title: Growing islands of interest: nurturing the development of young children’s working theories

authors: Davis, Keryn

subjects: working theories

abstract: This presentation draws on the work from a 2-year collaborative practitioner research project, Moments of wonder, every day events: how are young children theorising and making sense of their world. The project aimed to contribute perspectives to the discussion around the ways young children express and develop working theories, how practitioners understand these and how best to respond to this learning in five Playcentres (parent-led early childhood education settings) in Canterbury, New Zealand.
Children’s working theories, as described in Te Whāriki (the New Zealand early childhood education curriculum), are derived from Claxton’s view that knowledge consists of a large number of purpose-built situation specific packages called ‘mini theories’, and that ‘learning involved a gradual process of editing these mini theories so that they come to contain better knowledge and skill and be better located with respect to the area of experience for which they are suitable’. When children are engaged with others in complex thinking they are forming and strengthening their working theories.
In exploring working theories we recognise that children have many interests. Some of these are fleeting, while others are more connected or revisited more frequently by children. Over the course of our research, we have come to think of these interests as ‘islands’ and in doing so have adopted this as a metaphor for working theories. We were keen to see how we can grow some of these islands of interest: making them more complex, more connected, and more compelling to children. 
The research team explored the different ways opportunities can be created for children to express and develop working theories and the outcomes for children’s learning as a result. The presentation will focus on some of the strategies implemented and the ways these have contributed to children’s ‘working theories’ learning as the practitioner researchers attempted to build communities of thinkers and ‘wonderers’.

text: Growing islands of interest: nurturing the development of young children’s working theories This presentation draws on the work from a 2-year collaborative practitioner research project, Moments of wonder, every day events: how are young children theorising and making sense of their world. The project aimed to contribute perspectives to the discussion around the ways young children express and develop working theories, how practitioners understand these and how best to respond to this learning in five Playcentres (parent-led early childhood education settings) in Canterbury, New Zealand.
Children’s working theories, as described in Te Whāriki (the New Zealand early childhood education curriculum), are derived from Claxton’s view that knowledge consists of a large number of purpose-built situation specific packages called ‘mini theories’, and that ‘learning involved a gradual process of editing these mini theories so that they come to contain better knowledge and skill and be better located with respect to the area of experience for which they are suitable’. When children are engaged with others in complex thinking they are forming and strengthening their working theories.
In exploring working theories we recognise that children have many interests. Some of these are fleeting, while others are more connected or revisited more frequently by children. Over the course of our research, we have come to think of these interests as ‘islands’ and in doing so have adopted this as a metaphor for working theories. We were keen to see how we can grow some of these islands of interest: making them more complex, more connected, and more compelling to children. 
The research team explored the different ways opportunities can be created for children to express and develop working theories and the outcomes for children’s learning as a result. The presentation will focus on some of the strategies implemented and the ways these have contributed to children’s ‘working theories’ learning as the practitioner researchers attempted to build communities of thinkers and ‘wonderers’.

year: 2012

title: Investigation of the potential of repurposing medium-density fiberboard waste as an adsorbent for heavy metal ion removal

authors: Ranaweera, Kavitha H

subjects: MDF waste

abstract: Medium-density fiberboard (MDF) waste generation has increased steadily over the past decades, and therefore, the investigation of novel methods to recycle this waste is very important. The potential of repurposing MDF waste as an adsorbent for the treatment of Cd(II), Cu(II), Pb(II), and Zn(II) ions in water was investigated using MDF offcuts. The highest adsorption potential in single-metal ion solution systems was observed for Pb(II) ions. The experimental data of Pb(II) ions fit well with the Freundlich isotherm and pseudo-second-order kinetic models. Complexation and electrostatic interactions were identified as the adsorption mechanisms. The adsorption behavior of multi-metal ion adsorption systems was investigated by introducing Cd(II) ions as a competitive metal ion. The presence of the Cd(II) ions reduced the adsorption potential of Pb(II) ions, yet the preference for the Pb(II) ions remained. Regeneration studies were performed by using 0.1 M HCl as a regeneration agent for both systems. Even though a significant amount of adsorbed metal ions were recovered, the adsorption potential of the MDF was reduced in the subsequent adsorption cycles. Based on these results, MDF fines have the potential to be used as an economical adsorbent for remediation of wastewater containing heavy metal ions.

text: Investigation of the potential of repurposing medium-density fiberboard waste as an adsorbent for heavy metal ion removal Medium-density fiberboard (MDF) waste generation has increased steadily over the past decades, and therefore, the investigation of novel methods to recycle this waste is very important. The potential of repurposing MDF waste as an adsorbent for the treatment of Cd(II), Cu(II), Pb(II), and Zn(II) ions in water was investigated using MDF offcuts. The highest adsorption potential in single-metal ion solution systems was observed for Pb(II) ions. The experimental data of Pb(II) ions fit well with the Freundlich isotherm and pseudo-second-order kinetic models. Complexation and electrostatic interactions were identified as the adsorption mechanisms. The adsorption behavior of multi-metal ion adsorption systems was investigated by introducing Cd(II) ions as a competitive metal ion. The presence of the Cd(II) ions reduced the adsorption potential of Pb(II) ions, yet the preference for the Pb(II) ions remained. Regeneration studies were performed by using 0.1 M HCl as a regeneration agent for both systems. Even though a significant amount of adsorbed metal ions were recovered, the adsorption potential of the MDF was reduced in the subsequent adsorption cycles. Based on these results, MDF fines have the potential to be used as an economical adsorbent for remediation of wastewater containing heavy metal ions.

year: 2024

title: The spatial equity and sustainability of general practitioner services: A mixed methods analysis of the Waikato DHB region

authors: Whitehead, Jesse

subjects: spatial equity

abstract: The New Zealand Primary Health Care Strategy states that quality primary health care is the first level of contact with the health system and should be universally accessible. Effective primary health care is an essential component of health systems, and is associated with more equitable distributions of health outcomes. However, not all New Zealanders have ready access to primary health care. For instance, adult residents of the Waikato region, and in particular Māori, have higher levels of unmet need for primay care than others. Improving the spatial equity of health services is a key step in achieving health equity. Health systems should contribute to achieving health equity and maintaining sustainable and equitable services into the future. 

This thesis research examines the spatial equity and sustainability of general practitioner (GP) services in the Waikato DHB region, using a mixed-methods approach to identify not only where inequities exist, but why they occur. A conceptual framework establishes a foundation for examining spatial equity and sustainability in New Zealand. Next, a systematic literature review identifies common definitions and measures of spatial equity. Primary Health Organisation (PHO) enrolment data is used to examine patterns of patient enrolment at GP services, and a range of health needs indicators were assessed for their suitability in the New Zealand primary care context. These findings inform the development of a Geographic Information Systems (GIS) model of spatial accessibility that is tailored to the Waikato District Health Board (DHB) context. The GIS model is then used, in combination with in-depth qualitative interviews, to examine the spatial equity and sustainability of GP services in the Waikato DHB region. 

Key findings include that spatial equity is commonly defined as a ‘need-based distribution of resources’, which can be quantified using a range of statistical and geospatial measures and techniques. PHO enrolment analysis revealed that most patients do not enrol with their closest service, and that the size of the ‘catchment area’ served by GP clinics varies with rurality. Analysis of indicators of health need suggest that ‘Ambulatory Sensitive Hospitalisations’ are a robust indicator; however, area-level socioeconomic deprivation is also strongly associated with other indicators of need and data is more widely available to researchers. Mixed-methods analysis suggests that GP services are not distributed equitably within the Waikato DHB region and that key barriers to access include the affordability, appropriateness, and availability of services. New Zealand’s history of colonisation and discrimination are identified as fundamental drivers of health inequity. Furthermore, population growth and ageing suggest that current levels of access to GP services are unlikely to be maintained in the future, while participants identify key economic, professional, organisation, and social dimensions that influence service sustainability in New Zealand.

text: The spatial equity and sustainability of general practitioner services: A mixed methods analysis of the Waikato DHB region The New Zealand Primary Health Care Strategy states that quality primary health care is the first level of contact with the health system and should be universally accessible. Effective primary health care is an essential component of health systems, and is associated with more equitable distributions of health outcomes. However, not all New Zealanders have ready access to primary health care. For instance, adult residents of the Waikato region, and in particular Māori, have higher levels of unmet need for primay care than others. Improving the spatial equity of health services is a key step in achieving health equity. Health systems should contribute to achieving health equity and maintaining sustainable and equitable services into the future. 

This thesis research examines the spatial equity and sustainability of general practitioner (GP) services in the Waikato DHB region, using a mixed-methods approach to identify not only where inequities exist, but why they occur. A conceptual framework establishes a foundation for examining spatial equity and sustainability in New Zealand. Next, a systematic literature review identifies common definitions and measures of spatial equity. Primary Health Organisation (PHO) enrolment data is used to examine patterns of patient enrolment at GP services, and a range of health needs indicators were assessed for their suitability in the New Zealand primary care context. These findings inform the development of a Geographic Information Systems (GIS) model of spatial accessibility that is tailored to the Waikato District Health Board (DHB) context. The GIS model is then used, in combination with in-depth qualitative interviews, to examine the spatial equity and sustainability of GP services in the Waikato DHB region. 

Key findings include that spatial equity is commonly defined as a ‘need-based distribution of resources’, which can be quantified using a range of statistical and geospatial measures and techniques. PHO enrolment analysis revealed that most patients do not enrol with their closest service, and that the size of the ‘catchment area’ served by GP clinics varies with rurality. Analysis of indicators of health need suggest that ‘Ambulatory Sensitive Hospitalisations’ are a robust indicator; however, area-level socioeconomic deprivation is also strongly associated with other indicators of need and data is more widely available to researchers. Mixed-methods analysis suggests that GP services are not distributed equitably within the Waikato DHB region and that key barriers to access include the affordability, appropriateness, and availability of services. New Zealand’s history of colonisation and discrimination are identified as fundamental drivers of health inequity. Furthermore, population growth and ageing suggest that current levels of access to GP services are unlikely to be maintained in the future, while participants identify key economic, professional, organisation, and social dimensions that influence service sustainability in New Zealand.

year: 2020