Monitoring and Mitigating Particulate Matter Deposition on Decorative Surfaces: Current and Future Approaches in the Palace of Westminster

ABSTRACT

Research into dust deposition rates on the wall paintings in the State Apartments at the Palace of Westminster, London, UK, began during the restoration of the encaustic floor tiles. The study has broadened to inform day-to-day preventive care for the extensive fine art collections on display and the intricately decorated Gothic interiors, providing a powerful tool for the forthcoming restoration and renewal of the Palace. Different monitoring methods, using optical microscopy, macro-photography and software-based image analysis, were investigated. Qualitative analysis with SEM-EDX and optical microscopy allowed the identification of a number of anthropogenic, geogenic and biological sources of particulate matter, while quantitative results elucidated deposition trends, highlighting both seasonal and works-related impacts. Results indicated that mitigation measures taken to protect works of art and limit the diffusion and deposition of particulate matter on surrounding surfaces were successful. A new dust monitoring method, based on imaging of vertical surfaces and on a recently developed image analysis workflow (CHIJ) operated in open-source software (ImageJ) was trialled alongside more traditional methods for measuring dust deposition through collection of particulate matter on proxies. Results showed significant discrepancies between data acquired directly on wall painting surfaces as compared to horizontal glass slides. The advantages, limitations and complementarity of both monitoring methods were identified, and their potential contributions to the development of data-driven conservation approaches for heritage sites were assessed. The relatively low-tech methods and equipment used present useful and adapted tools for collection managers and conservators to inform their decision-making processes.     

Fear of Isolation and Perceived Affordances: The Spiral of Silence on Social Networking Sites Regarding Police Discrimination

The spiral of silence (SoS) framework elaborates the factors that determine whether individuals are willing to express their opinions in public. Although previous scholarship has examined differences in between face-to-face and computer-mediated communication, research studies have rarely tested how perceived affordances of the channel influence whether individuals express opinions or self-censor. In this study (N = 399), we examine several propositions of SoS within the context of discussing police discrimination on Facebook. To extend the theory’s relevance to social networking sites, we examined how users’ perceptions of network association, social presence, anonymity, and persistence related to opinion expression. Findings indicate support for some of the theory’s original tenets, as well as the role of multiple perceived affordances in determining whether people will express an opinion to their online social network. We discuss the implications for measuring and understanding political expression and silencing on social media as well as offline.     

School principals and racism: responding to Aveling

This study responds to Nado Aveling's call in ‘Anti-racism in Schools: A question of leadership?’ (Discourse: Studies in the Cultural Politics of Education, 2007, 28(1), 69–85) for further investigation into racism in Australian schools. Aveling's interview study concluded that an overwhelming number of school principals denied the presence of racism in their schools, and that there were no discernible differences in how principals in different schools constructed racism. In contrast, our research found that school principals' constructions of cultural racism are strongly influenced by their school contexts. We elucidate these differences examining the various intersections between race, class and religion deployed by principals in different sites, and argue for the utility of examining and theorising cultural racism using an intersectional approach. By bringing context into our analysis we provide a more nuanced insight into the different ways in which racism is constituted and understood by Australian school principals.     

Sustaining care: cultivating mindful practice in early years professional development

The practitioner’s own self is a resource in early childhood education and care (ECEC). It is proposed that an experiential training focusing on the ‘professional self’ helps to raise awareness of how psychological dispositions may impair or enhance quality of provision. A key concept in such training is emotional labour, explored with students through examples of ‘relational pedagogy’ and ‘attunement’ to the needs of children. The argument of this paper, underlying the training, is that the expectation of attunement encapsulates both the best and worst aspects of such labour. The research focuses on the introduction of mindfulness exercises into the training in order to sustain this attunement. It seeks the students’ responses to them and to the experience of the training overall. The paper concludes by recommending that such practices be incorporated into professional development whilst acknowledging that such interventions can only succeed where working conditions reflect a compassionate culture.     

“Why do dogs pant?”: Characteristics of parental explanations about science predict children's knowledge

Using a new method for examining parental explanations in a laboratory setting, the prompted explanation task, this study examines how characteristics of parental explanations about biology relate to children's knowledge. Parents (N = 148; M_age = 38; 84% female, 16% male; 67% having completed college) of children ages 7–10 (M_age = 8.92; 47% female, 53% male; 58% White, 9.5% Black, 9.5% Asian) provided answers to eight how and why questions about biology. Parents used a number of different approaches to address the questions, including providing more mechanistic responses to how questions and more teleological responses to why questions. The characteristics of parental explanations—most notably, how frequently parents provided correct responses—predicted children's performance on measures of verbal intelligence and biological knowledge. Additional exploratory analyses and implications for children's learning are discussed.     

The Online Studio: Cultures,Perceptions and Questions for the Future

We investigated the impact of the transition to online architectural design studios in response to the COVID-19 pandemic at the University of New South Wales in Sydney, Australia. The study focussed specifically on student and tutor perceptions of online design studio before the sudden transition to online delivery, and how those perceptions shifted through the initial months of online delivery. We consider the pedagogical context in which the shift to online teaching took place and the evident successes and failures in the early iterations of online studio. We discuss similar and contrasting perceptions in student and tutor groups and observe the changes in these perceptions prior to and after teaching and learning in online studios. The paper concludes with a series of questions directed to the architectural design studio teaching community regarding the apparent inevitability of a future in which both FTF and online-only studios are surpassed with hybrid design studios.     

Flexible phonics: a complementary ‘next generation’ approach for teaching early reading

We describe the rationale for- and content of- a freely available, novel, theoretically driven and evidence-based approach to improving the teaching of word reading in reception classrooms called ‘Flexible Phonics’. Flexible Phonics (FP) adds measurable value to-, rather than wholly replacing, existing synthetic phonics programmes. The rationale underpinning the FP approach concerns the need for multi-componential, maximally efficient, and truly generative approaches to allow early independence in reading for all children that apply to all words in the opaque spelling system of English. Building from these three principles, contemporary reading theory and evidence from cognitive science, linguistics and scaled educational implementation research, FP embodies a 5-element intervention differentiated to children's current attainment levels. FP augments mandated synthetic phonics through use of quality real books allowing ‘Direct Mapping’ of taught grapheme-phoneme correspondences, targeted oral vocabulary teaching, strategy-instruction on ‘Set-for-Variability’ and targeted preventative intervention for the most at-risk readers to then access wider FP content. Implications for policy and enhanced professional practice in English schools are considered.     

Equity Issues in Teaching and Teacher Education

Concerns about creating greater equity in education are often projected outside of teaching. Yet the creation by teachers of more equitable and inclusive educational experiences and opportunities can play an important part in wider struggles for social justice. We argue that equity must become a central dimension of teacher education to challenge the complex ways that insidious inequalities are reproduced in and through educational frameworks and practices.