title: Claiming spaces: Prioritising Maaori worldview

authors: Penehira, Mera

subjects: Maori

abstract: Ohomairangi Trust was established as a provider of early intervention services in February 2002. It is funded and accredited by the Ministry of Education, and is the first Kaupapa Maaori based early intervention service to be accredited by the Ministry of Education. Essentially Ohomairangi was developed because of a need in the community for a service that could focus on developing and providing early intervention in a uniquely Maaori way, without the constraints of a crown agency. The Ohomairangi early intervention team has a commitment to supporting both the positive developments for Maaori within the Ministry of Education, and the continued independent research and development of Kaupapa Maaori services. The primary purpose of Ohomairangi is to develop and provide a Kaupapa Maaori based early intervention service across Taamaki Makaurau, which meets recommended practice guidelines. This evolves from a starting point of Kaupapa Maaori theory.

text: Claiming spaces: Prioritising Maaori worldview Ohomairangi Trust was established as a provider of early intervention services in February 2002. It is funded and accredited by the Ministry of Education, and is the first Kaupapa Maaori based early intervention service to be accredited by the Ministry of Education. Essentially Ohomairangi was developed because of a need in the community for a service that could focus on developing and providing early intervention in a uniquely Maaori way, without the constraints of a crown agency. The Ohomairangi early intervention team has a commitment to supporting both the positive developments for Maaori within the Ministry of Education, and the continued independent research and development of Kaupapa Maaori services. The primary purpose of Ohomairangi is to develop and provide a Kaupapa Maaori based early intervention service across Taamaki Makaurau, which meets recommended practice guidelines. This evolves from a starting point of Kaupapa Maaori theory.

year: 2008

title: Romeo and Tusi: An eclectically musical Samoan/Māori Romeo and Juliet from Aotearoa/New Zealand

authors: Houlahan, Mark

subjects: Romeo and Tusi

abstract: Is there a distinctive New Zealand Shakespeare? What ‘new’ approaches to Shakespeare have originated from New Zealand? This article explores the issue by contextualising a version of Romeo and Juliet staged successfully throughout New Zealand in the late 1990s. The production is set against the background of the history of Shakespeare in New Zealand, which goes back to the arrival of Captain Cook on the Endeavour in 1769.

Pacific Underground's Romeo and Tusi sought a looser and more populist kind of Shakespeare performance. They used the conceit of rehearsing the play at high school, where a Māori Romeo and a Samoan Juliet cross community boundaries. Drawing on several music genres, and performing outdoors, they generated a Shakespeare that audiences from a diverse range of ethnic and cultural communities could enjoy.

text: Romeo and Tusi: An eclectically musical Samoan/Māori Romeo and Juliet from Aotearoa/New Zealand Is there a distinctive New Zealand Shakespeare? What ‘new’ approaches to Shakespeare have originated from New Zealand? This article explores the issue by contextualising a version of Romeo and Juliet staged successfully throughout New Zealand in the late 1990s. The production is set against the background of the history of Shakespeare in New Zealand, which goes back to the arrival of Captain Cook on the Endeavour in 1769.

Pacific Underground's Romeo and Tusi sought a looser and more populist kind of Shakespeare performance. They used the conceit of rehearsing the play at high school, where a Māori Romeo and a Samoan Juliet cross community boundaries. Drawing on several music genres, and performing outdoors, they generated a Shakespeare that audiences from a diverse range of ethnic and cultural communities could enjoy.

year: 2009

title: The Formulation of Titanium - based Metal Feedstocks and the Fabrication of Parts using the Powder Injection Moulding Process

authors: Ewart, Paul Douglas

subjects: Binder

abstract: Development of a profitable titanium industry for New Zealand will not come about without innovative technologies. Plastic injection moulding has long held a place in NZ manufacturing to produce large quantities of complex parts and holds the key to such innovation.
Titanium metal parts were fabricated by injection moulding titanium based metal powder feedstock followed by a debinding process and subsequent sintering. The fabrication process in its entirety was investigated in four distinct steps. Feedstock formulation involved combining the metal powders with various carrier components. Injection moulding enabled the shaping of the feedstock into geometries approximating the final part. Debinding being the process whereby the carrier/binder system is removed from the part to create a powder compact retaining the required geometry. Sintering being the final step where the metal powders are consolidated into a fully dense metal part of net shape.
The feedstock binder consisted of water soluble polyethylene glycol that reduced feedstock viscosity, improved particle wetting, aided greenpart shape retention and eliminated toxic solvents in debinding. Carnauba wax and bees wax aided dispersion, lubricated particles, were safe to handle and better for the environment (than petroleum waxes). Their low melt temperatures aided removal during thermal debinding and supported residue elimination.
By optimising the ratio of water soluble, wax and polyolefin binder components (3: 2: 1 respectively) for melt flow and pellet formation, greenparts defect free with uniform particle distribution were made. The optimal binder system proved suitable for titanium alloy and irregular shape pure titanium powders (hydride-de-hydride). Increasing powder loading (wP = (0.60 to 0.65)) had no appreciable effect on viscosity while enabling feedstock with good uniformity and pellet formation. Dimensional change was not affected by uniformity of the feedstock however molecular weight, volume and dispersion of binder components affected interparticular distances. Low processing temperatures reduced disruption to part geometry, benefitted particle bonding and helped retain handling strength.
The use of low temperatures for thermal debinding (t = 250 °C) enabled removal of the binder below the temperatures that facilitate interstitial diffusion and oxide/carbide formation, although part thickness, mass and overall volume effected the processing time. A strong correlation was seen between handling strength of the greenparts and defects, such as non-uniform density distribution and cracking after sintering.
Sintering was essential to produce the final part and showed that a binder free brownpart was not the only criteria for eliminating impurities. The furnace atmosphere must remain free from contamination to eliminate transfer back to the parts. This was addressed using an argon sweep gas, however, the design and efficacy of the system was considered inadequate. Decomposition products need to be removed quickly from the furnace as they evolve before impurities from the sweep gas diffuse back into the parts during the extended duration at sinter temperatures (t = 1300 °C).
The combination of an optimised titanium feedstock and the use of a low temperature thermal debinding technique produced a consolidated MIM part of relatively large dimensions. The parts were seen to have uniform microstructure throughout the cross-section with density comparable to that of MIM standards. In difference to the literature, a high powder loading (φp = 0.65) of HDH powders was used and shown to be readily mouldable. The higher powder loading also eliminate separation defects and shape distortions evident using lower amounts of powder.

text: The Formulation of Titanium - based Metal Feedstocks and the Fabrication of Parts using the Powder Injection Moulding Process Development of a profitable titanium industry for New Zealand will not come about without innovative technologies. Plastic injection moulding has long held a place in NZ manufacturing to produce large quantities of complex parts and holds the key to such innovation.
Titanium metal parts were fabricated by injection moulding titanium based metal powder feedstock followed by a debinding process and subsequent sintering. The fabrication process in its entirety was investigated in four distinct steps. Feedstock formulation involved combining the metal powders with various carrier components. Injection moulding enabled the shaping of the feedstock into geometries approximating the final part. Debinding being the process whereby the carrier/binder system is removed from the part to create a powder compact retaining the required geometry. Sintering being the final step where the metal powders are consolidated into a fully dense metal part of net shape.
The feedstock binder consisted of water soluble polyethylene glycol that reduced feedstock viscosity, improved particle wetting, aided greenpart shape retention and eliminated toxic solvents in debinding. Carnauba wax and bees wax aided dispersion, lubricated particles, were safe to handle and better for the environment (than petroleum waxes). Their low melt temperatures aided removal during thermal debinding and supported residue elimination.
By optimising the ratio of water soluble, wax and polyolefin binder components (3: 2: 1 respectively) for melt flow and pellet formation, greenparts defect free with uniform particle distribution were made. The optimal binder system proved suitable for titanium alloy and irregular shape pure titanium powders (hydride-de-hydride). Increasing powder loading (wP = (0.60 to 0.65)) had no appreciable effect on viscosity while enabling feedstock with good uniformity and pellet formation. Dimensional change was not affected by uniformity of the feedstock however molecular weight, volume and dispersion of binder components affected interparticular distances. Low processing temperatures reduced disruption to part geometry, benefitted particle bonding and helped retain handling strength.
The use of low temperatures for thermal debinding (t = 250 °C) enabled removal of the binder below the temperatures that facilitate interstitial diffusion and oxide/carbide formation, although part thickness, mass and overall volume effected the processing time. A strong correlation was seen between handling strength of the greenparts and defects, such as non-uniform density distribution and cracking after sintering.
Sintering was essential to produce the final part and showed that a binder free brownpart was not the only criteria for eliminating impurities. The furnace atmosphere must remain free from contamination to eliminate transfer back to the parts. This was addressed using an argon sweep gas, however, the design and efficacy of the system was considered inadequate. Decomposition products need to be removed quickly from the furnace as they evolve before impurities from the sweep gas diffuse back into the parts during the extended duration at sinter temperatures (t = 1300 °C).
The combination of an optimised titanium feedstock and the use of a low temperature thermal debinding technique produced a consolidated MIM part of relatively large dimensions. The parts were seen to have uniform microstructure throughout the cross-section with density comparable to that of MIM standards. In difference to the literature, a high powder loading (φp = 0.65) of HDH powders was used and shown to be readily mouldable. The higher powder loading also eliminate separation defects and shape distortions evident using lower amounts of powder.

year: 2015