Waste avoidance and reuse strategies for residential buildings in Australia

Introduction The Beyond Waste Fund is an initiative managed by Sustainability Victoria to help businesses avoid waste sent to landfill. The fund supports innovations that focus on waste avoidance, reduction and reuse, leading to improved resource management, and better environmental outcomes. As part of the Beyond Waste Fund, a partnership between Burbank Australia, the Housing Industry Association (HIA), and the Centre for Design at RMIT University was established to conduct a research study aiming at reducing the waste generated in the construction phase of building by the volume residential building sector in Australia. The major steps in this project were to: 1.    Establish a waste audit methodology 2.    Undertake and assess an initial waste audit on a typical volume-built house 3.    Develop waste avoidance strategies 4.    Assess the efficacy of waste avoidance strategies by undertaking a final waste audit on a typical volume build-house, which utilises the identified strategies. This report presents the final outcomes of this study, outlining the goal and scope of the study, the waste audit methodology and initial audit results, waste avoidance strategies, final audit results and an assessment on the efficacy and implementation of waste avoidance strategies

Developing radical-digital interventions to tackle loneliness amongst the elderly

Loneliness is a growing issue amongst older people and one popular approach to tackling it is by developing non-medical interventions such as befriending services, mentoring provisions, social clubs, etc. Our analysis reveals that these interventions are predominantly incremental-physical in nature and that there is a lack of radical-digital ones. In this paper we discuss the properties of digital technologies that can be potentially helpful for the elderly and we suggest that social innovation provides a robust theoretical framework to conceive radical-digital loneliness interventions. We also draw parallels between loneliness interventions based on social innovation and the emerging ‘sharing economy’ in the digital world and discuss the role of third paradigm of HCI research in this area

Fostering social innovation for active ageing

Age-related loneliness is a major social issue as it is increasing alongside an upward global population trend which predicts that nearly 22% of the world population will be aged 60 years or over by 2050 (Rutherford, 2012). This ‘silver tsunami’ (Cacioppo and Patrick, 2008) represents an unprecedented growth of the elderly population and is likely to exert socioeconomic pressures globally in the form of healthcare needs etc. (Dychtwald and Flower, 1989, O'Connor, 2014). Recent surveys conducted in many parts of the world such as the USA, the UK and Japan etc. reveal this plight of the elderly as many older people report feeling lonely ‘often’ (Hawkley and Cacioppo, 2007, Marsh, 2014, Kim et al., 2009). The examination of current methods and techniques aimed at combating age-related loneliness in order to recognize any ‘patterns’ (Alexander et al., 1977) reveals that the current thinking around developing such interventions predominantly adopts an incremental approach (Sharma et al., 2015). Sharma et al. highlight a gap in knowledge exemplified by the lack of radical-digital interventions, and suggest that more experimentation is required in this area to understand the strengths, or more to the point the limitations of radical-digital interventions (2015). In this paper, we recognise that the Activity Theory of Ageing (ATA) (Havighurst, 1961) provides a good foundation for developing effective radical-digital strategies for tackling loneliness amongst older adults and we highlight its potential and restraints in this area. The application of ATA looks to encourage or support older adults in remaining active beyond middle age by finding replacements for ‘lost roles’ and social positions (Diggs, 2007). Because ATA is fundamentally fixated on the individual as a unit of analysis, its desired ‘social’ applicability is naturally then, restricted. We propose that the social restraints of ATA can be eased by bringing social innovation into the equation, which by its very nature, focuses on fostering communal environments that are conducive to bottom-up innovation (Manzini and DESIS Network, 2014). We argue that this shift in focus from ‘an individual’ to ‘the society’ can potentially involve previously unengaged stakeholders in innovative and unimagined ways and provide ATA with a means to explore wider contexts. We examine both these theoretical frameworks to discuss how a hybridisation of ATA and Social Innovation can allow for a significant movement away from the dominant incremental approach to developing loneliness interventions. We call this hybrid approach Social Innovation for Active Ageing (SIFAA). Having discussed how we developed the SIFAA approach, we discuss the findings from our Action Research project where we developed a radical-digital loneliness intervention for older adults based on SIFAA. Our prototype involves getting older adults in the UK, to speak to young students in India via videoconferencing in order to help the students improve their English-speaking skills. The contributions of our paper are two-fold. Theoretically, we contribute to the extension of ATA’s and Social Innovation's capabilities by combining them together, and on a practical note, we share actionable insights from our operationalising of a SIFAA-based radical-digital loneliness intervention

Systematic review of greenhouse gas emissions for different fresh food categories

This paper presents the results of a systematic literature review of greenhouse gas emissions for different food categories from life cycle assessment (LCA) studies, to enable streamline calculations that could inform dietary choice. The motivation for completing the paper was the inadequate synthesis of food greenhouse gas emissions available in the public domain. The paper reviewed 369 published studies that provided 1,718 global warming potential (GWP) values for 168 varieties of fresh produce. A meta-analysis of the LCA studies was completed for the following categories: fresh vegetables (root vegetables, brassica, leaves and stems); fresh fruits, (pepo, hesperidium, true berries, pomes, aggregates fruits and drupes); staples (grains, legumes, nuts, seeds and rice); dairy (almond/coconut milk, soy milk, dairy milk, butter and cheese); non-ruminant livestock (chicken, fish, pork); and ruminant livestock (lamb and beef). The meta-analysis indicates a clear greenhouse gas hierarchy emerging across the food categories, with grains, fruit and vegetables having the lowest impact and meat from ruminants having the highest impact. The meta-analysis presents the median, mean, standard deviation, upper and lower quartile, minimum and maximum results for each food category. The resultant data enables streamline calculations of the global warming potential of human diets, and is illustrated by a short case study of an Australian family’s weekly shop. The database is provided in the Appendix as a resource for practitioners. The paper concludes with recommendations for future LCA studies to focus upon with respect to content and approach

Invariant Imbedded T-Matrix Method for Axial Symmetric Hydrometeors with Extreme Aspect Ratios

The single-scattering properties (SSPs) of hydrometeors are the fundamental quantities for physics-based precipitation retrievals. Thus, efficient computation of their electromagnetic scattering is of great value. Whereas the semi-analytical T-Matrix methods are likely the most efficient for nonspherical hydrometeors with axial symmetry, they are not suitable for arbitrarily shaped hydrometeors absent of any significant symmetry, for which volume integral methods such as those based on Discrete Dipole Approximation (DDA) are required. Currently the two leading T-matrix methods are the Extended Boundary Condition Method (EBCM) and the Invariant Imbedding T-matrix Method incorporating Lorentz-Mie Separation of Variables (IITM+SOV). EBCM is known to outperform IITM+SOV for hydrometeors with modest aspect ratios. However, in cases when aspect ratios become extreme, such as needle-like particles with large height to diameter values, EBCM fails to converge. Such hydrometeors with extreme aspect ratios are known to be present in solid precipitation and their SSPs are required to model the radiative responses accurately. In these cases, IITM+SOV is shown to converge. An efficient, parallelized C++ implementation for both EBCM and IITM+SOV has been developed to conduct a performance comparison between EBCM, IITM+SOV, and DDSCAT (a popular implementation of DDA). We present the comparison results and discuss details. Our intent is to release the combined ECBM IITM+SOV software to the community under an open source license

Pilot Evaluation of an Online Weight Management Programme

This intervention examined the efficacy of a six-week online weight loss programme. Students and staff of a third level institution (n=183) were recruited to the programme which provided individualised dietary advice for weight loss. Eighty-five participants (mean age 29.7 years, mean BMI 28.9kg/m2, 33% male) met the minimum inclusion criterion of logging on to the study website at least twice. All participants who completed the full six-week programme lost weight (n=31), with significant reductions in mean weight (2.8kg), BMI (0.9kg/m2) and waist circumference (4.1cm) observed between the start and end of the programme (all P5% of their bodyweight, with reductions in biscuit and alcohol consumption being most predictive of weight loss. These findings suggest that individualised online dietary advice is effective in achieving short-term weight loss, especially in males

The greenhouse gas profile of a “Hungry Planet”:quantifying the impacts of the weekly food purchases including associated packaging and food waste of three families

The United Nations Food and Agricultural Organisation (FAO) have estimated that 1.3 billion tonnes of food is wasted across the supply chain, while food security emerges as one of the leading challenges facing a growing global population. Life cycle assessment (LCA) can illustrate the environmental implications of food production, consumption and waste. In 2005, Peter Menzel and Faith D’Aluisio presented a photographic study in “Hungry Planet – What the World Eats” documenting what thirty families across twenty-four countries ate during the course of one week. The weekly food purchasing inventories of three of these families have been combined with LCA data to report the greenhouse gas intensity of these food purchases. The greenhouse gas emission profile including those of 128 varieties of fresh food, along with data on packaging material production and household food waste, have been used in the calculations. The paper will present the findings illustrating the contribution each component has: food, packaging and food waste; and will also discuss the implications for food packaging desig

Design for behaviour change as a driver for sustainable innovation : challenges and opportunities for implementation in the private and public sectors

Over the last decade, design for behaviour change has become increasingly recognised as a strategy for enabling social change. Despite this, we are far from understanding its implementation, especially through the private and public sectors. This study has surveyed private and public sector stakeholders with regard to their current knowledge of, and approach to, design for behaviour change. The aim was to identify the challenges for professional stakeholders in understanding, accessing and implementing design for behaviour change. Underpinned by a literature review of design for behaviour change theories and approaches, an online survey and two focus groups with private and public sector stakeholders were conducted with particular focus on small and medium size enterprises (SMEs). The results identified that there is a significant disconnect between available theoretical knowledge of design for behaviour change and its practical implementation. Reasons for this include a lack of awareness and common language, of evidence based examples, and of evaluation methods and inter-sector collaborations. In response, a set of recommendations has been developed to propose ways forward for the wider understanding and application of design for behaviour change