title: Achieving sub-millimetre precision with a solid-state full-field heterodyning range imaging camera

authors: Dorrington, Adrian A.

subjects: range

abstract: We have developed a full-field solid-state range imaging system capable of capturing range and intensity data simultaneously for every pixel in a scene with sub-millimetre range precision. The system is based on indirect time-of-flight measurements by heterodyning intensity-modulated illumination with a gain modulation intensified digital video camera. Sub-millimetre precision to beyond 5 m and 2 mm precision out to 12 m has been achieved. In this paper, we describe the new sub-millimetre class range imaging system in detail, and review the important aspects that have been instrumental in achieving high precision ranging. We also present the results of performance characterization experiments and a method of resolving the range ambiguity problem associated with homodyne and heterodyne ranging systems.

text: Achieving sub-millimetre precision with a solid-state full-field heterodyning range imaging camera We have developed a full-field solid-state range imaging system capable of capturing range and intensity data simultaneously for every pixel in a scene with sub-millimetre range precision. The system is based on indirect time-of-flight measurements by heterodyning intensity-modulated illumination with a gain modulation intensified digital video camera. Sub-millimetre precision to beyond 5 m and 2 mm precision out to 12 m has been achieved. In this paper, we describe the new sub-millimetre class range imaging system in detail, and review the important aspects that have been instrumental in achieving high precision ranging. We also present the results of performance characterization experiments and a method of resolving the range ambiguity problem associated with homodyne and heterodyne ranging systems.

year: 2007

title: Geographical education in New Zealand during the last decade

authors: Chalmers, Lex

abstract: The restructuring of the national economy of New Zealand in the last decade of the 20th century left its mark on education generally, with some quite specific consequences for geographical education in the secondary sector. This review of commentaries and research on geographical education considers debates about curriculum development, the changing assessment regime and the influence of geography educators on contemporary pedagogy.

text: Geographical education in New Zealand during the last decade The restructuring of the national economy of New Zealand in the last decade of the 20th century left its mark on education generally, with some quite specific consequences for geographical education in the secondary sector. This review of commentaries and research on geographical education considers debates about curriculum development, the changing assessment regime and the influence of geography educators on contemporary pedagogy.

year: 2003

title: Ngā kura a Hineteiwaiwa: The embodiment of Mana Wahine in Māori fibre Arts

authors: Campbell, Donna

subjects: Mana Wahine

abstract: Imagine you are on a continuum of past present and future, in the present while connected to the past and creating for the future. Kairaranga  are constantly in this experience through engaging with the materiality of the practices of raranga and raranga whatu.  
The key focus of this thesis is to provide theoretical discussion of the raranga and whatu practices that are the creative component of this doctoral research.  The theories that inform the analysis are Kaupapa Māori and Mana Wahine both of which, like raranga, are organic to this place, Aotearoa , and have grown as descendants of Papatūānuku  and Ranginui . The connection between these theories and the creative practices of raranga and whatu form a cultural praxis through which I argue enables the transformative power of raranga and whatu practices.  This too is the essence of Te Whare Pora, a weaving house that embraces kairaranga both conceptually and materially and which provides the approach to the project. Te Whare Pora is a place of knowledge and a place of practice. Like Kaupapa Māori and Mana Wahine theories it is a cultural form and expression of praxis. As kairaranga we create taonga  informed by the creative genius of our tūpuna  from the native plants of the land. These ageless practices and the taonga we create are permeated with our own present realities. The taonga then carry this tūpuna knowledge into the future in multiple forms. To highlight this, I explore a range of practices that exemplify raranga and raranga whatu as cultural embodiment.  This is articulated through notions of raranga as an expression of cultural bodies of knowledge, creative practice and regenerative praxis that span the past, present and future.  As such, this thesis is an expression of the creative journey of theory and practice inspired by tūpuna knowledge in the art forms of raranga and raranga whatu. The practices of raranga and raranga whatu not only transform the materials the kairaranga is using, but also the kairaranga themselves. These practices become self-affirming, culturally affirming and ultimately decolonizing.

text: Ngā kura a Hineteiwaiwa: The embodiment of Mana Wahine in Māori fibre Arts Imagine you are on a continuum of past present and future, in the present while connected to the past and creating for the future. Kairaranga  are constantly in this experience through engaging with the materiality of the practices of raranga and raranga whatu.  
The key focus of this thesis is to provide theoretical discussion of the raranga and whatu practices that are the creative component of this doctoral research.  The theories that inform the analysis are Kaupapa Māori and Mana Wahine both of which, like raranga, are organic to this place, Aotearoa , and have grown as descendants of Papatūānuku  and Ranginui . The connection between these theories and the creative practices of raranga and whatu form a cultural praxis through which I argue enables the transformative power of raranga and whatu practices.  This too is the essence of Te Whare Pora, a weaving house that embraces kairaranga both conceptually and materially and which provides the approach to the project. Te Whare Pora is a place of knowledge and a place of practice. Like Kaupapa Māori and Mana Wahine theories it is a cultural form and expression of praxis. As kairaranga we create taonga  informed by the creative genius of our tūpuna  from the native plants of the land. These ageless practices and the taonga we create are permeated with our own present realities. The taonga then carry this tūpuna knowledge into the future in multiple forms. To highlight this, I explore a range of practices that exemplify raranga and raranga whatu as cultural embodiment.  This is articulated through notions of raranga as an expression of cultural bodies of knowledge, creative practice and regenerative praxis that span the past, present and future.  As such, this thesis is an expression of the creative journey of theory and practice inspired by tūpuna knowledge in the art forms of raranga and raranga whatu. The practices of raranga and raranga whatu not only transform the materials the kairaranga is using, but also the kairaranga themselves. These practices become self-affirming, culturally affirming and ultimately decolonizing.

year: 2019