Project (to understand the factors that enable clergy to flourish and to understand how these factors vary according to person, background, etc.), the present analyses were designed to test the capacity of an individual differences approach to the science of clergy well-being for delivering such objectives. The specific case in point concerned understanding the connections between migration to digital technology and changes in clergy well-being during the pandemic. The data demonstrated how the individual differences approach both offered explanatory power and provided insights into how personal support and professional development could be most effectively structured and targeted.
If preference-based freedom rankings are based on all-things-considered preferences, they risk judging phenomena of adaptive preferences as freedom enhancing. As a remedy, it has been suggested to base preference-based freedom rankings on reasonable preferences. But this approach is also problematic. This article argues that the quest for a remedy is unnecessary. All-things-considered preferences retain information on whether the availability of an option contributes to the value that freedom has for a person’s self-expression. If preference-based freedom rankings use all-things-considered preferences to evaluate whether an option contributes to a person’s self-expression, they are immune to the problem posed by adaptive preferences.
This essay proposes a revisionist interpretation of the debates between Buddhists and Protestants in nineteenth-century Siam. It argues that the Buddhist–Protestant debates were different in nature from the earlier Buddhist–Catholic clashes, which were interwoven with colonial ambitions and occasionally erupted in acts of persecution against the Catholics. The debates among Protestant missionaries and the Siamese royalist elite, monks and lay literati comprised an intellectual exchange mediated by the printing press. Centred around the encapsulation and bifurcation of religiosity and modernity, the debates helped the literati readjust their epistemological position during Siam's early modern era, creating a discursive space for the emergence of a form of scientific Buddhism. The latter affirms that Buddhism not only accords with aspects of modern science but was precocious in its understanding of features such as the analysis of mental states prior to modern scientific methods. The ‘scientificity’ of Buddhism as articulated by Siamese literati had long-lasting effects on Thai intellectual life well into the twentieth century.