title: How fractional are super-capacitors? Electrochemical Impedance Spectroscopy (EIS) measurements

authors: Wildschut, Gordan Leslie

abstract: Super-capacitors are seeing more frequent use in modern electronic designs. Measuring the impedance of such an energy storage device is a good way to characterise how it will behave in real world situations. Therefore this study aims to investigate the present methods of measuring impedance of super-capacitors, with a focus on characterising their properties.
There also seems to be an increasing need for better and more cost effective equipment to measure these devices. Many options exist, and some are well suited to the task however most instruments are either too complicated and difficult to use or too expensive (in the 10’s of thousands of dollars) or a combination of both.
This work presents a design for such an instrument which can perform these measurements at a fraction of the cost. The functionality and performance are described and compared to current commercial options. Super-capacitors of varying storage sizes and brands are measured and characterised, and discussed in comparison to batteries.

text: How fractional are super-capacitors? Electrochemical Impedance Spectroscopy (EIS) measurements Super-capacitors are seeing more frequent use in modern electronic designs. Measuring the impedance of such an energy storage device is a good way to characterise how it will behave in real world situations. Therefore this study aims to investigate the present methods of measuring impedance of super-capacitors, with a focus on characterising their properties.
There also seems to be an increasing need for better and more cost effective equipment to measure these devices. Many options exist, and some are well suited to the task however most instruments are either too complicated and difficult to use or too expensive (in the 10’s of thousands of dollars) or a combination of both.
This work presents a design for such an instrument which can perform these measurements at a fraction of the cost. The functionality and performance are described and compared to current commercial options. Super-capacitors of varying storage sizes and brands are measured and characterised, and discussed in comparison to batteries.

year: 2020

title: Home and heterosexuality in Aotearoa New Zealand: The spaces and practices of DIY and home renovation

authors: Morrison, Carey-Ann

subjects: DIY and home renovation

abstract: The ways in which domestic spaces function as sites of sexual subjectivity and relationship formation for heterosexual couples is an understudied area in geography. One way to address this gap in knowledge is to focus attention on the varied ways in which heterosexual couples use the practices and spaces of do-it-yourself (DIY) and home renovation to construct, materialise and sometimes disrupt their subjectivities and relationships. Taking into consideration the significance of home ownership in New Zealand, I argue that the practices of DIY and home renovations are an everyday event that can occur both within the dwelling and beyond. A focus on heterosexuality, home, DIY and home renovation encourages a more nuanced reading of the mutually constitutive relationship between bodies and spaces.

text: Home and heterosexuality in Aotearoa New Zealand: The spaces and practices of DIY and home renovation The ways in which domestic spaces function as sites of sexual subjectivity and relationship formation for heterosexual couples is an understudied area in geography. One way to address this gap in knowledge is to focus attention on the varied ways in which heterosexual couples use the practices and spaces of do-it-yourself (DIY) and home renovation to construct, materialise and sometimes disrupt their subjectivities and relationships. Taking into consideration the significance of home ownership in New Zealand, I argue that the practices of DIY and home renovations are an everyday event that can occur both within the dwelling and beyond. A focus on heterosexuality, home, DIY and home renovation encourages a more nuanced reading of the mutually constitutive relationship between bodies and spaces.

year: 2012

title: Recognition and indigenizing official statistics: Reflections from Aotearoa New Zealand and Australia

authors: Kukutai, Tahu

subjects: Indigenou

abstract: In First World colonised nations such as Aotearoa New Zealand and Australia, population statistics form the evidentiary base for how Indigenous peoples are known and `managed' through state policy approaches. Yet, population statistics are not a neutral counting. Decisions of what and how to count reflect particular assumptions about Indigenous identity, ways of life and wellbeing. More often than not, the requirements and priorities of government take precedence over the informational needs and priorities of Indigenous communities. Whereas National Statistics Offices (NSOs) once rendered Indigenous peoples invisible in official statistics through non-recognition, the more pressing problem in the 21st century is that of misrecognition. In seeking to move beyond statistical misrecognition, we propose a set of guiding principles for bringing government reporting frameworks and Indigenous concepts of identity and wellbeing into closer proximity. We argue that a principled approach to collecting, disseminating and analysing Indigenous data not only avoids misrecognising Indigenous peoples but enhances the functionality of official statistics for Indigenous peoples and NSOs alike.

text: Recognition and indigenizing official statistics: Reflections from Aotearoa New Zealand and Australia In First World colonised nations such as Aotearoa New Zealand and Australia, population statistics form the evidentiary base for how Indigenous peoples are known and `managed' through state policy approaches. Yet, population statistics are not a neutral counting. Decisions of what and how to count reflect particular assumptions about Indigenous identity, ways of life and wellbeing. More often than not, the requirements and priorities of government take precedence over the informational needs and priorities of Indigenous communities. Whereas National Statistics Offices (NSOs) once rendered Indigenous peoples invisible in official statistics through non-recognition, the more pressing problem in the 21st century is that of misrecognition. In seeking to move beyond statistical misrecognition, we propose a set of guiding principles for bringing government reporting frameworks and Indigenous concepts of identity and wellbeing into closer proximity. We argue that a principled approach to collecting, disseminating and analysing Indigenous data not only avoids misrecognising Indigenous peoples but enhances the functionality of official statistics for Indigenous peoples and NSOs alike.

year: 2015