We investigate the notion of ideal (equivalently: filter) Schauder basis of a Banach space. We do so by providing bunch of new examples of such bases that are not the standard ones, especially within classical Banach spaces ($\ell _p$, $c_0$, and James’ space). Those examples lead to distinguishing and characterizing ideals (equivalently: filters) in terms of Schauder bases. We investigate the relationship between possibly basic sequences and ideals (equivalently: filters) on the set of natural numbers.

This study examines the political participation of undocumented Mexican immigrants residing in the United States in Mexican external voting. As international mobility of people has increased globally, scholarly attention has grown concerning how overseas citizens engage in electoral processes in their countries of origin. However, previous studies based on traditional survey methods may have yielded biased results due to the underrepresentation of undocumented immigrants, who are less likely to enroll in survey company panels due to concerns about the potential compromise of their identities. To include this hard-to-reach population and conduct representative sampling, our research employs a method called respondent-driven sampling (RDS), which permits the surveying of a population devoid of a sampling frame. Our analysis of the Mexican case demonstrates that a lack of electoral information, lower levels of education, and heightened distrust of the Mexican government are associated with diminished electoral participation.

Policies on the demand side of fossil fuels are not enough to fight against climate change, and policies on the supply side should be adopted as supplements. The idea of phasing out fossil fuels at the starting point of the energy chain, despite the fact that it has not yet been legally binding, has been seriously discussed in the Conference of the Parties. In this regard, the special situation of highly fossil fuel-dependent countries (HFFDCs), such as Iraq and Azerbaijan, should be fully considered under Article 4.8 of the United Nations Framework Convention on Climate Change. This article seeks to analyse the legal approach and arguments of the HFFDCs and the non-fossil fuel-dependent countries (NFFDCs), such as Austria and Sweden, towards policies and initiatives to phase out fossil fuels. The NFFDCs, relying on the just transition stemming from principle of Common but Differentiated Responsibilities and Respective Capabilities, have put forward the initiatives of creating a non-binding coalition and a binding treaty in analogy with the Non-Proliferation of Nuclear Weapons. In contrast, the HFFDCs, based on the principle of permanent sovereignty over natural resources, have presented the Net Avoided Emission and phasing out fossil fuel emissions initiatives. Each party has a fundamental criticism of the legal arguments and the initiative of the other party. The idea of the Office of the High Commissioner for Human Rights in 2018 to promote the human right to equitable development can reconcile the parties’ arguments. This idea requires the NFFDCs to cooperate with the HFFDCs in improving the level of human development and reducing the economic and social effects rising from phasing out fossil fuels in the HFFDCs.

This article maps out the challenges of public global health communication in the context of the COVID-19 pandemic by providing an overview of the shifting media of health communication from the post-Second World War era to the present. The article explores the communication of science in real-time or live media of film, television, video and digital social media during three emerging infectious-disease (EID) outbreaks to place COVID-19 health communication in historical perspective. Examination of the transition from centralized, top-down communications to distributed, many-to-many, mobile communication illuminates challenges to expertise, authority and control of health narratives and imagery. Through theories of intermediality, the article explores the central function of gaps in communication networks. The article considers three cases of crisis communications amid EIDs: the influenza outbreak of 1957, HIV/AIDS around 1990 and COVID-19 in the early 2020s, and the challenges posed by scientific uncertainty under these circumstances of live, intermedial health communication. The article concludes that ‘liveness’ in intermedial health communications may have an inherently destabilizing effect on scientific authority.

In 2022, an anti-vaccine mandate protest in Canada received millions of dollars in support through online crowdfunding. This event catalyzed political crowdfunding in Canada by demonstrating its ability to disseminate ideological discourse and mobilize collective action. Given its newfound visibility and impact, this study examines the landscape of political crowdfunding in Canada. We examined 60 campaigns from the legal, current events and political categories on the crowdfunding platform GiveSendGo and classified campaigns into: COVID-19-related topics, alternative media and free speech, climate change skepticism, and other political campaigns. Thematic analysis of the interactive discourse between campaign hosts and donors revealed that many campaigns were motivated by defending individual rights and freedoms amidst perceived government overreach, which fuels a distrust towards authority, including the government and mainstream media. Our study suggests that political crowdfunding empowers individuals to symbolically reflect their political and ideological beliefs through financial donations.

True bugs (Hemiptera: Acanthosomatidae, Coreidae, and Pentatomidae) include harmful crop pests affecting global agriculture, with different species displaying distinct optimal conditions for development and using different habitats. Over a 2-year period, this research investigates how habitat variation and altitude can influence the species composition of true bugs and their egg parasitoids in South Tyrol (North Italy), unveiling different trends in their population and diversity across habitats: apple orchards, urban areas, and forests. A total of 25 true bug species were sampled. Urban environments hosted the highest bug abundance, predominantly driven by the invasive Halyomorpha halys, while forests showed a higher prevalence of native species such as Pentatoma rufipes and Palomena prasina. Altitude significantly influenced species composition, with H. halys and P. rufipes abundance negatively and positively correlated with altitude, respectively. A total of 12 parasitoid species (Hymenoptera: Eupelmidae, and Scelionidae) emerged from the field-collected bug eggs, including the exotic Trissolcus japonicus, predominantly associated with H. halys in urban areas. Native parasitoids exhibited higher parasitism rates on native bug species, indicating co-evolutionary relationships. The results give an insight into the ecological dynamics of local true bug species and their egg parasitoids, and highlight the value of natural and urban areas for conserving both hemipteran and parasitoid species richness and abundance.

Healthy diets are unaffordable for billions of people worldwide, with food prices rising in high-, middle- and low-income nations in recent times. Despite widespread attention to this issue, recent actions taken to inform policy prioritisation and government responses to high food inflation have not been comprehensively synthesised. Our review summarises (i) innovative efforts to monitor national food and healthy diet price, ii) new policy responses adopted by governments to address food inflation and (iii) future research directions to inform new evidence. Evidence synthesis. Global. None. We describe how timely food and beverage pricing data can provide transparency in the food industry and identify key areas for intervention. However, government policies that improve food affordability are often short-lived and lack sustained commitment. Achieving meaningful impact will require long-term, cross-sectoral actions that are led by governments to support food security, healthy diets and resilient sustainable food systems. This will necessitate a better understanding of how the political economy enables (or hinders) policy implementation, including through coherent problem framing, mitigating conflicts of interest in policymaking, working together as coalitions and developing and utilising evidence on the food security and related impacts of food pricing and affordability policies. Diverse actors must be better equipped with robust data platforms and actionable policy solutions that improve the affordability of healthy and sustainable diets, including by lowering food prices and addressing the broader socio-political determinants of food insecurity.

Empathic accuracy (EA) is the ability to accurately understand another person’s thoughts and feelings, which is crucial for social and psychological interactions. Traditionally, EA is assessed by comparing a perceiver’s moment-to-moment ratings of a target’s emotional state with the target’s own self-reported ratings at corresponding time points. However, misalignments between these two sequences are common due to the complexity of emotional interpretation and individual differences in behavioral responses. Conventional methods often ignore or oversimplify these misalignments, for instance by assuming a fixed time lag, which can introduce bias into EA estimates. To address this, we propose a novel alignment approach that captures a wide range of misalignment patterns. Our method leverages the square-root velocity framework to decompose emotional rating trajectories into amplitude and phase components. To ensure realistic alignment, we introduce a regularization constraint that limits temporal shifts to ranges consistent with human perceptual capabilities. This alignment is efficiently implemented using a constrained dynamic programming algorithm. We validate our method through simulations and real-world applications involving video and music datasets, demonstrating its superior performance over traditional techniques.

Bilinguals simultaneously activate both languages during word retrieval. False cognates, words overlapping in form but not meaning across languages, typically trigger crosslinguistic interference relative to non-cognates. Crosslinguistic interference resolution can be impaired in bilinguals with stroke-induced aphasia, yet little is known about the neural dynamics supporting these interference resolution processes. We recorded scalp electroencephalography in 21 age-matched controls and five bilinguals with aphasia participating in a picture-word interference paradigm eliciting crosslinguistic interference and a nonlinguistic spatial Stroop task. Bilinguals with aphasia showed lower performance than age-matched controls and crosslinguistic interference was present across both groups. A medial frontal component peaking around 400 ms post stimulus presentation was present in controls across tasks but was absent in the linguistic task in bilinguals with aphasia. This suggests that while bilinguals typically engage the medial frontal cortex to resolve crosslinguistic interference, this mechanism is disrupted in bilinguals with aphasia.

Qualitative research addresses important healthcare questions, including patients’ experiences with interventions. Qualitative evidence syntheses combine findings from individual studies and are increasingly used to inform health guidelines. However, dissemination bias—selective non-dissemination of studies or findings—may distort the body of evidence. This study examined reasons for the non-dissemination of qualitative studies. We identified conference abstracts reporting qualitative, health-related studies. We invited authors to answer a survey containing quantitative and qualitative questions. We performed descriptive analyses on the quantitative data and inductive thematic analysis on the qualitative data. Most of the 142 respondents were female, established researchers. About a third reported that their study had not been published in full after their conference presentation. The main reasons were time constraints, career changes, and a lack of interest. Few indicated non-publication due to the nature of the study findings. Decisions not to publish were largely made by author teams. Half of the 72% who published their study reported that all findings were included in the publication. This study highlights researchers’ reasons for non-dissemination of qualitative research. One-third of studies presented as conference abstracts remained unpublished, but non-dissemination was rarely linked to the study findings. Further research is needed to understand the systematic non-dissemination of qualitative studies.

We administer a theory-driven, lab-in-the-field experiment to study the disposition effect among financial professionals. Our novel design identifies, at the individual participant level, key behavioral drivers of the disposition effect: reference-dependent risk attitudes (“tastes”), second-order uncertainty attitudes (including “ambiguity”), and subjective likelihood assessments (“beliefs”). Among the 237 professionals in our sample, 34% exhibited the disposition effect, which seems to be primarily driven by non-Bayesian beliefs. Our experimental results suggest that, when faced with new information about their asset’s performance, financial professionals failed to update their beliefs sufficiently leading them to sell the asset that gained (lost) value more (less) readily.

This article explores the notion of colour at the crossroads of humoral medicine and chymistry in late Renaissance Europe. First, it considers the broader context of the traditional analogy between the transmutation of the stone and the formation of humours in medieval alchemy. By highlighting colours as visual markers of material change, alchemical texts drew analogies and metaphors from Galenic medicine to describe the gradual transformation of bodies and their corresponding chromatic change during transmutation. As argued in this paper, such views shifted with the emergence of Paracelsian medicine. This ‘new’ chymical philosophy downplayed the humoral conception of colours in favour of the chymical ‘principles’ and ‘seminal powers’ obtained by distillation. In examining the views of Petrus Severinus, Joseph Du Chesne, and Daniel Sennert, this article aims to appraise their reception of the medical and alchemical tradition on colours, as well as their contribution to a novel yet epistemically ambivalent understanding of colour and sensory properties in the early seventeenth century.