Understanding the mechanisms behind the remote triggering of landslides by seismic waves at micro-strain amplitude is essential for quantifying seismic hazards. Granular materials provide a relevant model system to investigate landslides within the unjamming transition framework, from solid to liquid states. Furthermore, recent laboratory experiments have revealed that ultrasound-induced granular avalanches can be related to a reduction in the interparticle friction through shear acoustic lubrication of the contacts. However, investigating slip at the scale of grain contacts within an optically opaque granular medium remains a challenging issue. Here, we propose an original coupling model and numerically investigate two-dimensional dense granular flows triggered by basal acoustic waves. We model the triggering dynamics at two separated time scales – one for grain motion (milliseconds) and the other for ultrasound (10 ${\rm \mu} {\rm s}$) – relying on the computation of vibrational modes with a discrete element method through the reduction of the local friction. We show that ultrasound predominantly propagates through the strong-force chains, while the ultrasound-induced decrease of interparticle friction occurs in the weak contact forces perpendicular to the strong-force chains. This interparticle friction reduction initiates local rearrangements at the grain scale that eventually lead to a continuous flow through a percolation process at the macroscopic scale – with a delay depending on the proximity to the failure. Consistent with experiments, we show that ultrasound-induced flow appears more uniform in space than pure gravity-driven flow, indicating the role of an effective temperature by ultrasonic vibration.

This study identifies two previously unrecognised screech modes in non-axisymmetric jets. Spectral proper orthogonal decomposition (SPOD) of ultra-high-speed schlieren images reveals a bi-axial flapping mode in a rectangular jet and a quasi-helical mode in an elliptical jet. To educe the complex three-dimensional structure of these new modes, SPOD is performed on datasets from different viewing perspectives, produced by rotating the nozzle with respect to the schlieren path to an azimuthal angle $\theta$. The bi-axial flapping mode is strongly antisymmetric from any perspective. However, the SPOD eigenvalue at the screech frequency ($\lambda _s$) varies with $\theta$ and the axial distance of the SPOD domain from the nozzle lip. This mode most closely resembles a flapping mode in the minor-axis plane close to the nozzle lip and a wagging mode in the major-axis plane further downstream. This transition from flapping to wagging at the same frequency correlates with the axis switching defined by the shock-cell structure in the mean flow. The quasi-helical mode in the elliptical jet is characterised by an antisymmetric structure present in the SPOD spatial modes whose eigenvalue $\lambda _s$ is insensitive to both $\theta$ and the axial domain. These findings indicate that the spatial evolution of the mean flow in non-axisymmetric jets may allow them to support a range of additional screech modes that differ significantly from those supported by the original three-dimensional shape of the jet.

This paper asserts that critiques of political science for neglecting Indigenous politics highlight a critical gap that risks overlooking significant conceptual and practical innovations. It emphasizes how Indigenous autonomy claims challenge traditional notions of sovereignty. Scholars of Indigenous politics in Latin America, publishing in area studies journals, provide essential insights into these autonomy claims and contribute valuable perspectives to the discipline. We identify rigorous scholarly work in English language, peer-reviewed journals exploring Indigenous autonomy, conceptualizing it as a multifaceted notion that encompasses political visions, practices, and social movement agendas. Through a comprehensive meta-analysis of literature in Latin American area studies, we argue that this field offers four fundamental insights. First, Indigenous peoples deploy diverse strategies to assert their rights, positioning themselves as active citizens and political agents rather than passive groups. Second, the emergence of multicultural institutions that integrate individual and collective rights is fundamentally reshaping politics and citizenship, leading to innovative governance structures. Third, accumulation by dispossession remains a crucial driver of wealth creation, severely undermining Indigenous autonomy and degrading their environments. Finally, a renewed emphasis on Indigenous territorial autonomy decisively challenges conventional views of state sovereignty, as Indigenous peoples assert territorial and nonterritorial rights.

Biallelic pathogenic variants in the inorganic pyrophosphatase 2 (PPA2) gene are a rare but established cause of sudden infant death, which may be precipitated by a pyrexial or viral illness. It has also been associated with sudden death secondary to alcohol ingestion in young adults. We describe the case of a thirteen-month-old female who presented following out-of- hospital cardiac arrest and was subsequently diagnosed with compound, heterozygous pathogenic variants of PPA2. She survived this episode and made excellent neurological recovery despite her prolonged out-of-hospital resuscitation. This case describes her initial presentation, consideration of PPA2-related cardiac arrest in the differential diagnosis, and the subsequent secondary preventative strategies. These included insertion of an implantable cardiac defibrillator, avoidance of alcohol in her medication preparations and administration of childhood vaccinations in a hospital environment due to risk of pyrexia-induced arrhythmias.

In this paper, we examine the effect of the “Fresh From Florida” marketing program on the preferences of consumers located in geographically distant regions. We administered a choice experiment to consumers from the Northeastern region of the US, the Eastern region of Canada, and from Florida. Our findings show that the logo recall rate is significant for out-of-state consumers. While the WTP for the “Fresh from Florida” attribute is not statistically significant for Northeastern US respondents, logo recall positively influences the WTP. Logo recall positively affects WTP in Canada, but only for respondents with positive or neutral opinions of Florida.

Artificial intelligence in higher education has expanded worldwide with the growth of AI technologies. The emergent applications of artificial intelligence in higher education (AIEd) in course preparation, delivery, and administration as well as in learning assistants and prediction for the sake of learners are widely considered important innovations that can change education worldwide. The Armenian case was examined via a survey that was conducted at the country’s leading universities to investigate whether and how faculty use AIEd. Although the results indicate that many Armenian teaching faculty use AIEd in narrow capacities and acknowledge the potential usefulness of AIEd in the practical administration of Armenia’s higher education, the use of AIEd is not deep.

The rarely examined committees of the Senate of Canada offer interesting insights into the Senate as a whole, particularly following the 2016 reforms to the institution. While discussion of House of Commons committees often emphasizes them as separate and different from the larger chamber, Senate committees mirror the dynamics of the overall Senate; looking at them tells us a lot about the Senate itself. Through qualitative research and in-depth interviews about committees with senators, this article finds both contrast and continuity in the Senate and its committees.

What determines why some protest events last only a single day while others can stretch over multiple days? This study presents the first cross-national quantitative analysis of the factors that shape protest event duration. This study argues that protest event duration is the function of factors that increase momentum (e.g. protest size, location and participants) while also examining whether repression attenuates such momentum. Using the Armed Conflict Location Event Data, this study employs two multilevel statistical methods to examine the factors that matter. First, the study examines the day-by-day factors that shape whether a protest will continue the next day. Second, the study examines the overall duration of events. The analyses find strong support that protests in capitals and urban areas, as well as protests featuring students, labour unions and professional organizations, last longer, while repression does truncate events.

Although criminal trials are primarily designed to repress individual acts, a new role has emerged in the era of French jihadist trials. They have transformed into a ‘forum’ giving voice to different actors to comprehend the phenomenon in all its complexity, as in truth commissions: defendants presented their path to radicalization, victims related their trauma, experts situated jihadism in a socio-political context, and security forces disclosed their work. Aligned with forms of justice, which seeks to return control ‘stolen’ by professionals to the parties involved, they also place significant emphasis on emotions, in contrast to the cold, impersonal authority of conventional law, which relies on legal rhetoric, justified to maintain neutrality and impartiality.

Employing an ethnographic approach, we examine this trial as an experiment that challenges the way justice is administered after mass violence. Our premise is that this judicial experiment can propose a new paradigm for the prosecution of mass crimes, in line with contemporary new mechanisms that more effectively incorporate restorative objectives. It could serve as inspiration for procedures in international courts by attributing space to the direct participation of both the victims and the defendants, basing the procedure on narrative rather than strict legalistic rules, and engaging with social science expertise.

Real-time systems need to be built out of tasks for which the worst-case execution time is known. To enable accurate estimates of worst-case execution time, some researchers propose to build processors that simplify that analysis. These architectures are called precision-timed machines or time-predictable architectures. However, what does this term mean? This paper explores the meaning of time predictability and how it can be quantified. We show that time predictability is hard to quantify. Rather, the worst-case performance as the combination of a processor, a compiler, and a worst-case execution time analysis tool is an important property in the context of real-time systems. Note that the actual software has implications as well on the worst-case performance. We propose to define a standard set of benchmark programs that can be used to evaluate a time-predictable processor, a compiler, and a worst-case execution time analysis tool. We define worst-case performance as the geometric mean of worst-case execution time bounds on a standard set of benchmark programs.