A Characterisation Study on Modern Bronze Sculpture: The Artistic Patinas of Nado Canuti

Artistic patination is a traditional colouring technique for metal sculpture, employed by artists in ancient and modern times for aesthetic purposes. Today, knowledge of the artistic value and the chemistry of this superficial chromatic layer, called ‘artistic patina’, can be successfully acquired through a close collaboration between living artists, foundry artisans, and scientists. Starting from several interviews with the Italian artist Nado Canuti and foundry artisans, specific information was gathered about patination methods and the artist’s attitude towards materials restoration. Afterwards, the patinas most used by Canuti were reproduced to study their nature before any ageing or degradation. Their chromatic values, morphologies, and compositions were studied employing a range of techniques such as colour measurements, scanning electron microscopy with energy dispersive X-ray spectroscopy, and micro-Raman spectroscopy. The collected data revealed the formation of main compounds (cuprite, cassiterite, rouaite, chalcocite, isocubanite, and ferroxyhite) and additional compounds (atacamite and CN-containing compound). The scientific results, as well as the artist’s statements concerning the patinas’ significance, maintenance, and conservation, will contribute towards the future care and preservation of Canuti’s sculptures.     

The practice of Action Research on health in Latin America: a systematic review

ABSTRACT

Action research is an important methodology that promotes participatory processes in the community, enhancing community networks and empowering people to define their own health and generate actions. Here, we performed a systematic review using the Scopus, Web of Science (WoS) and SciELO databases to identify the studies carried out on health in Latin America under the category ‘Action Research’. The search terms used were ‘Action Research’, ‘Health’ and ‘Latin America’. We identified the following three areas of particular relevance: (a) action research is a necessary strategy to make health actions more efficient by adapting institutional actions to specific realities; (b) action research can increase the visibility of excluded groups and demonstrates the importance of being heard; and (c) action research can promote community empowerment by considering community members as knowledge agents who can transform their own reality. We report that action research processes which highlight the emancipatory and democratizing potential of community participation are subject to controversy regarding the production of and access to knowledge and the issues related to health. However, action research is not usually used in the development and implementation of institutional health interventions.     

Weeding an Outdated Collection in an Automated Retrieval System

In 2008 Grand Valley State University Libraries began a large weeding project in the automated retrieval system (ARS) at its Steelcase Library. An estimated 19,000 volumes were to be removed from the ARS. A systematic weeding of the ARS had never been undertaken and it presented a number of logistical challenges. This article discusses the process that was devised for this large weeding project.     

Student perceptions of personalised learning: development and validation of a questionnaire with regional secondary students

This project sought to evaluate regional students’ perceptions of their readiness to learn, assessment processes, engagement, extent to which their learning is personalised and to relate these to academic efficacy, academic achievement, and student well-being. It also examined teachers’ perceptions of students’ readiness to learn, the assessment process, engagement, and the extent to which students’ learning is personalised. The sample involved students in years 7–10 from six Victorian secondary schools. An instrument Personalised Learning Environment Questionnaire (PLQ) was developed to measure students’ perceptions of the factors effecting the implementation of Personalised Learning Plans (PLPs). It employed the latest scales to assess a range of PLP indicator variables, with all scales modified for use in an Australian context, and the total number of items kept to a minimum. Only scales more sensitive to PLPs were used to minimise the length of the instrument. There were three outcome variables: academic efficacy, academic achievement, and student well-being. The PLPs were assessed through scales that assess several contributing, distinct dimensions: selfdirected learning readiness, personal achievement, goal orientation, learning environment, personalised teaching and learning initiatives, curriculum entitlement and choice, and perceptions of assessment for learning. The trail PLQ was administered to 220 students, resulting in a 19 scale questionnaire with three or four items per scale. This paper reveals good data to model fit for the majority of items and each scale had good reliability. The paper describes the analytic techniques and results, how the instrument was refined and identifies common and uncommon student perceptions based on a post hoc analysis. The main study consisted of 2,407 students from four schools in the Bendigo Education Plan. They responded to this refined 19 scale version of the PLQ that was developed from the trial PLQ. All scales had satisfactory internal consistency reliability.     

Young Chinese Australians' subjectivities of ‘health’ and ‘(un)healthy bodies’

Young people with English as an Additional Language/Dialect backgrounds are often identified in public health messages and popular media as ‘bodies at risk’ because they do not conform to the health regimens of contemporary Western societies. With increasing numbers of Chinese students in Australian schools, it is necessary to advance teachers' understandings of the ways in which these young people negotiate notions of ‘health’ and ‘(un)healthy bodies’. This paper explores the ways in which young Chinese Australians' understand health and (un)healthy bodies. The data upon which this paper focuses were drawn from a larger scale study underpinned by critical, interpretive, ethnographic methods. The participants in this study were 12 young Chinese Australians, aged 10–15 years, from two schools. Photographs of a variety of bodies were sourced from popular magazines and used as a means of interview elicitation. The young people were invited to comment on the photographs and discuss what ‘health’ and the notion of a ‘(un)healthy body’ meant to them. Foucault's concepts of discursive practice and normalisation are used alongside Chinese concepts of holistic paradigms and Wen–Wu to unpack the young people's subjectivities on health and (un)healthy bodies. The findings invite us to move beyond Western subjectivities of health and (un)healthy bodies and highlight the multidimensional and diverse perspectives espoused by some of the young Chinese Australians in this study. The research findings can inform future policy and practice relevant to the exploration of health and (un)healthy bodies in health and physical education and health and physical education teacher education.     

“Nothing is impossible”: characteristics of Hispanic females participating in an informal STEM setting

Cultural Studies of Science Education - Factors that influence the underrepresentation of females in STEM careers begin early in childhood when gender biases and stereotypes emerge. Stereotypes...     

The Process and Impact of the Infant/Toddler Credential as Professional Development: Reflections from Multiple Perspectives and Recommendations for Policy

Early childhood educators worldwide all strive to improve the quality of care and education for young children through sustainable pathways. One such pathway is professional development (PD). In the United States, ongoing PD has been recognized as critical to enhancing practitioners’ professional competence. Situated within the broader context of early childhood professional development systems, this study examined the New Jersey Infant/Toddler Credential (NJITC) as a case of PD. Specifically, we evaluated the effectiveness of the NJITC as PD by investigating its process as well as impact on the participating practitioners’ professional growth and practice from multiple perspectives: written reflections from a course instructor and a childcare center director; survey reflective responses from 12 practitioners; and informal conversations with childcare center directors, course instructors, field supervisors, and practitioners. The findings revealed that having the NJITC coursework offered through an onsite PD model and supported by a state-based scholarship program provided much needed incentives to encourage participation. It also resulted in improved professional growth and practice among the participating practitioners. However, it is only to the extent that the infant/toddler practitioners continue to engage in continuous PD beyond the ITC coursework will they be able to keep themselves abreast of the state of knowledge and best practices from which to further enhance their professional competence. In light of the process and impact of the NJITC on practitioners’ acquisition of specialized knowledge, skills, and dispositions to effectively work with infants and toddlers, implications and recommendations for policy are discussed.     

Nanolime suspensions applied on natural lithotypes: The influence of concentration and residual water content on carbonatation process and on treatment effectiveness

Ca(OH)2 particles with submicrometric dimensions (nanolimes) are recently introduced in cultural heritage conservation, in order to improve lime treatments. Lime nanoparticles are typically produced by a chemical precipitation process in supersaturated aqueous solutions of the reactants (calcium chloride [CaCl₂] and sodium hydroxide [NaOH]); water is then partially substituted with 2-propanol in order to improve stability and to reduce a random orientation of the particles. Aim of the present work is to analyse the influence of the nanolime suspensions concentration on the carbonatation process, in relation to the residual water content too. The obtained lime nanoparticles are characterised by X-rays diffraction (XRD) and profile analysis. Afterwards, the influence of the suspension concentration on stones protective treatments is evaluated: alcoholic nanolime suspensions, characterised by different concentration values, are applied on several natural lithotypes. Standard tests are performed to estimate the superficial consolidation and the protective treatment effectiveness: “Scotch tape test” (STT) and capillarity test. Porosimetric investigations are performed too.