bluuebunny/crossref_metadata_2025 huggingface dataset:
Sex Doll Specifications versus Human Body Characteristics
Authors: Hanson Kenneth R. , Döring Nicola , Walter Roberto
Published: May 2024

Sex dolls have been criticized for reproducing unrealistic expectations about human bodies. Yet precise sex doll measurements are lacking in the literature nor has there been any systematic attempt to determine the extent to which sex dolls exaggerate human characteristics. To address this gap, we compared the specifications of sex dolls marketed in the USA with the characteristics of women and men living in the USA. Specifically, we tested if and to what degree female dolls were slimmer (H1) and male dolls more muscular (H2) than female and male humans, respectively. Furthermore, we tested if and to what degree female dolls’ breasts (H3) and male dolls’ penises (H4) were larger than those of women and men. We also tested if sex dolls’ observed race/ethnicity was more often White than that of the US population (H5). In 2023, we collected the measures of all 757 full-body sex dolls marketed by the US retailer SexyRealSexDolls.com. Body measures from the US population were extracted from scientific literature. Descriptive and inferential statistical analyses were performed using R. All hypotheses were fully or partially confirmed, which indicated that sex dolls marketed in the USA are not realistic depictions of the US population but hypergendered (H1, H2), hypersexualized (H3, H4), and racially fetishized (H5). Implications of the lack of realism are discussed.
Bringing imperialism back in: for an anthropology against empire in the twenty-first century
Authors: Campbell Stephen , Aung Geoffrey Rathgeb
Published: May 2024

What can a critical analysis of imperialist political economy offer the decolonial turn in the contemporary social sciences? How might revisiting “classic” anti-imperialist thought and politics from the global South push scholars and activists to envision a more revolutionary decolonization? And how, in our discipline’s history, have anthropologists variously opposed or been complicit with the workings of imperialist power? In this article, and in the special issue of Dialectical Anthropology that this article introduces, we engage these questions with a call to bring imperialism “back in” to anthropological research and analysis. Our proposal, however, is not simply for an anthropology of empire, but for an anthropology against empire—a project, that is, not solely of interpreting imperialism, but of aiding its abolition.
The impact of transformational leadership on classroom interaction in UAE secondary schools
Authors: Abuhassira Haifaa Y. , Razak Ahmad Zabidi Abdul , Hoque Kazi Enamul
Published: May 2024

Department heads play a critical role in executing school plans, particularly in adopting contemporary instructional methods, integrating technology, assessing student progress, and maintaining high standards of classroom interactions. They facilitate essential interactions within the classroom, spanning teacher-student, student–student, and student-content interactions, aligning with transformational leadership practices. This study explores the influence of department heads' transformational leadership on classroom interaction, mediating teachers' teaching experience in enhancing leadership capacity. Using a straightforward random sampling procedure, 374 teachers from 226 privately owned secondary schools were selected. Descriptive statistics were employed to represent the extent of department heads' engagement in transformational leadership practices. Findings indicate that teachers' role in clarifying activities and assignments to encourage classroom involvement received the highest average rating, emphasizing the importance of diverse instructional approaches. The study reveals a significant, positive influence of teachers' years of experience as a moderating factor in the relationship between department heads' transformational leadership and classroom interaction. A positive correlation was observed between student–teacher interactions and department heads' use of transformational leadership practices, with teachers' experience levels shaping these relationships. Notably, the study suggests that teachers' experience partially affects this phenomenon. The research concludes with recommendations for policymakers and educators to leverage their pedagogical expertise in fortifying the impact of school leadership on heightened student participation within the classroom.
The Spanish Familial Pancreatic Cancer Registry (PANGENFAM): a decade follow-up of individuals at high-risk for pancreatic cancer
Authors: Earl Julie , Fuentes Raquel , Sanchez María E. Castillo , de Paredes Ana García García , Muñoz María , Sanjuanbenito Alfonso , Lobo Eduardo , Caminoa Alejandra , Rodríguez Mercedes , Barreto Emma , López Jorge Villalón , Ruz-Caracuel Ignacio , Durán Sergio López , Olcina José Ramón Foruny , Sánchez Bárbara Luna , Páez Sonia Camaño , Torres Ana , Blázquez Javier , Sequeros Enrique Vázquez , Carrato Alfredo
Published: May 2024

The Spanish Familial Pancreatic Cancer Registry (PANGENFAM) was established in 2009 and aims to characterize the genotype and phenotype of familial pancreatic cancer (FPC). Furthermore, an early detection screening program for pancreatic ductal adenocarcinoma (PDAC) is provided to healthy high-risk individuals from FPC and hereditary pancreatic cancer families (first-degree relatives). This article describes our experience over the last 10 years in high-risk screening. Hereditary and familial pancreatic cancer families were identified through the oncology and gastroenterology units. High-risk individuals underwent annual screening with endoscopic ultrasound (EUS) and magnetic resonance (MRI) from age 40 or 10 years younger than the youngest affected family member. Results: PANGENFAM has enrolled 290 individuals from 143 families, including 52 PDAC cases and 238 high-risk individuals. All high-risk individuals eligible for screening were offered to enter the surveillance program, with 143 currently participating. Pancreatic abnormalities were detected in 94 individuals (median age 53 years (29–83), with common findings including cystic lesions and inhomogeneous parenchyma. Imaging test concordance was 66%. Surgical intervention was performed in 4 high-risk individuals following highly suspicious lesions detected by imaging. PANGENFAM is a valuable resource for science innovation, such as biobanking, with clinical and imaging data available for analysis. For high-risk families, it may offer a potential for early diagnosis. Collaboration with other national and international registries is needed to increase our understanding of the disease biology and to standardize criteria for inclusion and follow-up, optimizing cost-effectiveness and efficacy.
Physical Activity for Anxiety for Autistic People: A Systematic Review
Authors: Riis Kathryn , Samulski Brittany , Neely Kristina A. , Laverdure Patricia
Published: May 2024

Clinical anxiety is a common comorbidity in autistic people. Due to the prevalence of anxiety in the autism population and the adverse effects it causes, there is a critical need to develop effective interventions which address anxiety symptoms for autistic people. Therefore, the purpose of this systematic review was to examine the effectiveness of the use of physical activity as an intervention to reduce anxiety in autistic people. Three databases PubMed, PsychInfo, and Cochrane RCTs, were searched utilizing key terms. PRISMA systematic search procedures identified 44 studies meeting predetermined inclusion criteria. Participant characteristics, the type of physical activity performed, the nature of the physical activity program/delivery, anxiety-related outcomes, and research methodology was evaluated for each study. Each paper included was appraised and scored for risk of bias using Cochrane Handbook for Systematic Reviews of Interventions risk of bias tool. Titles and abstracts of 44 articles were reviewed and 8 articles met inclusion criteria which evaluated interventions. Evidence from 8 studies suggests that yoga, a community-based football program, an app-assisted walking program, group exercise programs, and horseback riding interventions reduced anxiety for autistic people. The studies included in this systematic review provide strong-to-moderate evidence that physical activity can reduce anxiety for autistic children and adults. However, additional research is needed to identify which mode of physical activity is most beneficial for anxiety reduction. Further, future research should evaluate frequency, duration, and intensity and their effects on anxiety for autistic people.
Effects of Motor Intervention Program on Academic Skills, Motor Skills and Social Skills in Children with Autism Spectrum Disorder
Authors: Hatipoğlu Özcan Gülsüm , Özer Dilara Fatoş , Pınar Salih
Published: May 2024

The aim of this study was to examine the effect of motor intervention program (MIP) on autistic index, pre-academic skills, motor skills and social skills of children with Autism Spectrum Disorder (ASD). The research group consisted of a total of 34 participants between the ages of 3–6, 17 in the control group (CG) and 17 in the experimental group (EG). EG participated in the motor intervention program for 60 min a day, 2 days a week for 12 weeks. In the study, the Gilliam Autistic Disorder Rating Scale-2-Turkish Version (GARS-2 TV), Peabody Motor Development Scale-2 (PMDS-2), Pre-Academic Skills Evaluation Form (PASAF) and Social Skills Evaluation System Preschool Teacher Form (SSRS-PTF) were used. The increase in all subtests and total scores of PASAF and posttest scores obtained from PMDS-2 were found to be higher in favor of the experimental group (p < 0.05). The decrease in the stereotype and social interaction scores of GARS-2 TV and the change in the cooperation, self-control and externalization sub-dimensions of SSRS-PTF were found to be statistically significant in favor of the EG group (p < 0.05). In conclusion, it was found that MIP applied to autistic children was effective on the development of motor skills, academic skills and social skills and decreased the level of autistic index. This result shows that MIP is an effective practice that provides a favorable environment for autistic young children to develop multiple skills.
Modelling Drug Delivery to the Small Airways: Optimization Using Response Surface Methodology
Authors: Min Hyunhong J. , Payne Stephen J. , Stride Eleanor P.
Published: May 2024

Aim

The aim of this in silico study was to investigate the effect of particle size, flow rate, and tidal volume on drug targeting to small airways in patients with mild COPD.

Method

Design of Experiments (DoE) was used with an in silico whole lung particle deposition model for bolus administration to investigate whether controlling inhalation can improve drug delivery to the small conducting airways. The range of particle aerodynamic diameters studied was 0.4 – 10 µm for flow rates between 100 – 2000 mL/s (i.e., low to very high), and tidal volumes between 40 – 1500 mL.

Results

The model accurately predicted the relationship between independent variables and lung deposition, as confirmed by comparison with published experimental data. It was found that large particles (~ 5 µm) require very low flow rate (~ 100 mL/s) and very small tidal volume (~ 110 mL) to target small conducting airways, whereas fine particles (~ 2 µm) achieve drug targeting in the region at a relatively higher flow rate (~ 500 mL/s) and similar tidal volume (~ 110 mL).

Conclusion

The simulation results indicated that controlling tidal volume and flow rate can achieve targeted delivery to the small airways (i.e., > 50% of emitted dose was predicted to deposit in the small airways), and the optimal parameters depend on the particle size. It is hoped that this finding could provide a means of improving drug targeting to the small conducting airways and improve prognosis in COPD management.
An algorithm based on quantum phase estimation for the identification of patterns
Authors: Ntalaperas Dimitris , Kalogeropoulos Andreas , Konofaos Nikos
Published: May 2024

The quantum phase estimation algorithm has been utilized by a variety of quantum algorithms, most notably Shor’s algorithm, to obtain information regarding the period of a function that is appropriately encoded into a unitary operator. In many cases, it is desired to estimate whether a specific state exhibits a certain pattern quickly. In this paper, we exhibit a methodology based on the QPE algorithm to identify certain patterns. In particular, starting from a properly encoded state, we demonstrate how to construct unitary operators whose eigenvectors correspond to states with proper diagonals. QPE will then output an eigenphase equal to zero with certainty for these states, thereby identifying this class of matrices. For partial matches, our algorithm, based on the tolerance threshold used, will show areas of high similarity, and it will outperform classical ones when the number of mismatches defined by the tolerance is significantly low when compared to the size of the diagonal.
A daily diary study on associations between school-based ethnic discrimination and school engagement
Authors: Civitillo Sauro , Jugert Philipp , Yip Tiffany , Lui Priscilla P. , Titzmann Peter F.
Published: May 2024

Being the target of discriminatory actions because of their ethnicity can lead ethnic minority students to disengage from school. Research has relied on cross-sectional survey data to show that students who experience more frequent discrimination are more likely to be disengaged from school (i.e., between-person associations). Less is known about whether ethnic discrimination is responsible for day-to-day dynamic fluctuations in school engagement (i.e., within-person associations). The current study focuses on within-person processes to assess how different types (i.e., overt- vs. subtle behavior) and sources (i.e., peer vs. teacher) of school-based ethnic discrimination are linked to behavioral, emotional, and cognitive school engagement at the same- and next-day levels. Participants were secondary school students of Turkish and Arab descent (N = 87, Mage = 15, 62% female) in an ethnically diverse area of north-west Germany. Using an interval-contingent design, participants completed a daily diary once a day over a two week-period using a smartphone application. At the within-person level, multilevel models indicated that more frequent discrimination from teachers was associated with lower levels of cognitive engagement on the same day and emotional engagement on the next day. We found little evidence for links between any discrimination types and sources and behavioral school engagement. This study documents the negative consequences of experiencing school-based ethnic discrimination on student school engagement.
The Potential of RainWater Harvesting Systems in Europe – Current State of Art and Future Perspectives
Authors: Wartalska Katarzyna , Grzegorzek Martyna , Bełcik Maciej , Wdowikowski Marcin , Kolanek Agnieszka , Niemierka Elżbieta , Jadwiszczak Piotr , Kaźmierczak Bartosz
Published: May 2024

Water scarcity and climate change led to changes in water management, especially in urban areas. RainWater Harvesting (RWH) is a promising technique that allows the collection and reuse of rainwater, as well as protecting sewage systems from overload. This article reviews the current state of RWH in Europe, including advantages, implementation, potential efficiency, usage requirements, quality, and treatment processes. The main findings include the importance of RWH as a sustainable water management technique, the historical background and renewed interest in RWH systems in recent years, the positive impact of RWH on reducing energy consumption and greenhouse gas emissions, the versatility of rainwater usage, and the potential cost savings and benefits in various regions. RWH systems are gaining popularity in Europe, particularly in Germany, Austria, and Switzerland. Climate change and precipitation patterns affect rainwater availability and quality. RWH can be used for various purposes, including drinking, but requires proper purification for health safety. It is also being implemented in new locations like airports and large buildings. RWH systems have a high potential to overcome undesired results of climate change. Among that, numerous aspects still need to be considered in the future that allow the application of RWH systems on a larger scale.
Microplastic Contamination of the Seawater in the Hamsilos Bay of the Southern Black Sea
Authors: Öztekin Ayşah , Üstün Funda , Bat Levent , Tabak Ahmet
Published: May 2024

The marine ecosystem is severely threatened by microplastics. The entire marine environment of the Black Sea is contaminated with both macro- and microplastics but the contamination of the water column with this pollutant has received less attention. This study aims to obtain data on the microplastic abundance, and vertical and temporal distribution of the microplastics in the water column of Hamsilos Bay which is a natural protected area, and an important area for fishery and tourism on the Sinop coast in the Black Sea. This study was carried out for 12 months in 7 stations. Microplastic abundance varied among 5.58 ± 6.12–8.12 ± 9.17 pieces/m3 in and 1.74 ± 0.80–21.07 ± 3.84 pieces/m3 in stations. The dominant microplastics were fibre by shape (73.92%), 1–2 mm (28.35%) by size class, and blue (37.98%) by colour. The synthetic polymers in the examined microplastic samples of this study were PET (47%), PE (34%), HDPE (10%), PVC (7%) and PS (2%). The results of this study show that the coastal area is widely contaminated with microplastics. Microplastic pollution is an increasingly significant environmental issue that poses a threat to the Black Sea which is particularly vulnerable to microplastic pollution. The region is an important ecological hotspot in the Black Sea and this study can provide valuable insights into the extent of microplastic pollution and will contribute to the literature on the evaluation of microplastic pollution in marine ecosystems. These types of investigations; efforts to address the environmental challenges facing the Black Sea, including the development of programs to reduce pollution, increase sustainability, and support the protection of the region's natural resources, are crucial to its continuity.
Crustal deformation from GNSS measurement and earthquake mechanism along Pieniny Klippen Belt, Southern Poland
Authors: Ansari Kutubuddin , Walo Janusz , Simanjuntak Andrean V. H. , Wezka Kinga
Published: May 2024

The dynamic geological features of the Pieniny Klippen Belt (PKB) in southern Poland are nowadays a focal point of researchers as it is recognised as an active zone of crustal discontinuity. In the present study, we employed long-term analysis of ground-based global navigation satellite system (GNSS) measurements (from 2004 to 2020) to probe the crustal deformation, strain rates, and rotational rates in the PKB unit and the surrounding region, i.e., Magura Nappe (MN) and Podhale Flysch (PF) units. Measured velocities from GNSS observables are modelled by the auto-regressive integrated moving average (ARIMA) method to comprehend the long-term tectonic deformation. Our results showed that the ARIMA-modelled velocity varied from ~ 0.15 to ~ 8.86 mm/yr, indicating about 8.71 mm/yr difference along all units. Such differences suggest that crustal slip along the active thrusts and folds is the major factor causing regional deformation. The strain rates in PKB are also varying from the western to the eastern part. The rotational rates in PKB show a counterclockwise (CCW) pattern similar to the strain rates. These patterns suggesting that the PKB was rotated in the CCW direction with a large angle during the Miocene period. Finally, we analysed the seismicity for a period from 2004 to 2020 by using Bayesian moment tensor inversion and multivariate Bayesian inversion. The Bayesian inversion was applied based on bootstrapping chain analysis to figure out the earthquake mechanism using moment tensor inversion for the mainshock that occurred in Poland on 20 July 2018. The inversion results for the 2018 earthquake resolved a thrusting mechanism with nodal plane-1 having a strike of 346°, dip of 32°, and rake of 92° and a nodal plane-2 with a strike of 163°, dip of 58°, and rake of 89°. Since the seismicity in the Poland region has experienced less significant earthquakes in the last century, it is reasonable to attribute this lower seismic activity to the correspondingly low slip rates discerned through geodetic monitoring efforts.
Conjugations of unitary operators, I
Authors: Mashreghi Javad , Ptak Marek , Ross William T.
Published: May 2024

If U is a unitary operator on a separable complex Hilbert space $$\mathcal {H}$$
H
, an application of the spectral theorem says there is a conjugation C on $$\mathcal {H}$$
H
(an antilinear, involutive, isometry on $$\mathcal {H}$$
H
) for which $$ C U C = U^{*}.$$

C
U
C
=

U

∗

.

In this paper, we fix a unitary operator U and describe all of the conjugations C which satisfy this property. As a consequence of our results, we show that a subspace is hyperinvariant for U if and only if it is invariant for any conjugation C for which $$CUC = U^{*}$$

C
U
C
=

U

∗

.
Is accumulation risk in cyber methodically underestimated?
Authors: Zeller Gabriela , Scherer Matthias
Published: May 2024

Many insurers have started to underwrite cyber in recent years. In parallel, they developed their first actuarial models to cope with this new type of risk. On the portfolio level, two major challenges hereby are the adequate modelling of the dependence structure among cyber losses and the lack of suitable data based on which the model is calibrated. The purpose of this article is to highlight the importance of taking a holistic approach to cyber. In particular, we argue that actuarial modelling should not be viewed stand-alone, but rather as an integral part of an interconnected value chain with other processes such as cyber-risk assessment and cyber-claims settlement. We illustrate that otherwise, i.e. if these data-collection processes are not aligned with the actuarial (dependence) model, naïve data collection necessarily leads to a dangerous underestimation of accumulation risk. We illustrate the detrimental effects on the assessment of the dependence structure and portfolio risk by using a simple mathematical model for dependence through common vulnerabilities. The study concludes by highlighting the practical implications for insurers.
Efficacy and Safety of Injectable Dulaglutide 1.5 mg Among Type 2 Diabetes Patients in Clinics at King Saud Medical City, Riyadh, Saudi Arabia
Authors: Albargawi Mashael Saad , Alharbi Rawan Naser , Alajlani Mohammad Abbas , Abdulaal Ibtihal Abdulwarith , Aldakhil Lina Othman
Published: May 2024

Introduction

Type 2 diabetes mellitus is the most common type of diabetes, characterized by varying degrees of insulin resistance and diminishing beta-cell function, which increases the risk of macrovascular and microvascular complications. Dulaglutide is a long-acting glucagon-like peptide-1 receptor agonist that is administered once weekly and approved for treating adults with type 2 diabetes mellitus. It can be used as a monotherapy or in addition to oral hypoglycemic or insulin therapy.

Aim

This study aims to provide information contributing to assessing the efficacy and safety of weekly 1.5 mg dulaglutide therapy in Saudi adult patients with type 2 diabetes mellitus.

Methods

A retrospective single-arm cohort study using a purposive sample to recruit type 2 diabetes mellitus patients on dulaglutide from endocrine and diabetic outpatient clinics in King Saud Medical City (N = 205). Data were collected from participants’ medical profiles and through the phone using interview questionnaires.

Results

Most participants were female and married; approximately 33% had had diabetes for more than 20 years, 41.4% of the sample had third-class obesity, and more than half had used dulaglutide for the last 1–2 years. With therapy, weight, body mass index, hemoglobin A1c, and fasting blood sugar were significantly improved after 6 and 12 months from baseline. The main side effects reported were nausea (52%) and fatigue (28%).

Conclusion

Dulaglutide is a safe and effective therapy that demonstrated favorable glycemic control and weight reduction in obese type 2 diabetes patients of Saudi origin.
Economic impact of waste from food, water, and agriculture in Nigeria: challenges, implications, and applications—a review
Authors: Kolawole Ibiwumi Damaris , Kolawole Grace Olayemi , Sanni-manuel Bukola Abigail , Kolawole Shola Kolade , Ewansiha Joel Uyi , Kolawole Victor Are , Kolawole Funsho Olaitan
Published: May 2024

The surge in Nigeria's population has led to heightened demands for food, clean water, and agricultural products, resulting in a significant increase in waste generation. Nigeria ranks among the top countries globally in terms of waste production, particularly from food, water, and agriculture. Unfortunately, the management of these vast quantities of waste is often inadequate, leading to environmental pollution, disease, and heightened CO2 emissions. While reducing such waste is important, completely stopping waste generation from food, water, and agriculture is impossible. Therefore, it becomes imperative to adopt eco-friendly and cost-effective approaches to handling this waste, including collection, conversion, treatment, recycling, and reuse. Effectively managing waste can mitigate pollution and its adverse impacts on public health. This review delves into the environmental, economic, and health challenges associated with the generation of waste from food, water, and agriculture in Nigeria. It highlights the importance of implementing sustainable practices for waste treatment, conversion, reuse, and application. By harnessing these waste materials effectively, Nigeria stands to reap significant economic benefits while simultaneously safeguarding the environment from pollution.
Mobilizing Teachers
Authors: Chambers-Ju Christopher
Published: May 2024

The political participation of public school teachers in new democracies has generated heated debates. In some countries, teacher strikes shutter schools for months each year; in others, teachers' unions have become powerful political machines and have even formed new political parties. To explain these contrasts, Mobilizing Teachers delves into changes in education politics and the labor movement. Christopher Chambers-Ju argues that union organizations fundamentally shape teacher mobilization, with far-reaching implications for politics and policy. With detailed case studies of Argentina, Colombia, and Mexico, this book is the first comparative analysis of teacher politics in Latin America. Drawing on extensive field research and multiple sources of data, it enriches theoretical perspectives in political science and sociology on the interplay between protests, electoral mobilization, and party alliances. This title is part of the Flip it Open Programme and may also be available Open Access. Check our website Cambridge Core for details.
Keorapetse Kgositsile and the Black Arts Movement
Authors: Phalafala Uhuru Portia
Published: May 2024

Presents a new approach to studying the radicalism of Africa and its diaspora and makes a major contribution to the histories of Black lives, gender studies, jazz studies, politics, and creativity.
Experiments with a Dark Pedagogy: Learning from/through Temporality, Climate Change and Species Extinction (…and Ghosts)
Authors: Jukes Scott , Riley Kathryn
Published: May 2024

In this article, we experiment with a form of dark pedagogy, a pedagogy that confronts haunting pasts∼presents∼futures in environmental education. We offer a conceptualisation of ghosts that enables us to creatively explore the duration of things and consider the relationality of time. We examine this through two situated contexts, engaging with entangled, yet differentiated, socioecological issues. The first issue involves the cascading impacts of climate change on the Australian Alps, including intensifying bushfires and threats to the iconic snow gum. The second issue involves the reordering of human/animal relations through processes of settler colonialism that continue to transform land into a commodity, with a significant cultural and material consequence of such colonial harm resulting in the extermination of free-ranging bison herds in the Canadian prairies. Both are unique issues, but both involve impacts of colonisation, loss and natural-cultural hegemony. The dark elements of these Place-specific stories involve noticing and confronting loss and related injustices. In our case, we diffract such confrontations by thinking through these challenging issues and working towards ethical ways of living and learning. In this article, we (re)member ghosts and ponder practices for fostering anticolonial response-abilities and affirmative human/Earth futures.
Towards the understanding of convective dissolution in confined porous media: thin bead pack experiments, two-dimensional direct numerical simulations and physical models
Authors: De Paoli Marco , Howland Christopher J. , Verzicco Roberto , Lohse Detlef
Published: May 2024

We consider the process of convective dissolution in a homogeneous and isotropic porous medium. The flow is unstable due to the presence of a solute that induces a density difference responsible for driving the flow. The mixing dynamics is thus driven by a Rayleigh–Taylor instability at the pore scale. We investigate the flow at the scale of the pores using Hele-Shaw type experiment with bead packs, two-dimensional direct numerical simulations and physical models. Experiments and simulations have been specifically designed to mimic the same flow conditions, namely matching porosities, high Schmidt numbers and linear dependency of fluid density with solute concentration. In addition, the solid obstacles of the medium are impermeable to fluid and solute. We characterise the evolution of the flow via the mixing length, which quantifies the extension of the mixing region and grows linearly in time. The flow structure, analysed via the centreline mean wavelength, is observed to grow in agreement with theoretical predictions. Finally, we analyse the dissolution dynamics of the system, quantified through the mean scalar dissipation, and three mixing regimes are observed. Initially, the evolution is controlled by diffusion, which produces solute mixing across the initial horizontal interface. Then, when the interfacial diffusive layer is sufficiently thick, it becomes unstable, forming finger-like structures and driving the system into a convection-dominated phase. Finally, when the fingers have grown sufficiently to touch the horizontal boundaries of the domain, the mixing reduces dramatically due to the absence of fresh unmixed fluid. With the aid of simple physical models, we explain the physics of the results obtained numerically and experimentally. The solute evolution presents a self-similar behaviour, and it is controlled by different length scales in each stage of the mixing process, namely the length scale of diffusion, the pore size and the domain height.
Stability of Stuart vortices in rotating stratified fluids
Authors: Hattori Yuji , Hirota Makoto
Published: May 2024

The linear stability of the Stuart vortices, which is a model of arrays of vortices often observed in the atmosphere and the oceans, in rotating stratified fluids is investigated by local and modal stability analysis. As in the case of the two-dimensional (2-D) Taylor–Green vortices, five types of instability appear in general: the pure-hyperbolic instability, the strato-hyperbolic instability, the rotational-hyperbolic instability, the centrifugal instability and the elliptic instability. The condition for each instability and the estimate of the growth rate derived by Hattori & Hirota (J. Fluid Mech., vol. 967, 2023, A32) are shown to also be useful for the Stuart vortices, which supports their applicability to general flows. The properties of each instability depend on stratification and rotation in a way similar to the case of the 2-D Taylor–Green vortices. For the Stuart vortices, however, the centrifugal instability and the elliptic instability become more dominant than the three hyperbolic instabilities in comparison to the 2-D Taylor–Green vortices; this is explained by the larger ratios of the maximum vorticity and the strain rate at the elliptic stagnation points to the strain rate at the hyperbolic stagnation points. Direct correspondence between the modal and local stability results is further established by comparing unstable modes to solutions to the local stability equations; this is useful for identifying the types of modes since the mechanism of instability is readily known in the local stability analysis. This helps us to discover the modes of the ring-type elliptic instability, which have been predicted only theoretically.
Divergent Richtmyer–Meshkov instability under different shock strengths
Authors: Ding Juchun , Zhang Duo , Luo Xisheng
Published: May 2024

Richtmyer–Meshkov (RM) instability at a single-mode interface impacted by a cylindrical divergent shock with low to moderate Mach numbers is investigated experimentally. The motion of an unperturbed interface is first examined to obtain the background flow. The shocked interface moves uniformly at the early stage, but later decelerates. The stronger the incident shock, the larger the interface deceleration, which is reasonably predicted by a one-dimensional model considering the effect of postshock non-uniformity. Such a deceleration greatly inhibits the growths of harmonics of an initially perturbed interface and, consequently, the divergent RM instability presents very weak nonlinearity from early to late stages. Particularly, higher-Mach-number cases present weaker nonlinearity due to larger deceleration there. This abnormal linear growth regime is reported for the first time. Benefiting from this, the incompressible linear model holds validity at all stages of divergent RM instability. It is also found that compressibility inhibits the initial growth rate, but produces a weak influence on the subsequent instability growth.
Processing and production of clitics in Udi and European Portuguese: Testing a processing account of an extension of the suffixing preference
Authors: Harris Alice C. , Samuel Arthur G.
Published: May 2024

In our paper testing the Cutler–Hawkins hypothesis that suffixes are easier to process than prefixes (Harris & Samuel 2025), we report little experimental support for the hypothesis. Several sources treat clitics as being similar to affixes (e.g. Himmelmann 2014, Asao 2015), and some argue that there is a parallel preference for enclitics over proclitics (Cysouw 2005, Dryer 2017). On this basis, we test an extension of the Cutler–Hawkins hypothesis to clitics because if true, that too could explain the suffixing preference (as well as the putative enclitic preference). Cutler et al. (1985) also state a hypothesis about the processing of infixes. Udi provides an excellent language for testing both hypotheses, since each person clitic in this language can occur before the verb, after the verb, between morphemes of the verb or inside the verbal root, under certain circumstances (Harris 2002). Although European Portuguese does not place clitics inside roots, it utilizes the other three placements. We have conducted three experiments on each language. The results demonstrate that an explanation for either the suffixing preference or the putative enclitic preference is unlikely to be grounded in the processing factors suggested by Cutler & Hawkins.
The psycholinguistics of shining-through effects in translation: cross-linguistic structural priming or serial lexical co-activation?
Authors: Jacob Gunnar , Schaeffer Moritz Jonas , Oster Katharina , Hansen-Schirra Silvia
Published: May 2024

The manuscript explores the psycholinguistic processes responsible for cross-linguistic influence in translation. In two experimental studies with professional translators-in-training, we investigate the psycholinguistic foundations of shining-through effects in translated texts, i.e., cases where the grammatical structure of a source sentence leaves traces in the translated sentence. Experiment 1 reports the results from a translation task investigating the influence of the grammatical structure of the source sentence on structural choices for its translation. The results showed a significant influence of source sentence structure, which gradually decreased with increasing translation competence scores. In Experiment 2, we investigated to what extent the effect of source structure influence found in Experiment 1 can be accounted for through cross-linguistic structural priming. In a cross-linguistic priming experiment in which the source sentences from Experiment 1 were used as primes, participants showed no evidence of structural priming. A cross-experiment comparison revealed significant source sentence influence in the translation task, but no such effect in the priming task, for matched sets of sentences. Our results cast doubt on the claim that shining-through effects in translation are caused by cross-linguistic structural priming. We suggest an alternative account which instead explains structural cross-linguistic influence in translation through serial lexical co-activation.
An effective point cloud registration method for three-dimensional reconstruction of pressure piping
Authors: Zhang Yulong , Guan Enguang , Wang Baoyu , Zhao Yanzheng
Published: May 2024

At present, industrial scenes with sparse features and weak textures are widely encountered, and the three-dimensional reconstruction of such scenes is a recognized problem. Pressure pipelines have a wide range of applications in fields such as petroleum engineering, chemical engineering, and hydropower station engineering. However, there is no mature solution for the three-dimensional reconstruction of pressure pipes. The main reason is that the typical scenes in which pressure pipes are found also have relatively few features and textures. Traditional three-dimensional reconstruction algorithms based on feature extraction are largely ineffective for such scenes that are lacking in features. In view of the above problems, this paper proposes an improved interframe registration algorithm based on point cloud fitting with cylinder axis vector constraints. By incorporating geometric feature parameters of a cylindrical pressure pipeline, specifically the axis vector of the cylinder, to constrain the traditional iterative closest point algorithm, the accuracy of point cloud registration can be improved in scenarios lacking features and textures, and some environmental uncertainties can be overcome. Finally, using actual laser point cloud data collected from pressure pipelines, the proposed fitting-based point cloud registration algorithm with cylinder axis vector constraints is tested. The experimental results show that under the same conditions, compared with other open-source point cloud registration algorithms, the proposed method can achieve higher registration accuracy. Moreover, integrating this algorithm into an open-source three-dimensional reconstruction algorithm framework can lead to better reconstruction results.
An operationalization framework for lifecycle health technology assessment: a Health Technology Assessment International Global Policy Forum Task Force report
Authors: Pichler Franz B. , Boysen Meindert , Mittmann Nicole , Gilardino Ramiro , Bruce Andrew , Bond Kenneth , Vreman Rick A. , Largeron Nathalie , Banhazi Judit , Ollendorf Daniel A. , Jain Mohit , Upadhyaya Sheela , Goettsch Wim G.
Published: May 2024

Operationalization guidance is needed to support health technology assessment (HTA) bodies considering implementing lifecycle HTA (LC-HTA) approaches. The 2022 Health Technology Assessment International (HTAi) Global Policy Forum (GPF) established a Task Force to develop a position paper on LC-HTA. In its first paper, the Task Force established a definition and framework for LC-HTA in order to tailor it to specific decision problems. This second paper focused on the provision of practical operational guidance to implement LC-HTA. Detailed descriptions of the three LC-HTA operational steps are provided (defining the decision problem, sequencing of HTA activities, and developing optimization criteria) and accompanied by worked examples and an operationalization checklist with 20 different questions for HTA bodies to consider when developing an LC-HTA approach. The questions were designed to be applicable across different types of HTA and scenarios, and require adaptation to local jurisdictions, remits, and context.
Removing a colonial anachronism - The decolonization of heritage in the 1970s Hong Kong
Authors: Fok Yeung Yeung
Published: May 2024

This article explores the decolonization of heritage politics in 1970s Hong Kong. It firstly revisits recent scholars’ work on Hong Kong heritage politics and the transformation of Hong Kong’s cultural identity. It shows how people’s perceptions of their colonial heritage and history in Hong Kong have changed since the 1970s. Secondly, it outlines the city’s cultural heritage policy framework after the 1967 Riots, inspired by the Cultural Revolution. It analyses how the colonial government intentionally rebranded the city’s colonial heritage as an anachronism to justify its new narrative of Hong Kong and its cultural identity in the 1970s. It also employs the demolition of the former Kowloon Railway Station building in the 1970s as a case study to discuss how the colonial government decolonized local colonial structures through its new cultural heritage policy approach after the Riots. Finally, by employing the case study of the demolished Central Star Ferry Pier in the 2000s, this article argues there was a change in people’s perceptions of the city’s colonial history in the early postcolonial period of Hong Kong. A more active notion of Hong Kong’s cultural identity is also being articulated in the uncertain future due to the city’s recent rapid political and social changes influenced by the mainland authority.
Investigating the cause of a 2021 winter wave of COVID-19 in a border region in eastern Germany: a mixed-methods study, August to November 2021
Authors: Yi Buqing , Patrasová Eva , Šimůnková Lenka , Rost Fabian , Winkler Sylke , Laubner Alexa , Reinhardt Susanne , Dahl Andreas , Dalpke Alexander H.
Published: May 2024

It is so far unclear how the COVID-19 winter waves started and what should be done to prevent possible future waves. In this study, we deciphered the dynamic course of a winter wave in 2021 in Saxony, a state in Eastern Germany neighbouring the Czech Republic and Poland. The study was carried out through the integration of multiple virus genomic epidemiology approaches to track transmission chains, identify emerging variants and investigate dynamic changes in transmission clusters. For identified local variants of interest, functional evaluations were performed. Multiple long-lasting community transmission clusters have been identified acting as driving force for the winter wave 2021. Analysis of the dynamic courses of two representative clusters indicated a similar transmission pattern. However, the transmission cluster caused by a locally occurring new Delta variant AY.36.1 showed a distinct transmission pattern, and functional analyses revealed a replication advantage of it. This study indicated that long-lasting community transmission clusters starting since early autumn caused by imported or locally occurring variants all contributed to the development of the 2021 winter wave. The information we achieved might help future pandemic prevention.
Coherent Seismic Anisotropy Pattern Across Southern Africa Revealed by Shear Wave Splitting Measurements
Authors: Andriampenomanana Fenitra , Nyblade Andrew , Durrheim Raymond , van der Meijde Mark , Paulssen Hanneke , Kwadiba Motsamai , Ntibinyane Onkgopotse , Titus Nortin , Sitali Mako
Published: May 2024

We report new PKS, SKS, and SKKS splitting measurements for 88 seismic stations in Namibia, Botswana, South Africa, and Mozambique. When combined with measurements from previous studies, the ensemble of measurements shows a fairly uniform NNE to NE (∼41° on average) fast‐polarization direction (ϕ) and delay time (δt) (∼0.7 s on average) across the entire southern African subcontinent. It is difficult to attribute the NNE‐NE ϕ direction to just one source of anisotropy either within the lithospheric or sublithospheric mantle. We instead propose the observed anisotropy pattern could result from a combination of several sources that together give rise to a pervasive NNE‐NE ϕ direction; (a) fossil anisotropy in the lithospheric mantle resulting from the Neoproterozoic collision of the Congo and Kalahari cratons to form the Damara Belt, (b) movement of the African plate over the asthenosphere, and (c) flow in the upper mantle induced by the African Superplume. In addition, a contribution from anisotropy in the lowermost mantle in the vicinity of the African large low shear velocity province cannot be ruled out.
Morpho‐Tectonic Evolution of the Southern Apennines and Calabrian Arc: Insights From Pollino Range and Surrounding Extensional Intermontane Basins
Authors: Clementucci R. , Lanari R. , Faccenna C. , Crosetto S. , Reitano R. , Zoppis G. , Ballato P.
Published: May 2024

The evolution of topography in forearc regions results from the complex interplay of crustal and mantle processes. The Southern Apennines represent a well‐studied forearc region that experienced several tectonic phases, initially marked by compressional deformation followed by extension and large‐scale uplift. We present a new structural, geomorphic and fluvial analysis of the Pollino Massif and surrounding intermontane basins (Mercure, Campotenese and Castrovillari) to unravel their evolution since the Pliocene. We constrain multiple tectonic transport directions, evolution of the drainage, and magnitude and timing of long‐term incision following base level falls. Two sets of knickpoints suggest two phases of base level lowering and allow to estimate ∼500 m of long‐term uplift (late Pleistocene), as observed in the Sila Massif. On a smaller spatial scale, the evolution and formation of topographic relief, sedimentation, and opening of intermontane basins is strongly controlled by the recent increase in rock uplift rate and fault activity. At the regional scale, an along‐strike, long‐wavelength uplift pattern from north to south can be explained by progressive lateral slab tearing and inflow of asthenospheric mantle beneath Pollino and Sila, which in turn may have promoted extensional tectonics. The lower uplift of Le Serre Massif may be explained as result of weak plate coupling due to narrowing of the Calabrian slab. The onset of uplift in the Pollino Massif, ranging from 400 to 800 ka, is consistent with that one proposed in the southern Calabrian forearc, suggesting a possible synchronism of uplift, and lateral tearing of the Calabrian slab.