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BACKGROUND: The emergence of COVID-19 resulted in a substantial loss of education because of global school closures. Face masks are a potential measure to restrain the COVID-19 spread; therefore, this paper evaluated the effectiveness of face masks in reducing COVID-19 incidence in school settings. METHODS: A systematic review was conducted by searching the literature in the Cochrane COVID-19 Study Register and the World Health Organization COVID-19 global literature. Data were summarized in tabular forms, and the findings were presented as narrative synthesis. RESULTS: A total of 15,709 records were retrieved. The screening and selection led to the inclusion of 12 observational and 2 quasi-experimental studies. Nine studies were conducted in different states, counties, or districts of the United States, and the remaining 5 were reported from Germany, Finland, Spain, and the United Kingdom. The results of 10 out of 14 studies favored mask use in reducing school COVID-19 incidence. Three studies found no link between mask use and COVID-19 incidences, whereas 1 quasi-experimental study noted a higher COVID-19 incidence with mask use in students aged 6-11 years than no use of mask among preschool children aged 3-5 years. CONCLUSION: Mask mandates may lessen the incidence of respiratory infectious diseases in school settings during a pandemic; more well-designed studies are warranted to clarify further the evidence regarding mask use in school settings.

Effectively utilizing low-grade thermal energy is a promising approach to mitigating greenhouse gas emissions while reducing the burden on centralized power grids. Current thermoacoustic heat pumps and power generators face challenges such as high onset temperature differentials and low performance. This paper addresses these challenges by introducing a gas-liquid resonator into a thermoacoustic combined heat and power systems to recover low-grade thermal energy in residential buildings. Through Sage modeling and calculations, the internal characteristics of the proposed system and its output performance under different operating conditions are explored. At a heating temperature of 350 °C, the system can generate 6.4 kW of output thermal power, 0.9 kW of electricity, and overall exergy efficiency is 79.3 %. Combining neural network models with case studies conducted in Spain and Finland, the system can annually save 5.6 MWh and 20.7 MWh in fuel energy, reduce emissions of 1374 kg and 5180 kg of carbon dioxide, and save a total cost of €611 and €2324, respectively. Furthermore, comparisons with other emerging micro-CHP systems highlight the efficiency of the proposed system. These results indicate the high potential of thermoacoustic combined heat and power systems in recovering low-grade thermal energy and achieving energy savings and emission reductions. • Introducing an innovative thermoacoustic micro-CHP system. • Achieving an exergy efficiency of 79.3 % under standard operating conditions. • One system can annually reduce household CO 2 emissions by 5180 kg. • Ideal for households, balancing lower output levels for both heat and electricity. [ABSTRACT FROM AUTHOR]

In recent decades, disappointing poverty trends and welfare state limitations in many European countries – including constraints on minimum income benefits – have paved the way for a larger role of the third sector. An interesting but controversial form of third-sector in-kind support is food aid provision. In Europe, food aid is, so far, a non-rights-based practice displaying worrisome discretionary and stigmatizing characteristics. Yet, the phenomenon of food aid in Europe has spread, professionalized, and penetrated the institutions of the welfare state. This raises the question if, how and to what extent food aid plays a role in bypassing structural constraints on minimum income protection. This article applies an exploratory case study approach to estimate the monetary value of food aid in relation to statutory minimum incomes in four EU-countries. We use cross-nationally comparable food reference budgets to price food aid packages in Belgium, Finland, Hungary and Spain. The results show that food aid, although not sufficient to close the at-risk-of-poverty gap, is non-trivial for some European households. In Spain and Belgium food aid packages can reach up to €100 a month (expressing 7% to 11% of respective minimum income benefit levels). Importantly, we perceive (formalized) cooperation and interaction between local welfare agencies and food charities in all countries, suggesting that welfare state actors use non-rights-based food aid for filling gaps in the social safety net. The large between- and within-country variation of the monetary values of food aid packages points, however, to food aid as a problematic discretionary practice. [ABSTRACT FROM AUTHOR]

The study of variables related to the use of ICT in the classroom is a topic of interest that has been frequently researched. In this paper, after examining the importance of teacher training in explaining the use of ICT in the classroom, we focused on analysing the weight of variables related to teaching practices and the organisational context of schools, which are variables that are less frequently addressed in the literature. To do so, a secondary analysis was carried out using data provided by the Teaching and Learning International Study (TALIS 2018). Specifically, we worked with a sample of 3,918 principals and 64,899 teachers from a total of 3921 schools in 21 countries. A multilevel binary regression model with random intercept, fixed coefficients and a two-level structure with teachers at level 1 and schools at level 2 was used. The results indicate that the presence of ICT in the classroom is associated with self-efficacy in teaching and the cognitive activation of students and with the organisational aspects of the school, which are scarcely addressed by the existing literature on this topic of interest, such as school climate, educational innovation and cooperation among teachers. Based on these results, we reflect on possible ways to promote the use of ICT in the classroom.

For over two decades now, the application of Citizen Science to Education has been evolving, and fundamental topics, such as the drivers of motivation to participate in Citizen Science projects, are still under discussion. Some recent developments, though, like the use of Artificial Intelligence to support data collection and validation, seem to point to a clear-cut divergence from the mainstream research path. The objective of this paper is to summarise the development trajectory of research on Citizen Science in Education so far, and then shed light on its future development, to help researchers direct their efforts towards the most promising open questions in this field. We achieved these objectives by using the lens of the Affordance-Actualisation theory and the Main Path Analysis method.

The purpose of this study was to review academic papers on the experiences of binary and non-binary trans people in physical education (PE), published between January 2000 and August 2022. The selection process yielded 16 articles from Brazil, the UK, Spain, Canada, Finland, Ireland, New Zealand, and the USA. The discussion focuses on five themes for analysis: (a) school policies and control, (b) curriculum activities, (c) social environment, (d) transgendering while surviving, and (e) trans-positive experiences. The systematic review highlights the fact that heteronormativity is still present in schools and PE spaces, positioning, categorizing, and policing dissenting bodies and gender identities, which means that many trans students did not have good memories of PE classes. Many similar situations were faced by both binary and non-binary trans students, although with some notable differences. It is thus necessary to deconstruct the prevailing cis-heteronormativity during PE lessons to eradicate the discrimination that (re)produces a hostile environment for these students.

This study addressed the scarcity of NH 3 measurements in urban Europe and the diverse monitoring protocols, hindering direct data comparison. Sixty-nine datasets from Finland, France, Italy, Spain, and the UK across various site types, including industrial (IND, 8), traffic (TR, 12), urban (UB, 22), suburban (SUB, 12), and regional background (RB, 15), are analyzed to this study. Among these, 26 sites provided 5, or more, years of data for time series analysis. Despite varied protocols, necessitating future harmonization, the average NH 3 concentration across sites reached 8.0 ± 8.9 μg/m 3 . Excluding farming/agricultural hotspots (FAHs), IND and TR sites had the highest concentrations (4.7 ± 3.2 and 4.5 ± 1.0 μg/m 3 ), followed by UB, SUB, and RB sites (3.3 ± 1.5, 2.7 ± 1.3, and 1.0 ± 0.3 μg/m 3 , respectively) indicating that industrial, traffic, and other urban sources were primary contributors to NH 3 outside FAH regions. When referring exclusively to the FAHs, concentrations ranged from 10.0 ± 2.3 to 15.6 ± 17.2 μg/m 3 , with the highest concentrations being reached in RB sites close to the farming and agricultural sources, and that, on average for FAHs there is a decreasing NH 3 concentration gradient towards the city. Time trends showed that over half of the sites (18/26) observed statistically significant trends. Approximately 50 % of UB and TR sites showed a decreasing trend, while 30 % an increasing one. Meta-analysis revealed a small insignificant decreasing trend for non-FAH RB sites. In FAHs, there was a significant upward trend at a rate of 3.51[0.45,6.57]%/yr. Seasonal patterns of NH 3 concentrations varied, with urban areas experiencing fluctuations influenced by surrounding emissions, particularly in FAHs. Diel variation showed differing patterns at urban monitoring sites, all with higher daytime concentrations, but with variations in peak times depending on major emission sources and meteorological patterns. These results offer valuable insights into the spatio-temporal patterns of gas-phase NH 3 concentrations in urban Europe, contributing to future efforts in benchmarking NH 3 pollution control in urban areas., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 The Author(s). Published by Elsevier Ltd.. All rights reserved.)