title: The Waikato range imager

authors: Cree, Michael J.

subjects: range imaging

abstract: We are developing a high precision simultaneous full-field acquisition range imager. This device measures range with sub millimetre precision in range simultaneously over a full-field view of the scene. Laser diodes are used to illuminate the scene with amplitude modulation with a frequency of 10MHz up to 100 MHz. The received light is interrupted by a high speed shutter operating in a heterodyne configuration thus producing a low-frequency signal which is sampled with a digital camera. By detecting the phase of the signal at each pixel the range to the scene is determined. We show 3D reconstructions of some viewed objects to demonstrate the capabilities of the ranger.

text: The Waikato range imager We are developing a high precision simultaneous full-field acquisition range imager. This device measures range with sub millimetre precision in range simultaneously over a full-field view of the scene. Laser diodes are used to illuminate the scene with amplitude modulation with a frequency of 10MHz up to 100 MHz. The received light is interrupted by a high speed shutter operating in a heterodyne configuration thus producing a low-frequency signal which is sampled with a digital camera. By detecting the phase of the signal at each pixel the range to the scene is determined. We show 3D reconstructions of some viewed objects to demonstrate the capabilities of the ranger.

year: 2006

title: Book review: News 2.0 Can Journalism Survive the Internet?

authors: Lealand, Geoff

subjects: book review

abstract: This article reviews the book: “News 2.0 Can Journalism Survive the Internet?”, by Martin Hirst.

text: Book review: News 2.0 Can Journalism Survive the Internet? This article reviews the book: “News 2.0 Can Journalism Survive the Internet?”, by Martin Hirst.

year: 2011

title: The chronology of Waikato pā: A spatio-temporal investigation of pā in the middle Waikato basin

authors: McBride, Rowan

subjects: pā

abstract: This study considers the chronology of pā construction, proliferation, and development within the 
Middle Waikato Basin through a spatio-temporal investigation of palisade construction activity as 
identified at six pā (fortified places). The chronological approach applied in this thesis uses 14C 
wiggle-match dating to provide an accurate and precise calendar date for the felling of a tree 
(Felling Date) used to construct a palisade defence at a pā. These Felling Dates are interpreted using 
the theory of time perspectivism, focusing on three distinct scales of analysis: Event, Local, and 
Regional. The event scale of analysis successfully produced twenty high-precision felling dates on 
posts recovered from Lake Mangakaware 1 (MA1), Lake Mangakaware 2 (MA2), Lake Mangahia 
(MGA), Taraheke Pā (TAR), Te Uapata Pā (TEU) and Lake Rotokauri (ROT). The local scale 
analysis utilised these felling dates to track the development of the identified palisade defences 
over time, identifying multiple palisade construction phases, representing construction, repair and 
redevelopment episodes at MA1, MA2, MGA, TAR and TEU. Finally, the regional scale analysis 
integrated this evidence into a broader chronological framework, identifying shared episodes of 
palisade construction activity within the Middle Waikato Basin. This analysis highlights three 
critical periods of proposed socio-political stress and stability between the late fifteenth and early 
nineteenth centuries, related to hypothesised influential variables from the broader cultural and 
archaeological landscape that are proposed to be responsible for the emergence, proliferation and 
development of pā over time.

text: The chronology of Waikato pā: A spatio-temporal investigation of pā in the middle Waikato basin This study considers the chronology of pā construction, proliferation, and development within the 
Middle Waikato Basin through a spatio-temporal investigation of palisade construction activity as 
identified at six pā (fortified places). The chronological approach applied in this thesis uses 14C 
wiggle-match dating to provide an accurate and precise calendar date for the felling of a tree 
(Felling Date) used to construct a palisade defence at a pā. These Felling Dates are interpreted using 
the theory of time perspectivism, focusing on three distinct scales of analysis: Event, Local, and 
Regional. The event scale of analysis successfully produced twenty high-precision felling dates on 
posts recovered from Lake Mangakaware 1 (MA1), Lake Mangakaware 2 (MA2), Lake Mangahia 
(MGA), Taraheke Pā (TAR), Te Uapata Pā (TEU) and Lake Rotokauri (ROT). The local scale 
analysis utilised these felling dates to track the development of the identified palisade defences 
over time, identifying multiple palisade construction phases, representing construction, repair and 
redevelopment episodes at MA1, MA2, MGA, TAR and TEU. Finally, the regional scale analysis 
integrated this evidence into a broader chronological framework, identifying shared episodes of 
palisade construction activity within the Middle Waikato Basin. This analysis highlights three 
critical periods of proposed socio-political stress and stability between the late fifteenth and early 
nineteenth centuries, related to hypothesised influential variables from the broader cultural and 
archaeological landscape that are proposed to be responsible for the emergence, proliferation and 
development of pā over time.

year: 2024