To improve understanding of prototyping practice at the fuzzy front end of the design process, this article presents an analysis of a prototyping dataset captured during the IDEA challenge – a 4-day virtually hosted hackathon – using Pro2booth, a web-based prototype capture tool. The dataset comprised 203 prototypes created by four independent teams working in university labs across Europe supported by interviews carried out with each of the teams after the event. The results of the study provide nine key findings about prototyping at hackathons. These include elucidation of the purposes of prototypes in physical, digital and sketch domains and characterisation of teams’ prototyping practices and strategies. The most successful strategy focused on learning about the problem or solution space, often via physical prototypes rather than following more prescriptive ‘theoretical’ methodologies. Recommendations on prototyping strategies in hackathons or similar scenarios are provided, highlighting the importance of practical strategies that prioritise learning and adaptation. The results of this study raise the broader question to the wider research community of how design research and teaching should balance high-level strategic approaches with more hands-on ‘operational’ prototyping.

Logical arguments from evil against the existence of God are the strongest form of arguments from evil. They maintain that the all-good, all-powerful God of traditional theism is logically incompatible with the evil in the world. Given that the most well-known logical argument from evil remains the argument put forward by John Mackie over fifty years ago, I begin by setting out Mackie’s argument in detail as well as Alvin Plantinga’s well-regarded critique of it. I then discuss Mackie’s not well-known confusing response to Plantinga’s critique along with attempts by Hugh LaFollette and Quentin Smith to support Mackie’s argument, which fail to take into account Mackie’s own concession to Plantinga’s critique. I then discuss my own attempt in 2019 to provide a Mackie-style logical argument from evil and the reception it has received. I end by suggesting that further discussion might best be pursued by taking up the related question of whether an objective ethics can by adequately supported without appealing to the existence of the God of traditional theism.

While governments have long discussed the promise of delegating important decisions to machines, actual use often lags. Consequently, we know little about the variation in the deployment of such delegations in large numbers of similar governmental organizations. Using data from crime laboratories in the United States, we examine the uneven distribution over time of a specific, well-known expert system for ballistics imaging for a large sample of local and regional public agencies; an expert system is an inference engine joined with a knowledge base. Our statistical model is informed by the push-pull-capability theory of innovation in the public sector. We test hypotheses about the probability of deployment and provide evidence that the use of this expert system varies with the pull of agency task environments and the enabling support of organizational resources—and that the impacts of those factors have changed over time. Within this context, we also present evidence that general knowledge of the use of expert systems has supported the use of this specific expert system in many agencies. This empirical case and this theory of innovation provide broad evidence about the historical utilization of expert systems as algorithms in public sector applications.

Inflammation and infections such as malaria affect micronutrient biomarker concentrations and hence estimates of nutritional status. It is unknown whether correction for C-reactive protein (CRP) and α1-acid glycoprotein (AGP) fully captures the modification in ferritin concentrations during a malaria infection, or whether environmental and sociodemographic factors modify this association. Cross-sectional data from eight surveys in children aged 6–59 months (Cameroon, Cote d’Ivoire, Kenya, Liberia, Malawi, Nigeria and Zambia; n 6653) from the Biomarkers Reflecting Inflammation and Nutritional Determinants of Anaemia (BRINDA) project were pooled. Ferritin was adjusted using the BRINDA adjustment method, with values < 12 μg/l indicating iron deficiency. The association between current or recent malaria infection, detected by microscopy or rapid test kit, and inflammation-adjusted ferritin was estimated using pooled multivariable linear regression. Age, sex, malaria endemicity profile (defined by the Plasmodium falciparum infection prevalence) and malaria diagnostic methods were examined as effect modifiers. Unweighted pooled malaria prevalence was 26·0 % (95 % CI 25·0, 27·1) and unweighted pooled iron deficiency was 41·9 % (95 % CI 40·7, 43·1). Current or recent malaria infection was associated with a 44 % (95 % CI 39·0, 52·0; P < 0·001) increase in inflammation-adjusted ferritin after adjusting for age and study identifier. In children, ferritin increased less with malaria infection as age and malaria endemicity increased. Adjustment for malaria increased the prevalence of iron deficiency, but the effect was small. Additional information would help elucidate the underlying mechanisms of the role of endemicity and age in the association between malaria and ferritin.

Electron heating and acceleration in collisionless shocks is a long-standing problem. Rapid isotropization of heated electrons cannot be explained solely by the cross-shock potential. In addition, the macroscopic cross-shock potential prevents efficient reflection and injection into the diffusive acceleration regime. Recent observations have shown that small-scale electric fields are present in the shock front, together with the large-scale cross-shock potential. These small-scale fields have been found also in the upstream and downstream regions. Electron heating in shocks is produced by the combined action of the large- and small-scale fields. The large-scale potential determines the energy transferred to the electrons. The small-scale electrostatic fields scatter electrons. Here we study the scattering of electrons on the typical waveforms, namely solitary bipolar spikes and wavepackets. The main effect is the generation of backstreaming electrons with large pitch angles. It is found that wavepackets are more efficient in electron reflection in the interaction of electrons both with a single spike and with multiple spikes.

The purpose of this paper is to examine the contours of evolving jurisprudence on offensive expression and negative messages, and to suggest that it can best be understood by reference to the concept of stigma. At the European Court of Human Rights, there appears to have been an increasing willingness to recognise the harm of offensive expression through an interpretation of Article 8 of the European Convention on Human Rights, but the reach of this case law remains uncertain. In particular, while some cases associate negative expression with negative stereotyping, not all of these cases do, and there are potential conflicts with freedom of speech. In the domestic context, these issues recently arose in a significant case from the Court of Appeal, R (Crowter) v Secretary of State for Health and Social Care. In this case, the appellants argued that a legal provision sends a negative ‘message’, through the negative stereotyping of disabled people, but this ‘message’ is implicit, rather than explicitly articulated. While these developments raise important questions about the future evolution of case law, we propose that a focus on stigma can more clearly highlight the harms involved.

Between 1964 and 1985, a military dictatorship in Brazil combined an arsenal of political instruments—surveillance, violent repression, and propaganda, among others—to justify its illegal rule. How did the Brazilian military regime attempt to justify its claim to power for more than two decades? What discursive strategies did it use to win popular support, despite the violence it perpetrated? This paper investigates how discourse is used to legitimize power and create meaning in authoritarian regimes. Using ethnographic content analysis of archival materials, I pinpoint and analyze three key discursive frames employed in regime propaganda: “defenders of democracy,” “Great Brazil” and “model citizenship.” I argue that the Brazilian military regime used these frames to justify its authority, forge national values and social norms, and redefine the boundaries of the national community. These findings not only contribute to our understanding of authoritarian power that is wielded and legitimized through discourse, but also speak to the enduring consequences of authoritarianism in sociopolitical subjects.

This article examines how and why the Ptolemies, soon after they succeeded Alexander in Egypt, orchestrated the return of Egyptian statues supposedly stolen by the Persians, drawing on the cultural memory of different population groups: Egyptians and Graeco-Macedonians. First, it argues that the Ptolemies invested energy in searching for Egyptian objects and gods’ statues in the Levant, which they distributed among the temples, though some may have been newly fabricated statues. Second, the study aims to reconstruct what the Ptolemies knew about earlier Greek and Near Eastern traditions of seizing and returning statues, which mixed elements of truth with topoi. This reconstruction serves to explain how meaningful it was to Egyptians and Graeco-Macedonians to bring back statues after each campaign. Finally, comparing the tale of Bentresh, the account of Sarapis’ origin by Tacitus and the Ptolemaic stelae, the article suggests that these narratives highlighted Egypt as the centre of the world with the most powerful ruler, a claim appealing to all its inhabitants.

We investigate how hardships affect rural politics, considering the case of hospital closures. In the last two decades, more than two hundred rural hospitals have closed their doors or drastically reduced their services. Drawing from resource models of voting, our hypothesis is that personal- and community-level deprivations brought about by hospital closures should reduce election turnout. Empirical tests pair geographic information on the location of open and closed hospitals with data from state voter files to create a panel of over 10 million rural residents for the 2016, 2018, and 2020 national elections. Results show that individuals whose nearest hospital closed prior to the proximate election were less likely to vote than their unaffected counterparts. These effects are strongest for older and lower-income residents, but they decay over time so that voting likelihood resembles a pre-closure baseline within 12 months.

In a scene of father-son conflict in Aristophanes’ Clouds, father Strepsiades supports his right to be treated well by his son Pheidippides by reminding the boy of how well he was taken care of as a baby. Even before Pheidippides could talk properly, his father catered to his every wish. If he said ‘brū’, his father would get him something to drink, ‘mammā’ would make him get food, and ‘kakkā’ would lead to his being taken outside to relieve himself. These baby-words have always been taken for what Strepsiades claims they were: meaningful and intentional baby requests.

Starting with brū, we discuss ancient and modern interpretations of the passage and contextualize it within the history of ancient and later Western thought about child language. We then propose a new interpretation of brū as the conventional rendition of a universal baby vocalization, what is known as a ‘raspberry’. In performance, this would lead to a mimetic ‘depiction’ in the middle of Strepsiades’ sentence. Finally, we return to the utterances mammā and kakkā to show that there, too, Strepsiades may be demonstrating parental devotion by interpreting the virtually unintelligible and by acting out baby activities that lend plausibility to his mantic performance.

Photosynthetically active radiation (PAR) at the ice-ocean interface is critical for primary production. The value of PAR is affected by the thickness of snow and sea ice, with additional absorbers (e.g. algae) further attenuating PAR. Sea-ice algae exhibit a substantial geo-temporal variance in column-integrated concentration (0–500 mg chl-a m−2) and are typically present within the bottom 0.01–0.2 m of sea ice. PAR transmittance is affected by algae concentrations and vertical thicknesses of ice algal layers. Small column-integrated concentrations of chl-a (~<10 mg chl-a m−2) have a negligible effect on the value of PAR transmittance, and large column-integrated concentrations of chl-a (~>10 mg chl-a m−2) can significantly reduce the value of PAR transmittance. Large column-integrated concentrations of chl-a need consideration when calculating PAR transmittance in areas of high sea-ice algae biomass (e.g. the ‘interior’ shelves of the Arctic Ocean, the Canadian Arctic and Antarctica).

This paper considers a new corpus of 490,154 Roman coins (site finds) which have been recorded from England and Wales. The corpus provides British and regional means to aid in the preparation of coin reports in line with Historic England guidelines, along with spatial data providing new opportunities for research. The methods of data collection will be detailed and some of the possibilities this dataset can provide presented through a number of case studies. Through the consideration of applied numismatic analyses, the social distribution of the material and, crucially, the spatial distribution of Roman coinage, we can identify new trends and patterns. Case studies evaluating the fourth century will emphasise the changing importance of settlements in Roman Britain and identify those linked with the late Roman state. Furthermore, the retraction of coinage distributions in the second half of the fourth century will be explored. Building on the national and site type means explored within the paper, the full dataset has been made available in a range of forms on the Archaeology Data Service and in an interactive map developed by Maploom.