Witness testimony in a judicial setting is commonly viewed as a form of evidence—a means to inform a judicial body of relevant facts in a given case. In this perspective, witnesses are merely instrumental to the process of adjudication. While this viewpoint provides a useful account of how we think of witness testimony in courts today, it is illsuited to the way witnesses and their role were perceived in the ancient world. Drawing on a cross-cultural analysis of ancient and late antique texts, the article recovers a different perception of the role of witnesses that once prevailed in the societies that gave rise to Western civilization. According to this alternate view, witnesses were not seen as passive providers of information but rather as active agents with the power to adjudicate—a role that we would now associate with judges. The article offers a new conceptualization of this historical transformation, outlining two paradigms that can help us critically examine the implied assumptions about the role of witnesses in adjudication: “the instrumental paradigm,” which is dominant in contemporary thought, and “the authoritative paradigm,” emerging from ancient texts, wherein witnesses held a far more authoritative role than the contemporary understanding suggest. The study argues that the instrumental paradigm reflects a radical transformation in the meanings of testimony and witness as legal concepts—a shift that marks an unexamined revolution in the history of legal thought.

The Anti-Extradition Bill Movement in 2019 sparked the most radical mass protests seen in Hong Kong since the transfer of sovereignty. Scholars have proposed various explanations for the radicalization of the protests, as well as for the mass support for this radicalization across various sectors of society. However, economic grievances have been relatively downplayed in attempts to understand the radical protests. Using data from a survey conducted during the suspension of the movement in 2020 (N = 1,574), this study examines the relationship between economic grievances and support for the protests. Through mediation analysis, the findings show that individuals who perceived themselves as belonging to a lower class tended to have a diminished sense of social mobility and equality. These negative perceptions contributed to concerns about the activities of Mainland Chinese individuals and the use of public resources. Thus, these particular economic grievances were found to be positively associated with support for the 2019 movement.

Plasma-terminating disruptions represent a critical outstanding issue for reactor-relevant tokamaks. ITER will use shattered pellet injection (SPI) as its disruption mitigation system to reduce heat loads, vessel forces and to suppress the formation of runaway electrons. In this paper we demonstrate that reduced kinetic modelling of SPI is capable of capturing the major experimental trends in ASDEX Upgrade SPI experiments, such as dependence of the radiated energy fraction on neon content, or the current quench dynamics. Simulations are also consistent with the experimental observation of no runaway electron generation with neon and mixed deuterium–neon pellet composition. We also show that statistical variations in the fragmentation process only have a notable impact on the disruption dynamics at intermediate neon doping, as was observed in experiments.

The essay examines the lessons from the international intervention in Afghanistan, highlighting the failures of externally imposed state building, including neglect of local governance structures and prioritizing donor interests over Afghan ownership. The international peace- and state-building intervention in Afghanistan, which spanned two decades, culminated in the abrupt withdrawal of U.S. troops in 2021, leading to the Taliban’s swift resurgence. This event has sparked a critical examination of the strategies employed by NATO and allied nations during their engagement in Afghanistan. This essay aims to distill seven key lessons from this intervention, emphasizing the need for future peacebuilders to adapt their approaches to better align with local contexts and realities. The analysis highlights the failures of liberal peacebuilding, the importance of local ownership, the necessity of effective and legitimate institutions, and the detrimental impact of corruption. Furthermore, it underscores the significance of coherence among international actors and the need for a nuanced understanding of regional dynamics. By reflecting on these lessons, the essay seeks to provide actionable insights for future international interventions in fragile and conflict-affected states.

This paper reports a study that investigated how first language (L1) reading comprehension, L1 low-level skills, working memory capacity, and reading anxiety are related to the accuracy of responses and completion time in a second language (L2) reading test. The data obtained from Hungarian secondary school learners of English showed that anxiety related to processing the L2 reading text, time pressure, and the response tasks as well as L1 reading comprehension scores and backward digit span were significant predictors of L2 reading scores. L1 low-level skills did not contribute significantly to L2 reading accuracy. Higher levels of reading-related anxiety were associated with slower reading, and L2 learners with concurrently lower levels of L1 and L2 reading ability needed more time to complete the reading test. These findings highlight that L2 reading tests should be flexibly timed so that everyone, including test takers with literacy-related difficulties such as dyslexia, can demonstrate their abilities.

Exoskeletons that make running easier could increase users’ physical activity levels and provide related health benefits. In this paper, we present the design of a portable, powered ankle exoskeleton that assists running and uses lightweight and compact twisted string actuators. It has limited durability at this stage of development, but preliminary results of its power to mass density and potential for reducing the metabolic cost of running are promising. The exoskeleton can provide high peak power of 700 W per leg, 7 times more than prior twisted-string devices, and high peak torques of 43 Nm. Kinetostatic and dynamic models were used to select mass-optimal components, producing a device that weighs 1.8 kg per leg and 2.0 kg in a backpack. We performed preliminary tests on a single participant to evaluate the exoskeleton performance during both treadmill running and outdoor running. The exoskeleton reduced metabolic energy use by 10.8% during treadmill running tests and reduced cost of transport by 7.7% during outdoor running tests compared to running without the device. Unfortunately, the twisted string wore out quickly, lasting an average of 4 min 50 s before breaking. This exoskeleton shows promise for making running easier if string life challenges can be addressed.

The secrecy of intelligence institutions might give the impression that intelligence is an ethics-free zone, but this is not the case. In The Ethics of National Security Intelligence Institutions, Adam Henschke, Seumas Miller, Andrew Alexandra, Patrick Walsh, and Roger Bradbury examine the ways that liberal democracies have come to rely on intelligence institutions for effective decision-making and look at the best ways to limit these institutions’ power and constrain the abuses they have the potential to cause. In contrast, the value of Amy Zegart’s and Miah Hammond-Errey’s research, in their respective books, Spies, Lies, and Algorithms: The History and Future of American Intelligence and Big Data, Emerging Technologies and Intelligence: National Security Disrupted, is the access each of them provides to the thoughts and opinions of the intelligence practitioners working in these secretive institutions. What emerges is a consensus that the fundamental moral purpose of intelligence institutions should be truth telling. In other words, intelligence should be a rigorous epistemic activity that seeks to improve decision-makers’ understanding of a rapidly changing world. Moreover, a key ethical challenge for intelligence practitioners in liberal democracies is how to do their jobs effectively in a way that does not undermine public trust. Measures recommended include better oversight and accountability mechanisms, adoption of a ‘risk of transparency’ principle, and greater understanding of and respect for privacy rights.

We present a simulation study based on a cognitive architecture that unifies various early language acquisition phenomena in laboratory and naturalistic settings. The model adaptively learns procedures through trial-and-error using general-purpose operators, guided by learned contextual associations to optimise future performance. For laboratory-based studies, simulated preferential focusing explains the delayed behavioural onset of statistical learning and the possible age-related decrease in algebraic processing. These findings suggest a link to continuous, implicit learning rather than explicit strategy acquisition. Moreover, procedures are not static but can evolve over time, and multiple plausible procedures may emerge for a given task. Besides, the same model provides a proof-of-concept for word-level phonological learning from naturalistic infant-directed speech, demonstrating how age-related processing efficiency may influence learning trajectories implicated in typical and atypical early language development. Furthermore, the artile discusses the broader implications for modelling other aspects of real-world language acquisition.

The brachyurans Tehuacana tehuacana Stenzel, 1944 and Dromilites americana Rathbun, 1935 have historically been difficult to place in families. A reevaluation of type and referred material from several institutions suggests that the two species are referrable to separate genera in Palaeoxanthopsidae. Hyphalocarcinus new genus is erected to accommodate H. americanus new combination, and Tehuacana remains a distinct genus. Palaeoxanthopsidae evolved and radiated in the Atlantic Ocean, ranging from Late Cretaceous (Maastrichtian) to early Eocene (Ypresian) in age. This work adds to the known diversity of Palaeoxanthopsidae and demonstrates that the family survived and thrived in the Atlantic Ocean in the wake of the end-Cretaceous extinction. Differential preservation of specimens must be evaluated carefully when placing superficially similar taxa at the family, genus, and species level.

UUID: http://zoobank.org/73da26c7-aff7-4abe-8aa5-768944bbf6ee

Static analysis is an essential component of many modern software development tools. Unfortunately, the ever-increasing complexity of static analyzers makes their coding error-prone. Even analysis tools based on rigorous mathematical techniques, such as abstract interpretation, are not immune to bugs. Ensuring the correctness and reliability of software analyzers is critical if they are to be inserted in production compilers and development environments. While compiler validation has seen notable success, formal validation of static analysis tools remains relatively unexplored. In this paper we present checkification, a simple, automatic method for testing static analyzers. Broadly, it consists in checking, over a suite of benchmarks, that the properties inferred statically are satisfied dynamically. The main advantage of our approach lies in its simplicity, which stems directly from framing it within the Ciao assertion-based validation framework, and its blended static/dynamic assertion checking approach. We demonstrate that in this setting, the analysis can be tested with little effort by combining the following components already present in the framework: 1) the static analyzer, which outputs its results as the original program source with assertions interspersed; 2) the assertion run-time checking mechanism, which instruments a program to ensure that no assertion is violated at run time; 3) the random test case generator, which generates random test cases satisfying the properties present in assertion preconditions; and 4) the unit-test framework, which executes those test cases. We have applied our approach to the CiaoPP static analyzer, resulting in the identification of many bugs with reasonable overhead. Most of these bugs have been either fixed or confirmed, helping us detect a range of errors not only related to analysis soundness but also within other aspects of the framework.

Many aspects of migration policy involve hard moral dilemmas. Whether the dilemmas are concerned with refugee accommodation and integration, temporary labor migration, or the prospects of rejected asylum seekers, policymakers must sometimes make tough choices between competing and equally compelling moral values. Through in-depth discussion of various concrete examples, contributions to this roundtable argue that recognition and systematic analysis of the “ethics of migration policy dilemmas” can both increase philosophical and social-scientific understanding of public debates and policymaking on migration and provide ethical guidance for migration policy. Before introducing the roundtable’s individual contributions, this essay argues for the distinct epistemic value of the Dilemmas perspective by contrasting it with an approach that emphasizes the “busting” of myths; that is, the empirical uncovering of influential falsehoods in public and policy debates, often in the hope of improving policymaking through stronger evidence. We argue that while such myth busting can be valuable, it is insufficient and sometimes unhelpful for understanding how migration policy comes about and can be improved. Policymaking is not just shaped by empirical facts and understandings but also by interests and goals, including moral ones, that give empirical considerations deeper meaning and action-guiding potential. Often, these moral goals are numerous, similarly or equally compelling, and in profound tension with one another. Where this is the case, we should not simply introduce more and more accurate factual descriptions; we must also analyze dilemmas.

Increasing disease outbreaks and declining biodiversity underscore the need for understanding the impact pathogens have on wildlife populations. To understand how zoonoses impact wild animal welfare, we created a severity index. Using signs of disease information from a bacterial zoonotic disease database, we quantified severity of each sign of disease combined with the number of welfare domains and body systems the pathogen impacts to find the severity index value (SIV) of each unique host-pathogen relationship. We then investigated the effects of host-pathogen richness and conservation status against SIV. We found there to be a strong, negative correlation between increasing pathogen richness and SIV. Species of least concern (LC) were not significantly more likely to have higher SIV than species of conservation concern (CC), but CC species did not have a significant decline of SIV with increasing pathogen richness. This study provides an insight into the relationships between pathogen richness and the risk of pathogen infections to wildlife.

Behavioural activation (BA) is recommended for the treatment of depression but most research focuses on working age adults and there is a dearth of literature concerning the delivery of BA with people with co-occurring depression and mild cognitive impairment (MCI). This case study outlines a BA intervention with a male in his late 60s with depression and MCI and describes appropriate adaptations that were useful. Treatment consisted of psychoeducation of depression and BA, formulation, activity monitoring and scheduling, tackling self-critical thoughts and rumination, and relapse planning. The 12-session BA treatment resulted in a decrease in both depressive symptoms and psychological distress as well as an increase in the individual’s engagement with meaningful activities. This case study adds to the literature and strengthens the argument for the use of BA in the treatment of depression in older adults with MCI. Adaptations, conclusions and limitations are discussed.

Key learning aims

1. (1) To gain an understanding of the use of behavioural activation (BA) in the treatment of depression in older adults with mild cognitive impairment (MCI).

2. (2) To illustrate treatment of depression using BA with an older adult utilising the current evidence base.

3. (3) To outline adaptations that can be made to BA to help deliver this treatment with an older adult who has MCI.

This study investigates how children aged 4 to 12 years participate in /u/-fronting, a phonetically conditioned change in Ontario English in which the high back vowel /u/ is initially more fronted after coronal consonants than in other contexts. A picture naming task was used to elicit vowel tokens from children and their parents, and F1 and F2 measurements were extracted using FAVE. Children in all three age groups (4-6, 7-9, 10-12 years) were found to have significantly higher F2 values for /u/ (indicating more fronting) than adults in the non-coronal environment. This pattern does not appear to follow the predicted pattern of incrementation of sound change by older children. Instead, the findings may reflect overgeneralization of /u/-fronting, with young children extending the change to a new phonetic context during acquisition, or an earlier start to the incrementation of this variable in this population.

Systematic reviews (SRs) synthesize evidence through a rigorous, labor-intensive, and costly process. To accelerate the title–abstract screening phase of SRs, several artificial intelligence (AI)-based semi-automated screening tools have been developed to reduce workload by prioritizing relevant records. However, their performance is primarily evaluated for SRs of intervention studies, which generally have well-structured abstracts. Here, we evaluate whether screening tool performance is equally effective for SRs of prognosis studies that have larger heterogeneity between abstracts. We conducted retrospective simulations on prognosis and intervention reviews using a screening tool (ASReview). We also evaluated the effects of review scope (i.e., breadth of the research question), number of (relevant) records, and modeling methods within the tool. Performance was assessed in terms of recall (i.e., sensitivity), precision at 95% recall (i.e., positive predictive value at 95% recall), and workload reduction (work saved over sampling at 95% recall [WSS@95%]). The WSS@95% was slightly worse for prognosis reviews (range: 0.324–0.597) than for intervention reviews (range: 0.613–0.895). The precision was higher for prognosis (range: 0.115–0.400) compared to intervention reviews (range: 0.024–0.057). These differences were primarily due to the larger number of relevant records in the prognosis reviews. The modeling methods and the scope of the prognosis review did not significantly impact tool performance. We conclude that the larger abstract heterogeneity of prognosis studies does not substantially affect the effectiveness of screening tools for SRs of prognosis. Further evaluation studies including a standardized evaluation framework are needed to enable prospective decisions on the reliable use of screening tools.