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To evaluate the temperature-dependency of the Young’s and shear moduli of concrete after exposure to moderately elevated temperatures using the non-destructive impulse excitation technique (IET).

The study involved heating the concrete up to 225 °C and measuring the dynamic Young’s and shear moduli using the non-destructive technique of impulse excitation, which measures the natural vibration frequency from a mechanical impulse received by an acoustic sensor. The effects of temperature on the dynamic Young’s and shear moduli were analysed and the importance of the spatial variability of the measured values was also verified.

The study found that even moderately elevated temperatures (below 225 °C) resulted in a significant permanent reduction in the Young’s modulus of concrete (reduction in the range of 23%–36% for the maximum temperature considered in this research) as well as a modest and permanent reduction in the shear modulus of around 6%. It was also observed that spatial variability of the mechanical properties of concrete plays an important role in the measured values; higher dispersion of the results was found for the values of the Young’s and shear moduli of concrete measured along the height of the beam. The non-destructive test method used in this study was found to be extremely useful in the investigation of heat-related damage in concrete structures for its ease of use, low time consumption and accuracy. The results were consistent with the published literature.

This study provides important insights into the temperature-dependent behaviour of the dynamic Young’s and shear moduli of concrete and highlights the significance of proper consideration of the spatial variability of the measured values. The use of a non-destructive test method for continuous acoustic testing during heating and cooling proved to be effective, and the findings contribute to the fields of materials science and civil engineering in understanding the effects of elevated temperatures on concrete properties. The findings confirm that IET can be easily used to gather important information in the condition assessment and rehabilitation of concrete structures after a fire event. Further studies to foster the application of this technique to real structures are suggested.

This paper aims to apply the novel numerical model to analyze the effect of pillar material on the response of compound quartz crystal resonator (QCR) with an array of pillars. The performance of the proposed device compared to conventional QCR method was also investigated.

A finite element method model was developed to analyze the behavior of QCR coupled with an array of pillars. The model was composed of an elastic pillar, a solution and a perfectly matched layer. The validation of the model was performed through a comparison between its predictions and previous experimental measurements. Notably, a good agreement was observed between the predicted results and the experimental data.

The effect of pillar Young’s modulus on the coupled QCR and pillars with a diameter of 20 µm, a center-to-center spacing of 40 µm and a density of 2,500 kg/m³ was investigated. The results indicate that multiple vibration modes can be obtained based on Young’s modulus. Notably, in the case of the QCR–pillar in air, the second vibration mode occurred at a critical Young’s modulus of 0.2 MPa, whereas the first mode was observed at 3.75 Mpa. The vibration phase analysis revealed phase-veering behavior at the critical Young’s modulus, which resulted in a sudden jump-and-drop frequency shift. In addition, the results show that the critical Young’s modulus is dependent on the surrounding environment of the pillar. For instance, the critical Young’s modulus for the first mode of the pillar is approximately 3.75 Mpa in air, whereas it increases to 6.5 Mpa in water.

It was concluded that the performance of coupled QCR–pillar devices significantly depends on the pillar material. Therefore, choosing pillar material at critical Young’s modulus can lead to the maximum frequency shift of coupled QCR–pillar devices. The model developed in this work helps the researchers design pillars to achieve maximum frequency shift in their measurements using coupled QCR–pillar.

This chapter presents an international review of the experiences of children and parents regarding care during the COVID-19 pandemic. The pandemic profoundly impacted children and families, magnifying the influence of governmental policies, socio-economic disparities and cultural contexts on children's experiences and exacerbating global inequalities. Vulnerable families faced increased challenges affecting children's rights and well-being, while the transition to digital learning highlighted the critical need for equitable access to technology. Despite extensive documentation of these challenges, research focusing on the pandemic's impact on young children's development, well-being, socialization and learning opportunities, as well as the experiences of parents/carers, remains limited. This scarcity stems from the pandemic's constraints on research activities, requiring reliance on online methods and the increased burdens on parents/carers, making participation in research more challenging.

Employing the PRISMA 2020 method for a literature review, this chapter aggregates international research findings on the subject, examining the impacts of COVID-19 on health and well-being, knowledge of the pandemic, effects on learning, educational strategies, online activity engagement and collaboration with Early Childhood Education and Care (ECEC) services. It concludes with a synthesis of insights and recommendations drawn from the reviewed literature.

The chapter contributes to a comprehensive framework for understanding the pandemic's impact on young children and their families, emphasising the importance of targeted interventions, equitable resource distribution and ongoing support for the ECEC sector to address the challenges and opportunities presented by the COVID-19 pandemic and future crises.

This study employs the social ecology model to comprehensively explore the complex challenges young Black men face in South Africa and aims to highlight the importance of collaboration in addressing these multifaceted issues.

A multidisciplinary approach combines insights from sociology, education and the health literature with regard to government reports and academic data, and provides a holistic analysis of challenges faced by young Black men. Furthermore, it emphasises formal and informal learning, social and environmental influences and health disparities.

Young Black men in South Africa encounter complex challenges throughout their developmental journey, including limited family support, educational barriers, financial constraints, societal expectations and health disparities. Therefore, collaboration among stakeholders is essential for creating an equitable and inclusive environment that supports their development.

This research provides a comprehensive understanding of the challenges faced by young Black men in South Africa by emphasising the interconnectedness of informal education, economic empowerment and healthcare. Future research should focus on longitudinal studies, cultural influences and international comparisons, informing evidence-based interventions for a more equitable society.

In Fiji, Indo-Fijians constitute the second largest community after Indigenous Fijians. Indo-Fijian women face gender and racial inequalities to access sports and Physical Education (PE) in Fijian high schools. To gain a comprehensive view of the sporting realities of these young women, an ethnographic study was carried out with 12 young Indo-Fijian women via participant observations and semi-structured interviews, which were driven by sporting experience-related photographs taken by the participants and participant-voiced free verses. This chapter extracts four young women's experiences from the larger set of data and weaves a one-act play to holistically present their lived sporting experiences. This non-fiction creative piece captures the young women's colloquial words and artistic writings, thus creating a space where the reader can hear their voices and feel their sporting experiences too. We employ intersectional lenses together with Critical Race Theory (CRT) to look at the social factors that influence their sporting lives. The findings reveal that factors such as traditional gender norms, racism, age, classism and internal migration from rural co-ed to urban co-ed schools intersect at various levels to determine the segregation of Indo-Fijian girls from ‘mixed racial’ (team) sports. Moreover, in high school PE lessons, iTaukei (Indigenous Fijian) interests are maintained in sports where PE lessons are focused on dominant sports (rugby, soccer and netball) with emphasis on competition rather than inclusive participation for all. Therefore, this paper supports the opening of pathways for Indo-Fijian girls and women to participate in sports so that they can exercise their rights as Fijian citizens.

This paper comprehensively investigates the lack of youth involvement in the intricate tapestry of urban policymaking in the Jordanian context. It attempts to present and illustrate the obstacles, challenges, hindrances and complexities facing engaging youth in urban planning in Jordan. Participants aged 18–24 were the primary focus of the investigation, as Jordan's population is predominantly youthful, with approximately 70% of the population under the age of 30.

The research methodology adopted in this study is a mixed-methods approach, which integrates both qualitative and quantitative data collection and analytical techniques to provide a comprehensive and nuanced understanding of the research problem.

Youth involvement in Jordan's urban policymaking is limited and inconsistent. Most notably, the prevalence of adultism emerges as the predominant and most substantive impediment, exerting a considerable influence on constraining the agency of young Jordanians in shaping urban policy.

Detailed examples can be developed to offer discerning elucidations relevant to each frame of reference.

A total of 12 discernible barriers emerged from a systematic deductive thematic analysis of primary data.

This comprehensive inquiry highlights the pervasive gaps in support for youth participation in urban policymaking within the administrative framework and across Jordanian society. Subsequent quantitative analysis was employed to strengthen the external validity of the research findings, thereby enhancing the generalizability of the qualitative insights. By employing Jordan as a case study, this paper significantly contributes to the expanding corpus of scholarly work on planning processes and practices within the Global South and the Arab world.

Digital technologies have impacted our culture by expanding into every interstice of everyday life. Mobile gadgets for communications, work and leisure, social media, apps and platforms – the diverse array of items that we usually refer to as digital media and that keep people permanently connected – are at the core of a wider change that goes beyond the use of technology. These technologies provide the material structure for the complex and constant fluxes of information that permeate people's lives, originating new dynamics that impact people's relations, beliefs, practices, representations and identities, bodies or creative and political expressions. Understanding technology as a producer of meanings, subjectivities and agency that are shaped by power relations is central to the MyGender project. Hence, technology is not seen as neutral but as a place of political power. This chapter places young adults at the centre of the changing environment as main cultural and media producers and traces their practices, discourses and representations. By integrating diverse theoretical and empirical contributions that focus on the most relevant aspects of this changing environment, analysing significances, practices and negotiations related to digital cultures and young adults, this chapter proposes a narrative critical literature review that aims to provide a solid framework for the remaining chapters, within the theoretical horizon of the MyGender project.

The purpose of this paper is to investigate the importance of culture as a motivator for young generations to travel and their willingness of using crowdfunding to sustain culture.

Using a mixed-methods sequential exploratory design and through a quantile regression analysis for count data, a sample of 1,721 Italian young people is examined.

The analysis reveals that culture is a significant factor for a trip’s motivation among young generations and crowdfunding represents a key alternative instrument for financing culture.

The research fills the gap in extant literature by clarifying the role of culture in the choice of a touristic destination by young generations. This is a significant achievement since understanding the motivations is crucial to attract tourists at a specific destination and it represents a relevant insight for policy makers.

This paper believes that while implementing the gradual delay retirement age policy in China, the impact should be considered comprehensively; we should pay attention to impacts brought by the delayed retirement policy and introduce policies to deal with the impacts in a timely manner.

This paper aims to explore the delayed retirement’s impact on women’s labor supply and to clarify the elderly care’s role in it.

The results found that the delayed retirement has a positive effect on the women’s overall and young women’s labor supply, with a more significant promotion for young women’s labor supply. The mediation results suggest that delayed retirement promotes women’s labor supply by affecting elderly care. Therefore, we believe that while implementing the gradual delay retirement policy in China, it is important to implement it on the correct estimation basis so as to reduce the volatility in the labor market.

This paper may produce marginal contributions in the following two aspects: From the research perspective, we construct a model containing delayed retirement, elderly care and women’s labor supply and illustrate how the delayed retirement promotes women’s labor supply by affecting elderly care. Secondly, from the research content, this paper expands the delayed retirement on macro-employment and further explores the micro-impact on employment.

The purpose of this paper is to report findings from a service evaluation of a training initiative in participatory practice with children and young people (CYP) for early help (EH) professionals. The training was based on the Lundy model of child participation.

A questionnaire-based survey was undertaken of staff completing the training. Within the sample of professionals surveyed, various work contexts were represented.

Reported benefits arising from the training included increased understanding of the utility of the tenets of the Lundy model, as well as changes in practice with CYP. Barriers and issues encountered in seeking to work in a participatory way were identified in relation to time for relationship-building, resources and interprofessional and interagency working.

The evaluation findings provide insight into ways training in participatory practice with CYP is experienced by EH professionals. The role of networks of practitioner champions in influencing participatory practice is also addressed, as well as the interface between participatory and relationship-based practice.